bundles/org.simantics.db.layer0/src/org/simantics/db/layer0/util/SimanticsClipboard.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.util;
  13
  14 import java.util.Collection;
  15 import java.util.Collections;
  16 import java.util.Map;
  17 import java.util.Set;
  18
  19 import org.simantics.db.RequestProcessor;
  20 import org.simantics.db.exception.DatabaseException;
  21 import org.simantics.utils.datastructures.hints.IHintContext.Key;
  22
  23 public interface SimanticsClipboard {
  24
  25         public interface Representation {
  26
  27                 public Key getKey();
  28                 public <T> T getValue(RequestProcessor processor, Map<String,Object> hints) throws DatabaseException;
  29
  30         }
  31
  32         Collection<Set<Representation>> getContents();
  33
  34         public static final SimanticsClipboard EMPTY = new SimanticsClipboard() {
  35                 @Override
  36                 public Collection<Set<Representation>> getContents() {
  37                         return Collections.emptySet();
  38                 }
  39         };
  40
  41 }