bundles/org.simantics.diagram/src/org/simantics/diagram/symbolcontribution/IdentifiedObject.java

   1 /*******************************************************************************\r
   2  * Copyright (c) 2007, 2010 Association for Decentralized Information Management\r
   3  * in Industry THTH ry.\r
   4  * All rights reserved. This program and the accompanying materials\r
   5  * are made available under the terms of the Eclipse Public License v1.0\r
   6  * which accompanies this distribution, and is available at\r
   7  * http://www.eclipse.org/legal/epl-v10.html\r
   8  *\r
   9  * Contributors:\r
  10  *     VTT Technical Research Centre of Finland - initial API and implementation\r
  11  *******************************************************************************/\r
  12 package org.simantics.diagram.symbolcontribution;\r
  13 \r
  14 import org.eclipse.core.runtime.IAdaptable;\r
  15 \r
  16 /**\r
  17  * @author Tuukka Lehtonen\r
  18  */\r
  19 public abstract class IdentifiedObject implements IAdaptable, IIdentifiedObject {\r
  20     Object identification;\r
  21 \r
  22     public IdentifiedObject(Object identification) {\r
  23         if (identification == null)\r
  24             throw new NullPointerException("null identification");\r
  25         this.identification = identification;\r
  26     }\r
  27 \r
  28     @Override\r
  29     public Object getId() {\r
  30         return identification;\r
  31     }\r
  32 \r
  33     @Override\r
  34     public int hashCode() {\r
  35         return identification.hashCode();\r
  36     }\r
  37 \r
  38     @Override\r
  39     public boolean equals(Object obj) {\r
  40         if (this == obj)\r
  41             return true;\r
  42         if (obj == null)\r
  43             return false;\r
  44         if (!(obj instanceof IdentifiedObject))\r
  45             return false;\r
  46         IdentifiedObject other = (IdentifiedObject) obj;\r
  47         return identification.equals(other.identification);\r
  48     }\r
  49 \r
  50     @SuppressWarnings("unchecked")\r
  51     protected <T> T adapt(Class<T> clazz) {\r
  52         if (clazz.isInstance(identification))\r
  53             return (T) identification;\r
  54         if (identification instanceof IAdaptable)\r
  55             return (T) ((IAdaptable) identification).getAdapter(clazz);\r
  56         return null;\r
  57     }\r
  58 \r
  59     @SuppressWarnings("rawtypes")\r
  60     @Override\r
  61     public Object getAdapter(Class adapter) {\r
  62         if (adapter.isInstance(identification))\r
  63             return identification;\r
  64         if (identification instanceof IAdaptable)\r
  65             return ((IAdaptable) identification).getAdapter(adapter);\r
  66         return null;\r
  67     }\r
  68 \r
  69     @Override\r
  70     public String toString() {\r
  71         return getClass().getSimpleName() + "[id=" + identification + "]";\r
  72     }\r
  73 \r
  74 }\r