| /******************************************************************************* |
| * <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: |
| * Stefan Dimov - initial API, implementation and documentation |
| * |
| * </copyright> |
| * |
| *******************************************************************************/ |
| package org.eclipse.jpt.jpadiagrameditor.ui.internal.relations; |
| |
| import java.util.Hashtable; |
| |
| import org.eclipse.jpt.jpa.core.context.java.JavaPersistentAttribute; |
| import org.eclipse.jpt.jpa.core.context.java.JavaPersistentType; |
| |
| abstract public class AbstractRelation implements IRelation { |
| protected final static String SEPARATOR = ";"; //$NON-NLS-1$ |
| protected JavaPersistentType owner; |
| protected JavaPersistentType inverse; |
| protected JavaPersistentAttribute ownerAnnotatedAttribute; |
| protected JavaPersistentAttribute inverseAnnotatedAttribute; |
| |
| protected String ownerAttributeName; |
| protected String inverseAttributeName; |
| |
| |
| public final static Hashtable<RelType, String> relTypeToIdPart = new Hashtable<RelType, String>(); |
| public final static Hashtable<RelDir, String> relDirToIdPart = new Hashtable<RelDir, String>(); |
| |
| static { |
| relTypeToIdPart.put(RelType.ONE_TO_ONE, "1-1"); //$NON-NLS-1$ |
| relTypeToIdPart.put(RelType.ONE_TO_MANY, "1-N"); //$NON-NLS-1$ |
| relTypeToIdPart.put(RelType.MANY_TO_ONE, "N-1"); //$NON-NLS-1$ |
| relTypeToIdPart.put(RelType.MANY_TO_MANY, "N-N"); //$NON-NLS-1$ |
| |
| relDirToIdPart.put(RelDir.UNI, "->"); //$NON-NLS-1$ |
| relDirToIdPart.put(RelDir.BI, "<->"); //$NON-NLS-1$ |
| } |
| |
| public AbstractRelation(JavaPersistentType owner, JavaPersistentType inverse) { |
| this.owner = owner; |
| this.inverse = inverse; |
| } |
| |
| public String getId() { |
| return generateId(owner, inverse, getOwnerAttributeName(), getRelType(), getRelDir()); |
| } |
| |
| public JavaPersistentType getOwner() { |
| return owner; |
| } |
| |
| public JavaPersistentType getInverse() { |
| return inverse; |
| } |
| |
| public JavaPersistentAttribute getInverseAnnotatedAttribute() { |
| return inverseAnnotatedAttribute; |
| } |
| |
| public JavaPersistentAttribute getOwnerAnnotatedAttribute() { |
| return ownerAnnotatedAttribute; |
| } |
| |
| public void setOwnerAnnotatedAttribute( |
| JavaPersistentAttribute ownerAnnotatedAttribute) { |
| this.ownerAnnotatedAttribute = ownerAnnotatedAttribute; |
| } |
| |
| public void setInverseAnnotatedAttribute( |
| JavaPersistentAttribute inverseAnnotatedAttribute) { |
| this.inverseAnnotatedAttribute = inverseAnnotatedAttribute; |
| } |
| |
| public void setOwnerAttributeName(String ownerAttributeName) { |
| this.ownerAttributeName = ownerAttributeName; |
| } |
| |
| public String getOwnerAttributeName() { |
| if (this.ownerAnnotatedAttribute != null) |
| return ownerAnnotatedAttribute.getName(); |
| return ownerAttributeName; |
| } |
| |
| public void setInverseAttributeName(String inverseAttributeName) { |
| this.inverseAttributeName = inverseAttributeName; |
| } |
| |
| public String getInverseAttributeName() { |
| if (this.inverseAnnotatedAttribute != null) |
| return inverseAnnotatedAttribute.getName(); |
| return inverseAttributeName; |
| } |
| |
| public int hashCode() { |
| return getId().hashCode(); |
| } |
| |
| public boolean equals(Object otherRel) { |
| if (!IRelation.class.isInstance(otherRel)) |
| return false; |
| return getId().equals(((IRelation)otherRel).getId()); |
| } |
| |
| public abstract RelType getRelType(); |
| |
| public abstract RelDir getRelDir(); |
| |
| public static String generateId(JavaPersistentType owner, |
| JavaPersistentType inverse, |
| String ownerAttributeName, |
| RelType relType, |
| RelDir relDir) { |
| String id = owner.getName() + "-" + inverse.getName() + SEPARATOR + //$NON-NLS-1$ |
| relTypeToIdPart.get(relType) + SEPARATOR + |
| relDirToIdPart.get(relDir) + SEPARATOR + ownerAttributeName; |
| return id; |
| } |
| |
| } |