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/*******************************************************************************
* Copyright (c) 2006, 2008 Oracle. All rights reserved.
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v1.0, which accompanies this distribution
* and is available at http://www.eclipse.org/legal/epl-v10.html.
*
* Contributors:
* Oracle - initial API and implementation
******************************************************************************/
package org.eclipse.jpt.gen.internal;
import org.eclipse.jpt.db.ForeignKey;
import org.eclipse.jpt.utility.internal.StringTools;
/**
* This object is shared by the two gen tables that make up the relation.
* Upon construction, 'mappedBy' will be 'null'. The first gen table to be
* used to generate an entity will fill in 'mappedBy' with the appropriate
* attribute (field/property) name.
*/
class ManyToManyRelation {
private final GenTable joinGenTable;
private final ForeignKey owningForeignKey;
private final GenTable owningGenTable;
private final ForeignKey nonOwningForeignKey;
private final GenTable nonOwningGenTable;
private String mappedBy; // set while generating entities
ManyToManyRelation(
GenTable joinGenTable,
ForeignKey owningForeignKey,
GenTable owningGenTable,
ForeignKey nonOwningForeignKey,
GenTable nonOwningGenTable
) {
super();
this.joinGenTable = joinGenTable;
this.owningForeignKey = owningForeignKey;
this.owningGenTable = owningGenTable;
owningGenTable.addOwnedManyToManyRelation(this);
this.nonOwningForeignKey = nonOwningForeignKey;
this.nonOwningGenTable = nonOwningGenTable;
nonOwningGenTable.addNonOwnedManyToManyRelation(this);
}
GenTable getJoinGenTable() {
return this.joinGenTable;
}
ForeignKey getOwningForeignKey() {
return this.owningForeignKey;
}
GenTable getOwningGenTable() {
return this.owningGenTable;
}
ForeignKey getNonOwningForeignKey() {
return this.nonOwningForeignKey;
}
GenTable getNonOwningGenTable() {
return this.nonOwningGenTable;
}
String getOwnedAttributeName() {
return this.nonOwningGenTable.getCollectionAttributeName();
}
String getNonOwnedAttributeName() {
return this.owningGenTable.getCollectionAttributeName();
}
/**
* the scope clears the join table relation if there are any references
* to the join table
*/
void clear() {
this.owningGenTable.removeOwnedManyToManyRelation(this);
this.nonOwningGenTable.removeNonOwnedManyToManyRelation(this);
}
String getMappedBy() {
return this.mappedBy;
}
void setMappedBy(String mappedBy) {
this.mappedBy = mappedBy;
}
String getOwningEntityName() {
return this.owningGenTable.getEntityName();
}
String getNonOwningEntityName() {
return this.nonOwningGenTable.getEntityName();
}
boolean joinTableNameIsDefault() {
return this.joinGenTable.joinTableNameIsDefault();
}
@Override
public String toString() {
return StringTools.buildToStringFor(this, this.joinGenTable);
}
}
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