bundles/org.simantics.spreadsheet.graph/src/org/simantics/spreadsheet/graph/Lines.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.spreadsheet.graph;
  13
  14 import java.util.ArrayList;
  15 import java.util.Collection;
  16
  17 import org.simantics.db.ReadGraph;
  18 import org.simantics.db.Resource;
  19 import org.simantics.db.common.request.UnaryRead;
  20 import org.simantics.db.exception.DatabaseException;
  21 import org.simantics.db.layer0.variable.Variable;
  22 import org.simantics.spreadsheet.resource.SpreadsheetResource;
  23
  24 public class Lines extends UnaryRead<Variable, Collection<Variable>> {
  25
  26     public Lines(Variable variable) {
  27         super(variable);
  28     }
  29
  30     @Override
  31     public Collection<Variable> perform(ReadGraph graph) throws DatabaseException {
  32         SpreadsheetResource SHEET = SpreadsheetResource.getInstance(graph);
  33         ArrayList<Variable> result = new ArrayList<Variable>();
  34         for(Variable child : parameter.getChildren(graph)) {
  35                 Resource type = child.getPossibleType(graph);
  36                 if(type != null) {
  37                         if(graph.isInheritedFrom(type, SHEET.Line)) {
  38                                 result.add(child);
  39                         } else if(graph.isInheritedFrom(type, SHEET.Lines)) {
  40                                 result.addAll(graph.syncRequest(new Lines(child)));
  41                         }
  42                 }
  43         }
  44         return result;
  45     }
  46
  47 }