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SqMod/module/Library/SQLite.hpp
Sandu Liviu Catalin f49452c165 Remove SLongInt and ULongInt helper types. 
Fix a bunch of bugs and mistakes discovered along the way.
2021-09-10 21:27:28 +03:00

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#pragma once
// ------------------------------------------------------------------------------------------------
#include "Core/Utility.hpp"
// ------------------------------------------------------------------------------------------------
#include "Library/IO/Buffer.hpp"
#include "Library/Chrono/Date.hpp"
#include "Library/Chrono/Datetime.hpp"
#include "Library/Chrono/Time.hpp"
#include "Library/Chrono/Timestamp.hpp"
// ------------------------------------------------------------------------------------------------
#include <utility>
#include <vector>
#include <map>
// ------------------------------------------------------------------------------------------------
#ifdef SQMOD_POCO_HAS_SQLITE
#include <sqlite3.h>
#else
#error Enable SQLite support in order to compile this library.
#endif
// ------------------------------------------------------------------------------------------------
namespace SqMod {
/* ------------------------------------------------------------------------------------------------
* Forward declarations.
*/
class SQLiteConnection;
class SQLiteStatement;
class SQLiteParameter;
class SQLiteColumn;
class SQLiteTransaction;
/* ------------------------------------------------------------------------------------------------
* Handle validation.
*/
#if defined(_DEBUG) || defined(SQMOD_EXCEPTLOC)
#define SQMOD_THROW_CURRENT(x, a) (x).ThrowCurrent(a, __FILE__, __LINE__)
#define SQMOD_VALIDATE(x) (x).Validate(__FILE__, __LINE__)
#define SQMOD_VALIDATE_CREATED(x) (x).ValidateCreated(__FILE__, __LINE__)
#define SQMOD_VALIDATE_PARAM(x, i) (x).ValidateParam((i), __FILE__, __LINE__)
#define SQMOD_VALIDATE_COLUMN(x, i) (x).ValidateColumn((i), __FILE__, __LINE__)
#define SQMOD_VALIDATE_ROW(x) (x).ValidateRow(__FILE__, __LINE__)
#define SQMOD_GET_VALID(x) (x).GetValid(__FILE__, __LINE__)
#define SQMOD_GET_CREATED(x) (x).GetCreated(__FILE__, __LINE__)
#else
#define SQMOD_THROW_CURRENT(x, a) (x).ThrowCurrent(a)
#define SQMOD_VALIDATE(x) (x).Validate()
#define SQMOD_VALIDATE_CREATED(x) (x).ValidateCreated()
#define SQMOD_VALIDATE_PARAM(x, i) (x).ValidateParam((i))
#define SQMOD_VALIDATE_COLUMN(x, i) (x).ValidateColumn((i))
#define SQMOD_VALIDATE_ROW(x) (x).ValidateRow()
#define SQMOD_GET_VALID(x) (x).GetValid()
#define SQMOD_GET_CREATED(x) (x).GetCreated()
#endif // _DEBUG
/* ------------------------------------------------------------------------------------------------
* Helper macros for architecture differences.
*/
#ifdef _SQ64
#define sqlite3_bind_integer sqlite3_bind_int64
#define sqlite3_column_integer sqlite3_column_int64
#else
#define sqlite3_bind_integer sqlite3_bind_int
#define sqlite3_column_integer sqlite3_column_int
#endif
/* ------------------------------------------------------------------------------------------------
* Forward declarations.
*/
struct SQLiteConnHnd;
struct SQLiteStmtHnd;
/* ------------------------------------------------------------------------------------------------
* Common typedefs.
*/
typedef SharedPtr< SQLiteConnHnd > ConnRef;
typedef SharedPtr< SQLiteStmtHnd > StmtRef;
/* ------------------------------------------------------------------------------------------------
* Obtain a script object from a connection handle. (meant to avoid having to include the header)
*/
Object GetConnectionObj(const ConnRef & conn);
/* ------------------------------------------------------------------------------------------------
* Obtain a script object from a statement handle. (meant to avoid having to include the header)
*/
Object GetStatementObj(const StmtRef & stmt);
/* ------------------------------------------------------------------------------------------------
* Tests if a certain query string is empty.
*/
SQMOD_NODISCARD bool IsQueryEmpty(const SQChar * str);
/* ------------------------------------------------------------------------------------------------
* Retrieve the string representation of a certain status code.
*/
SQMOD_NODISCARD const SQChar * GetErrStr(int32_t status);
/* ------------------------------------------------------------------------------------------------
* Set a specific heap limit.
*/
void SetSoftHeapLimit(int32_t limit);
/* ------------------------------------------------------------------------------------------------
* Release the specified amount of memory.
*/
int32_t ReleaseMemory(int32_t bytes);
/* ------------------------------------------------------------------------------------------------
* Retrieve the current memory usage.
*/
SQMOD_NODISCARD SQInteger GetMemoryUsage();
/* ------------------------------------------------------------------------------------------------
* Retrieve the memory high watermark.
*/
SQMOD_NODISCARD SQInteger GetMemoryHighwaterMark(bool reset);
/* ------------------------------------------------------------------------------------------------
* Retrieve the escaped version of the specified string.
*/
SQMOD_NODISCARD LightObj EscapeString(StackStrF & str);
/* ------------------------------------------------------------------------------------------------
* Retrieve the escaped version of the specified string using the supplied format specifier.
*/
SQMOD_NODISCARD LightObj EscapeStringEx(SQChar spec, StackStrF & str);
/* ------------------------------------------------------------------------------------------------
* Convert the values from the specified array to a list of column names string.
*/
SQMOD_NODISCARD LightObj ArrayToQueryColumns(Array & arr);
/* ------------------------------------------------------------------------------------------------
* Convert the keys from the specified array to a list of column names string.
*/
SQMOD_NODISCARD LightObj TableToQueryColumns(Table & tbl);
/* ------------------------------------------------------------------------------------------------
* The structure that holds the data associated with a certain connection.
*/
struct SQLiteConnHnd
{
public:
// --------------------------------------------------------------------------------------------
typedef sqlite3 Type; // The managed type.
// --------------------------------------------------------------------------------------------
typedef Type * Pointer; // Pointer to the managed type.
typedef const Type * SQ_UNUSED_TYPEDEF(ConstPtr); // Constant pointer to the managed type.
// --------------------------------------------------------------------------------------------
typedef Type & Reference; // Reference to the managed type.
typedef const Type & SQ_UNUSED_TYPEDEF(ConstRef); // Constant reference to the managed type.
// --------------------------------------------------------------------------------------------
typedef std::vector< String > QueryList; // Container used to queue queries.
public:
// --------------------------------------------------------------------------------------------
Pointer mPtr; // The connection handle resource.
// --------------------------------------------------------------------------------------------
int32_t mStatus; // The last status code of this connection handle.
// --------------------------------------------------------------------------------------------
QueryList mQueue; // A queue of queries to be executed in groups.
// --------------------------------------------------------------------------------------------
int32_t mFlags; // The flags used to create the database connection handle.
String mName; // The specified name to be used as the database file.
String mVFS; // The specified virtual file system.
// --------------------------------------------------------------------------------------------
bool mMemory; // Whether the database exists in memory and not disk.
bool mTrace; // Whether tracing was activated on the database.
bool mProfile; // Whether profiling was activated on the database.
/* --------------------------------------------------------------------------------------------
* Default constructor.
*/
SQLiteConnHnd();
/* --------------------------------------------------------------------------------------------
* Copy constructor. (disabled)
*/
SQLiteConnHnd(const SQLiteConnHnd & o) = delete;
/* --------------------------------------------------------------------------------------------
* Move constructor. (disabled)
*/
SQLiteConnHnd(SQLiteConnHnd && o) = delete;
/* --------------------------------------------------------------------------------------------
* Destructor.
*/
~SQLiteConnHnd();
/* --------------------------------------------------------------------------------------------
* Copy assignment operator. (disabled)
*/
SQLiteConnHnd & operator = (const SQLiteConnHnd & o) = delete;
/* --------------------------------------------------------------------------------------------
* Move assignment operator. (disabled)
*/
SQLiteConnHnd & operator = (SQLiteConnHnd && o) = delete;
/* --------------------------------------------------------------------------------------------
* Create the database connection resource.
*/
void Create(const SQChar * name, int32_t flags, const SQChar * vfs);
/* --------------------------------------------------------------------------------------------
* Execute a specific amount of queries from the queue.
*/
int32_t Flush(uint32_t num, Object & env, Function & func);
/* --------------------------------------------------------------------------------------------
* Retrieve the message of the last received error code.
*/
SQMOD_NODISCARD const char * ErrStr() const
{
return sqlite3_errstr(sqlite3_errcode(mPtr));
}
/* --------------------------------------------------------------------------------------------
* Return the last error message associated with this database connection.
*/
SQMOD_NODISCARD const char * ErrMsg() const
{
return sqlite3_errmsg(mPtr);
}
/* --------------------------------------------------------------------------------------------
* Return the numeric result code for the most recent failed API call (if any).
*/
SQMOD_NODISCARD int32_t ErrNo() const
{
return sqlite3_errcode(mPtr);
}
/* --------------------------------------------------------------------------------------------
* Return the extended numeric result code for the most recent failed API call (if any).
*/
SQMOD_NODISCARD int32_t ExErrNo() const
{
return sqlite3_extended_errcode(mPtr);
}
};
/* ------------------------------------------------------------------------------------------------
* The structure that holds the data associated with a certain statement.
*/
struct SQLiteStmtHnd
{
public:
// --------------------------------------------------------------------------------------------
typedef sqlite3_stmt Type; // The managed type.
// --------------------------------------------------------------------------------------------
typedef Type * Pointer; // Pointer to the managed type.
typedef const Type * SQ_UNUSED_TYPEDEF(ConstPtr); // Constant pointer to the managed type.
// --------------------------------------------------------------------------------------------
typedef Type & Reference; // Reference to the managed type.
typedef const Type & SQ_UNUSED_TYPEDEF(ConstRef); // Constant reference to the managed type.
// --------------------------------------------------------------------------------------------
typedef std::map< String, int > Indexes; // Container used to identify column indexes.
public:
// --------------------------------------------------------------------------------------------
Pointer mPtr; // The statement handle resource.
// --------------------------------------------------------------------------------------------
int32_t mStatus; // The last status code of this connection handle.
// --------------------------------------------------------------------------------------------
ConnRef mConn; // The handle to the associated database connection.
// --------------------------------------------------------------------------------------------
String mQuery; // The query string used to create this statement.
// --------------------------------------------------------------------------------------------
int32_t mColumns; // The amount of columns available in this statement.
int32_t mParameters; // The amount of parameters available in this statement.
Indexes mIndexes; // An associative container with column names and their index.
// --------------------------------------------------------------------------------------------
bool mGood; // True when a row has been fetched with step.
bool mDone; // True when the last step had no more rows to fetch.
/* --------------------------------------------------------------------------------------------
* Default constructor.
*/
explicit SQLiteStmtHnd(ConnRef conn);
/* --------------------------------------------------------------------------------------------
* Copy constructor. (disabled)
*/
SQLiteStmtHnd(const SQLiteStmtHnd & o) = delete;
/* --------------------------------------------------------------------------------------------
* Move constructor. (disabled)
*/
SQLiteStmtHnd(SQLiteStmtHnd && o) = delete;
/* --------------------------------------------------------------------------------------------
* Destructor.
*/
~SQLiteStmtHnd();
/* --------------------------------------------------------------------------------------------
* Copy assignment operator. (disabled)
*/
SQLiteStmtHnd & operator = (const SQLiteStmtHnd & o) = delete;
/* --------------------------------------------------------------------------------------------
* Move assignment operator. (disabled)
*/
SQLiteStmtHnd & operator = (SQLiteStmtHnd && o) = delete;
/* --------------------------------------------------------------------------------------------
* Create the database statement resource.
*/
void Create(const SQChar * query, SQInteger length = -1);
/* --------------------------------------------------------------------------------------------
* Check whether a specific column index is in range.
*/
SQMOD_NODISCARD bool CheckColumn(int32_t idx) const
{
return (idx >= 0) && (idx < mColumns);
}
/* --------------------------------------------------------------------------------------------
* Check whether a specific parameter index is in range.
*/
SQMOD_NODISCARD bool CheckParameter(int32_t idx) const
{
return (idx >= 1) && (idx <= mParameters);
}
/* --------------------------------------------------------------------------------------------
* Retrieve the column index associated with the specified name.
*/
SQMOD_NODISCARD int32_t GetColumnIndex(const SQChar * name, SQInteger length = -1);
/* --------------------------------------------------------------------------------------------
* Retrieve the message of the last received error code.
*/
SQMOD_NODISCARD const char * ErrStr() const;
/* --------------------------------------------------------------------------------------------
* Return the last error message associated with this database connection.
*/
SQMOD_NODISCARD const char * ErrMsg() const;
/* --------------------------------------------------------------------------------------------
* Return the numeric result code for the most recent failed API call (if any).
*/
SQMOD_NODISCARD int32_t ErrNo() const;
/* --------------------------------------------------------------------------------------------
* Return the extended numeric result code for the most recent failed API call (if any).
*/
SQMOD_NODISCARD int32_t ExErrNo() const;
};
/* ------------------------------------------------------------------------------------------------
* Used to manage and interact with a database connection.
*/
class SQLiteConnection
{
private:
// --------------------------------------------------------------------------------------------
ConnRef m_Handle; // Reference to the managed connection.
protected:
/* --------------------------------------------------------------------------------------------
* Callback function for ActivateTracing()
*/
static void TraceOutput(void * ptr, const char * sql);
/* --------------------------------------------------------------------------------------------
* Callback function for ActivateProfiling()
*/
static void ProfileOutput(void * ptr, const char * sql, sqlite3_uint64 time);
/* --------------------------------------------------------------------------------------------
* Validate the managed connection handle and throw an error if invalid.
*/
#if defined(_DEBUG) || defined(SQMOD_EXCEPTLOC)
void Validate(const char * file, int32_t line) const;
#else
void Validate() const;
#endif // _DEBUG
/* --------------------------------------------------------------------------------------------
* Validate the managed connection handle and throw an error if invalid.
*/
#if defined(_DEBUG) || defined(SQMOD_EXCEPTLOC)
void ValidateCreated(const char * file, int32_t line) const;
#else
void ValidateCreated() const;
#endif // _DEBUG
/* --------------------------------------------------------------------------------------------
* Validate the managed connection handle and throw an error if invalid.
*/
#if defined(_DEBUG) || defined(SQMOD_EXCEPTLOC)
SQMOD_NODISCARD const ConnRef & GetValid(const char * file, int32_t line) const;
#else
SQMOD_NODISCARD const ConnRef & GetValid() const;
#endif // _DEBUG
/* --------------------------------------------------------------------------------------------
* Validate the managed connection handle and throw an error if invalid.
*/
#if defined(_DEBUG) || defined(SQMOD_EXCEPTLOC)
SQMOD_NODISCARD const ConnRef & GetCreated(const char * file, int32_t line) const;
#else
SQMOD_NODISCARD const ConnRef & GetCreated() const;
#endif // _DEBUG
public:
/* --------------------------------------------------------------------------------------------
* Attempt to open the specified database.
*/
SQLiteConnection()
: m_Handle()
{
/* ... */
}
/* --------------------------------------------------------------------------------------------
* Explicit constructor.
*/
explicit SQLiteConnection(StackStrF & name)
: m_Handle(new SQLiteConnHnd())
{
// Effing signed/unsigned warnings everywhere. I just need it to shut up.
constexpr unsigned OPEN_READWRITE_F = SQLITE_OPEN_READWRITE;
constexpr unsigned OPEN_CREATE_F = SQLITE_OPEN_CREATE;
SQMOD_GET_VALID(*this)->Create(name.mPtr, OPEN_READWRITE_F | OPEN_CREATE_F, nullptr);
}
/* --------------------------------------------------------------------------------------------
* Explicit constructor.
*/
SQLiteConnection(StackStrF & name, int32_t flags)
: m_Handle(new SQLiteConnHnd())
{
SQMOD_GET_VALID(*this)->Create(name.mPtr, flags, nullptr);
}
/* --------------------------------------------------------------------------------------------
* Explicit constructor.
*/
SQLiteConnection(StackStrF & name, int32_t flags, StackStrF & vfs)
: m_Handle(new SQLiteConnHnd())
{
SQMOD_GET_VALID(*this)->Create(name.mPtr, flags, vfs.mPtr);
}
/* --------------------------------------------------------------------------------------------
* Direct handle constructor.
*/
explicit SQLiteConnection(ConnRef c)
: m_Handle(std::move(c))
{
/* ... */
}
/* --------------------------------------------------------------------------------------------
* Copy constructor.
*/
SQLiteConnection(const SQLiteConnection & o) = default;
/* --------------------------------------------------------------------------------------------
* Move constructor.
*/
SQLiteConnection(SQLiteConnection && o) = default;
/* --------------------------------------------------------------------------------------------
* Copy assignment operator.
*/
SQLiteConnection & operator = (const SQLiteConnection & o) = default;
/* --------------------------------------------------------------------------------------------
* Move assignment operator.
*/
SQLiteConnection & operator = (SQLiteConnection && o) = default;
/* --------------------------------------------------------------------------------------------
* Perform an equality comparison between two connections.
*/
bool operator == (const SQLiteConnection & o) const
{
return (m_Handle == o.m_Handle);
}
/* --------------------------------------------------------------------------------------------
* Perform an inequality comparison between two connections.
*/
bool operator != (const SQLiteConnection & o) const
{
return (m_Handle != o.m_Handle);
}
/* --------------------------------------------------------------------------------------------
* Implicit conversion to the raw connection handle.
*/
operator sqlite3 * () //NOLINT (intentionally implicit)
{
return m_Handle ? m_Handle->mPtr : nullptr;
}
/* --------------------------------------------------------------------------------------------
* Implicit conversion to the raw connection handle.
*/
operator sqlite3 * () const //NOLINT (intentionally implicit)
{
return m_Handle ? m_Handle->mPtr : nullptr;
}
/* --------------------------------------------------------------------------------------------
* Used by the script engine to convert an instance of this type to a string.
*/
SQMOD_NODISCARD const String & ToString() const
{
return m_Handle ? m_Handle->mName : NullString();
}
/* --------------------------------------------------------------------------------------------
* Retrieve the associated connection handle.
*/
SQMOD_NODISCARD const ConnRef & GetHandle() const
{
return m_Handle;
}
/* --------------------------------------------------------------------------------------------
* See whether the managed connection handle is valid.
*/
SQMOD_NODISCARD bool IsValid() const
{
return m_Handle;
}
/* --------------------------------------------------------------------------------------------
* See whether the managed connection handle was connected.
*/
SQMOD_NODISCARD bool IsConnected() const
{
return m_Handle && (m_Handle->mPtr != nullptr);
}
/* --------------------------------------------------------------------------------------------
* Return the number of active references to this connection handle.
*/
SQMOD_NODISCARD uint32_t GetRefCount() const
{
return m_Handle.Count();
}
/* --------------------------------------------------------------------------------------------
* Release the reference to the associated database connection.
*/
void Release()
{
m_Handle.Reset();
}
/* --------------------------------------------------------------------------------------------
* Retrieve the last received status code.
*/
SQMOD_NODISCARD int32_t GetStatus() const
{
return SQMOD_GET_VALID(*this)->mStatus;
}
/* --------------------------------------------------------------------------------------------
* Retrieve the flags used to create this database connection.
*/
SQMOD_NODISCARD int32_t GetFlags() const
{
return SQMOD_GET_VALID(*this)->mFlags;
}
/* --------------------------------------------------------------------------------------------
* Retrieve the name used to create this database connection.
*/
SQMOD_NODISCARD const String & GetName() const
{
return SQMOD_GET_VALID(*this)->mName;
}
/* --------------------------------------------------------------------------------------------
* Retrieve the virtual file system used to create this database connection.
*/
SQMOD_NODISCARD const String & GetVFS() const
{
return SQMOD_GET_VALID(*this)->mVFS;
}
/* --------------------------------------------------------------------------------------------
* Return the numeric result code for the most recent failed API call (if any).
*/
SQMOD_NODISCARD int32_t GetErrorCode() const
{
return SQMOD_GET_VALID(*this)->ErrNo();
}
/* --------------------------------------------------------------------------------------------
* Return the extended numeric result code for the most recent failed API call (if any).
*/
SQMOD_NODISCARD int32_t GetExtendedErrorCode() const
{
return SQMOD_GET_VALID(*this)->ExErrNo();
}
/* --------------------------------------------------------------------------------------------
* Retrieve the message of the last received error code.
*/
SQMOD_NODISCARD const SQChar * GetErrStr() const
{
return SQMOD_GET_VALID(*this)->ErrStr();
}
/* --------------------------------------------------------------------------------------------
* Return the last error message associated with this database connection.
*/
SQMOD_NODISCARD const SQChar * GetErrMsg() const
{
return SQMOD_GET_VALID(*this)->ErrMsg();
}
/* --------------------------------------------------------------------------------------------
* Attempt to open the specified database.
*/
void Open(StackStrF & name);
/* --------------------------------------------------------------------------------------------
* Attempt to open the specified database.
*/
void Open(StackStrF & name, int32_t flags);
/* --------------------------------------------------------------------------------------------
* Attempt to open the specified database.
*/
void Open(StackStrF & name, int32_t flags, StackStrF & vfs);
/* --------------------------------------------------------------------------------------------
* Attempt to execute the specified query.
*/
int32_t Exec(StackStrF & str);
/* --------------------------------------------------------------------------------------------
* Attempt to queue the specified query.
*/
void Queue(StackStrF & str);
/* --------------------------------------------------------------------------------------------
* Attempt to create a statement from the specified query.
*/
Object Query(StackStrF & str) const;
/* --------------------------------------------------------------------------------------------
* See if the database connection was opened in read-only mode.
*/
SQMOD_NODISCARD bool IsReadOnly() const;
/* --------------------------------------------------------------------------------------------
* Shortcut to test if a table exists.
*/
SQMOD_NODISCARD bool TableExists(StackStrF & name) const;
/* --------------------------------------------------------------------------------------------
* See if the database connection is or is not in auto-commit mode.
*/
SQMOD_NODISCARD bool GetAutoCommit() const
{
return static_cast< bool >(sqlite3_get_autocommit(SQMOD_GET_CREATED(*this)->mPtr));
}
/* --------------------------------------------------------------------------------------------
* Get the row-id of the most recent successful INSERT into the database from the current connection.
*/
SQMOD_NODISCARD SQInteger GetLastInsertRowID() const
{
return sqlite3_last_insert_rowid(SQMOD_GET_CREATED(*this)->mPtr);
}
/* --------------------------------------------------------------------------------------------
* Returns the number of database rows that were changed, inserted or deleted
* by the most recently completed SQL statement.
*/
SQMOD_NODISCARD int32_t GetChanges() const
{
return sqlite3_changes(SQMOD_GET_CREATED(*this)->mPtr);
}
/* --------------------------------------------------------------------------------------------
* Returns the total number of row changes caused by INSERT, UPDATE or DELETE statements
* since the database connection was opened.
*/
SQMOD_NODISCARD int32_t GetTotalChanges() const
{
return sqlite3_total_changes(SQMOD_GET_CREATED(*this)->mPtr);
}
/* --------------------------------------------------------------------------------------------
* See if this database connection has tracing enabled.
*/
SQMOD_NODISCARD bool GetTracing() const
{
return SQMOD_GET_VALID(*this)->mTrace;
}
/* --------------------------------------------------------------------------------------------
* Activate or deactivate tracing on this database connection.
*/
void SetTracing(bool toggle);
/* --------------------------------------------------------------------------------------------
* See if this database connection has profiling enabled.
*/
SQMOD_NODISCARD bool GetProfiling() const
{
return SQMOD_GET_VALID(*this)->mProfile;
}
/* --------------------------------------------------------------------------------------------
* Activate or deactivate profiling on this database connection.
*/
void SetProfiling(bool toggle);
/* --------------------------------------------------------------------------------------------
* Set a busy handler that sleeps for a specified amount of time when a table is locked.
*/
void SetBusyTimeout(int32_t millis);
/* --------------------------------------------------------------------------------------------
* Causes any pending database operation to abort and return at its earliest opportunity.
*/
void InterruptOperation() const
{
sqlite3_interrupt(SQMOD_GET_CREATED(*this)->mPtr);
}
/* --------------------------------------------------------------------------------------------
* Attempts to free as much heap memory as possible from the database connection.
*/
void ReleaseMemory() const
{
sqlite3_db_release_memory(SQMOD_GET_CREATED(*this)->mPtr);
}
/* --------------------------------------------------------------------------------------------
* Returns internal runtime status information associated with the current database connection.
*/
SQMOD_NODISCARD int32_t GetInfo(int32_t operation)
{
return GetInfo(operation, false, false);
}
/* --------------------------------------------------------------------------------------------
* Returns internal runtime status information associated with the current database connection.
*/
SQMOD_NODISCARD int32_t GetInfo(int32_t operation, bool highwater)
{
return GetInfo(operation, highwater, false);
}
/* --------------------------------------------------------------------------------------------
* Returns internal runtime status information associated with the current database connection.
*/
SQMOD_NODISCARD int32_t GetInfo(int32_t operation, bool highwater, bool reset);
/* --------------------------------------------------------------------------------------------
* Retrieve the number of queries in the queue.
*/
SQMOD_NODISCARD uint32_t QueueSize() const
{
return ConvTo< uint32_t >::From(SQMOD_GET_VALID(*this)->mQueue.size());
}
/* --------------------------------------------------------------------------------------------
* Reserve space upfront for the specified amount of queries in the query queue.
*/
void ReserveQueue(uint32_t num);
/* --------------------------------------------------------------------------------------------
* Release memory that is not occupied from the query queue.
*/
void CompactQueue()
{
SQMOD_GET_VALID(*this)->mQueue.shrink_to_fit();
}
/* --------------------------------------------------------------------------------------------
* Remove all queries from the queue without executing them.
*/
void ClearQueue()
{
SQMOD_GET_VALID(*this)->mQueue.clear();
}
/* --------------------------------------------------------------------------------------------
* Remove the last query from the queue.
*/
void PopQueue();
/* --------------------------------------------------------------------------------------------
* Flush all queries from the queue.
*/
int32_t Flush();
/* --------------------------------------------------------------------------------------------
* Flush a specific amount of queries from the queue.
*/
int32_t Flush(SQInteger num);
/* --------------------------------------------------------------------------------------------
* Flush all queries from the queue and handle errors manually.
*/
int32_t Flush(Object & env, Function & func);
/* --------------------------------------------------------------------------------------------
* Flush a specific amount of queries from the queue and handle errors manually.
*/
int32_t Flush(SQInteger num, Object & env, Function & func);
};
/* ------------------------------------------------------------------------------------------------
* Used to manage and interact with parameters from a database statement.
*/
class SQLiteParameter
{
// --------------------------------------------------------------------------------------------
friend class SQLiteStatement;
private:
// --------------------------------------------------------------------------------------------
int32_t m_Index{0}; // The index of the managed parameter.
StmtRef m_Handle{}; // Reference to the managed statement.
protected:
/* --------------------------------------------------------------------------------------------
* Validate the managed statement handle and throw an error if invalid.
*/
#if defined(_DEBUG) || defined(SQMOD_EXCEPTLOC)
void Validate(const char * file, int32_t line) const;
#else
void Validate() const;
#endif // _DEBUG
/* --------------------------------------------------------------------------------------------
* Validate the managed statement handle and throw an error if invalid.
*/
#if defined(_DEBUG) || defined(SQMOD_EXCEPTLOC)
void ValidateCreated(const char * file, int32_t line) const;
#else
void ValidateCreated() const;
#endif // _DEBUG
/* --------------------------------------------------------------------------------------------
* Validate the managed statement handle and throw an error if invalid.
*/
#if defined(_DEBUG) || defined(SQMOD_EXCEPTLOC)
SQMOD_NODISCARD const StmtRef & GetValid(const char * file, int32_t line) const;
#else
SQMOD_NODISCARD const StmtRef & GetValid() const;
#endif // _DEBUG
/* --------------------------------------------------------------------------------------------
* Validate the managed statement handle and throw an error if invalid.
*/
#if defined(_DEBUG) || defined(SQMOD_EXCEPTLOC)
SQMOD_NODISCARD const StmtRef & GetCreated(const char * file, int32_t line) const;
#else
SQMOD_NODISCARD const StmtRef & GetCreated() const;
#endif // _DEBUG
/* --------------------------------------------------------------------------------------------
* Validate the statement reference and parameter index, and throw an error if they're invalid.
*/
#if defined(_DEBUG) || defined(SQMOD_EXCEPTLOC)
void ValidateParam(int32_t idx, const char * file, int32_t line) const;
#else
void ValidateParam(int32_t idx) const;
#endif // _DEBUG
/* --------------------------------------------------------------------------------------------
* Modify the index to the specified value.
*/
void SetIndex(int32_t idx)
{
// Assign the index with a failsafe to invalid on error
AutoAssign< int32_t > aa(m_Index, -1, idx);
// Validate the obtained parameter index
SQMOD_VALIDATE_PARAM(*this, idx);
// Don't fall back to the invalid index anymore
aa.Set(idx);
}
/* --------------------------------------------------------------------------------------------
* Modify the index to the specified value.
*/
void SetIndex(const SQChar * name)
{
SetIndex(sqlite3_bind_parameter_index(SQMOD_GET_CREATED(*this)->mPtr, name));
}
/* --------------------------------------------------------------------------------------------
* Modify the index to the specified value.
*/
void SetIndex(const Object & param);
public:
/* --------------------------------------------------------------------------------------------
* Default constructor (null).
*/
SQLiteParameter() = default;
/* --------------------------------------------------------------------------------------------
* No parameter constructor.
*/
explicit SQLiteParameter(StmtRef stmt)
: m_Index(0), m_Handle(std::move(stmt))
{
/* ... */
}
/* --------------------------------------------------------------------------------------------
* Index constructor.
*/
SQLiteParameter(StmtRef stmt, int32_t idx)
: m_Index(idx), m_Handle(std::move(stmt))
{
SQMOD_VALIDATE_PARAM(*this, m_Index);
}
/* --------------------------------------------------------------------------------------------
* Name constructor.
*/
SQLiteParameter(const StmtRef & stmt, const SQChar * name)
: m_Index(stmt ? sqlite3_bind_parameter_index(stmt->mPtr, name) : 0), m_Handle(stmt)
{
SQMOD_VALIDATE_PARAM(*this, m_Index);
}
/* --------------------------------------------------------------------------------------------
* Dynamic constructor.
*/
SQLiteParameter(StmtRef stmt, const Object & param)
: m_Index(0), m_Handle(std::move(stmt))
{
if (!m_Handle)
{
STHROWF("Invalid SQLite statement reference");
}
// Extract the index
SetIndex(param);
}
/* --------------------------------------------------------------------------------------------
* Copy constructor.
*/
SQLiteParameter(const SQLiteParameter & o) = default;
/* --------------------------------------------------------------------------------------------
* Move constructor.
*/
SQLiteParameter(SQLiteParameter && o) = default;
/* --------------------------------------------------------------------------------------------
* Copy assignment operator.
*/
SQLiteParameter & operator = (const SQLiteParameter & o) = default;
/* --------------------------------------------------------------------------------------------
* Move assignment operator.
*/
SQLiteParameter & operator = (SQLiteParameter && o) = default;
/* --------------------------------------------------------------------------------------------
* Perform an equality comparison between two parameter indexes.
*/
bool operator == (const SQLiteParameter & o) const
{
return (m_Index == o.m_Index);
}
/* --------------------------------------------------------------------------------------------
* Perform an inequality comparison between two parameter indexes.
*/
bool operator != (const SQLiteParameter & o) const
{
return (m_Index != o.m_Index);
}
/* --------------------------------------------------------------------------------------------
* Implicit conversion to boolean for use in boolean operations.
*/
operator bool () const // NOLINT(google-explicit-constructor,hicpp-explicit-conversions)
{
return m_Index >= 0;
}
/* --------------------------------------------------------------------------------------------
* Used by the script engine to convert an instance of this type to a string.
*/
SQMOD_NODISCARD String ToString() const
{
// Can we attempt to return the parameter name?
if (m_Handle && m_Index)
{
const SQChar * val = sqlite3_bind_parameter_name(m_Handle->mPtr, m_Index);
// Return the value if valid
return val ? val : String{};
}
else
{
return fmt::format("{}", m_Index);
}
}
/* --------------------------------------------------------------------------------------------
* See whether this statement is valid.
*/
SQMOD_NODISCARD bool IsValid() const
{
return m_Handle; // An invalid statement means an invalid parameter
}
/* --------------------------------------------------------------------------------------------
* Return the number of active references to this statement handle.
*/
SQMOD_NODISCARD uint32_t GetRefCount() const
{
return m_Handle.Count();
}
/* --------------------------------------------------------------------------------------------
* Retrieve the associated parameter index.
*/
SQMOD_NODISCARD int32_t GetIndex() const
{
return m_Index;
}
/* --------------------------------------------------------------------------------------------
* Retrieve the associated database statement.
*/
SQMOD_NODISCARD Object GetStatement() const;
/* --------------------------------------------------------------------------------------------
* Retrieve the associated database connection.
*/
SQMOD_NODISCARD Object GetConnection() const;
/* --------------------------------------------------------------------------------------------
* Retrieve the name of the referenced parameter.
*/
SQMOD_NODISCARD const SQChar * GetName() const
{
return sqlite3_bind_parameter_name(SQMOD_GET_CREATED(*this)->mPtr, m_Index);
}
/* --------------------------------------------------------------------------------------------
* Release the reference to the associated database statement and parameter index.
*/
void Release()
{
m_Handle.Reset();
m_Index = 0;
}
/* --------------------------------------------------------------------------------------------
* Attempt to bind a dynamic value at the referenced parameter index.
*/
void SetValue(const Object & value);
/* --------------------------------------------------------------------------------------------
* Attempt to bind a boolean value at the referenced parameter index.
*/
void SetBool(bool value);
/* --------------------------------------------------------------------------------------------
* Attempt to bind a character value at the referenced parameter index.
*/
void SetChar(SQInteger value);
/* --------------------------------------------------------------------------------------------
* Attempt to bind a native integer value at the referenced parameter index.
*/
void SetInteger(SQInteger value);
/* --------------------------------------------------------------------------------------------
* Attempt to bind a signed 8 bit integer value at the referenced parameter index.
*/
void SetInt8(SQInteger value);
/* --------------------------------------------------------------------------------------------
* Attempt to bind an unsigned 8 bit integer value at the referenced parameter index.
*/
void SetUint8(SQInteger value);
/* --------------------------------------------------------------------------------------------
* Attempt to bind a signed 16 bit integer value at the referenced parameter index.
*/
void SetInt16(SQInteger value);
/* --------------------------------------------------------------------------------------------
* Attempt to bind an unsigned 16 bit integer value at the referenced parameter index.
*/
void SetUint16(SQInteger value);
/* --------------------------------------------------------------------------------------------
* Attempt to bind a signed 32 bit integer value at the referenced parameter index.
*/
void SetInt32(SQInteger value);
/* --------------------------------------------------------------------------------------------
* Attempt to bind an unsigned 32 bit integer value at the referenced parameter index.
*/
void SetUint32(SQInteger value);
/* --------------------------------------------------------------------------------------------
* Attempt to bind a signed 64 bit integer value at the referenced parameter index.
*/
void SetInt64(SQInteger value);
/* --------------------------------------------------------------------------------------------
* Attempt to bind an unsigned 64 bit integer value at the referenced parameter index.
*/
void SetUint64(SQInteger value);
/* --------------------------------------------------------------------------------------------
* Attempt to bind a native floating point value at the referenced parameter index.
*/
void SetFloat(SQFloat value);
/* --------------------------------------------------------------------------------------------
* Attempt to bind a 32 bit floating point value at the referenced parameter index.
*/
void SetFloat32(SQFloat value);
/* --------------------------------------------------------------------------------------------
* Attempt to bind a 64 bit floating point value at the referenced parameter index.
*/
void SetFloat64(SQFloat value);
/* --------------------------------------------------------------------------------------------
* Attempt to bind a string value at the referenced parameter index.
*/
void SetString(StackStrF & value);
/* --------------------------------------------------------------------------------------------
* Attempt to bind a string value at the referenced parameter index.
*/
void SetStringRaw(const SQChar * value, SQInteger length = -1);
/* --------------------------------------------------------------------------------------------
* Attempt to bind a zeroed blob value at the referenced parameter index.
*/
void SetZeroBlob(SQInteger size);
/* --------------------------------------------------------------------------------------------
* Attempt to bind a blob value at the referenced parameter index.
*/
void SetBlob(const Object & value);
/* --------------------------------------------------------------------------------------------
* Attempt to bind a buffer value at the referenced parameter index.
*/
void SetData(const SqBuffer & value);
/* --------------------------------------------------------------------------------------------
* Attempt to bind a buffer value at the referenced parameter index.
*/
void SetDataEx(const SqBuffer & value, SQInteger offset, SQInteger length);
/* --------------------------------------------------------------------------------------------
* Attempt to bind a date value at the referenced parameter index.
*/
void SetDate(const Date & value);
/* --------------------------------------------------------------------------------------------
* Attempt to bind a date value at the referenced parameter index.
*/
void SetDateEx(SQInteger year, SQInteger month, SQInteger day);
/* --------------------------------------------------------------------------------------------
* Attempt to bind a time value at the referenced parameter index.
*/
void SetTime(const Time & value);
/* --------------------------------------------------------------------------------------------
* Attempt to bind a time value at the referenced parameter index.
*/
void SetTimeEx(SQInteger hour, SQInteger minute, SQInteger second);
/* --------------------------------------------------------------------------------------------
* Attempt to bind a date-time value at the referenced parameter index.
*/
void SetDatetime(const Datetime & value);
/* --------------------------------------------------------------------------------------------
* Attempt to bind a date-time value at the referenced parameter index.
*/
void SetDatetimeEx(SQInteger year, SQInteger month, SQInteger day, SQInteger hour, SQInteger minute, SQInteger second);
/* --------------------------------------------------------------------------------------------
* Attempt to bind the current timestamp at the referenced parameter index.
*/
void SetNow();
/* --------------------------------------------------------------------------------------------
* Attempt to bind a null value at the referenced parameter index.
*/
void SetNull();
};
/* ------------------------------------------------------------------------------------------------
* Used to manage and interact with statement columns.
*/
class SQLiteColumn
{
// --------------------------------------------------------------------------------------------
friend class SQLiteStatement;
private:
// --------------------------------------------------------------------------------------------
int32_t m_Index{-1}; // The index of the managed column.
StmtRef m_Handle{}; // The statement where the column exist.
protected:
/* --------------------------------------------------------------------------------------------
* Validate the managed statement handle and throw an error if invalid.
*/
#if defined(_DEBUG) || defined(SQMOD_EXCEPTLOC)
void Validate(const char * file, int32_t line) const;
#else
void Validate() const;
#endif // _DEBUG
/* --------------------------------------------------------------------------------------------
* Validate the managed statement handle and throw an error if invalid.
*/
#if defined(_DEBUG) || defined(SQMOD_EXCEPTLOC)
void ValidateCreated(const char * file, int32_t line) const;
#else
void ValidateCreated() const;
#endif // _DEBUG
/* --------------------------------------------------------------------------------------------
* Validate the managed statement handle and throw an error if invalid.
*/
#if defined(_DEBUG) || defined(SQMOD_EXCEPTLOC)
SQMOD_NODISCARD const StmtRef & GetValid(const char * file, int32_t line) const;
#else
SQMOD_NODISCARD const StmtRef & GetValid() const;
#endif // _DEBUG
/* --------------------------------------------------------------------------------------------
* Validate the managed statement handle and throw an error if invalid.
*/
#if defined(_DEBUG) || defined(SQMOD_EXCEPTLOC)
SQMOD_NODISCARD const StmtRef & GetCreated(const char * file, int32_t line) const;
#else
SQMOD_NODISCARD const StmtRef & GetCreated() const;
#endif // _DEBUG
/* --------------------------------------------------------------------------------------------
* Validate the statement reference and column index, and throw an error if they're invalid.
*/
#if defined(_DEBUG) || defined(SQMOD_EXCEPTLOC)
void ValidateColumn(int32_t idx, const char * file, int32_t line) const;
#else
void ValidateColumn(int32_t idx) const;
#endif // _DEBUG
/* --------------------------------------------------------------------------------------------
* Validate the statement reference and row, and throw an error if they're invalid.
*/
#if defined(_DEBUG) || defined(SQMOD_EXCEPTLOC)
void ValidateRow(const char * file, int32_t line) const;
#else
void ValidateRow() const;
#endif // _DEBUG
/* --------------------------------------------------------------------------------------------
* Modify the index to the specified value.
*/
void SetIndex(int32_t idx)
{
// Assign the index with a failsafe to invalid on error
AutoAssign< int32_t > aa(m_Index, -1, idx);
// Validate the obtained column index
SQMOD_VALIDATE_COLUMN(*this, idx);
// Don't fall back to the invalid index anymore
aa.Set(idx);
}
/* --------------------------------------------------------------------------------------------
* Modify the index to the specified value.
*/
void SetIndex(const SQChar * name)
{
SetIndex(SQMOD_GET_CREATED(*this)->GetColumnIndex(name));
}
/* --------------------------------------------------------------------------------------------
* Modify the index to the specified value.
*/
void SetIndex(const Object & column);
public:
/* --------------------------------------------------------------------------------------------
* Default constructor (null).
*/
SQLiteColumn() = default;
/* --------------------------------------------------------------------------------------------
* No column constructor.
*/
explicit SQLiteColumn(StmtRef stmt)
: m_Index(-1), m_Handle(std::move(stmt))
{
/* ... */
}
/* --------------------------------------------------------------------------------------------
* Index constructor.
*/
SQLiteColumn(StmtRef stmt, int32_t idx)
: m_Index(idx), m_Handle(std::move(stmt))
{
SQMOD_VALIDATE_COLUMN(*this, m_Index);
}
/* --------------------------------------------------------------------------------------------
* Name constructor.
*/
SQLiteColumn(const StmtRef & stmt, const SQChar * name)
: m_Index(stmt ? stmt->GetColumnIndex(name) : -1), m_Handle(stmt)
{
SQMOD_VALIDATE_COLUMN(*this, m_Index);
}
/* --------------------------------------------------------------------------------------------
* Dynamic constructor.
*/
SQLiteColumn(StmtRef stmt, const Object & column)
: m_Index(-1), m_Handle(std::move(stmt))
{
if (!m_Handle)
{
STHROWF("Invalid SQLite statement reference");
}
// Extract the index
SetIndex(column);
}
/* --------------------------------------------------------------------------------------------
* Copy constructor.
*/
SQLiteColumn(const SQLiteColumn & o) = default;
/* --------------------------------------------------------------------------------------------
* Move constructor.
*/
SQLiteColumn(SQLiteColumn && o) = default;
/* --------------------------------------------------------------------------------------------
* Copy assignment operator.
*/
SQLiteColumn & operator = (const SQLiteColumn & o) = default;
/* --------------------------------------------------------------------------------------------
* Move assignment operator.
*/
SQLiteColumn & operator = (SQLiteColumn && o) = default;
/* --------------------------------------------------------------------------------------------
* Perform an equality comparison between two table column indexes.
*/
bool operator == (const SQLiteColumn & o) const
{
return (m_Index == o.m_Index);
}
/* --------------------------------------------------------------------------------------------
* Perform an inequality comparison between two table column indexes.
*/
bool operator != (const SQLiteColumn & o) const
{
return (m_Index != o.m_Index);
}
/* --------------------------------------------------------------------------------------------
* Implicit conversion to boolean for use in boolean operations.
*/
operator bool () const // NOLINT(google-explicit-constructor,hicpp-explicit-conversions)
{
return m_Index >= 0;
}
/* --------------------------------------------------------------------------------------------
* Used by the script engine to convert an instance of this type to a string.
*/
SQMOD_NODISCARD String ToString() const
{
// Can we attempt to return the parameter name?
if (m_Handle && m_Index)
{
const SQChar * val = sqlite3_column_name(m_Handle->mPtr, m_Index);
// Return the value if valid
return val ? val : String{};
}
else
{
return fmt::format("{}", m_Index);
}
}
/* --------------------------------------------------------------------------------------------
* See whether the column is valid.
*/
SQMOD_NODISCARD bool IsValid() const
{
return m_Handle; // An invalid statement means an invalid column
}
/* --------------------------------------------------------------------------------------------
* Return the number of active references to the associated statement handle.
*/
SQMOD_NODISCARD uint32_t GetRefCount() const
{
return m_Handle.Count();
}
/* --------------------------------------------------------------------------------------------
* Retrieve the referenced column index.
*/
SQMOD_NODISCARD int32_t GetIndex() const
{
return m_Index;
}
/* --------------------------------------------------------------------------------------------
* Retrieve the referenced database statement.
*/
SQMOD_NODISCARD Object GetStatement() const;
/* --------------------------------------------------------------------------------------------
* Retrieve the referenced database connection.
*/
SQMOD_NODISCARD Object GetConnection() const;
/* --------------------------------------------------------------------------------------------
* Release the reference to the referenced database statement and column index.
*/
void Release()
{
m_Handle.Reset();
m_Index = -1;
}
/* --------------------------------------------------------------------------------------------
* Check whether the referenced column is null.
*/
SQMOD_NODISCARD bool IsNull() const;
/* --------------------------------------------------------------------------------------------
* Retrieve the name of the referenced column index.
*/
SQMOD_NODISCARD const SQChar * GetName() const;
/* --------------------------------------------------------------------------------------------
* Retrieve the column origin name if the library was compiled with such feature.
*/
SQMOD_NODISCARD const SQChar * GetOriginName() const;
/* --------------------------------------------------------------------------------------------
* Retrieve the type identifier of the referenced column index.
*/
SQMOD_NODISCARD int32_t GetType() const;
/* --------------------------------------------------------------------------------------------
* Retrieve the size in bytes of the referenced column index.
*/
SQMOD_NODISCARD int32_t GetBytes() const;
/* --------------------------------------------------------------------------------------------
* Retrieve the value inside the referenced column as a dynamic type.
*/
SQMOD_NODISCARD Object GetValue() const;
/* --------------------------------------------------------------------------------------------
* Retrieve the value inside the referenced column as a numeric type.
*/
SQMOD_NODISCARD Object GetNumber() const;
/* --------------------------------------------------------------------------------------------
* Retrieve the value inside the referenced column as a native script integer.
*/
SQMOD_NODISCARD SQInteger GetInteger() const;
/* --------------------------------------------------------------------------------------------
* Retrieve the value inside the referenced column as a native script floating point.
*/
SQMOD_NODISCARD SQFloat GetFloat() const;
/* --------------------------------------------------------------------------------------------
* Retrieve the value inside the referenced column as a long integer.
*/
SQMOD_NODISCARD SQInteger GetLong() const;
/* --------------------------------------------------------------------------------------------
* Retrieve the value inside the referenced column as a string.
*/
SQMOD_NODISCARD Object GetString() const;
/* --------------------------------------------------------------------------------------------
* Retrieve the value inside the referenced column as a boolean.
*/
SQMOD_NODISCARD bool GetBoolean() const;
/* --------------------------------------------------------------------------------------------
* Retrieve the value inside the referenced column as a character.
*/
SQMOD_NODISCARD SQChar GetChar() const;
/* --------------------------------------------------------------------------------------------
* Retrieve the value inside the referenced column as a memory buffer.
*/
SQMOD_NODISCARD Object GetBuffer() const;
/* --------------------------------------------------------------------------------------------
* Retrieve the value inside the referenced column as a memory blob.
*/
SQMOD_NODISCARD Object GetBlob() const;
};
/* ------------------------------------------------------------------------------------------------
* Used to manage and interact a database statement.
*/
class SQLiteStatement
{
private:
// --------------------------------------------------------------------------------------------
StmtRef m_Handle; // Reference to the managed statement.
protected:
/* --------------------------------------------------------------------------------------------
* Validate the managed statement handle and throw an error if invalid.
*/
#if defined(_DEBUG) || defined(SQMOD_EXCEPTLOC)
void Validate(const char * file, int32_t line) const;
#else
void Validate() const;
#endif // _DEBUG
/* --------------------------------------------------------------------------------------------
* Validate the managed statement handle and throw an error if invalid.
*/
#if defined(_DEBUG) || defined(SQMOD_EXCEPTLOC)
void ValidateCreated(const char * file, int32_t line) const;
#else
void ValidateCreated() const;
#endif // _DEBUG
/* --------------------------------------------------------------------------------------------
* Validate the managed statement handle and throw an error if invalid.
*/
#if defined(_DEBUG) || defined(SQMOD_EXCEPTLOC)
SQMOD_NODISCARD const StmtRef & GetValid(const char * file, int32_t line) const;
#else
SQMOD_NODISCARD const StmtRef & GetValid() const;
#endif // _DEBUG
/* --------------------------------------------------------------------------------------------
* Validate the managed statement handle and throw an error if invalid.
*/
#if defined(_DEBUG) || defined(SQMOD_EXCEPTLOC)
SQMOD_NODISCARD const StmtRef & GetCreated(const char * file, int32_t line) const;
#else
SQMOD_NODISCARD const StmtRef & GetCreated() const;
#endif // _DEBUG
/* --------------------------------------------------------------------------------------------
* Validate the statement reference and column index, and throw an error if they're invalid.
*/
#if defined(_DEBUG) || defined(SQMOD_EXCEPTLOC)
void ValidateColumn(int32_t idx, const char * file, int32_t line) const;
#else
void ValidateColumn(int32_t idx) const;
#endif // _DEBUG
/* --------------------------------------------------------------------------------------------
* Validate the statement reference and parameter index, and throw an error if they're invalid.
*/
#if defined(_DEBUG) || defined(SQMOD_EXCEPTLOC)
void ValidateParam(int32_t idx, const char * file, int32_t line) const;
#else
void ValidateParam(int32_t idx) const;
#endif // _DEBUG
/* --------------------------------------------------------------------------------------------
* Validate the statement reference and row, and throw an error if they're invalid.
*/
#if defined(_DEBUG) || defined(SQMOD_EXCEPTLOC)
void ValidateRow(const char * file, int32_t line) const;
#else
void ValidateRow() const;
#endif // _DEBUG
public:
/* --------------------------------------------------------------------------------------------
* Default constructor.
*/
SQLiteStatement()
: m_Handle()
{
/* ... */
}
/* --------------------------------------------------------------------------------------------
* Construct a statement under the specified connection using the specified string.
*/
SQLiteStatement(const ConnRef & connection, StackStrF & query)
: m_Handle(new SQLiteStmtHnd(connection))
{
SQMOD_GET_VALID(*this)->Create(query.mPtr, query.mLen);
}
/* --------------------------------------------------------------------------------------------
* Construct a statement under the specified connection using the specified string.
*/
SQLiteStatement(const SQLiteConnection & connection, StackStrF & query);
/* --------------------------------------------------------------------------------------------
* Direct handle constructor.
*/
explicit SQLiteStatement(StmtRef s)
: m_Handle(std::move(s))
{
/* ... */
}
/* --------------------------------------------------------------------------------------------
* Copy constructor.
*/
SQLiteStatement(const SQLiteStatement & o) = default;
/* --------------------------------------------------------------------------------------------
* Move constructor.
*/
SQLiteStatement(SQLiteStatement && o) = default;
/* --------------------------------------------------------------------------------------------
* Copy assignment operator.
*/
SQLiteStatement & operator = (const SQLiteStatement & o) = default;
/* --------------------------------------------------------------------------------------------
* Move assignment operator.
*/
SQLiteStatement & operator = (SQLiteStatement && o) = default;
/* --------------------------------------------------------------------------------------------
* Perform an equality comparison between two connections.
*/
bool operator == (const SQLiteStatement & o) const
{
return (m_Handle.Get() == o.m_Handle.Get());
}
/* --------------------------------------------------------------------------------------------
* Perform an inequality comparison between two connections.
*/
bool operator != (const SQLiteStatement & o) const
{
return (m_Handle.Get() != o.m_Handle.Get());
}
/* --------------------------------------------------------------------------------------------
* Implicit conversion to the raw connection handle.
*/
operator sqlite3_stmt * () // NOLINT(google-explicit-constructor,hicpp-explicit-conversions)
{
return m_Handle ? m_Handle->mPtr : nullptr;
}
/* --------------------------------------------------------------------------------------------
* Implicit conversion to the raw connection handle.
*/
operator sqlite3_stmt * () const // NOLINT(google-explicit-constructor,hicpp-explicit-conversions)
{
return m_Handle ? m_Handle->mPtr : nullptr;
}
/* --------------------------------------------------------------------------------------------
* Used by the script engine to convert an instance of this type to a string.
*/
SQMOD_NODISCARD const String & ToString() const
{
return m_Handle ? m_Handle->mQuery : NullString();
}
/* --------------------------------------------------------------------------------------------
* Retrieve the associated statement handle.
*/
SQMOD_NODISCARD const StmtRef & GetHandle() const
{
return m_Handle;
}
/* --------------------------------------------------------------------------------------------
* See whether the managed handle is valid.
*/
SQMOD_NODISCARD bool IsValid() const
{
return m_Handle;
}
/* --------------------------------------------------------------------------------------------
* See whether the managed statement is valid.
*/
SQMOD_NODISCARD bool IsPrepared() const
{
return m_Handle && (m_Handle->mPtr != nullptr);
}
/* --------------------------------------------------------------------------------------------
* Return the number of active references to this statement handle.
*/
SQMOD_NODISCARD uint32_t GetReferences() const
{
return m_Handle.Count();
}
/* --------------------------------------------------------------------------------------------
* Retrieve the associated database connection.
*/
SQMOD_NODISCARD Object GetConnection() const;
/* --------------------------------------------------------------------------------------------
* Release the reference to the associated database statement.
*/
void Release()
{
m_Handle.Reset();
}
/* --------------------------------------------------------------------------------------------
* Retrieve the last received status code.
*/
SQMOD_NODISCARD int32_t GetStatus() const
{
return SQMOD_GET_VALID(*this)->mStatus;
}
/* --------------------------------------------------------------------------------------------
* Return the numeric result code for the most recent failed API call (if any).
*/
SQMOD_NODISCARD int32_t GetErrorCode() const
{
return SQMOD_GET_VALID(*this)->ErrNo();
}
/* --------------------------------------------------------------------------------------------
* Return the extended numeric result code for the most recent failed API call (if any).
*/
SQMOD_NODISCARD int32_t GetExtendedErrorCode() const
{
return SQMOD_GET_VALID(*this)->ExErrNo();
}
/* --------------------------------------------------------------------------------------------
* Retrieve the message of the last received error code.
*/
SQMOD_NODISCARD const SQChar * GetErrStr() const
{
return SQMOD_GET_VALID(*this)->ErrStr();
}
/* --------------------------------------------------------------------------------------------
* Return the last error message associated with this database connection.
*/
SQMOD_NODISCARD const SQChar * GetErrMsg() const
{
return SQMOD_GET_VALID(*this)->ErrMsg();
}
/* --------------------------------------------------------------------------------------------
* Retrieve the amount of requested columns.
*/
SQMOD_NODISCARD int32_t GetColumns() const
{
return SQMOD_GET_VALID(*this)->mColumns;
}
/* --------------------------------------------------------------------------------------------
* Retrieve the amount of specified parameters.
*/
SQMOD_NODISCARD int32_t GetParameters() const
{
return SQMOD_GET_VALID(*this)->mParameters;
}
/* --------------------------------------------------------------------------------------------
* Retrieve the query string used to create this statement.
*/
SQMOD_NODISCARD const String & GetQuery() const
{
return SQMOD_GET_VALID(*this)->mQuery;
}
/* --------------------------------------------------------------------------------------------
* See if the last step retrieved a valid row.
*/
SQMOD_NODISCARD bool GetGood() const
{
return SQMOD_GET_CREATED(*this)->mGood;
}
/* --------------------------------------------------------------------------------------------
* See if there are any steps left.
*/
SQMOD_NODISCARD bool GetDone() const
{
return SQMOD_GET_CREATED(*this)->mDone;
}
/* --------------------------------------------------------------------------------------------
* Check whether a specific parameter index is within range.
*/
SQMOD_NODISCARD bool CheckParameter(int32_t idx) const
{
return SQMOD_GET_VALID(*this)->CheckParameter(idx);
}
/* --------------------------------------------------------------------------------------------
* Retrieve the parameter index associated with the specified name.
*/
SQMOD_NODISCARD int32_t GetParameterIndex(StackStrF & name) const
{
return sqlite3_bind_parameter_index(SQMOD_GET_VALID(*this)->mPtr, name.mPtr);
}
/* --------------------------------------------------------------------------------------------
* Retrieve the parameter name associated with the specified index.
*/
SQMOD_NODISCARD const SQChar * GetParameterName(int32_t idx) const
{
// Validate the specified index
if (!idx)
{
STHROWF("Invalid parameter index (%d)", idx);
}
// Attempt to locate the name at the specified index
const SQChar * name = sqlite3_bind_parameter_name(SQMOD_GET_VALID(*this)->mPtr, idx);
// Validate the obtained string
if (!name)
{
STHROWF("No such parameter exists (%d)", idx);
}
// Return the obtained string
return name;
}
/* --------------------------------------------------------------------------------------------
* Check whether a specific column index is within range.
*/
SQMOD_NODISCARD bool CheckColumn(int32_t idx) const
{
return SQMOD_GET_VALID(*this)->CheckColumn(idx);
}
/* --------------------------------------------------------------------------------------------
* Retrieve the amount of columns available in the current row.
*/
SQMOD_NODISCARD int32_t GetDataCount() const
{
return sqlite3_data_count(SQMOD_GET_VALID(*this)->mPtr);
}
/* --------------------------------------------------------------------------------------------
* Check whether the specified column is null.
*/
SQMOD_NODISCARD bool IsColumnNull(int32_t idx) const
{
return (sqlite3_column_type(SQMOD_GET_VALID(*this)->mPtr, idx) == SQLITE_NULL);
}
/* --------------------------------------------------------------------------------------------
* Retrieve the column index associated with the specified name.
*/
SQMOD_NODISCARD int32_t GetColumnIndex(StackStrF & name) const
{
return SQMOD_GET_VALID(*this)->GetColumnIndex(name.mPtr, name.mLen);
}
/* --------------------------------------------------------------------------------------------
* Retrieve the column name associated with the specified index.
*/
SQMOD_NODISCARD const SQChar * GetColumnName(int32_t idx) const
{
return sqlite3_column_name(SQMOD_GET_VALID(*this)->mPtr, idx);
}
/* --------------------------------------------------------------------------------------------
* Retrieve the column origin name if the library was compiled with such feature.
*/
SQMOD_NODISCARD const SQChar * GetColumnOriginName(int32_t idx) const // NOLINT(readability-convert-member-functions-to-static)
{
#ifdef SQLITE_ENABLE_COLUMN_METADATA
return sqlite3_column_origin_name(SQMOD_GET_VALID(*this)->mPtr, idx);
#else
// The compiler moans when extra warnings are enabled
SQMOD_UNUSED_VAR(idx);
// Stop the execution here!
STHROWF("The module was compiled without this feature");
// We have to return something
return _SC("");
#endif
}
/* --------------------------------------------------------------------------------------------
* Retrieve the type identifier of the column associated with the specified index.
*/
SQMOD_NODISCARD int32_t GetColumnType(int32_t idx) const
{
return sqlite3_column_type(SQMOD_GET_VALID(*this)->mPtr, idx);
}
/* --------------------------------------------------------------------------------------------
* Retrieve the size in bytes of the column associated with the specified index.
*/
SQMOD_NODISCARD int32_t GetColumnBytes(int32_t idx) const
{
return sqlite3_column_bytes(SQMOD_GET_VALID(*this)->mPtr, idx);
}
/* --------------------------------------------------------------------------------------------
* Reset the statement back to its initial position to be stepped again.
*/
SQLiteStatement & Reset();
/* --------------------------------------------------------------------------------------------
* Clear any values binded to this statement.
*/
SQLiteStatement & Clear();
/* --------------------------------------------------------------------------------------------
* Execute this statement and don't expect any rows to be returned.
*/
int32_t Exec();
/* --------------------------------------------------------------------------------------------
* Step the statement and expect a row to be returned.
*/
bool Step();
/* --------------------------------------------------------------------------------------------
* Retrieve the parameter with the specified name or index.
*/
SQMOD_NODISCARD Object GetParameter(const Object & param) const
{
return Object(new SQLiteParameter(m_Handle, param));
}
/* --------------------------------------------------------------------------------------------
* Attempt to bind a dynamic value at the specified parameter index.
*/
SQLiteStatement & SetValue(const Object & param, const Object & value)
{
SQLiteParameter(SQMOD_GET_CREATED(*this), param).SetValue(value);
// Allow chaining of operations
return *this;
}
/* --------------------------------------------------------------------------------------------
* Attempt to bind a boolean value at the specified parameter index.
*/
SQLiteStatement & SetBool(const Object & param, bool value)
{
SQLiteParameter(SQMOD_GET_CREATED(*this), param).SetBool(value);
// Allow chaining of operations
return *this;
}
/* --------------------------------------------------------------------------------------------
* Attempt to bind a character value at the specified parameter index.
*/
SQLiteStatement & SetChar(const Object & param, SQInteger value)
{
SQLiteParameter(SQMOD_GET_CREATED(*this), param).SetChar(value);
// Allow chaining of operations
return *this;
}
/* --------------------------------------------------------------------------------------------
* Attempt to bind a native integer value at the specified parameter index.
*/
SQLiteStatement & SetInteger(const Object & param, SQInteger value)
{
SQLiteParameter(SQMOD_GET_CREATED(*this), param).SetInteger(value);
// Allow chaining of operations
return *this;
}
/* --------------------------------------------------------------------------------------------
* Attempt to bind a signed 8 bit integer value at the specified parameter index.
*/
SQLiteStatement & SetInt8(const Object & param, SQInteger value)
{
SQLiteParameter(SQMOD_GET_CREATED(*this), param).SetInt8(value);
// Allow chaining of operations
return *this;
}
/* --------------------------------------------------------------------------------------------
* Attempt to bind an unsigned 8 bit integer value at the specified parameter index.
*/
SQLiteStatement & SetUint8(const Object & param, SQInteger value)
{
SQLiteParameter(SQMOD_GET_CREATED(*this), param).SetUint8(value);
// Allow chaining of operations
return *this;
}
/* --------------------------------------------------------------------------------------------
* Attempt to bind a signed 16 bit integer value at the specified parameter index.
*/
SQLiteStatement & SetInt16(const Object & param, SQInteger value)
{
SQLiteParameter(SQMOD_GET_CREATED(*this), param).SetInt16(value);
// Allow chaining of operations
return *this;
}
/* --------------------------------------------------------------------------------------------
* Attempt to bind an unsigned 16 bit integer value at the specified parameter index.
*/
SQLiteStatement & SetUint16(const Object & param, SQInteger value)
{
SQLiteParameter(SQMOD_GET_CREATED(*this), param).SetUint16(value);
// Allow chaining of operations
return *this;
}
/* --------------------------------------------------------------------------------------------
* Attempt to bind a signed 32 bit integer value at the specified parameter index.
*/
SQLiteStatement & SetInt32(const Object & param, SQInteger value)
{
SQLiteParameter(SQMOD_GET_CREATED(*this), param).SetInt32(value);
// Allow chaining of operations
return *this;
}
/* --------------------------------------------------------------------------------------------
* Attempt to bind an unsigned 32 bit integer value at the specified parameter index.
*/
SQLiteStatement & SetUint32(const Object & param, SQInteger value)
{
SQLiteParameter(SQMOD_GET_CREATED(*this), param).SetUint32(value);
// Allow chaining of operations
return *this;
}
/* --------------------------------------------------------------------------------------------
* Attempt to bind a signed 64 bit integer value at the specified parameter index.
*/
SQLiteStatement & SetInt64(const Object & param, SQInteger value)
{
SQLiteParameter(SQMOD_GET_CREATED(*this), param).SetInt64(value);
// Allow chaining of operations
return *this;
}
/* --------------------------------------------------------------------------------------------
* Attempt to bind an unsigned 64 bit integer value at the specified parameter index.
*/
SQLiteStatement & SetUint64(const Object & param, SQInteger value)
{
SQLiteParameter(SQMOD_GET_CREATED(*this), param).SetUint64(value);
// Allow chaining of operations
return *this;
}
/* --------------------------------------------------------------------------------------------
* Attempt to bind a native floating point value at the specified parameter index.
*/
SQLiteStatement & SetFloat(const Object & param, SQFloat value)
{
SQLiteParameter(SQMOD_GET_CREATED(*this), param).SetFloat(value);
// Allow chaining of operations
return *this;
}
/* --------------------------------------------------------------------------------------------
* Attempt to bind a 32 bit floating point value at the specified parameter index.
*/
SQLiteStatement & SetFloat32(const Object & param, SQFloat value)
{
SQLiteParameter(SQMOD_GET_CREATED(*this), param).SetFloat32(value);
// Allow chaining of operations
return *this;
}
/* --------------------------------------------------------------------------------------------
* Attempt to bind a 64 bit floating point value at the specified parameter index.
*/
SQLiteStatement & SetFloat64(const Object & param, SQFloat value)
{
SQLiteParameter(SQMOD_GET_CREATED(*this), param).SetFloat64(value);
// Allow chaining of operations
return *this;
}
/* --------------------------------------------------------------------------------------------
* Attempt to bind a string value at the specified parameter index.
*/
SQLiteStatement & SetString(const Object & param, StackStrF & value)
{
SQLiteParameter(SQMOD_GET_CREATED(*this), param).SetString(value);
// Allow chaining of operations
return *this;
}
/* --------------------------------------------------------------------------------------------
* Attempt to bind a zeroed blob value at the specified parameter index.
*/
SQLiteStatement & SetZeroBlob(const Object & param, SQInteger size)
{
SQLiteParameter(SQMOD_GET_CREATED(*this), param).SetZeroBlob(size);
// Allow chaining of operations
return *this;
}
/* --------------------------------------------------------------------------------------------
* Attempt to bind a blob value at the specified parameter index.
*/
SQLiteStatement & SetBlob(const Object & param, const Object & value)
{
SQLiteParameter(SQMOD_GET_CREATED(*this), param).SetBlob(value);
// Allow chaining of operations
return *this;
}
/* --------------------------------------------------------------------------------------------
* Attempt to bind a buffer value at the specified parameter index.
*/
SQLiteStatement & SetData(const Object & param, const Object & value)
{
SQLiteParameter(SQMOD_GET_CREATED(*this), param).SetData(value.Cast< const SqBuffer & >());
// Allow chaining of operations
return *this;
}
/* --------------------------------------------------------------------------------------------
* Attempt to bind a date value at the specified parameter index.
*/
SQLiteStatement & SetDate(const Object & param, const Object & value)
{
SQLiteParameter(SQMOD_GET_CREATED(*this), param).SetDate(value.Cast< const Date & >());
// Allow chaining of operations
return *this;
}
/* --------------------------------------------------------------------------------------------
* Attempt to bind a date value at the specified parameter index.
*/
SQLiteStatement & SetDateEx(const Object & param, SQInteger year, SQInteger month, SQInteger day)
{
SQLiteParameter(SQMOD_GET_CREATED(*this), param).SetDateEx(year, month, day);
// Allow chaining of operations
return *this;
}
/* --------------------------------------------------------------------------------------------
* Attempt to bind a time value at the specified parameter index.
*/
SQLiteStatement & SetTime(const Object & param, const Object & value)
{
SQLiteParameter(SQMOD_GET_CREATED(*this), param).SetTime(value.Cast< const Time & >());
// Allow chaining of operations
return *this;
}
/* --------------------------------------------------------------------------------------------
* Attempt to bind a time value at the specified parameter index.
*/
SQLiteStatement & SetTimeEx(const Object & param, SQInteger hour, SQInteger minute, SQInteger second)
{
SQLiteParameter(SQMOD_GET_CREATED(*this), param).SetTimeEx(hour, minute, second);
// Allow chaining of operations
return *this;
}
/* --------------------------------------------------------------------------------------------
* Attempt to bind a date-time value at the specified parameter index.
*/
SQLiteStatement & SetDatetime(const Object & param, const Object & value)
{
SQLiteParameter(SQMOD_GET_CREATED(*this), param).SetDatetime(value.Cast< const Datetime & >());
// Allow chaining of operations
return *this;
}
/* --------------------------------------------------------------------------------------------
* Attempt to bind a date-time value at the specified parameter index.
*/
SQLiteStatement & SetDatetimeEx(const Object & param, SQInteger year, SQInteger month, SQInteger day,
SQInteger hour, SQInteger minute, SQInteger second)
{
SQLiteParameter(SQMOD_GET_CREATED(*this), param).SetDatetimeEx(year, month, day, hour, minute, second);
// Allow chaining of operations
return *this;
}
/* --------------------------------------------------------------------------------------------
* Attempt to bind the current timestamp at the specified parameter index.
*/
SQLiteStatement & SetNow(const Object & param)
{
SQLiteParameter(SQMOD_GET_CREATED(*this), param).SetNow();
// Allow chaining of operations
return *this;
}
/* --------------------------------------------------------------------------------------------
* Attempt to bind a null value at the specified parameter index.
*/
SQLiteStatement & SetNull(const Object & param)
{
SQLiteParameter(SQMOD_GET_CREATED(*this), param).SetNull();
// Allow chaining of operations
return *this;
}
/* --------------------------------------------------------------------------------------------
* Attempt to bind the values from an array starting at the specified index.
*/
SQLiteStatement & SetArray(int32_t idx, const Array & arr);
/* --------------------------------------------------------------------------------------------
* Attempt to bind the values from an associative container.
*/
SQLiteStatement & SetTable(const Table & tbl);
/* --------------------------------------------------------------------------------------------
* Retrieve the column with the specified name or index.
*/
SQMOD_NODISCARD Object GetColumn(const Object & column) const
{
return Object(new SQLiteColumn(m_Handle, column));
}
/* --------------------------------------------------------------------------------------------
* Retrieve the value inside the referenced column as a dynamic type.
*/
SQMOD_NODISCARD Object GetValue(const Object & column) const
{
return SQLiteColumn(SQMOD_GET_CREATED(*this), column).GetValue();
}
/* --------------------------------------------------------------------------------------------
* Retrieve the value inside the referenced column as a numeric type.
*/
SQMOD_NODISCARD Object GetNumber(const Object & column) const
{
return SQLiteColumn(SQMOD_GET_CREATED(*this), column).GetNumber();
}
/* --------------------------------------------------------------------------------------------
* Retrieve the value inside the referenced column as a native script integer.
*/
SQMOD_NODISCARD SQInteger GetInteger(const Object & column) const
{
return SQLiteColumn(SQMOD_GET_CREATED(*this), column).GetInteger();
}
/* --------------------------------------------------------------------------------------------
* Retrieve the value inside the referenced column as a native script floating point.
*/
SQMOD_NODISCARD SQFloat GetFloat(const Object & column) const
{
return SQLiteColumn(SQMOD_GET_CREATED(*this), column).GetFloat();
}
/* --------------------------------------------------------------------------------------------
* Retrieve the value inside the referenced column as a long integer.
*/
SQMOD_NODISCARD Object GetLong(const Object & column) const
{
return SQLiteColumn(SQMOD_GET_CREATED(*this), column).GetLong();
}
/* --------------------------------------------------------------------------------------------
* Retrieve the value inside the referenced column as a string.
*/
SQMOD_NODISCARD Object GetString(const Object & column) const
{
return SQLiteColumn(SQMOD_GET_CREATED(*this), column).GetString();
}
/* --------------------------------------------------------------------------------------------
* Retrieve the value inside the referenced column as a boolean.
*/
SQMOD_NODISCARD bool GetBoolean(const Object & column) const
{
return SQLiteColumn(SQMOD_GET_CREATED(*this), column).GetBoolean();
}
/* --------------------------------------------------------------------------------------------
* Retrieve the value inside the referenced column as a character.
*/
SQMOD_NODISCARD SQChar GetChar(const Object & column) const
{
return SQLiteColumn(SQMOD_GET_CREATED(*this), column).GetChar();
}
/* --------------------------------------------------------------------------------------------
* Retrieve the value inside the referenced column as a memory buffer.
*/
SQMOD_NODISCARD Object GetBuffer(const Object & column) const
{
return SQLiteColumn(SQMOD_GET_CREATED(*this), column).GetBuffer();
}
/* --------------------------------------------------------------------------------------------
* Retrieve the value inside the referenced column as a memory blob.
*/
SQMOD_NODISCARD Object GetBlob(const Object & column) const
{
return SQLiteColumn(SQMOD_GET_CREATED(*this), column).GetBlob();
}
/* --------------------------------------------------------------------------------------------
* Retrieve the row as an array container.
*/
SQMOD_NODISCARD Array GetArray() const
{
return GetArray(0, SQMOD_GET_CREATED(*this)->mColumns);
}
/* --------------------------------------------------------------------------------------------
* Retrieve the row as an array container.
*/
SQMOD_NODISCARD Array GetArray(int32_t min) const
{
return GetArray(min, SQMOD_GET_CREATED(*this)->mColumns);
}
/* --------------------------------------------------------------------------------------------
* Retrieve the row as an array container.
*/
SQMOD_NODISCARD Array GetArray(int32_t min, int32_t max) const;
/* --------------------------------------------------------------------------------------------
* Retrieve the row as an associative container.
*/
SQMOD_NODISCARD Table GetTable() const
{
// Is there something to return?
if (SQMOD_GET_CREATED(*this)->mColumns > 0)
{
return GetTable(0, m_Handle->mColumns - 1);
}
// Fallback to empty table
return NullTable();
}
/* --------------------------------------------------------------------------------------------
* Retrieve the row as an associative container.
*/
SQMOD_NODISCARD Table GetTable(int32_t min) const
{
// Is there something to return?
if (SQMOD_GET_CREATED(*this)->mColumns > 0)
{
return GetTable(min, m_Handle->mColumns - 1);
}
// Fallback to empty table
return NullTable();
}
/* --------------------------------------------------------------------------------------------
* Retrieve the row as an associative container.
*/
SQMOD_NODISCARD Table GetTable(int32_t min, int32_t max) const;
};
/* ------------------------------------------------------------------------------------------------
* Implements the RAII pattern for database transactions.
*/
class SQLiteTransaction
{
public:
/* --------------------------------------------------------------------------------------------
* Construct by taking the handle from a connection.
*/
explicit SQLiteTransaction(const SQLiteConnection & db);
/* --------------------------------------------------------------------------------------------
* Construct using the direct connection handle.
*/
explicit SQLiteTransaction(ConnRef db);
/* --------------------------------------------------------------------------------------------
* Copy constructor. (disabled)
*/
SQLiteTransaction(const SQLiteTransaction & o) = delete;
/* --------------------------------------------------------------------------------------------
* Move constructor. (disabled)
*/
SQLiteTransaction(SQLiteTransaction && o) = delete;
/* --------------------------------------------------------------------------------------------
* Destructor.
*/
~SQLiteTransaction();
/* --------------------------------------------------------------------------------------------
* Copy assignment operator. (disabled)
*/
SQLiteTransaction & operator = (const SQLiteTransaction & o) = delete;
/* --------------------------------------------------------------------------------------------
* Move assignment operator. (disabled)
*/
SQLiteTransaction & operator = (SQLiteTransaction && o) = delete;
/* --------------------------------------------------------------------------------------------
* Used by the script engine to convert an instance of this type to a string.
*/
SQMOD_NODISCARD const String & ToString() const
{
return m_Handle ? m_Handle->mName : NullString();
}
/* --------------------------------------------------------------------------------------------
* See whether the managed handle is valid.
*/
SQMOD_NODISCARD bool IsValid() const
{
return m_Handle;
}
/* --------------------------------------------------------------------------------------------
* Attempt to commit changes to the database.
*/
bool Commit();
/* --------------------------------------------------------------------------------------------
* See whether the change during this transaction were successfully committed.
*/
SQMOD_NODISCARD bool Commited() const
{
return m_Committed;
}
private:
// --------------------------------------------------------------------------------------------
ConnRef m_Handle{}; // The database connection handle where the transaction began.
bool m_Committed{false}; // Whether changes were successfully committed to the database.
};
} // Namespace:: SqMod
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