1 /*******************************************************************************
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2 * Copyright (c) 2007, 2010 Association for Decentralized Information Management
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3 * in Industry THTH ry.
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4 * All rights reserved. This program and the accompanying materials
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5 * are made available under the terms of the Eclipse Public License v1.0
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6 * which accompanies this distribution, and is available at
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7 * http://www.eclipse.org/legal/epl-v10.html
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10 * VTT Technical Research Centre of Finland - initial API and implementation
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11 *******************************************************************************/
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12 package org.simantics.db.common.request;
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14 import org.simantics.db.ReadGraph;
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15 import org.simantics.db.Resource;
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16 import org.simantics.db.exception.DatabaseException;
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18 abstract public class ResourceRead2<T> extends ResourceReadBase<T> {
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20 final protected Resource resource;
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21 final protected Resource resource2;
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24 public int hashCode() {
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25 return resource.hashCode() + 31 * resource2.hashCode();
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29 public boolean equals(Object object) {
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32 else if (object == null)
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34 else if (getClass() != object.getClass())
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36 ResourceRead2<?> r = (ResourceRead2<?>)object;
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37 return resource.equals(r.resource) && resource2.equals(r.resource2);
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40 public ResourceRead2(Resource resource, Resource resource2) {
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41 if(resource == null) throw new IllegalArgumentException("Null resource.");
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42 if(resource2 == null) throw new IllegalArgumentException("Null resource2.");
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43 this.resource = resource;
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44 this.resource2 = resource2;
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48 public boolean isImmutable(ReadGraph graph) throws DatabaseException {
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49 return graph.isImmutable(resource) && graph.isImmutable(resource2);
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54 public String toString() {
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55 return getClass().getSimpleName() + "|" + resource + "|" + resource2;
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