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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;
/**
* 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
* field/property name.
*/
class ManyToManyRelation {
private final GenTable joinTable;
private final ForeignKey owningForeignKey;
private final GenTable owningTable;
private final ForeignKey nonOwningForeignKey;
private final GenTable nonOwningTable;
private String mappedBy;
ManyToManyRelation(GenTable joinTable, ForeignKey owningForeignKey, GenTable owningTable, ForeignKey nonOwningForeignKey, GenTable nonOwningTable) {
super();
this.joinTable = joinTable;
this.owningForeignKey = owningForeignKey;
this.owningTable = owningTable;
owningTable.addOwnedManyToManyRelation(this);
this.nonOwningForeignKey = nonOwningForeignKey;
this.nonOwningTable = nonOwningTable;
nonOwningTable.addNonOwnedManyToManyRelation(this);
}
GenTable getJoinTable() {
return this.joinTable;
}
ForeignKey getOwningForeignKey() {
return this.owningForeignKey;
}
GenTable getOwningTable() {
return this.owningTable;
}
ForeignKey getNonOwningForeignKey() {
return this.nonOwningForeignKey;
}
GenTable getNonOwningTable() {
return this.nonOwningTable;
}
private GenTable otherTable(GenTable table) {
return (table == this.owningTable) ? this.nonOwningTable : this.owningTable;
}
String javaFieldNameFor(GenTable table) {
// TODO i18n?
return this.otherTable(table).javaFieldName() + "_collection";
}
void clear() {
this.owningTable.removeOwnedManyToManyRelation(this);
this.nonOwningTable.removeNonOwnedManyToManyRelation(this);
}
String getMappedBy() {
return this.mappedBy;
}
void setMappedBy(String mappedBy) {
this.mappedBy = mappedBy;
}
String owningEntityName() {
return this.owningTable.getEntityName();
}
String nonOwningEntityName() {
return this.nonOwningTable.getEntityName();
}
boolean joinTableNameIsDefault() {
return this.joinTable.name().equals(this.getOwningTable().name() + "_" + this.getNonOwningTable().name());
}
boolean joinColumnsIsDefaultFor(String javaFieldName) {
return this.owningForeignKey.isDefaultFor(javaFieldName);
}
boolean inverseJoinColumnsIsDefaultFor(String javaFieldName) {
return this.nonOwningForeignKey.isDefaultFor(javaFieldName);
}
}
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