bundles/org.simantics.mapping/src/org/simantics/mapping/constraint/instructions/NotInstruction.java

   1 /*******************************************************************************
   2  * Copyright (c) 2007, 2010 Association for Decentralized Information Management
   3  * in Industry THTH ry.
   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
   8  *
   9  * Contributors:
  10  *     VTT Technical Research Centre of Finland - initial API and implementation
  11  *******************************************************************************/
  12 package org.simantics.mapping.constraint.instructions;
  13
  14 import gnu.trove.map.hash.TIntIntHashMap;
  15 import gnu.trove.set.hash.TIntHashSet;
  16
  17 import org.simantics.db.ReadGraph;
  18 import org.simantics.db.WriteGraph;
  19 import org.simantics.db.exception.DatabaseException;
  20 import org.simantics.mapping.IContextualModification;
  21
  22 public class NotInstruction implements IInstruction {
  23         IInstruction instruction;
  24
  25         public NotInstruction(IInstruction instruction) {
  26                 this.instruction = instruction;
  27         }
  28
  29         @Override
  30         public IContextualModification claim(ReadGraph g, Object[] bindings) throws DatabaseException {
  31                 return instruction.deny(g, bindings);
  32         }
  33
  34         @Override
  35         public void collectVariables(TIntHashSet reads, TIntHashSet writes) {
  36                 instruction.collectVariables(reads, writes);
  37         }
  38
  39         @Override
  40         public IContextualModification deny(ReadGraph g, Object[] bindings) throws DatabaseException {
  41                 return instruction.claim(g, bindings);
  42         }
  43
  44         @Override
  45         public void doClaim(WriteGraph g, Object[] bindings) throws DatabaseException {
  46                 instruction.doDeny(g, bindings);
  47         }
  48
  49         @Override
  50         public void doDeny(WriteGraph g, Object[] bindings) throws DatabaseException {
  51                 instruction.doClaim(g, bindings);
  52         }
  53
  54         @Override
  55         public void mapVariables(TIntIntHashMap map) {
  56                 instruction.mapVariables(map);
  57         }
  58
  59         @Override
  60         public Object next(ReadGraph g, Object[] bindings, Object continuation) {
  61                 return IInstruction.FAILURE;
  62         }
  63
  64         @Override
  65         public Object query(ReadGraph g, Object[] bindings) throws DatabaseException {
  66                 if(instruction.query(g, bindings)==IInstruction.FAILURE)
  67                         return null;
  68                 else
  69                         return IInstruction.FAILURE;
  70         }
  71
  72         @Override
  73         public void toString(StringBuilder b, int indent) {
  74                 b.append("not ");
  75                 instruction.toString(b, indent);
  76         }
  77
  78 }