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