bundles/org.simantics.db.common/src/org/simantics/db/common/request/Tag.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 org.simantics.db.AsyncReadGraph;
  15 import org.simantics.db.Resource;
  16 import org.simantics.db.Statement;
  17 import org.simantics.db.procedure.AsyncProcedure;
  18
  19 final public class Tag extends ResourceAsyncRead2<Resource> {
  20
  21     public Tag(Resource resource, Resource predicate) {
  22         super(resource, predicate);
  23     }
  24
  25     @Override
  26     public void perform(AsyncReadGraph graph, final AsyncProcedure<Resource> procedure) {
  27
  28         graph.forPossibleStatement(resource, resource2, new AsyncProcedure<Statement>() {
  29
  30                         @Override
  31                         public void execute(AsyncReadGraph graph, Statement result) {
  32                                 procedure.execute(graph, result.getPredicate());
  33                         }
  34
  35                         @Override
  36                         public void exception(AsyncReadGraph graph, Throwable t) {
  37                                 procedure.exception(graph, t);
  38                         }
  39
  40         });
  41
  42     }
  43
  44 }