bundles/org.simantics.databoard/src/org/simantics/databoard/type/MapType.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.type;
  13
  14 import java.util.Set;
  15
  16 import org.simantics.databoard.accessor.error.ReferenceException;
  17 import org.simantics.databoard.accessor.reference.ChildReference;
  18 import org.simantics.databoard.accessor.reference.IndexReference;
  19 import org.simantics.databoard.accessor.reference.KeyReference;
  20 import org.simantics.databoard.accessor.reference.LabelReference;
  21 import org.simantics.databoard.accessor.reference.NameReference;
  22 import org.simantics.databoard.util.IdentityPair;
  23 import org.simantics.databoard.util.ObjectUtils;
  24
  25 public class MapType extends Datatype {
  26
  27         /** Key to describe if map is to be serialized ordered, the value is boolean value "false"/"true" */
  28         public static final String KEY_ORDERED = "ordered";
  29
  30         public Datatype keyType;
  31         public Datatype valueType;
  32
  33         public MapType() {
  34         }
  35
  36         public MapType(Datatype keyType, Datatype valueType) {
  37                 if (keyType==null || valueType==null)
  38                         throw new IllegalArgumentException("Argument must not be null");
  39                 this.keyType = keyType;
  40                 this.valueType = valueType;
  41         }
  42
  43     @Override
  44     public int getComponentCount() {
  45         return 2;
  46     }
  47
  48     @Override
  49     public Datatype getComponentType(int index) {
  50         if (index==0) return keyType;
  51         if (index==1) return valueType;
  52         throw new IllegalArgumentException();
  53     }
  54
  55     @Override
  56     public Datatype getComponentType(ChildReference path) {
  57         if (path==null) return this;
  58         if (path instanceof IndexReference) {
  59                 IndexReference ir = (IndexReference) path;
  60                 if (ir.index==0) return keyType.getComponentType(path.childReference);
  61                 if (ir.index==1) return valueType.getComponentType(path.childReference);
  62         }
  63         if (path instanceof LabelReference) {
  64                 LabelReference lr = (LabelReference) path;
  65                 if (lr.label.equals("0") || lr.label.equals("key")) return keyType.getComponentType(path.childReference);
  66                 if (lr.label.equals("1") || lr.label.equals("value")) return valueType.getComponentType(path.childReference);
  67         }
  68         if (path instanceof NameReference) {
  69                 NameReference nr = (NameReference) path;
  70                 if (nr.name.equals("key")) return keyType.getComponentType(path.childReference);
  71                 if (nr.name.equals("value")) return valueType.getComponentType(path.childReference);
  72         }
  73         throw new IllegalArgumentException();
  74     }
  75         @Override
  76         public void accept(Visitor1 v, Object obj) {
  77             v.visit(this, obj);
  78         }
  79
  80         @Override
  81         public <T> T accept(Visitor<T> v) {
  82             return v.visit(this);
  83         }
  84
  85         @Override
  86         protected boolean deepEquals(Object obj,
  87                         Set<IdentityPair<Datatype, Datatype>> compareHistory) {
  88                 if (this==obj) return true;
  89                 if ( !hasEqualMetadata(obj) ) return false;
  90                 if (obj instanceof MapType == false) return false;
  91                 MapType other = (MapType) obj;
  92
  93                 return keyType.deepEquals(other.keyType, compareHistory) &&
  94                         valueType.deepEquals(other.valueType, compareHistory);
  95         }
  96
  97         @Override
  98         protected void collectSubtypes(Set<Datatype> subtypes, Set<Datatype> recursiveSubtypes) {
  99                 keyType.collectSubtypes(subtypes, recursiveSubtypes);
 100                 valueType.collectSubtypes(subtypes, recursiveSubtypes);
 101         }
 102
 103         @Override
 104         public int hashCode() {
 105                 if (keyType==this) return 0;
 106                 if (valueType==this) return 0;
 107                 return 0x232ae +
 108                         ObjectUtils.hashCode(keyType) * 13 +
 109                         ObjectUtils.hashCode(valueType) * 17;
 110         }
 111
 112         @SuppressWarnings("unchecked")
 113         @Override
 114         public <T extends Datatype> T getChildType(ChildReference reference) throws ReferenceException {
 115                 if (reference==null) return (T) this;
 116
 117                 if (reference instanceof LabelReference) {
 118 //                      LabelReference lr = (LabelReference) reference;
 119                         return keyType.getChildType(reference.getChildReference());
 120                 } else if (reference instanceof KeyReference) {
 121 //                      KeyReference ref = (KeyReference) reference;
 122                         return keyType.getChildType(reference.getChildReference());
 123                 }
 124                 throw new ReferenceException(reference.getClass().getName()+" is not a reference of a map");
 125         }
 126
 127 }
 128