bundles/org.simantics.db.common/src/org/simantics/db/common/request/SuperTypeString.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.db.common.request;
  13
  14 import java.util.Set;
  15
  16 import org.simantics.databoard.Bindings;
  17 import org.simantics.db.ReadGraph;
  18 import org.simantics.db.Resource;
  19 import org.simantics.db.common.utils.Logger;
  20 import org.simantics.db.exception.DatabaseException;
  21 import org.simantics.layer0.Layer0;
  22
  23 public class SuperTypeString extends BinaryRead<Resource, String, String> {
  24
  25     public SuperTypeString(Resource type) {
  26         super(type, " ");
  27     }
  28
  29     public SuperTypeString(Resource type, String separator) {
  30         super(type, separator);
  31         if (separator == null)
  32             throw new NullPointerException("null separator");
  33     }
  34
  35     @Override
  36     public String perform(ReadGraph graph) throws DatabaseException {
  37
  38         Layer0 L0 = Layer0.getInstance(graph);
  39         Set<Resource> supers = graph.getSupertypes(parameter);
  40         final StringBuilder b = new StringBuilder();
  41         String name = graph.getPossibleRelatedValue(parameter, L0.HasName, Bindings.STRING);
  42         if(name != null) {
  43                 b.append(TypeString.escapeToken(name));
  44             for (Resource r : supers) {
  45                 name = graph.getPossibleRelatedValue(r, L0.HasName, Bindings.STRING);
  46                 if(name != null) {
  47                         b.append(parameter2);
  48                         b.append(TypeString.escapeToken(name));
  49                 } else {
  50                         Logger.defaultLogError(new DatabaseException("No name for type " + r));
  51                 }
  52             }
  53         } else {
  54                 Logger.defaultLogError(new DatabaseException("No name for type " + parameter));
  55         }
  56
  57         return b.toString();
  58
  59     }
  60
  61 }