Module org.eclipse.persistence.core
Package org.eclipse.persistence.internal.sequencing

Interface Sequencing

All Known Subinterfaces:
SequencingServer
public interface Sequencing

Purpose: Define interface to use sequencing.

Description: This interface accessed through Session.getSequencing() method. Used by EclipseLink internals to obtain sequencing values.

Responsibilities:

  • Provides sequencing objects and supporting APIs.

  • Field Summary

    Fields
    Modifier and Type
    Field
    Description
    static final int
    AFTER_INSERT
     
    static final int
    BEFORE_INSERT
     
    static final int
    UNDEFINED
     

  • Method Summary

    Modifier and Type
    Method
    Description
    Object
    getNextValue(Class<?> cls)
    INTERNAL: Return the newly-generated sequencing value.
    int
    whenShouldAcquireValueForAll()
    INTERNAL: Indicates when sequencing value should be acquired for all classes.

  • Field Details

  • Method Details

    • whenShouldAcquireValueForAll

      int whenShouldAcquireValueForAll()
      INTERNAL: Indicates when sequencing value should be acquired for all classes. There are just three possible return values: BEFORE_INSERT, UNDEFINED, AFTER_INSERT. Used as a shortcut to avoid individual checks for each class: shouldAcquireValueAfterInsert(Class cls). Currently UNDEFINED only happens in a case of a SessionBroker: session1 - BEFORE_INSERT, session2 - AFTER_INSERT

    • getNextValue

      Object getNextValue(Class<?> cls)
      INTERNAL: Return the newly-generated sequencing value.
      Parameters:
      cls - Class for which the sequencing value is generated.