/*******************************************************************************
* Copyright (c) 1998, 2015 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 file
* 11/06/2009-2.0 Guy Pelletier
* - 286317: UniqueConstraint xml element is changing (plus couple other fixes, see bug)
* 03/24/2011-2.3 Guy Pelletier
* - 337323: Multi-tenant with shared schema support (part 1)
* 11/19/2012-2.5 Guy Pelletier
* - 389090: JPA 2.1 DDL Generation Support (foreign key metadata support)
*******************************************************************************/
package org.eclipse.persistence.internal.jpa.metadata.tables;
import java.util.ArrayList;
import java.util.List;
import org.eclipse.persistence.internal.jpa.metadata.ORMetadata;
import org.eclipse.persistence.internal.jpa.metadata.accessors.MetadataAccessor;
import org.eclipse.persistence.internal.jpa.metadata.accessors.objects.MetadataAnnotation;
/**
* INTERNAL:
* Object to hold onto a unique constraint metadata.
*
* 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.
*
*/
public class UniqueConstraintMetadata extends ORMetadata {
private String m_name;
private List<String> m_columnNames;
/**
* INTERNAL:
* Used for XML loading.
*/
public UniqueConstraintMetadata() {
super("<unique-constraint>");
}
/**
* INTERNAL:
* Used for annotation loading.
*/
public UniqueConstraintMetadata(MetadataAnnotation uniqueConstraint, MetadataAccessor accessor) {
super(uniqueConstraint, accessor);
m_name = uniqueConstraint.getAttributeString("name");
m_columnNames = new ArrayList<String>();
for (Object columnName : uniqueConstraint.getAttributeArray("columnNames")) {
m_columnNames.add((String) columnName);
}
}
/**
* INTERNAL:
*/
@Override
public boolean equals(Object objectToCompare) {
if (objectToCompare instanceof UniqueConstraintMetadata) {
UniqueConstraintMetadata uniqueConstraint = (UniqueConstraintMetadata) objectToCompare;
if (! valuesMatch(m_name, uniqueConstraint.getName())) {
return false;
}
return valuesMatch(m_columnNames, uniqueConstraint.getColumnNames());
}
return false;
}
@Override
public int hashCode() {
int result = m_name != null ? m_name.hashCode() : 0;
result = 31 * result + (m_columnNames != null ? m_columnNames.hashCode() : 0);
return result;
}
/**
* INTERNAL:
* Used for OX mapping.
*/
public List<String> getColumnNames() {
return m_columnNames;
}
/**
* INTERNAL:
* Used for OX mapping.
*/
public String getName() {
return m_name;
}
/**
* INTERNAL:
* Return true if a name has been specified for this unique constraint.
*/
public boolean hasName() {
return m_name != null && !m_name.equals("");
}
/**
* INTERNAL:
* Used for OX mapping.
*/
public void setColumnNames(List<String> columnNames) {
m_columnNames = columnNames;
}
/**
* INTERNAL:
* Used for OX mapping.
*/
public void setName(String name) {
m_name = name;
}
}