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.primitiverequest;
14 import org.simantics.databoard.binding.Binding;
15 import org.simantics.db.ReadGraph;
16 import org.simantics.db.Resource;
17 import org.simantics.db.common.request.BinaryRead;
18 import org.simantics.db.exception.DatabaseException;
19 import org.simantics.db.request.ReadExt;
20 import org.simantics.db.request.RequestFlags;
22 final public class Value<T> extends BinaryRead<Resource, Binding, T> implements ReadExt {
24 public Value(Resource resource, Binding binding) {
25 super(resource, binding);
29 public T perform(ReadGraph graph) throws DatabaseException {
30 return graph.getValue(parameter, parameter2);
34 public boolean isImmutable(ReadGraph graph) throws DatabaseException {
35 return graph.isImmutable(parameter);
39 public int getType() {
40 return RequestFlags.INVALIDATE;