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64 lines
1.9 KiB
Plaintext
64 lines
1.9 KiB
Plaintext
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POCO Data Release Notes
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POCO Data Library
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!!!Release 1.5.0
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The Data library has been available since the 1.2 release. For the 1.5.0 release, a few things have been changed in an incompatible way that requires changes
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to existing code.
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!!Summary of Changes
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- Poco::Data::RowFormatter class for convenient output formatting.
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- Stored procedures support (for databases and ODBC drivers that support it).
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- Improved transaction support (for databases that support it).
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- Bulk execution (for ODBC drivers that support it).
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- Batch queries and multiple results (for databases and ODBC drivers that support it).
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- Stored procedures/functions support (for databases that support it)
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- New Poco::Data::SessionPoolContainer class.
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!!Incompatible Changes and Possible Transition Issues
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Keywords (use, into, limit, etc) now reside in Poco::Data::Keywords namespace.
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!!!Release 1.5.2
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!!Summary of Changes
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- framework-wide refactoring to use SharedPtr-based garbage collection
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!!Incompatible Changes and Possible Transition Issues
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Internally, (Abstract)Binder, Extracion nas (where applicable) Preparator are garbage collected.
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While old way of passing pointers to TypeHandler may still work, it is strongly recommended
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to pass SharedPtr to handler functions, e.g. :
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template <>
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class TypeHandler<Person>
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{
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public:
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static std::size_t size()
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{
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return 3;
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}
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static void bind(std::size_t pos, const Person& person, AbstractBinder::Ptr pBinder, AbstractBinder::Direction dir)
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{
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TypeHandler<std::string>::bind(pos++, person.name, pBinder, dir);
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// ...
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}
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static void extract(std::size_t pos, Person& person, const Person& deflt, AbstractExtractor::Ptr pExtr)
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{
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TypeHandler<std::string>::extract(pos++, person.name, deflt.name, pExtr);
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// ...
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}
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static void prepare(std::size_t pos, const Person& person, AbstractPreparator::Ptr pPrep)
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{
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TypeHandler<std::string>::prepare(pos++, person.name, pPrep);
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// ...
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}
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};
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