OpenJPA
  1. OpenJPA
  2. OPENJPA-1376

@SequenceGenerator allocationSize incorrect implementation

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      Description

      OpenJpa use allocationSize parameter on NativeJDBCSeq to set the sequence cache value.

      But one "JSR 220: Enterprise JavaBeansTM,Version 3.0" , the allocationSize is : "The amount to increment by when allocating sequence
      numbers from the sequence."

      Allocating is used to limit the number of access to the sequence or table not to set the sequence cache value !

      If allocationSize=50, the sequence need to be call one time on each 50 call on AbstractJDBCSeq.next().

      1 call on AbstractJDBCSeq.next(). call the sequence or table
      2 call : return previous value + 1;
      3 call : return previous value + 2;
      ...
      51 call :re-call the sequence
      52 return previous value + 1
      ...

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            • Assignee:
              Milosz Tylenda
              Reporter:
              Yves
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