/*******************************************************************************
* Copyright (c) 1998, 2013 Oracle and/or its affiliates. All rights reserved.
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v1.0 and Eclipse Distribution License v. 1.0
* which accompanies this distribution.
* The Eclipse Public License is available at http://www.eclipse.org/legal/epl-v10.html
* and the Eclipse Distribution License is available at
* http://www.eclipse.org/org/documents/edl-v10.php.
*
* Contributors:
* Oracle - initial API and implementation from Oracle TopLink
* 05/16/2008-1.0M8 Guy Pelletier
* - 218084: Implement metadata merging functionality between mapping files
* 02/06/2009-2.0 Guy Pelletier
* - 248293: JPA 2.0 Element Collections (part 2)
* 03/27/2009-2.0 Guy Pelletier
* - 241413: JPA 2.0 Add EclipseLink support for Map type attributes
* 04/24/2009-2.0 Guy Pelletier
* - 270011: JPA 2.0 MappedById support
* 11/02/2009-2.0 Michael O'Brien
* - 266912: JPA 2.0 Metamodel support for m:1 as m:m in DI 96
* 04/27/2010-2.1 Guy Pelletier
* - 309856: MappedSuperclasses from XML are not being initialized properly
* 06/14/2010-2.2 Guy Pelletier
* - 264417: Table generation is incorrect for JoinTables in AssociationOverrides
* 03/24/2011-2.3 Guy Pelletier
* - 337323: Multi-tenant with shared schema support (part 1)
******************************************************************************/
package org.eclipse.persistence.internal.jpa.metadata.accessors.mappings;
import org.eclipse.persistence.internal.jpa.metadata.MetadataLogger;
import org.eclipse.persistence.internal.jpa.metadata.accessors.classes.ClassAccessor;
import org.eclipse.persistence.internal.jpa.metadata.accessors.objects.MetadataAnnotatedElement;
import org.eclipse.persistence.internal.jpa.metadata.accessors.objects.MetadataAnnotation;
import org.eclipse.persistence.mappings.ManyToOneMapping;
import org.eclipse.persistence.mappings.ObjectReferenceMapping;
/**
* INTERNAL:
* A many to one relationship accessor.
*
* Key notes:
* - any metadata mapped from XML to this class must be compared in the
* equals method.
* - any metadata mapped from XML to this class must be handled in the merge
* method. (merging is done at the accessor/mapping level)
* - any metadata mapped from XML to this class must be initialized in the
* initXMLObject method.
* - methods should be preserved in alphabetical order.
*
* @author Guy Pelletier
* @since TopLink EJB 3.0 Reference Implementation
*/
public class ManyToOneAccessor extends ObjectAccessor {
/**
* INTERNAL:
*/
public ManyToOneAccessor() {
super("<many-to-one>");
}
/**
* INTERNAL:
*/
public ManyToOneAccessor(MetadataAnnotation manyToOne, MetadataAnnotatedElement annotatedElement, ClassAccessor classAccessor) {
super(manyToOne, annotatedElement, classAccessor);
}
/**
* INTERNAL:
*/
@Override
public boolean equals(Object objectToCompare) {
return super.equals(objectToCompare) && objectToCompare instanceof ManyToOneAccessor;
}
/**
* INTERNAL:
* Return the logging context for this accessor.
*/
protected String getLoggingContext() {
return MetadataLogger.MANY_TO_ONE_MAPPING_REFERENCE_CLASS;
}
/**
* INTERNAL:
*/
@Override
public boolean isManyToOne() {
return true;
}
/**
* INTERNAL:
* A PrivateOwned setting on a ManyToOne is ignored. A log warning is
* issued.
*/
@Override
public boolean isPrivateOwned() {
if (super.isPrivateOwned()) {
getLogger().logWarningMessage(MetadataLogger.IGNORE_PRIVATE_OWNED_ANNOTATION, this);
}
return false;
}
/**
* INTERNAL:
* Process a many to one setting into an EclipseLink OneToOneMapping.
*/
public void process() {
super.process();
// Initialize our mapping now with what we found.
ObjectReferenceMapping mapping = initManyToOneMapping();
if (mapping instanceof ManyToOneMapping) {
// Process the owning keys for this mapping.
processOwningMappingKeys((ManyToOneMapping)mapping);
} else {
processForeignKeyRelationship(mapping);
}
}
}