/*******************************************************************************
* 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
******************************************************************************/
package org.eclipse.persistence.tools.workbench.mappingsplugin.ui.mapping.relational;
import java.util.Iterator;
import org.eclipse.persistence.tools.workbench.framework.context.WorkbenchContextHolder;
import org.eclipse.persistence.tools.workbench.mappingsmodel.db.MWTable;
import org.eclipse.persistence.tools.workbench.mappingsmodel.descriptor.relational.MWRelationalDescriptor;
import org.eclipse.persistence.tools.workbench.mappingsmodel.mapping.relational.MWOneToManyMapping;
import org.eclipse.persistence.tools.workbench.uitools.app.PropertyValueModel;
/**
* this is the panel used to pick (and/or build) the reference from the
* reference descriptor's table(s) back to the mapping's "parent" descriptor
*/
final class OneToManyTableReferencePanel
extends AbstractTableReferencePanel
{
public OneToManyTableReferencePanel(PropertyValueModel subjectHolder, WorkbenchContextHolder contextHolder) {
super(subjectHolder, contextHolder);
}
/**
* the reference source is one of the "reference" descriptor's tables
*/
protected MWTable defaultNewReferenceSourceTable() {
MWRelationalDescriptor descriptor = (MWRelationalDescriptor) this.mapping().getReferenceDescriptor();
if (descriptor == null) {
return null;
}
Iterator candidateTables = descriptor.candidateTables();
return candidateTables.hasNext() ? (MWTable) candidateTables.next() : null;
}
/**
* the reference target is one of the "parent" descriptor's tables
*/
protected MWTable defaultNewReferenceTargetTable() {
Iterator candidateTables = this.mapping().getParentRelationalDescriptor().candidateTables();
return candidateTables.hasNext() ? (MWTable) candidateTables.next() : null;
}
private MWOneToManyMapping mapping() {
return (MWOneToManyMapping) this.subject();
}
}