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.constraint.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.mapping.IContextualModification;
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22 public abstract class CombinedInstruction implements IInstruction {
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23 IInstruction[] instructions;
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25 public CombinedInstruction(IInstruction... instructions) {
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26 this.instructions = instructions;
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29 class CompositeClaim implements IContextualModification {
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31 IContextualModification modification;
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34 public CompositeClaim(IContextualModification modification, int instructionId) {
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35 this.modification = modification;
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36 this.instructionId = instructionId;
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40 public void perform(WriteGraph g, Object[] bindings) throws DatabaseException {
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41 modification.perform(g, bindings);
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42 for(int i=instructionId+1;i<instructions.length;++i)
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43 instructions[i].doClaim(g, bindings);
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49 public IContextualModification claim(ReadGraph g, Object[] bindings) throws DatabaseException {
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50 for(int instructionId=0;instructionId<instructions.length;++instructionId) {
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51 IContextualModification modification = instructions[instructionId].claim(g, bindings);
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52 if(modification != null) {
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53 if(instructionId==instructions.length-1)
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54 return modification;
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56 return new CompositeClaim(modification, instructionId);
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62 class CompositeDeny implements IContextualModification {
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64 IContextualModification modification;
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67 public CompositeDeny(IContextualModification modification, int instructionId) {
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68 this.modification = modification;
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69 this.instructionId = instructionId;
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73 public void perform(WriteGraph g, Object[] bindings) throws DatabaseException {
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74 modification.perform(g, bindings);
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75 for(int i=instructionId+1;i<instructions.length;++i)
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76 instructions[i].doDeny(g, bindings);
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82 public IContextualModification deny(ReadGraph g, Object[] bindings) throws DatabaseException {
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83 for(int instructionId=0;instructionId<instructions.length;++instructionId) {
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84 IContextualModification modification = instructions[instructionId].deny(g, bindings);
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85 if(modification != null) {
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86 if(instructionId==instructions.length-1)
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87 return modification;
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89 return new CompositeDeny(modification, instructionId);
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96 public void doClaim(WriteGraph g, Object[] bindings) throws DatabaseException {
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97 for(int i=0;i<instructions.length;++i)
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98 instructions[i].doClaim(g, bindings);
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102 public void doDeny(WriteGraph g, Object[] bindings) throws DatabaseException {
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103 for(int i=0;i<instructions.length;++i)
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104 instructions[i].doDeny(g, bindings);
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108 public void collectVariables(TIntHashSet reads, TIntHashSet writes) {
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109 for(IInstruction inst : instructions)
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110 inst.collectVariables(reads, writes);
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114 public void mapVariables(TIntIntHashMap map) {
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115 for(IInstruction inst : instructions)
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116 inst.mapVariables(map);
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