bundles/org.simantics.databoard/src/org/simantics/databoard/accessor/reference/KeyReference.java

   1 /*******************************************************************************
   2  *  Copyright (c) 2010 Association for Decentralized Information Management in
   3  *  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.databoard.accessor.reference;
  13
  14 import org.simantics.databoard.Bindings;
  15 import org.simantics.databoard.adapter.Adapter;
  16 import org.simantics.databoard.binding.Binding;
  17 import org.simantics.databoard.binding.mutable.Variant;
  18 import org.simantics.databoard.util.URIUtil;
  19
  20 /**
  21  * Map Value
  22  * "<key>/"
  23  */
  24 public class KeyReference extends ChildReference {
  25
  26         static Adapter VARIANT_TO_STRING_ADAPTER = Bindings.getAdapterUnchecked(Bindings.VARIANT, Bindings.STR_VARIANT);
  27
  28         public Variant key;
  29
  30         public KeyReference() {
  31         }
  32
  33         public KeyReference(Binding keyBinding, Object key) {
  34                 this.key = new Variant(keyBinding, key);
  35         }
  36
  37         public KeyReference(Variant key) {
  38                 this.key = key.clone();
  39         }
  40
  41         public KeyReference(Variant key, ChildReference child) {
  42                 super(child);
  43                 this.key = key.clone();
  44         }
  45
  46         @Override
  47         public String toString(boolean labelReference) {
  48                 String strKey = (String) VARIANT_TO_STRING_ADAPTER.adaptUnchecked(key);
  49                 return labelReference ? URIUtil.encodeURI( strKey ) : "k-"+strKey;
  50         }
  51
  52         @Override
  53         public ChildReference clone() {
  54                 return new KeyReference(key.clone(), childReference==null ? null : childReference.clone());
  55         }
  56
  57         @Override
  58         public boolean equals(Object obj) {
  59                 if (obj instanceof KeyReference == false) return false;
  60                 KeyReference other = (KeyReference) obj;
  61                 if (!other.key.equals(key)) return false;
  62                 if (other.hasChildReference() != hasChildReference()) return false;
  63                 if (hasChildReference() && !other.childReference.equals(childReference)) return false;
  64                 return true;
  65         }
  66
  67         @Override
  68         public int hashCode() {
  69                 int hash = 61468996 + 37 * key.hashCode();
  70                 if (hasChildReference()) hash = 31*hash + childReference.hashCode();
  71                 return hash;
  72         }
  73
  74         @Override
  75         public String toString() {
  76                 return "["+key+"]";
  77         }
  78
  79 }
  80