bundles/org.simantics.modeling/src/org/simantics/modeling/actions/DisconnectFlag.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.modeling.actions;
  13
  14 import java.util.Collections;
  15 import java.util.HashSet;
  16 import java.util.List;
  17 import java.util.Set;
  18
  19 import org.simantics.db.Resource;
  20 import org.simantics.db.Session;
  21 import org.simantics.db.WriteGraph;
  22 import org.simantics.db.common.request.WriteRequest;
  23 import org.simantics.db.exception.DatabaseException;
  24 import org.simantics.diagram.flag.FlagUtil;
  25 import org.simantics.layer0.Layer0;
  26 import org.simantics.layer0.utils.operations.Operation;
  27 import org.simantics.utils.datastructures.persistent.IContextMap;
  28 import org.simantics.utils.ui.ErrorLogger;
  29
  30 public class DisconnectFlag extends Operation {
  31
  32     public DisconnectFlag() {
  33         super("Disconnect");
  34     }
  35
  36     @Override
  37     public void exec(Session session, IContextMap parameters) {
  38         final Resource flag = (Resource) parameters.get(SUBJECT);
  39         session.asyncRequest(new WriteRequest() {
  40             @Override
  41             public void perform(WriteGraph g) throws DatabaseException {
  42                 disconnectFlags(g, Collections.singletonList(flag));
  43             }
  44         }, e -> {
  45             if (e != null)
  46                 ErrorLogger.defaultLogError("Flag disconnect failed, see exception for details.", e);
  47         });
  48     }
  49
  50     public static int disconnectFlags(WriteGraph graph, List<Resource> flags) throws DatabaseException {
  51         Layer0 L0 = Layer0.getInstance(graph);
  52         int count = 0;
  53         for (Resource flag : flags) {
  54             Set<Resource> counterParts = FlagUtil.getCounterparts(graph, flag,
  55                     new HashSet<Resource>(Collections.singleton(flag)));
  56             FlagUtil.disconnectFlag(graph, flag);
  57             for (Resource f : counterParts)
  58                 graph.denyValue(f, L0.HasLabel);
  59         }
  60         return count;
  61     }
  62
  63 }