How to use

isAttributeValueInstantiatedOrChanged

method

in

org.eclipse.persistence.eis.mappings.EISOneToManyMapping

/**
 * INTERNAL:
 * Compare the changes between two collections. Element comparisons are
 * made using identity and, when appropriate, the value of the element's key
 * for the Map container.
 */
@Override
public ChangeRecord compareForChange(Object clone, Object backup, ObjectChangeSet owner, AbstractSession session) {
  if (isForeignKeyRelationship()) {
    if ((this.getAttributeValueFromObject(clone) != null) && (!this.isAttributeValueInstantiatedOrChanged(clone))) {
      return null;// never instantiated - no changes to report
    }
    return (new EISOneToManyMappingHelper(this)).compareForChange(clone, backup, owner, session);
  } else {
    return super.compareForChange(clone, backup, owner, session);
  }
}

/**
 * INTERNAL:
 * Compare the changes between two collections. Element comparisons are
 * made using identity and, when appropriate, the value of the element's key
 * for the Map container.
 */
@Override
public ChangeRecord compareForChange(Object clone, Object backup, ObjectChangeSet owner, AbstractSession session) {
  if (isForeignKeyRelationship()) {
    if ((this.getAttributeValueFromObject(clone) != null) && (!this.isAttributeValueInstantiatedOrChanged(clone))) {
      return null;// never instantiated - no changes to report
    }
    return (new EISOneToManyMappingHelper(this)).compareForChange(clone, backup, owner, session);
  } else {
    return super.compareForChange(clone, backup, owner, session);
  }
}

/**
 * INTERNAL:
 * Compare the changes between two collections. Element comparisons are
 * made using identity and, when appropriate, the value of the element's key
 * for the Map container.
 */
public ChangeRecord compareForChange(Object clone, Object backup, ObjectChangeSet owner, AbstractSession session) {
  if (isForeignKeyRelationship()) {
    if ((this.getAttributeValueFromObject(clone) != null) && (!this.isAttributeValueInstantiatedOrChanged(clone))) {
      return null;// never instantiated - no changes to report
    }
    return (new EISOneToManyMappingHelper(this)).compareForChange(clone, backup, owner, session);
  } else {
    return super.compareForChange(clone, backup, owner, session);
  }
}

/**
 * INTERNAL:
 * Update the privately owned parts.
 */
@Override
public void preUpdate(WriteObjectQuery query) throws DatabaseException, OptimisticLockException {
  if (!isForeignKeyRelationship()) {
    return;
  }
  if (!shouldObjectModifyCascadeToParts(query)) {
    return;
  }
  // if the target objects are not instantiated, they could not have been changed....
  if (!isAttributeValueInstantiatedOrChanged(query.getObject())) {
    return;
  }
  if (query.getObjectChangeSet() != null) {
    // UnitOfWork
    writeChanges(query.getObjectChangeSet(), query);
  } else {
    // OLD COMMIT
    compareObjectsAndWrite(query);
  }
}

/**
 * INTERNAL:
 * Update the reference objects.
 */
@Override
public void postUpdate(WriteObjectQuery query) throws DatabaseException, OptimisticLockException {
  if (isForeignKeyRelationship()) {
    return;
  }
  if (!shouldObjectModifyCascadeToParts(query)) {
    return;
  }
  // if the target objects are not instantiated, they could not have been changed....
  if (!isAttributeValueInstantiatedOrChanged(query.getObject())) {
    return;
  }
  if (query.getObjectChangeSet() != null) {
    // UnitOfWork
    writeChanges(query.getObjectChangeSet(), query);
  } else {
    // OLD COMMIT
    compareObjectsAndWrite(query);
  }
}

/**
 * INTERNAL:
 * Update the privately owned parts.
 */
@Override
public void preUpdate(WriteObjectQuery query) throws DatabaseException, OptimisticLockException {
  if (!isForeignKeyRelationship()) {
    return;
  }
  if (!shouldObjectModifyCascadeToParts(query)) {
    return;
  }
  // if the target objects are not instantiated, they could not have been changed....
  if (!isAttributeValueInstantiatedOrChanged(query.getObject())) {
    return;
  }
  if (query.getObjectChangeSet() != null) {
    // UnitOfWork
    writeChanges(query.getObjectChangeSet(), query);
  } else {
    // OLD COMMIT    
    compareObjectsAndWrite(query);
  }
}

/**
 * INTERNAL:
 * Update the reference objects.
 */
public void postUpdate(WriteObjectQuery query) throws DatabaseException, OptimisticLockException {
  if (isForeignKeyRelationship()) {
    return;
  }
  if (!this.shouldObjectModifyCascadeToParts(query)) {
    return;
  }
  // if the target objects are not instantiated, they could not have been changed....
  if (!this.isAttributeValueInstantiatedOrChanged(query.getObject())) {
    return;
  }
  // manage objects added and removed from the collection
  Object objectsInMemory = this.getRealCollectionAttributeValueFromObject(query.getObject(), query.getSession());
  Object objectsInDB = this.readPrivateOwnedForObject(query);
  this.compareObjectsAndWrite(objectsInDB, objectsInMemory, query);
}

/**
 * INTERNAL:
 * Update the privately owned parts.
 */
public void preUpdate(WriteObjectQuery query) throws DatabaseException, OptimisticLockException {
  if (!this.isForeignKeyRelationship()) {
    return;
  }
  if (!this.shouldObjectModifyCascadeToParts(query)) {
    return;
  }
  // if the target objects are not instantiated, they could not have been changed....
  if (!this.isAttributeValueInstantiatedOrChanged(query.getObject())) {
    return;
  }
  // manage objects added and removed from the collection
  Object objectsInMemory = this.getRealCollectionAttributeValueFromObject(query.getObject(), query.getSession());
  Object objectsInDB = this.readPrivateOwnedForObject(query);
  this.compareObjectsAndWrite(objectsInDB, objectsInMemory, query);
}

/**
 * INTERNAL:
 * Update the reference objects.
 */
@Override
public void postUpdate(WriteObjectQuery query) throws DatabaseException, OptimisticLockException {
  if (isForeignKeyRelationship()) {
    return;
  }
  if (!shouldObjectModifyCascadeToParts(query)) {
    return;
  }
  // if the target objects are not instantiated, they could not have been changed....
  if (!isAttributeValueInstantiatedOrChanged(query.getObject())) {
    return;
  }
  if (query.getObjectChangeSet() != null) {
    // UnitOfWork
    writeChanges(query.getObjectChangeSet(), query);
  } else {
    // OLD COMMIT    
    compareObjectsAndWrite(query);
  }
}

/**
 * INTERNAL:
 * If any of the references objects has changed, write out
 * all the keys.
 */
@Override
public void writeFromObjectIntoRowForUpdate(WriteObjectQuery writeQuery, AbstractRecord row) throws DescriptorException {
  if (!this.isAttributeValueInstantiatedOrChanged(writeQuery.getObject())) {
    return;
  }
  AbstractSession session = writeQuery.getSession();
  if (session.isUnitOfWork()) {
    // PRS2074 fix for "traditional" Indirection
    Object collection1 = this.getRealCollectionAttributeValueFromObject(writeQuery.getObject(), session);
    Object collection2 = this.getRealCollectionAttributeValueFromObject(writeQuery.getBackupClone(), session);
    if (this.compareObjectsWithoutPrivateOwned(collection1, collection2, session)) {
      return;// nothing has changed - don't put anything in the row
    }
  }
  this.writeFromObjectIntoRow(writeQuery.getObject(), row, session, WriteType.UPDATE);
}

/**
 * INTERNAL:
 * If any of the references objects has changed, write out
 * all the keys.
 */
public void writeFromObjectIntoRowForUpdate(WriteObjectQuery writeQuery, AbstractRecord row) throws DescriptorException {
  if (!this.isAttributeValueInstantiatedOrChanged(writeQuery.getObject())) {
    return;
  }
  AbstractSession session = writeQuery.getSession();
  if (session.isUnitOfWork()) {
    // PRS2074 fix for "traditional" Indirection
    Object collection1 = this.getRealCollectionAttributeValueFromObject(writeQuery.getObject(), session);
    Object collection2 = this.getRealCollectionAttributeValueFromObject(writeQuery.getBackupClone(), session);
    if (this.compareObjectsWithoutPrivateOwned(collection1, collection2, session)) {
      return;// nothing has changed - don't put anything in the row
    }
  }
  this.writeFromObjectIntoRow(writeQuery.getObject(), row, session);
}

/**
 * INTERNAL:
 * If any of the references objects has changed, write out
 * all the keys.
 */
@Override
public void writeFromObjectIntoRowForUpdate(WriteObjectQuery writeQuery, AbstractRecord row) throws DescriptorException {
  if (!this.isAttributeValueInstantiatedOrChanged(writeQuery.getObject())) {
    return;
  }
  AbstractSession session = writeQuery.getSession();
  if (session.isUnitOfWork()) {
    // PRS2074 fix for "traditional" Indirection
    Object collection1 = this.getRealCollectionAttributeValueFromObject(writeQuery.getObject(), session);
    Object collection2 = this.getRealCollectionAttributeValueFromObject(writeQuery.getBackupClone(), session);
    if (this.compareObjectsWithoutPrivateOwned(collection1, collection2, session)) {
      return;// nothing has changed - don't put anything in the row
    }
  }
  this.writeFromObjectIntoRow(writeQuery.getObject(), row, session, WriteType.UPDATE);
}