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EclipseLink/Development/DBWS/SQLBatchOperations
< EclipseLink | Development | DBWS
Batch SQL operations
Initial contribution by customer Rainer Schild: A DBWSBuilder file that looks something like:
<batch-sql name="do_trace_analysis" lineDelimiter=";" > <text> <![CDATA[ START TRANSACTION; SELECT @A:=SUM(salary) FROM table1 WHERE type=1; UPDATE table2 SET summary=@A WHERE type=1; COMMIT; ]]> </text> </batch-sql>
Variable bindings
Need to figure out 2 types of variables:
- parameters passed in (use JDBC '?' markers?)
- temporary variables (@A)
=== Transaction Horizon
- explicit (see above)
- implicit - whole block is implicitly a start ... commit transaction
- nesting - can batch-sql operations be batched together: what then happens to the transaction horizon?