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/*******************************************************************************
* Copyright (c) 2007 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.core.internal.mappings;
import java.util.Iterator;
import java.util.List;
import org.eclipse.emf.common.util.EList;
import org.eclipse.jpt.core.internal.IAttributeMapping;
import org.eclipse.jpt.core.internal.IPersistentAttribute;
import org.eclipse.jpt.core.internal.ITextRange;
import org.eclipse.jpt.core.internal.ITypeMapping;
import org.eclipse.jpt.db.internal.Table;
/**
* <!-- begin-user-doc -->
* A representation of the model object '<em><b>IJoin Table</b></em>'.
* <!-- end-user-doc -->
*
* <p>
* The following features are supported:
* <ul>
* <li>{@link org.eclipse.jpt.core.internal.mappings.IJoinTable#getJoinColumns <em>Join Columns</em>}</li>
* <li>{@link org.eclipse.jpt.core.internal.mappings.IJoinTable#getSpecifiedJoinColumns <em>Specified Join Columns</em>}</li>
* <li>{@link org.eclipse.jpt.core.internal.mappings.IJoinTable#getDefaultJoinColumns <em>Default Join Columns</em>}</li>
* <li>{@link org.eclipse.jpt.core.internal.mappings.IJoinTable#getInverseJoinColumns <em>Inverse Join Columns</em>}</li>
* <li>{@link org.eclipse.jpt.core.internal.mappings.IJoinTable#getSpecifiedInverseJoinColumns <em>Specified Inverse Join Columns</em>}</li>
* <li>{@link org.eclipse.jpt.core.internal.mappings.IJoinTable#getDefaultInverseJoinColumns <em>Default Inverse Join Columns</em>}</li>
* </ul>
* </p>
*
* @see org.eclipse.jpt.core.internal.mappings.JpaCoreMappingsPackage#getIJoinTable()
* @model kind="class" interface="true" abstract="true"
* @generated
*/
public interface IJoinTable extends ITable
{
/**
* Returns the value of the '<em><b>Join Columns</b></em>' containment reference list.
* The list contents are of type {@link org.eclipse.jpt.core.internal.mappings.IJoinColumn}.
* <!-- begin-user-doc -->
* <p>
* If the meaning of the '<em>Join Columns</em>' containment reference list isn't clear,
* there really should be more of a description here...
* </p>
* <!-- end-user-doc -->
* @return the value of the '<em>Join Columns</em>' containment reference list.
* @see org.eclipse.jpt.core.internal.mappings.JpaCoreMappingsPackage#getIJoinTable_JoinColumns()
* @model type="org.eclipse.jpt.core.internal.mappings.IJoinColumn" containment="true" transient="true" changeable="false" volatile="true"
* @generated
*/
EList<IJoinColumn> getJoinColumns();
/**
* Returns the value of the '<em><b>Specified Join Columns</b></em>' containment reference list.
* The list contents are of type {@link org.eclipse.jpt.core.internal.mappings.IJoinColumn}.
* <!-- begin-user-doc -->
* <p>
* If the meaning of the '<em>Specified Join Columns</em>' containment reference list isn't clear,
* there really should be more of a description here...
* </p>
* <!-- end-user-doc -->
* @return the value of the '<em>Specified Join Columns</em>' containment reference list.
* @see org.eclipse.jpt.core.internal.mappings.JpaCoreMappingsPackage#getIJoinTable_SpecifiedJoinColumns()
* @model type="org.eclipse.jpt.core.internal.mappings.IJoinColumn" containment="true"
* @generated
*/
EList<IJoinColumn> getSpecifiedJoinColumns();
/**
* Returns the value of the '<em><b>Default Join Columns</b></em>' containment reference list.
* The list contents are of type {@link org.eclipse.jpt.core.internal.mappings.IJoinColumn}.
* <!-- begin-user-doc -->
* <p>
* If the meaning of the '<em>Default Join Columns</em>' containment reference list isn't clear,
* there really should be more of a description here...
* </p>
* <!-- end-user-doc -->
* @return the value of the '<em>Default Join Columns</em>' containment reference list.
* @see org.eclipse.jpt.core.internal.mappings.JpaCoreMappingsPackage#getIJoinTable_DefaultJoinColumns()
* @model type="org.eclipse.jpt.core.internal.mappings.IJoinColumn" containment="true"
* @generated
*/
EList<IJoinColumn> getDefaultJoinColumns();
/**
* Returns the value of the '<em><b>Inverse Join Columns</b></em>' containment reference list.
* The list contents are of type {@link org.eclipse.jpt.core.internal.mappings.IJoinColumn}.
* <!-- begin-user-doc -->
* <p>
* If the meaning of the '<em>Inverse Join Columns</em>' containment reference list isn't clear,
* there really should be more of a description here...
* </p>
* <!-- end-user-doc -->
* @return the value of the '<em>Inverse Join Columns</em>' containment reference list.
* @see org.eclipse.jpt.core.internal.mappings.JpaCoreMappingsPackage#getIJoinTable_InverseJoinColumns()
* @model type="org.eclipse.jpt.core.internal.mappings.IJoinColumn" containment="true" transient="true" changeable="false" volatile="true"
* @generated
*/
EList<IJoinColumn> getInverseJoinColumns();
/**
* Returns the value of the '<em><b>Specified Inverse Join Columns</b></em>' containment reference list.
* The list contents are of type {@link org.eclipse.jpt.core.internal.mappings.IJoinColumn}.
* <!-- begin-user-doc -->
* <p>
* If the meaning of the '<em>Specified Inverse Join Columns</em>' containment reference list isn't clear,
* there really should be more of a description here...
* </p>
* <!-- end-user-doc -->
* @return the value of the '<em>Specified Inverse Join Columns</em>' containment reference list.
* @see org.eclipse.jpt.core.internal.mappings.JpaCoreMappingsPackage#getIJoinTable_SpecifiedInverseJoinColumns()
* @model type="org.eclipse.jpt.core.internal.mappings.IJoinColumn" containment="true"
* @generated
*/
EList<IJoinColumn> getSpecifiedInverseJoinColumns();
/**
* Returns the value of the '<em><b>Default Inverse Join Columns</b></em>' containment reference list.
* The list contents are of type {@link org.eclipse.jpt.core.internal.mappings.IJoinColumn}.
* <!-- begin-user-doc -->
* <p>
* If the meaning of the '<em>Default Inverse Join Columns</em>' containment reference list isn't clear,
* there really should be more of a description here...
* </p>
* <!-- end-user-doc -->
* @return the value of the '<em>Default Inverse Join Columns</em>' containment reference list.
* @see org.eclipse.jpt.core.internal.mappings.JpaCoreMappingsPackage#getIJoinTable_DefaultInverseJoinColumns()
* @model type="org.eclipse.jpt.core.internal.mappings.IJoinColumn" containment="true"
* @generated
*/
EList<IJoinColumn> getDefaultInverseJoinColumns();
IJoinColumn createJoinColumn(int index);
IJoinColumn createInverseJoinColumn(int index);
boolean containsSpecifiedJoinColumns();
boolean containsSpecifiedInverseJoinColumns();
IRelationshipMapping relationshipMapping();
/**
* just a little common behavior
*/
abstract class AbstractJoinColumnOwner implements IJoinColumn.Owner
{
private final IJoinTable joinTable;
AbstractJoinColumnOwner(IJoinTable joinTable) {
super();
this.joinTable = joinTable;
}
protected IJoinTable getJoinTable() {
return this.joinTable;
}
public IRelationshipMapping getRelationshipMapping() {
return joinTable.relationshipMapping();
}
/**
* the default table name is always valid and a specified table name
* is prohibited (which will be handled elsewhere)
*/
public boolean tableNameIsInvalid(String tableName) {
return false;
}
/**
* the join column can only be on the join table itself
*/
public boolean tableIsAllowed() {
return false;
}
public ITextRange getTextRange() {
return joinTable.getTextRange();
}
public ITypeMapping getTypeMapping() {
return joinTable.getOwner().getTypeMapping();
}
public Table dbTable(String tableName) {
return (joinTable.getName().equals(tableName)) ? joinTable.dbTable() : null;
}
}
/**
* owner for "forward-pointer" JoinColumns;
* these point at the target/inverse entity
*/
public class InverseJoinColumnOwner extends AbstractJoinColumnOwner
{
public InverseJoinColumnOwner(IJoinTable joinTable) {
super(joinTable);
}
public List<IJoinColumn> joinColumns() {
return getJoinTable().getInverseJoinColumns();
}
public IEntity targetEntity() {
return getJoinTable().relationshipMapping().getResolvedTargetEntity();
}
public String attributeName() {
return getJoinTable().relationshipMapping().getPersistentAttribute().getName();
}
public Table dbTable(String tableName) {
Table dbTable = super.dbTable(tableName);
if (dbTable != null) {
return dbTable;
}
IEntity targetEntity = targetEntity();
return (targetEntity == null) ? null : targetEntity.dbTable(tableName);
}
public Table dbReferencedColumnTable() {
IEntity targetEntity = targetEntity();
return (targetEntity == null) ? null : targetEntity.primaryDbTable();
}
}
/**
* owner for "back-pointer" JoinColumns;
* these point at the source/owning entity
*/
public class JoinColumnOwner extends AbstractJoinColumnOwner
{
public JoinColumnOwner(IJoinTable joinTable) {
super(joinTable);
}
public List<IJoinColumn> joinColumns() {
return getJoinTable().getJoinColumns();
}
public IEntity targetEntity() {
return getJoinTable().relationshipMapping().getEntity();
}
public String attributeName() {
IEntity targetEntity = getJoinTable().relationshipMapping().getResolvedTargetEntity();
if (targetEntity == null) {
return null;
}
String attributeName = getJoinTable().relationshipMapping().getPersistentAttribute().getName();
for (Iterator<IPersistentAttribute> stream = targetEntity.getPersistentType().allAttributes(); stream.hasNext();) {
IPersistentAttribute attribute = stream.next();
IAttributeMapping mapping = attribute.getMapping();
if (mapping instanceof INonOwningMapping) {
String mappedBy = ((INonOwningMapping) mapping).getMappedBy();
if ((mappedBy != null) && mappedBy.equals(attributeName)) {
return attribute.getName();
}
}
}
return null;
}
public Table dbTable(String tableName) {
Table dbTable = super.dbTable(tableName);
if (dbTable != null) {
return dbTable;
}
return getTypeMapping().dbTable(tableName);
}
public Table dbReferencedColumnTable() {
return getTypeMapping().primaryDbTable();
}
}
}
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