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/*******************************************************************************
* <copyright>
*
* Copyright (c) 2005, 2010 SAP AG.
* 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:
* Kiril Mitov - initial API, implementation and documentation
*
* </copyright>
*
*******************************************************************************/
package org.eclipse.jpt.jpadiagrameditor.ui.internal.feature;
import static org.eclipse.jpt.jpadiagrameditor.ui.internal.relations.IRelation.RelDir.UNI;
import static org.eclipse.jpt.jpadiagrameditor.ui.internal.relations.IRelation.RelType.MANY_TO_MANY;
import static org.eclipse.jpt.jpadiagrameditor.ui.internal.relations.IRelation.RelType.MANY_TO_ONE;
import static org.eclipse.jpt.jpadiagrameditor.ui.internal.relations.IRelation.RelType.ONE_TO_MANY;
import static org.eclipse.jpt.jpadiagrameditor.ui.internal.relations.IRelation.RelType.ONE_TO_ONE;
import java.util.List;
import org.eclipse.emf.transaction.RecordingCommand;
import org.eclipse.emf.transaction.TransactionalEditingDomain;
import org.eclipse.emf.transaction.util.TransactionUtil;
import org.eclipse.graphiti.features.IAddBendpointFeature;
import org.eclipse.graphiti.features.IFeatureProvider;
import org.eclipse.graphiti.features.context.IAddConnectionContext;
import org.eclipse.graphiti.features.context.IAddContext;
import org.eclipse.graphiti.features.context.impl.AddBendpointContext;
import org.eclipse.graphiti.features.impl.AbstractAddFeature;
import org.eclipse.graphiti.mm.pictograms.ConnectionDecorator;
import org.eclipse.graphiti.mm.pictograms.Diagram;
import org.eclipse.graphiti.mm.pictograms.FreeFormConnection;
import org.eclipse.graphiti.mm.pictograms.PictogramElement;
import org.eclipse.graphiti.services.Graphiti;
import org.eclipse.jpt.jpa.core.context.AttributeMapping;
import org.eclipse.jpt.jpa.core.context.ManyToOneMapping;
import org.eclipse.jpt.jpa.core.context.OneToOneMapping;
import org.eclipse.jpt.jpa.core.context.PersistentAttribute;
import org.eclipse.jpt.jpa.core.jpa2.context.DerivedIdentity2_0;
import org.eclipse.jpt.jpa.core.jpa2.context.SingleRelationshipMapping2_0;
import org.eclipse.jpt.jpadiagrameditor.ui.internal.provider.IJPAEditorFeatureProvider;
import org.eclipse.jpt.jpadiagrameditor.ui.internal.provider.IJPAEditorImageCreator;
import org.eclipse.jpt.jpadiagrameditor.ui.internal.provider.JPAEditorImageCreator;
import org.eclipse.jpt.jpadiagrameditor.ui.internal.relations.IRelation;
import org.eclipse.jpt.jpadiagrameditor.ui.internal.relations.IRelation.RelDir;
import org.eclipse.jpt.jpadiagrameditor.ui.internal.relations.IRelation.RelType;
import org.eclipse.jpt.jpadiagrameditor.ui.internal.util.IJPAEditorUtil;
import org.eclipse.jpt.jpadiagrameditor.ui.internal.util.JPAEditorConstants;
import org.eclipse.jpt.jpadiagrameditor.ui.internal.util.JPAEditorUtil;
import org.eclipse.jpt.jpadiagrameditor.ui.internal.util.JPAEditorUtilImpl;
import org.eclipse.jpt.jpadiagrameditor.ui.internal.util.JpaArtifactFactory;
import org.eclipse.jpt.jpadiagrameditor.ui.internal.util.Wrp;
import org.eclipse.swt.graphics.Point;
public class AddRelationFeature extends AbstractAddFeature {
private static final double START_COEFFICIENT = 0.1;
private IJPAEditorImageCreator imageCreator;
private IJPAEditorUtil jpaEditorUtil;
public AddRelationFeature(IFeatureProvider fp) {
this(fp, new JPAEditorImageCreator(), new JPAEditorUtilImpl());
}
public AddRelationFeature(IFeatureProvider fp,
IJPAEditorImageCreator imageCreator,
IJPAEditorUtil jpaEditorUtil) {
super(fp);
this.imageCreator = imageCreator;
this.jpaEditorUtil = jpaEditorUtil;
}
public PictogramElement add(IAddContext context) {
final IAddConnectionContext addConContext = (IAddConnectionContext) context;
final IRelation relation = (IRelation) context.getNewObject();
final Diagram diagram = getDiagram();
final Wrp wrp = new Wrp();
TransactionalEditingDomain ted = TransactionUtil.getEditingDomain(diagram);
RecordingCommand rc = new RecordingCommand(ted) {
@Override
protected void doExecute() {
FreeFormConnection connection = createConnection(addConContext, relation, diagram);
imageCreator.createConnectionLine(diagram, connection);
getFeatureProvider().putKeyToBusinessObject(relation.getId(), relation);
link(connection, relation);
layoutPictogramElement(connection);
wrp.setObj(connection);
}
};
try {
ted.getCommandStack().execute(rc);
} catch (Exception e){
}
return (PictogramElement)wrp.getObj();
}
private FreeFormConnection createConnection(IAddConnectionContext addConContext, IRelation relation,
final Diagram diagram) {
FreeFormConnection connection = getFeatureProvider().getPeServiceUtil().createFreeFormConnection(diagram);
connection.setStart(addConContext.getSourceAnchor());
connection.setEnd(addConContext.getTargetAnchor());
connection.setVisible(true);
connection.setActive(true);
List<Point> points = jpaEditorUtil.createBendPointList(connection, relation.getOwner() == relation.getInverse());
for (int i = 0; i < points.size(); i++) {
Point p = points.get(i);
AddBendpointContext ctx = new AddBendpointContext(connection, p.x, p.y, i);
IAddBendpointFeature ft =getFeatureProvider().getAddBendpointFeature(ctx);
ft.addBendpoint(ctx);
}
addDecorators(connection, relation);
addTextDecorators(connection, relation);
return connection;
}
private void addDecorators(FreeFormConnection connection, IRelation relation) {
RelDir direction = relation.getRelDir();
RelType type = relation.getRelType();
if (ONE_TO_ONE.equals(type)) {
addOneToOneDecorator(connection, direction, relation);
} else if (ONE_TO_MANY.equals(type) && UNI.equals(direction)) {
addOneToManyDecorator(connection, relation);
} else if (MANY_TO_ONE.equals(type)) {
addManyToOneDecorator(connection, direction, relation);
} else if (MANY_TO_MANY.equals(type)) {
addManyToManyDecorator(connection, direction, relation);
}
}
private void addTextDecorators(FreeFormConnection connection, IRelation relation) {
RelDir direction = relation.getRelDir();
RelType type = relation.getRelType();
if (ONE_TO_ONE.equals(type)) {
addOneToOneTextDecorator(connection, direction, relation);
} else if (ONE_TO_MANY.equals(type) && UNI.equals(direction)) {
addOneToManyTextDecorator(connection, relation);
} else if (MANY_TO_ONE.equals(type)) {
addManyToOneTextDecorator(connection, direction, relation);
} else if (MANY_TO_MANY.equals(type)) {
addManyToManyTextDecorator(connection, direction, relation);
}
}
private void addOneToOneDecorator(FreeFormConnection c, RelDir direction, IRelation rel) {
double startCoefficient = START_COEFFICIENT;
double endCoefficient = 1.0 - startCoefficient;
int len = JPAEditorUtil.calcConnectionLength(c);
if (UNI.equals(direction)) {
ConnectionDecorator d = imageCreator.createArrowConnectionDecorator(c, endCoefficient);
Graphiti.getGaService().setLocation(d.getGraphicsAlgorithm(),Math.round(-len/10), 0);
}
}
private void addOneToManyDecorator(FreeFormConnection c, IRelation rel) {
double startCoefficient = START_COEFFICIENT;
double endCoefficient = 1.0 - startCoefficient;
int len = JPAEditorUtil.calcConnectionLength(c);
ConnectionDecorator d = imageCreator.createManyEndWithArrowDecorator(c, endCoefficient);
Graphiti.getGaService().setLocation(d.getGraphicsAlgorithm(),Math.round(-len/10), 0);
}
private void addManyToOneDecorator(FreeFormConnection c, RelDir direction, IRelation rel) {
double startCoefficient = START_COEFFICIENT;
double endCoefficient = 1.0 - startCoefficient;
int len = JPAEditorUtil.calcConnectionLength(c);
ConnectionDecorator d1 = imageCreator.createManyStartDecorator(c, startCoefficient);
Graphiti.getGaService().setLocation(d1.getGraphicsAlgorithm(),Math.round(len/10), 0);
if (UNI.equals(direction)) {
ConnectionDecorator d2 = imageCreator.createArrowConnectionDecorator(c, endCoefficient);
Graphiti.getGaService().setLocation(d2.getGraphicsAlgorithm(),Math.round(-len/10), 0);
}
}
private void addManyToManyDecorator(FreeFormConnection c, RelDir direction, IRelation rel) {
double startCoefficient = START_COEFFICIENT;
double endCoefficient = 1.0 - startCoefficient;
int len = JPAEditorUtil.calcConnectionLength(c);
ConnectionDecorator d1 = imageCreator.createManyStartDecorator(c, startCoefficient);
Graphiti.getGaService().setLocation(d1.getGraphicsAlgorithm(),Math.round(len/10), 0);
if (UNI.equals(direction)) {
ConnectionDecorator d = imageCreator.createManyEndWithArrowDecorator(c, endCoefficient);
Graphiti.getGaService().setLocation(d.getGraphicsAlgorithm(),Math.round(-len/10), 0);
} else {
ConnectionDecorator d = imageCreator.createManyEndDecorator(c, endCoefficient, false);
Graphiti.getGaService().setLocation(d.getGraphicsAlgorithm(),Math.round(-len/10), 0);
}
}
private void addOneToOneTextDecorator(FreeFormConnection c, RelDir direction, IRelation rel) {
boolean isOptional = false;
if (RelDir.BI.equals(direction)) {
PersistentAttribute inverse = rel.getInverse().getAttributeNamed(rel.getInverseAttributeName());
AttributeMapping mapping = JpaArtifactFactory.instance().getAttributeMapping(inverse);
if(mapping instanceof OneToOneMapping){
isOptional = ((OneToOneMapping)mapping).isOptional();
}
imageCreator.createCardinalityConnectionDecorator(getDiagram(), c, isOptional ? JPAEditorConstants.CARDINALITY_ZERO_ONE : JPAEditorConstants.CARDINALITY_ONE, 0.0);
}
PersistentAttribute owner = rel.getOwner().getAttributeNamed(rel.getOwnerAttributeName());
owner.update();
if(isDerivedId(owner)){
isOptional = false;
} else {
AttributeMapping mapping = JpaArtifactFactory.instance().getAttributeMapping(owner);
if(mapping instanceof OneToOneMapping){
isOptional = ((OneToOneMapping)mapping).isOptional();
}
}
imageCreator.createCardinalityConnectionDecorator(getDiagram(), c, isOptional ? JPAEditorConstants.CARDINALITY_ZERO_ONE : JPAEditorConstants.CARDINALITY_ONE, 1.0);
imageCreator.createCardinalityConnectionDecorator(getDiagram(), c, rel.getOwnerAttributeName(), 0.0);
if (!UNI.equals(direction)) {
imageCreator.createCardinalityConnectionDecorator(getDiagram(), c, rel.getInverseAttributeName(), 1.0);
}
}
private boolean isDerivedId(PersistentAttribute attr){
AttributeMapping attributeMapping = JpaArtifactFactory.instance().getAttributeMapping(attr);
if(attributeMapping instanceof SingleRelationshipMapping2_0){
DerivedIdentity2_0 derivedIdentity = ((SingleRelationshipMapping2_0)attributeMapping).getDerivedIdentity();
if(derivedIdentity.usesIdDerivedIdentityStrategy() || derivedIdentity.usesMapsIdDerivedIdentityStrategy()){
return true;
}
}
return false;
}
private void addOneToManyTextDecorator(FreeFormConnection c, IRelation rel) {
imageCreator.createCardinalityConnectionDecorator(getDiagram(), c, JPAEditorConstants.CARDINALITY_ZERO_ONE, 0.0);
imageCreator.createCardinalityConnectionDecorator(getDiagram(), c, JPAEditorConstants.CARDINALITY_ZERO_N, 1.0);
imageCreator.createCardinalityConnectionDecorator(getDiagram(), c, rel.getOwnerAttributeName(), 0.0);
}
private void addManyToOneTextDecorator(FreeFormConnection c, RelDir direction, IRelation rel) {
boolean isOptional = false;
imageCreator.createCardinalityConnectionDecorator(getDiagram(), c, JPAEditorConstants.CARDINALITY_ZERO_N, 0.0);
imageCreator.createCardinalityConnectionDecorator(getDiagram(), c, rel.getOwnerAttributeName(), 0.0);
PersistentAttribute owner = rel.getOwner().getAttributeNamed(rel.getOwnerAttributeName());
if(isDerivedId(owner)){
isOptional = false;
} else {
AttributeMapping mapping = JpaArtifactFactory.instance().getAttributeMapping(owner);
if(mapping instanceof ManyToOneMapping) {
isOptional = ((ManyToOneMapping)mapping).isOptional();
}
}
imageCreator.createCardinalityConnectionDecorator(getDiagram(), c, isOptional ?
JPAEditorConstants.CARDINALITY_ZERO_ONE :
JPAEditorConstants.CARDINALITY_ONE, 1.0);
if (!UNI.equals(direction)) {
imageCreator.createCardinalityConnectionDecorator(getDiagram(), c, rel.getInverseAttributeName(), 1.0);
}
}
private void addManyToManyTextDecorator(FreeFormConnection c, RelDir direction, IRelation rel) {
imageCreator.createCardinalityConnectionDecorator(getDiagram(), c, JPAEditorConstants.CARDINALITY_ZERO_N, 0.0);
imageCreator.createCardinalityConnectionDecorator(getDiagram(), c, JPAEditorConstants.CARDINALITY_ZERO_N, 1.0);
imageCreator.createCardinalityConnectionDecorator(getDiagram(), c, rel.getOwnerAttributeName(), 0.0);
if (!UNI.equals(direction)) {
imageCreator.createCardinalityConnectionDecorator(getDiagram(), c, rel.getInverseAttributeName(), 1.0);
}
}
public boolean canAdd(IAddContext context) {
if (context instanceof IAddConnectionContext && context.getNewObject() instanceof IRelation) {
return true;
}
return false;
}
@Override
public IJPAEditorFeatureProvider getFeatureProvider() {
return (IJPAEditorFeatureProvider)super.getFeatureProvider();
}
}
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