bundles/org.simantics.db.layer0/src/org/simantics/db/layer0/request/URIVariable.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.layer0.request;
  13
  14 import org.simantics.db.ReadGraph;
  15 import org.simantics.db.common.request.UnaryRead;
  16 import org.simantics.db.exception.DatabaseException;
  17 import org.simantics.db.layer0.variable.Variable;
  18 import org.simantics.db.layer0.variable.Variables;
  19
  20 public class URIVariable extends UnaryRead<String, Variable> {
  21
  22     public URIVariable(String uri) {
  23         super(uri);
  24         assert(uri != null);
  25     }
  26
  27     @Override
  28     public Variable perform(ReadGraph graph) throws DatabaseException {
  29         return Variables.getVariable(graph, parameter);
  30     }
  31
  32 }