bundles/org.simantics.db.layer0/src/org/simantics/db/layer0/adapter/ReflectionComputationalValue.java

   1 /*******************************************************************************
   2  * Copyright (c) 2018 Association for Decentralized Information Management in
   3  * 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  *     Semantum Oy - initial API and implementation
  11  *******************************************************************************/
  12 package org.simantics.db.layer0.adapter;
  13
  14 import org.simantics.db.ComputationalValue;
  15 import org.simantics.db.ReadGraph;
  16 import org.simantics.db.Resource;
  17 import org.simantics.db.exception.DatabaseException;
  18 import org.simantics.scl.reflection.ReflectionUtils;
  19 import org.simantics.scl.reflection.ValueNotFoundException;
  20
  21 /**
  22  * @author Antti Villberg
  23  * @since 1.36.0
  24  */
  25 public class ReflectionComputationalValue implements ComputationalValue {
  26
  27     @SuppressWarnings("unchecked")
  28     @Override
  29     public <T> T getValue(ReadGraph graph, Resource resource) throws DatabaseException {
  30         try {
  31             return (T)ReflectionUtils.getValue(graph.getURI(resource)).getValue();
  32         } catch(ValueNotFoundException e) {
  33             throw new DatabaseException(e);
  34         } catch(ClassCastException e) {
  35             throw new DatabaseException(e);
  36         }
  37     }
  38
  39 }