org.eclipse.persistence.internal.descriptors.OptimisticLockingPolicy.getWriteLockValue java code examples

Common ways to obtain OptimisticLockingPolicy

private void myMethod () {
 OptimisticLockingPolicy o =ClassDescriptor descriptor;descriptor.getOptimisticLockingPolicy()
UnidirectionalOneToManyMapping unidirectionalOneToManyMapping;unidirectionalOneToManyMapping.getReferenceDescriptor().getOptimisticLockingPolicy()
ExpressionQueryMechanism expressionQueryMechanism;expressionQueryMechanism.getDescriptor().getOptimisticLockingPolicy()
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}

/**
 * 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);

Javadoc

INTERNAL: This method will return the optimistic lock value for the object #see this method in VersionLockingPolicy

Popular methods of OptimisticLockingPolicy

addLockFieldsToUpdateRow
INTERNAL: Add update fields for template row. These are any unmapped fields required to write in an
addLockValuesToTranslationRow
INTERNAL: The method should update the translation row with the correct write lock values. This meth
buildDeleteExpression
INTERNAL: When given an expression, this method will return a new expression with the optimistic loc
buildUpdateExpression
INTERNAL: When given an expression, this method will return a new expression with the optimistic loc
clone
compareWriteLockValues
INTERNAL: This method shouldn't be called if supportsWriteLockValuesComparison() returns false. This
getBaseValue
INTERNAL: This is the base value that is older than all other values, it is used in the place of nul
getValueToPutInCache
INTERNAL: Return the value that should be stored in the identity map. If the value is not stored in
getVersionDifference
PUBLIC: Return the number of versions different between these objects.
getWriteLockField
INTERNAL: Return the write lock field. #see this method in VersionLockingPolicy
getWriteLockUpdateExpression
INTERNAL: This method will return an expression that is used to update its optimistic locking field
initialize
INTERNAL: It is responsible for initializing the policy. #see this method in VersionLockingPolicy

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How to use getWriteLockValuemethodin org.eclipse.persistence.internal.descriptors.OptimisticLockingPolicy

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How to use
getWriteLockValue
method
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org.eclipse.persistence.internal.descriptors.OptimisticLockingPolicy