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SqMod/modules/sqlite/Parameter.hpp

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#ifndef _SQSQLITE_PARAMETER_HPP_
#define _SQSQLITE_PARAMETER_HPP_
// ------------------------------------------------------------------------------------------------
#include "Handle/Statement.hpp"
// ------------------------------------------------------------------------------------------------
#include <cctype>
// ------------------------------------------------------------------------------------------------
namespace SqMod {
/* ------------------------------------------------------------------------------------------------
* Used to manage and interact with parameters from a database statement.
*/
class Parameter
{
// --------------------------------------------------------------------------------------------
friend class Statement;
private:
// --------------------------------------------------------------------------------------------
Int32 m_Index; // 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(CCStr file, Int32 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(CCStr file, Int32 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)
const StmtRef & GetValid(CCStr file, Int32 line) const;
#else
const StmtRef & GetValid() const;
#endif // _DEBUG
/* --------------------------------------------------------------------------------------------
* Validate the managed statement handle and throw an error if invalid.
*/
#if defined(_DEBUG) || defined(SQMOD_EXCEPTLOC)
const StmtRef & GetCreated(CCStr file, Int32 line) const;
#else
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 idx, CCStr file, Int32 line) const;
#else
void ValidateParam(Int32 idx) const;
#endif // _DEBUG
/* --------------------------------------------------------------------------------------------
* Modify the index to the specified value.
*/
void SetIndex(Int32 idx)
{
// Assign the index with a failsafe to invalid on error
AutoAssign< Int32 > 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(CSStr 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).
*/
Parameter()
: m_Index(0), m_Handle()
{
/* ... */
}
/* --------------------------------------------------------------------------------------------
* No parameter constructor.
*/
Parameter(const StmtRef & stmt)
: m_Index(0), m_Handle(stmt)
{
/* ... */
}
/* --------------------------------------------------------------------------------------------
* Index constructor.
*/
Parameter(const StmtRef & stmt, Int32 idx)
: m_Index(idx), m_Handle(stmt)
{
SQMOD_VALIDATE_PARAM(*this, m_Index);
}
/* --------------------------------------------------------------------------------------------
* Name constructor.
*/
Parameter(const StmtRef & stmt, CSStr name)
: m_Index(stmt ? sqlite3_bind_parameter_index(stmt->mPtr, name) : 0), m_Handle(stmt)
{
SQMOD_VALIDATE_PARAM(*this, m_Index);
}
/* --------------------------------------------------------------------------------------------
* Dynamic constructor.
*/
Parameter(const StmtRef & stmt, const Object & param)
: m_Index(0), m_Handle(stmt)
{
if (!m_Handle)
{
STHROWF("Invalid SQLite statement reference");
}
// Extract the index
SetIndex(param);
}
/* --------------------------------------------------------------------------------------------
* Copy constructor.
*/
Parameter(const Parameter & o) = default;
/* --------------------------------------------------------------------------------------------
* Move constructor.
*/
Parameter(Parameter && o) = default;
/* --------------------------------------------------------------------------------------------
* Copy assignment operator.
*/
Parameter & operator = (const Parameter & o) = default;
/* --------------------------------------------------------------------------------------------
* Move assignment operator.
*/
Parameter & operator = (Parameter && o) = default;
/* --------------------------------------------------------------------------------------------
* Perform an equality comparison between two parameter indexes.
*/
bool operator == (const Parameter & o) const
{
return (m_Index == o.m_Index);
}
/* --------------------------------------------------------------------------------------------
* Perform an inequality comparison between two parameter indexes.
*/
bool operator != (const Parameter & o) const
{
return (m_Index != o.m_Index);
}
/* --------------------------------------------------------------------------------------------
* Implicit conversion to boolean for use in boolean operations.
*/
operator bool () const
{
return m_Index >= 0;
}
/* --------------------------------------------------------------------------------------------
* Used by the script engine to convert an instance of this type to a string.
*/
CSStr ToString() const
{
CSStr val = nullptr;
// Can we attempt to return the parameter name?
if (m_Handle && m_Index)
{
val = sqlite3_bind_parameter_name(m_Handle->mPtr, m_Index);
}
else
{
val = ToStrF(_SC("%d"), m_Index);
}
// Return the value if valid
return val ? val : _SC("");
}
/* --------------------------------------------------------------------------------------------
* See whether this statement is valid.
*/
bool IsValid() const
{
return m_Handle; // An invalid statement means an invalid parameter
}
/* --------------------------------------------------------------------------------------------
* Return the number of active references to this statement handle.
*/
Uint32 GetRefCount() const
{
return m_Handle.Count();
}
/* --------------------------------------------------------------------------------------------
* Retrieve the associated parameter index.
*/
Int32 GetIndex() const
{
return m_Index;
}
/* --------------------------------------------------------------------------------------------
* Retrieve the associated database statement.
*/
Object GetStatement() const;
/* --------------------------------------------------------------------------------------------
* Retrieve the associated database connection.
*/
Object GetConnection() const;
/* --------------------------------------------------------------------------------------------
* Retrieve the name of the referenced parameter.
*/
CSStr 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(const Object & value);
/* --------------------------------------------------------------------------------------------
* Attempt to bind an unsigned 64 bit integer value at the referenced parameter index.
*/
void SetUint64(const Object & 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(const StackStrF & value);
/* --------------------------------------------------------------------------------------------
* Attempt to bind a string value at the referenced parameter index.
*/
void SetStringRaw(CSStr 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 Object & value);
/* --------------------------------------------------------------------------------------------
* Attempt to bind a date value at the referenced parameter index.
*/
void SetDate(const Object & 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 Object & 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 Object & 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();
};
} // Namespace:: SqMod
#endif // _SQSQLITE_PARAMETER_HPP_
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