bundles/org.simantics.diagram/src/org/simantics/diagram/symbolcontribution/IdentifiedObject.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.diagram.symbolcontribution;
  13
  14 import org.eclipse.core.runtime.IAdaptable;
  15
  16 /**
  17  * @author Tuukka Lehtonen
  18  */
  19 public abstract class IdentifiedObject implements IAdaptable, IIdentifiedObject {
  20     Object identification;
  21
  22     public IdentifiedObject(Object identification) {
  23         if (identification == null)
  24             throw new NullPointerException("null identification");
  25         this.identification = identification;
  26     }
  27
  28     @Override
  29     public Object getId() {
  30         return identification;
  31     }
  32
  33     @Override
  34     public int hashCode() {
  35         return identification.hashCode();
  36     }
  37
  38     @Override
  39     public boolean equals(Object obj) {
  40         if (this == obj)
  41             return true;
  42         if (obj == null)
  43             return false;
  44         if (!(obj instanceof IdentifiedObject))
  45             return false;
  46         IdentifiedObject other = (IdentifiedObject) obj;
  47         return identification.equals(other.identification);
  48     }
  49
  50     @SuppressWarnings("unchecked")
  51     protected <T> T adapt(Class<T> clazz) {
  52         if (clazz.isInstance(identification))
  53             return (T) identification;
  54         if (identification instanceof IAdaptable)
  55             return (T) ((IAdaptable) identification).getAdapter(clazz);
  56         return null;
  57     }
  58
  59     @SuppressWarnings("rawtypes")
  60     @Override
  61     public Object getAdapter(Class adapter) {
  62         if (adapter.isInstance(identification))
  63             return identification;
  64         if (identification instanceof IAdaptable)
  65             return ((IAdaptable) identification).getAdapter(adapter);
  66         return null;
  67     }
  68
  69     @Override
  70     public String toString() {
  71         return getClass().getSimpleName() + "[id=" + identification + "]";
  72     }
  73
  74 }