]> gerrit.simantics Code Review - simantics/platform.git/blob - bundles/org.simantics.db.layer0/src/org/simantics/db/layer0/request/VariableFactoryRequest.java
Merge "Allow loading databoard serialized files with type adapting" into release...
[simantics/platform.git] / bundles / org.simantics.db.layer0 / src / org / simantics / db / layer0 / request / VariableFactoryRequest.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 java.util.Collection;
15
16 import org.simantics.db.ReadGraph;
17 import org.simantics.db.common.request.BinaryRead;
18 import org.simantics.db.exception.AssumptionException;
19 import org.simantics.db.exception.DatabaseException;
20 import org.simantics.db.layer0.variable.Variable;
21 import org.simantics.db.layer0.variable.VariableFactory;
22
23 public class VariableFactoryRequest extends BinaryRead<Variable, VariableFactory, Collection<Variable>> {
24
25     public VariableFactoryRequest(Variable variable, VariableFactory factory) {
26         super(variable, factory);
27         assert(variable != null);
28         assert(factory != null);
29     }
30
31     @Override
32     public Collection<Variable> perform(ReadGraph graph) throws DatabaseException {
33         Collection<Variable> result = parameter2.evaluate(graph, parameter);
34         if(result == null) throw new AssumptionException("VariableFactory should not return null."); 
35         return result;
36     }
37
38 }