How to use

getWriteLockValue

method

in

org.eclipse.persistence.internal.descriptors.OptimisticLockingPolicy

/**
 * INTERNAL:
 * This method should ONLY be used to set the initial writeLock value for
 * an ObjectChangeSet when it is first built.
 */
public void setOptimisticLockingPolicyAndInitialWriteLockValue(OptimisticLockingPolicy optimisticLockingPolicy, AbstractSession session) {
  // ignore optimistic locking policy if it can't compare lock values (like FieldsLockingPolicy).
  if(optimisticLockingPolicy.supportsWriteLockValuesComparison()) {
    this.optimisticLockingPolicy = optimisticLockingPolicy;
    this.initialWriteLockValue = optimisticLockingPolicy.getWriteLockValue(cloneObject, getPrimaryKeys(), session);
  }
}

/**
 * INTERNAL:
 * This method should ONLY be used to set the initial writeLock value for
 * an ObjectChangeSet when it is first built.
 */
public void setOptimisticLockingPolicyAndInitialWriteLockValue(OptimisticLockingPolicy optimisticLockingPolicy, AbstractSession session) {
  // ignore optimistic locking policy if it can't compare lock values (like FieldsLockingPolicy).
  if(optimisticLockingPolicy.supportsWriteLockValuesComparison()) {
    this.optimisticLockingPolicy = optimisticLockingPolicy;
    this.initialWriteLockValue = optimisticLockingPolicy.getWriteLockValue(cloneObject, getId(), session);
  }
}

/**
 * INTERNAL:
 * This method should ONLY be used to set the initial writeLock value for
 * an ObjectChangeSet when it is first built.
 */
public void setOptimisticLockingPolicyAndInitialWriteLockValue(OptimisticLockingPolicy optimisticLockingPolicy, AbstractSession session) {
  // ignore optimistic locking policy if it can't compare lock values (like FieldsLockingPolicy).
  if(optimisticLockingPolicy.supportsWriteLockValuesComparison()) {
    this.optimisticLockingPolicy = optimisticLockingPolicy;
    this.initialWriteLockValue = optimisticLockingPolicy.getWriteLockValue(cloneObject, getId(), session);
  }
}

if (descriptor.usesOptimisticLocking() && descriptor.usesVersionLocking()) {
  Object writeLockValue = descriptor.getOptimisticLockingPolicy().getWriteLockValue(object, key, session);
  String version = (String) session.getPlatform().convertObject(writeLockValue, String.class);
  writer.write(LoggingLocalization.buildMessage("key_version_identity_hash_code_object", new Object[] { cr, key, "\t", hashCode, object, version }));

if (descriptor.usesOptimisticLocking() && descriptor.usesVersionLocking()) {
  Object writeLockValue = descriptor.getOptimisticLockingPolicy().getWriteLockValue(object, key, session);
  String version = (String) session.getPlatform().convertObject(writeLockValue, String.class);
  writer.write(LoggingLocalization.buildMessage("key_version_identity_hash_code_object", new Object[] { cr, key, "\t", hashCode, object, version }));

Object originalWriteLockValue = optimisticLockingPolicy.getWriteLockValue(original, getId(), session);

Object originalWriteLockValue = optimisticLockingPolicy.getWriteLockValue(original, getId(), session);

Object originalWriteLockValue = optimisticLockingPolicy.getWriteLockValue(original, getPrimaryKeys(), session);