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* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
****************************************************************/
package org.apache.cayenne.modeler.editor.dbentity;
import java.util.ArrayList;
import javax.swing.JOptionPane;
import org.apache.cayenne.access.DataDomain;
import org.apache.cayenne.map.DbEntity;
import org.apache.cayenne.map.DbRelationship;
import org.apache.cayenne.map.ObjEntity;
import org.apache.cayenne.map.ObjRelationship;
import org.apache.cayenne.map.Relationship;
import org.apache.cayenne.map.event.RelationshipEvent;
import org.apache.cayenne.modeler.Application;
import org.apache.cayenne.modeler.ProjectController;
import org.apache.cayenne.modeler.util.CayenneTableModel;
/**
* Table model for DbRelationship table.
*
*/
public class DbRelationshipTableModel extends CayenneTableModel {
// Columns
static final int NAME = 0;
static final int TARGET = 1;
static final int TO_DEPENDENT_KEY = 2;
static final int CARDINALITY = 3;
protected DbEntity entity;
public DbRelationshipTableModel(DbEntity entity, ProjectController mediator,
Object eventSource) {
super(mediator, eventSource, new ArrayList(entity.getRelationships()));
this.entity = entity;
}
/**
* Returns DbRelationship class.
*/
public Class getElementsClass() {
return DbRelationship.class;
}
public int getColumnCount() {
return 4;
}
public String getColumnName(int col) {
switch (col) {
case NAME:
return "Name";
case TARGET:
return "Target";
case TO_DEPENDENT_KEY:
return "To Dep PK";
case CARDINALITY:
return "To Many";
default:
return null;
}
}
public Class getColumnClass(int col) {
switch (col) {
case TARGET:
return DbEntity.class;
case TO_DEPENDENT_KEY:
case CARDINALITY:
return Boolean.class;
default:
return String.class;
}
}
public DbRelationship getRelationship(int row) {
return (row >= 0 && row < objectList.size()) ? (DbRelationship) objectList
.get(row) : null;
}
public Object getValueAt(int row, int col) {
DbRelationship rel = getRelationship(row);
if (rel == null) {
return null;
}
switch (col) {
case NAME:
return rel.getName();
case TARGET:
return rel.getTargetEntity();
case TO_DEPENDENT_KEY:
return rel.isToDependentPK() ? Boolean.TRUE : Boolean.FALSE;
case CARDINALITY:
return rel.isToMany() ? Boolean.TRUE : Boolean.FALSE;
default:
return null;
}
}
public void setUpdatedValueAt(Object aValue, int row, int column) {
DbRelationship rel = getRelationship(row);
// If name column
if (column == NAME) {
RelationshipEvent e = new RelationshipEvent(eventSource, rel, entity, rel
.getName());
rel.setName((String) aValue);
mediator.fireDbRelationshipEvent(e);
fireTableCellUpdated(row, column);
}
// If target column
else if (column == TARGET) {
DbEntity target = (DbEntity) aValue;
// clear joins...
rel.removeAllJoins();
rel.setTargetEntity(target);
RelationshipEvent e = new RelationshipEvent(eventSource, rel, entity);
mediator.fireDbRelationshipEvent(e);
}
else if (column == TO_DEPENDENT_KEY) {
boolean flag = ((Boolean) aValue).booleanValue();
// make sure reverse relationship "to-dep-pk" is unset.
if (flag) {
DbRelationship reverse = rel.getReverseRelationship();
if (reverse != null && reverse.isToDependentPK()) {
String message = "Unset reverse relationship's \"To Dep PK\" setting?";
int answer = JOptionPane.showConfirmDialog(
Application.getFrame(),
message);
if (answer != JOptionPane.YES_OPTION) {
// no action needed
return;
}
// unset reverse
reverse.setToDependentPK(false);
}
}
rel.setToDependentPK(flag);
RelationshipEvent e = new RelationshipEvent(eventSource, rel, entity);
mediator.fireDbRelationshipEvent(e);
}
else if (column == CARDINALITY) {
Boolean temp = (Boolean) aValue;
rel.setToMany(temp.booleanValue());
RelationshipEvent e = new RelationshipEvent(eventSource, rel, entity);
mediator.fireDbRelationshipEvent(e);
updateDependentObjRelationships(rel);
}
fireTableRowsUpdated(row, row);
}
/**
* Relationship just needs to be removed from the model. It is already removed from
* the DataMap.
*/
void removeRelationship(Relationship rel) {
objectList.remove(rel);
fireTableDataChanged();
}
void updateDependentObjRelationships(DbRelationship relationship) {
DataDomain domain = mediator.getCurrentDataDomain();
if (domain != null) {
for (ObjEntity entity : domain.getEntityResolver().getObjEntities()) {
for (ObjRelationship objRelationship : entity.getRelationships()) {
for (DbRelationship dbRelationship : objRelationship
.getDbRelationships()) {
if (dbRelationship == relationship) {
objRelationship.recalculateToManyValue();
objRelationship.recalculateReadOnlyValue();
break;
}
}
}
}
}
}
public boolean isCellEditable(int row, int col) {
DbRelationship rel = getRelationship(row);
if (rel == null) {
return false;
}
else if (col == TO_DEPENDENT_KEY) {
return rel.isValidForDepPk();
}
return true;
}
}