1 /*******************************************************************************
2 * Copyright (c) 2007, 2010 Association for Decentralized Information Management
4 * All rights reserved. This program and the accompanying materials
5 * are made available under the terms of the Eclipse Public License v1.0
6 * which accompanies this distribution, and is available at
7 * http://www.eclipse.org/legal/epl-v10.html
10 * VTT Technical Research Centre of Finland - initial API and implementation
11 *******************************************************************************/
12 package org.simantics.db.common.request;
14 import org.simantics.db.ReadGraph;
15 import org.simantics.db.Resource;
16 import org.simantics.db.exception.DatabaseException;
18 abstract public class ResourceRead3<T> extends ResourceReadBase<T> {
20 final protected Resource resource;
21 final protected Resource resource2;
22 final protected Resource resource3;
25 public int hashCode() {
26 return resource.hashCode() + 51 * (resource2.hashCode() + 31 * resource3.hashCode());
30 public boolean equals(Object object) {
33 else if (object == null)
35 else if (getClass() != object.getClass())
37 ResourceRead3<?> r = (ResourceRead3<?>) object;
38 return resource.equals(r.resource) && resource2.equals(r.resource2) && resource3.equals(r.resource3);
41 public ResourceRead3(Resource r1, Resource r2, Resource r3) {
42 if(r1 == null) throw new IllegalArgumentException("Null resource1.");
43 if(r2 == null) throw new IllegalArgumentException("Null resource2.");
44 if(r3 == null) throw new IllegalArgumentException("Null resource3.");
51 public boolean isImmutable(ReadGraph graph) throws DatabaseException {
52 return graph.isImmutable(resource) && graph.isImmutable(resource2) && graph.isImmutable(resource3);