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.mapping.rule.instructions;
14 import gnu.trove.map.hash.TIntIntHashMap;
15 import gnu.trove.set.hash.TIntHashSet;
17 import org.simantics.db.ReadGraph;
18 import org.simantics.db.WriteGraph;
19 import org.simantics.db.exception.DatabaseException;
20 import org.simantics.layer0.utils.triggers.IModification;
21 import org.simantics.mapping.constraint.instructions.IInstruction;
23 public class UnlessRuleInstruction implements IRuleInstruction {
24 IInstruction condition;
25 IRuleInstruction rule;
27 public UnlessRuleInstruction(IInstruction condition, IRuleInstruction rule) {
28 this.condition = condition;
33 public IModification execute(ReadGraph g, Object[] bindings) throws DatabaseException {
35 System.out.println("UnlessRuleInstruction.execute: condition");
36 Object cont = condition.query(g, bindings);
37 if(cont == IInstruction.FAILURE) {
39 System.out.println("UnlessRuleInstruction.execute: execute");
40 return rule.execute(g, bindings);
46 public void doExecute(WriteGraph g, Object[] bindings) throws DatabaseException {
48 System.out.println("UnlessRuleInstruction.doExecute: condition");
49 Object cont = condition.query(g, bindings);
50 if(cont == IInstruction.FAILURE) {
52 System.out.println("UnlessRuleInstruction.doExecute: execute");
53 rule.doExecute(g, bindings);
58 public void collectVariables(TIntHashSet reads, TIntHashSet writes) {
59 condition.collectVariables(reads, writes);
60 rule.collectVariables(reads, writes);
64 public void mapVariables(TIntIntHashMap map) {
65 condition.mapVariables(map);
66 rule.mapVariables(map);
70 public void toString(StringBuilder b, int indent) {
72 condition.toString(b, indent+1);
75 for(int i=0;i<indent;++i)
76 b.append(INDENTATION);
78 rule.toString(b, indent+1);