org.eclipse.persistence.internal.descriptors.OptimisticLockingPolicy.getValueToPutInCache 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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}

/**
 * Store the query object in the identity map.
 */
protected void registerObjectInIdentityMap(Object object, ClassDescriptor descriptor, AbstractSession session) {
  WriteObjectQuery query = getWriteObjectQuery();
  if (query.shouldMaintainCache()) {
    if (descriptor.usesOptimisticLocking()) {
      Object optimisticLockValue = descriptor.getOptimisticLockingPolicy().getValueToPutInCache(query.getModifyRow(), session);
      session.getIdentityMapAccessorInstance().putInIdentityMap(object, query.getPrimaryKey(), optimisticLockValue, System.currentTimeMillis(), descriptor);
    } else {
      session.getIdentityMapAccessorInstance().putInIdentityMap(object, query.getPrimaryKey(), null, System.currentTimeMillis(), descriptor);
    }
  }
}

/**
 * Store the query object in the identity map.
 */
protected void registerObjectInIdentityMap(Object object, ClassDescriptor descriptor, AbstractSession session) {
  WriteObjectQuery query = getWriteObjectQuery();
  if (query.shouldMaintainCache()) {
    if (descriptor.usesOptimisticLocking()) {
      Object optimisticLockValue = descriptor.getOptimisticLockingPolicy().getValueToPutInCache(query.getModifyRow(), session);
      session.getIdentityMapAccessorInstance().putInIdentityMap(object, query.getPrimaryKey(), optimisticLockValue, System.currentTimeMillis(), descriptor);
    } else {
      session.getIdentityMapAccessorInstance().putInIdentityMap(object, query.getPrimaryKey(), null, System.currentTimeMillis(), descriptor);
    }
  }
}

/**
 * Store the query object in the identity map.
 */
protected void registerObjectInIdentityMap(Object object, ClassDescriptor descriptor, AbstractSession session) {
  WriteObjectQuery query = getWriteObjectQuery();
  if (query.shouldMaintainCache()) {
    if (descriptor.usesOptimisticLocking()) {
      Object optimisticLockValue = descriptor.getOptimisticLockingPolicy().getValueToPutInCache(query.getModifyRow(), session);
      session.getIdentityMapAccessorInstance().putInIdentityMap(object, query.getPrimaryKey(), optimisticLockValue, System.currentTimeMillis(), descriptor);
    } else {
      session.getIdentityMapAccessorInstance().putInIdentityMap(object, query.getPrimaryKey(), null, System.currentTimeMillis(), descriptor);
    }
  }
}

/**
 * Initialize a cache key.  Called by buildObject and now also by
 * buildWorkingCopyCloneFromRow.
 */
protected void copyQueryInfoToCacheKey(CacheKey cacheKey, ObjectBuildingQuery query, AbstractRecord databaseRow, AbstractSession session, ClassDescriptor concreteDescriptor) {
  //CR #4365 - used to prevent infinite recursion on refresh object cascade all
  cacheKey.setLastUpdatedQueryId(query.getQueryId());
  if (concreteDescriptor.usesOptimisticLocking()) {
    OptimisticLockingPolicy policy = concreteDescriptor.getOptimisticLockingPolicy();
    Object cacheValue = policy.getValueToPutInCache(databaseRow, session);
    //register the object into the IM and set the write lock object
    cacheKey.setWriteLockValue(cacheValue);
  }
  cacheKey.setReadTime(query.getExecutionTime());
}

/**
 * Initialize a cache key.  Called by buildObject and now also by
 * buildWorkingCopyCloneFromRow.
 */
protected void copyQueryInfoToCacheKey(CacheKey cacheKey, ObjectBuildingQuery query, AbstractRecord databaseRow, AbstractSession session, ClassDescriptor concreteDescriptor) {
  //CR #4365 - used to prevent infinite recursion on refresh object cascade all
  cacheKey.setLastUpdatedQueryId(query.getQueryId());
  if (concreteDescriptor.usesOptimisticLocking()) {
    OptimisticLockingPolicy policy = concreteDescriptor.getOptimisticLockingPolicy();
    Object cacheValue = policy.getValueToPutInCache(databaseRow, session);
    //register the object into the IM and set the write lock object
    cacheKey.setWriteLockValue(cacheValue);
  }
  cacheKey.setReadTime(query.getExecutionTime());
}

/**
 * Initialize a cache key.  Called by buildObject and now also by
 * buildWorkingCopyCloneFromRow.
 */
protected void copyQueryInfoToCacheKey(CacheKey cacheKey, ObjectBuildingQuery query, AbstractRecord databaseRow, AbstractSession session, ClassDescriptor concreteDescriptor) {
  //CR #4365 - used to prevent infinite recursion on refresh object cascade all
  cacheKey.setLastUpdatedQueryId(query.getQueryId());
  if (concreteDescriptor.usesOptimisticLocking()) {
    OptimisticLockingPolicy policy = concreteDescriptor.getOptimisticLockingPolicy();
    Object cacheValue = policy.getValueToPutInCache(databaseRow, session);
    //register the object into the IM and set the write lock object
    cacheKey.setWriteLockValue(cacheValue);
  }
  cacheKey.setReadTime(query.getExecutionTime());
}

/**
 * Clean up the cached object data and only revert the fetch group data back to the cached object.
 */
private void revertFetchGroupData(Object domainObject, ClassDescriptor concreteDescriptor, CacheKey cacheKey, ObjectBuildingQuery query, JoinedAttributeManager joinManager, AbstractRecord databaseRow, AbstractSession session, boolean targetIsProtected) {
  FetchGroup fetchGroup = query.getExecutionFetchGroup(concreteDescriptor);
  FetchGroupManager fetchGroupManager = concreteDescriptor.getFetchGroupManager();
  //the cached object is either invalidated, or staled as the version is newer, or a refresh is explicitly set on the query.
  //clean all data of the cache object.
  fetchGroupManager.reset(domainObject);
  //set fetch group reference to the cached object
  fetchGroupManager.setObjectFetchGroup(domainObject, fetchGroupManager.getEntityFetchGroup(fetchGroup), session);
  // Bug 276362 - set the CacheKey's read time (to re-validate the CacheKey) before buildAttributesIntoObject is called
  cacheKey.setReadTime(query.getExecutionTime());
  //read in the fetch group data only
  concreteDescriptor.getObjectBuilder().buildAttributesIntoObject(domainObject, cacheKey, databaseRow, query, joinManager, fetchGroup, false, session);
  //set refresh on fetch group
  fetchGroupManager.setRefreshOnFetchGroupToObject(domainObject, (query.shouldRefreshIdentityMapResult() || concreteDescriptor.shouldAlwaysRefreshCache()));
  //set query id to prevent infinite recursion on refresh object cascade all
  cacheKey.setLastUpdatedQueryId(query.getQueryId());
  //register the object into the IM and set the write lock object if applied.
  if (concreteDescriptor.usesOptimisticLocking()) {
    OptimisticLockingPolicy policy = concreteDescriptor.getOptimisticLockingPolicy();
    cacheKey.setWriteLockValue(policy.getValueToPutInCache(databaseRow, session));
  }
}

/**
 * Clean up the cached object data and only revert the fetch group data back to the cached object.
 */
private void revertFetchGroupData(Object domainObject, ClassDescriptor concreteDescriptor, CacheKey cacheKey, ObjectBuildingQuery query, JoinedAttributeManager joinManager, AbstractRecord databaseRow, AbstractSession session, boolean targetIsProtected) {
  FetchGroup fetchGroup = query.getExecutionFetchGroup(concreteDescriptor);
  FetchGroupManager fetchGroupManager = concreteDescriptor.getFetchGroupManager();
  //the cached object is either invalidated, or staled as the version is newer, or a refresh is explicitly set on the query.
  //clean all data of the cache object.
  fetchGroupManager.reset(domainObject);
  //set fetch group reference to the cached object
  fetchGroupManager.setObjectFetchGroup(domainObject, fetchGroupManager.getEntityFetchGroup(fetchGroup), session);
  // Bug 276362 - set the CacheKey's read time (to re-validate the CacheKey) before buildAttributesIntoObject is called
  cacheKey.setReadTime(query.getExecutionTime());
  //read in the fetch group data only
  concreteDescriptor.getObjectBuilder().buildAttributesIntoObject(domainObject, cacheKey, databaseRow, query, joinManager, fetchGroup, false, session);
  //set refresh on fetch group
  fetchGroupManager.setRefreshOnFetchGroupToObject(domainObject, (query.shouldRefreshIdentityMapResult() || concreteDescriptor.shouldAlwaysRefreshCache()));
  //set query id to prevent infinite recursion on refresh object cascade all
  cacheKey.setLastUpdatedQueryId(query.getQueryId());
  //register the object into the IM and set the write lock object if applied.
  if (concreteDescriptor.usesOptimisticLocking()) {
    OptimisticLockingPolicy policy = concreteDescriptor.getOptimisticLockingPolicy();
    cacheKey.setWriteLockValue(policy.getValueToPutInCache(databaseRow, session));
  }
}

/**
 * Clean up the cached object data and only revert the fetch group data back to the cached object.
 */
private void revertFetchGroupData(Object domainObject, ClassDescriptor concreteDescriptor, CacheKey cacheKey, ObjectBuildingQuery query, JoinedAttributeManager joinManager, AbstractRecord databaseRow, AbstractSession session) {
  //the cached object is either invalidated, or staled as the version is newer, or a refresh is explicitly set on the query.
  //clean all data of the cache object.
  concreteDescriptor.getFetchGroupManager().reset(domainObject);
  //set fetch group reference to the cached object
  concreteDescriptor.getFetchGroupManager().setObjectFetchGroup(domainObject, query.getFetchGroup(), session);
  // Bug 276362 - set the CacheKey's read time (to re-validate the CacheKey) before buildAttributesIntoObject is called
  cacheKey.setReadTime(query.getExecutionTime());
  //read in the fetch group data only
  concreteDescriptor.getObjectBuilder().buildAttributesIntoObject(domainObject, databaseRow, query, joinManager, false);
  //set refresh on fetch group
  concreteDescriptor.getFetchGroupManager().setRefreshOnFetchGroupToObject(domainObject, (query.shouldRefreshIdentityMapResult() || concreteDescriptor.shouldAlwaysRefreshCache()));
  //set query id to prevent infinite recursion on refresh object cascade all
  cacheKey.setLastUpdatedQueryId(query.getQueryId());
  //register the object into the IM and set the write lock object if applied.
  if (concreteDescriptor.usesOptimisticLocking()) {
    OptimisticLockingPolicy policy = concreteDescriptor.getOptimisticLockingPolicy();
    cacheKey.setWriteLockValue(policy.getValueToPutInCache(databaseRow, session));
  }
}

if (concreteDescriptor.usesOptimisticLocking()) {
  OptimisticLockingPolicy policy = concreteDescriptor.getOptimisticLockingPolicy();
  Object cacheValue = policy.getValueToPutInCache(databaseRow, session);
  if (concreteDescriptor.getCachePolicy().shouldOnlyRefreshCacheIfNewerVersion()) {
    if (cacheValue == null) {

if (concreteDescriptor.usesOptimisticLocking()) {
  OptimisticLockingPolicy policy = concreteDescriptor.getOptimisticLockingPolicy();
  Object cacheValue = policy.getValueToPutInCache(databaseRow, session);
  if (concreteDescriptor.getCachePolicy().shouldOnlyRefreshCacheIfNewerVersion()) {
    if (cacheValue == null) {

if (concreteDescriptor.usesOptimisticLocking()) {
  OptimisticLockingPolicy policy = concreteDescriptor.getOptimisticLockingPolicy();
  Object cacheValue = policy.getValueToPutInCache(databaseRow, session);
  if (concreteDescriptor.shouldOnlyRefreshCacheIfNewerVersion()) {
    refreshRequired = policy.isNewerVersion(databaseRow, domainObject, primaryKey, session);

Javadoc

INTERNAL: Return the value that should be stored in the identity map. If the value is not stored in the cache, then return a null. #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
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
getWriteLockValue
INTERNAL: This method will return the optimistic lock value for the object #see this method in Versi
initialize
INTERNAL: It is responsible for initializing the policy. #see this method in VersionLockingPolicy

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

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