org.eclipse.persistence.internal.jpa.metadata.columns.AttributeOverrideMetadata Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of eclipselink Show documentation
Show all versions of eclipselink Show documentation
EclipseLink build based upon Git transaction 774c696
/*******************************************************************************
* 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
* 03/24/2011-2.3 Guy Pelletier
* - 337323: Multi-tenant with shared schema support (part 1)
******************************************************************************/
package org.eclipse.persistence.internal.jpa.metadata.columns;
import org.eclipse.persistence.internal.helper.DatabaseField;
import org.eclipse.persistence.internal.jpa.metadata.MetadataLogger;
import org.eclipse.persistence.internal.jpa.metadata.accessors.MetadataAccessor;
import org.eclipse.persistence.internal.jpa.metadata.accessors.objects.MetadataAccessibleObject;
import org.eclipse.persistence.internal.jpa.metadata.accessors.objects.MetadataAnnotation;
import org.eclipse.persistence.internal.jpa.metadata.xml.XMLEntityMappings;
/**
* INTERNAL:
* Object to hold onto an attribute override meta data.
*
* Key notes:
* - any metadata mapped from XML to this class must be compared in the
* equals method.
* - when loading from annotations, the constructor accepts the metadata
* accessor this metadata was loaded from. Used it to look up any
* 'companion' annotation needed for processing.
* - methods should be preserved in alphabetical order.
*
* @author Guy Pelletier
* @since EclipseLink 1.0
*/
public class AttributeOverrideMetadata extends OverrideMetadata {
private ColumnMetadata m_column;
/**
* INTERNAL:
* Used for XML loading.
*/
public AttributeOverrideMetadata() {
super("");
}
/**
* INTERNAL:
* Used for annotation loading.
*/
public AttributeOverrideMetadata(MetadataAnnotation attributeOverride, MetadataAccessor accessor) {
super(attributeOverride, accessor);
m_column = new ColumnMetadata(attributeOverride.getAttributeAnnotation("column"), accessor);
}
/**
* INTERNAL:
*/
@Override
public boolean equals(Object objectToCompare) {
if (super.equals(objectToCompare) && objectToCompare instanceof AttributeOverrideMetadata) {
return valuesMatch(m_column, ((AttributeOverrideMetadata) objectToCompare).getColumn());
}
return false;
}
/**
* INTERNAL:
* Used for OX mapping.
*/
public ColumnMetadata getColumn() {
return m_column;
}
/**
* INTERNAL:
*/
@Override
public String getIgnoreMappedSuperclassContext() {
return MetadataLogger.IGNORE_MAPPED_SUPERCLASS_ATTRIBUTE_OVERRIDE;
}
/**
* INTERNAL:
* Return the database field for this override.
*/
public DatabaseField getOverrideField() {
return m_column.getDatabaseField();
}
/**
* INTERNAL:
*/
@Override
public void initXMLObject(MetadataAccessibleObject accessibleObject, XMLEntityMappings entityMappings) {
super.initXMLObject(accessibleObject, entityMappings);
// Initialize single objects.
initXMLObject(m_column, accessibleObject);
}
/**
* INTERNAL:
* Used for OX mapping.
*/
public void setColumn(ColumnMetadata column) {
m_column = column;
}
}