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

   1 /*******************************************************************************\r
   2  * Copyright (c) 2007, 2010 Association for Decentralized Information Management\r
   3  * in Industry THTH ry.\r
   4  * All rights reserved. This program and the accompanying materials\r
   5  * are made available under the terms of the Eclipse Public License v1.0\r
   6  * which accompanies this distribution, and is available at\r
   7  * http://www.eclipse.org/legal/epl-v10.html\r
   8  *\r
   9  * Contributors:\r
  10  *     VTT Technical Research Centre of Finland - initial API and implementation\r
  11  *******************************************************************************/\r
  12 package org.simantics.mapping.constraint.instructions;\r
  13 \r
  14 import gnu.trove.map.hash.TIntIntHashMap;\r
  15 import gnu.trove.set.hash.TIntHashSet;\r
  16 \r
  17 import org.simantics.db.ReadGraph;\r
  18 import org.simantics.db.WriteGraph;\r
  19 import org.simantics.db.exception.DatabaseException;\r
  20 import org.simantics.mapping.IContextualModification;\r
  21 \r
  22 public class NotInstruction implements IInstruction {\r
  23         IInstruction instruction;\r
  24 \r
  25         public NotInstruction(IInstruction instruction) {\r
  26                 this.instruction = instruction;\r
  27         }\r
  28 \r
  29         @Override\r
  30         public IContextualModification claim(ReadGraph g, Object[] bindings) throws DatabaseException {\r
  31                 return instruction.deny(g, bindings);\r
  32         }\r
  33 \r
  34         @Override\r
  35         public void collectVariables(TIntHashSet reads, TIntHashSet writes) {\r
  36                 instruction.collectVariables(reads, writes);            \r
  37         }\r
  38 \r
  39         @Override\r
  40         public IContextualModification deny(ReadGraph g, Object[] bindings) throws DatabaseException {\r
  41                 return instruction.claim(g, bindings);\r
  42         }\r
  43 \r
  44         @Override\r
  45         public void doClaim(WriteGraph g, Object[] bindings) throws DatabaseException {\r
  46                 instruction.doDeny(g, bindings);                \r
  47         }\r
  48 \r
  49         @Override\r
  50         public void doDeny(WriteGraph g, Object[] bindings) throws DatabaseException {\r
  51                 instruction.doClaim(g, bindings);               \r
  52         }\r
  53 \r
  54         @Override\r
  55         public void mapVariables(TIntIntHashMap map) {\r
  56                 instruction.mapVariables(map);          \r
  57         }\r
  58 \r
  59         @Override\r
  60         public Object next(ReadGraph g, Object[] bindings, Object continuation) {\r
  61                 return IInstruction.FAILURE;\r
  62         }\r
  63 \r
  64         @Override\r
  65         public Object query(ReadGraph g, Object[] bindings) throws DatabaseException {\r
  66                 if(instruction.query(g, bindings)==IInstruction.FAILURE)\r
  67                         return null;\r
  68                 else\r
  69                         return IInstruction.FAILURE;\r
  70         }\r
  71 \r
  72         @Override\r
  73         public void toString(StringBuilder b, int indent) {\r
  74                 b.append("not ");\r
  75                 instruction.toString(b, indent);                \r
  76         }       \r
  77         \r
  78 }\r