bundles/org.simantics.mapping/src/org/simantics/mapping/constraint/instructions/PrintStateInstruction.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.mapping.IContextualModification;
  20
  21 public class PrintStateInstruction implements IInstruction {
  22         String position;
  23
  24         public PrintStateInstruction(String position) {
  25                 this.position = position;
  26         }
  27
  28         private void print(ReadGraph g, Object[] bindings) {
  29                 System.out.print(position + ": ");
  30                 boolean first = true;
  31                 for(Object obj : bindings) {
  32                         if(first)
  33                                 first = false;
  34                         else
  35                                 System.out.print(", ");
  36                         System.out.print(obj);
  37                 }
  38                 System.out.println();
  39         }
  40
  41         @Override
  42         public Object query(ReadGraph g, Object[] bindings) {
  43                 print(g, bindings);
  44                 return null;
  45         }
  46
  47         @Override
  48         public Object next(ReadGraph g, Object[] bindings, Object continuation) {
  49                 return IInstruction.FAILURE;
  50         }
  51
  52         @Override
  53         public IContextualModification claim(ReadGraph g, Object[] bindings) {
  54                 print(g, bindings);
  55                 return null;
  56         }
  57
  58         @Override
  59         public IContextualModification deny(ReadGraph g, Object[] bindings) {
  60                 print(g, bindings);
  61                 return null;
  62         }
  63
  64         @Override
  65         public void doClaim(WriteGraph g, Object[] bindings) {
  66                 print(g, bindings);
  67         }
  68
  69         @Override
  70         public void doDeny(WriteGraph g, Object[] bindings) {
  71                 print(g, bindings);
  72         }
  73
  74         @Override
  75         public void collectVariables(TIntHashSet reads, TIntHashSet writes) {
  76                 /* Because this instruction is for debugging, it doesn't affect
  77                    to the set of read variables. */
  78         }
  79
  80         @Override
  81         public void mapVariables(TIntIntHashMap map) {
  82         }
  83
  84         @Override
  85         public void toString(StringBuilder b, int indent) {
  86
  87         }
  88
  89 }