| [eclipselink-dev] SVN main commit: Bug#211700 - Batch reading using exists |
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SVN main commit: Bug#211700 - Batch reading using exists https://bugs.eclipse.org/bugs/show_bug.cgi?id=211700 doc, http://wiki.eclipse.org/EclipseLink/DesignDocs/298985#Batching_reading_using_exist_and_IN Adds support for a BatchFetchType and EXISTS option for performing batch
fetching. This allows batch fetching on lobs, and may improve efficiency in some
queries. Code review: Andrei (pending) Changes: - Adds support for batch fetch type to batch reading tests, and runs all
batch reading tests with each batch fetch type (JOIN, EXISTS, IN) - Added @BatchFetch annotation and orm.xml for JPA mappings - Added "eclipselink.batch.type" and "eclipselink.batch.size"
query hints. - Some minor fixes, optimizations, cleanup, @Overrides, and changes of
Vector to List. - Fixed JPQL parsing to not create duplicate ExpressinBuilders, this is
required for sub-selects to work correctly. - Fixed ReportQuery from resetting its ExpressionBuilder - Switched batchReading flag in ForeignReferenceMapping to
batchFetchType to allow type to be set - Added support for batch fetching using EXISTS option (required several
fixes to our sub-select support) - Added BatchFetchPolicy to queries to encapsulate batch fetching state,
including type and size - Move batch fetching support up to ObjectLevelReadQuery from
ReadAllQuery, to allow nested batches to be set on ReadObjectQuerys |