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 public abstract class ResourceRead<T> extends ResourceReadBase<T> {
20 final protected Resource resource;
23 public int hashCode() {
24 return resource.hashCode() + classHash();
28 public boolean equals(Object object) {
31 else if (object == null)
33 else if (getClass() != object.getClass())
35 ResourceRead<?> r = (ResourceRead<?>) object;
36 return resource.equals(r.resource);
39 protected ResourceRead(Resource resource) {
40 if(resource == null) throw new IllegalArgumentException("Null resource.");
41 this.resource = resource;
45 final public boolean isImmutable(ReadGraph graph) throws DatabaseException {
46 return graph.isImmutable(resource);
50 final public String toString() {
51 return getClass().getSimpleName() + "|" + resource;