IBidirectionalMapping


1   /*******************************************************************************
2    * Copyright (c) 2006 IBM Corporation and others.
3    * All rights reserved. This program and the accompanying materials
4    * are made available under the terms of the Eclipse Public License v1.0
5    * which accompanies this distribution, and is available at
6    * http://www.eclipse.org/legal/epl-v10.html
7    *
8    * Contributors:
9    *     IBM Corporation - initial API and implementation
10   ******************************************************************************/
11  
12  package org.eclipse.jface.internal.databinding.provisional.observable.mapping;
13  
14  import java.util.Set  ;
15  
16  import org.eclipse.jface.internal.databinding.provisional.observable.set.IObservableSet;
17  
18  /**
19   * @since 1.0
20   * 
21   */
22  public interface IBidirectionalMapping extends IObservableMapping {
23  
24      /**
25       * Returns the current set of actual results of the function. Callers can
26       * register listeners on this set to respond to changes in the range of the
27       * function.
28       * 
29       * @return the set of possible results of the function.
30       */
31      public IObservableSet getRange();
32  
33      /**
34       * Returns the set of elements in the domain that map onto the given value
35       * from the range. That is, it returns the set of objects that you can pass
36       * to getFunctionValue that will end up returning the given value.
37       * 
38       * @param value
39       *            element from the range
40       * @return collection of all elements in the d
41       */
42      public Set   getDomainElementsForValue(Object   value);
43  
44  }
45

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