bundles/org.simantics.databoard/src/org/simantics/databoard/binding/impl/DefaultSetBinding.java

   1 /*******************************************************************************\r
   2  *  Copyright (c) 2010 Association for Decentralized Information Management in\r
   3  *  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.databoard.binding.impl;\r
  13 \r
  14 import java.util.List;\r
  15 import java.util.Map;\r
  16 import java.util.Set;\r
  17 import java.util.TreeSet;\r
  18 \r
  19 import org.simantics.databoard.binding.ArrayBinding;\r
  20 import org.simantics.databoard.binding.Binding;\r
  21 import org.simantics.databoard.binding.MapBinding;\r
  22 import org.simantics.databoard.binding.error.BindingException;\r
  23 import org.simantics.databoard.binding.reflection.VoidBinding;\r
  24 import org.simantics.databoard.type.MapType;\r
  25 import org.simantics.databoard.type.RecordType;\r
  26 \r
  27 /**\r
  28  * Binds java.util.Set to Map(T, {})\r
  29  * \r
  30  * This binding accepts all java.util.Set instances, but instantiates\r
  31  * java.util.TreeSet objects.\r
  32  *\r
  33  * @author Reino Ruusu <reino.ruusu@vtt.fi>\r
  34  */\r
  35 @SuppressWarnings("unchecked")\r
  36 public class DefaultSetBinding extends MapBinding {\r
  37         \r
  38         public DefaultSetBinding(MapType mapType, Binding elementBinding) {\r
  39                 super(mapType, elementBinding, VoidBinding.VOID_BINDING);\r
  40         }\r
  41         \r
  42         public DefaultSetBinding(Binding elementBinding) {\r
  43                 super(new MapType(elementBinding.type(), RecordType.VOID_TYPE), elementBinding, VoidBinding.VOID_BINDING);\r
  44         }\r
  45 \r
  46         @Override\r
  47         public void clear(Object set) throws BindingException {\r
  48                 Set<Object> _set = (Set<Object>) set;\r
  49                 _set.clear();\r
  50         }\r
  51 \r
  52         @Override\r
  53         public boolean containsKey(Object set, Object key) throws BindingException {\r
  54                 Set<Object> _set = (Set<Object>) set;\r
  55                 return _set.contains(key);\r
  56         }\r
  57 \r
  58         @Override\r
  59         public boolean containsValue(Object set, Object value)\r
  60                         throws BindingException {\r
  61                 return false;\r
  62         }\r
  63 \r
  64     @Override\r
  65     public Object create() throws BindingException {\r
  66         return new TreeSet<Object>( keyBinding );\r
  67     }\r
  68 \r
  69         public Object create(Set<?> initialSet) throws BindingException {\r
  70             return initialSet;\r
  71         }\r
  72 \r
  73         @Override\r
  74         public Object create(Map<?, ?> initialMap) throws BindingException {\r
  75                 Set<Object> result = new TreeSet<Object>( keyBinding );\r
  76                 result.addAll(initialMap.keySet());\r
  77                 return result;\r
  78         }\r
  79 \r
  80         @Override\r
  81         public Object create(Object[] keys, Object[] values)\r
  82         throws BindingException {               \r
  83                 Set<Object> result = new TreeSet<Object>( keyBinding );\r
  84                 for (int i=0; i<keys.length; i++) {\r
  85                         result.add( keys[i] );\r
  86                 }\r
  87                 return result;\r
  88         }\r
  89         \r
  90         @Override\r
  91         public Object create(List<Object> keys, List<Object> values) {\r
  92                 Set<Object> result = new TreeSet<Object>( keyBinding );\r
  93                 for (int i=0; i<keys.size(); i++)\r
  94                         result.add(keys.get(i));\r
  95                 return result;\r
  96         }       \r
  97 \r
  98         @Override\r
  99         public Object get(Object set, Object key) throws BindingException {\r
 100                 return null;\r
 101         }\r
 102         \r
 103     @Override\r
 104     public <K, V> void getAll(Object setFrom, Map<K, V> to) throws BindingException {\r
 105                 Map<K, V> _to = (Map<K, V>) to;\r
 106                 Set<K> _setFrom = (Set<K>) setFrom;\r
 107                 for (K k : _setFrom)\r
 108                         _to.put(k, null);\r
 109         }\r
 110 \r
 111         @Override\r
 112         public void getAll(Object setFrom, Object[] keys, Object[] values)\r
 113                         throws BindingException {\r
 114                 Set<Object> _setFrom = (Set<Object>) setFrom;\r
 115                 int i=0;\r
 116                 for (Object k : _setFrom) {\r
 117                         keys[i] = k;\r
 118                         values[i] = null;\r
 119                 }               \r
 120         }\r
 121 \r
 122         @Override\r
 123         public Object[] getKeys(Object set) throws BindingException {\r
 124                 Set<Object> _set = (Set<Object>) set;\r
 125                 return _set.toArray(new Object[_set.size()]);\r
 126         }\r
 127 \r
 128         @Override\r
 129         public void getKeys(Object set, Set<Object> keys) throws BindingException {\r
 130                 Set<Object> s = (Set<Object>) set;\r
 131                 keys.addAll(s);\r
 132         }\r
 133         \r
 134         @Override\r
 135         public Object[] getValues(Object set) throws BindingException {\r
 136                 Set<Object> _set = (Set<Object>) set;\r
 137                 return new Object[_set.size()];\r
 138         }\r
 139         \r
 140         @Override\r
 141         public int count(Object src, Object from, boolean fromInclusive, Object end, boolean endInclusive) throws BindingException {\r
 142             if (src instanceof TreeSet)\r
 143             return new TreeSetBinding(keyBinding).count(src, from, fromInclusive, end, endInclusive);\r
 144             else\r
 145                 return new HashSetBinding(keyBinding).count(src, from, fromInclusive, end, endInclusive);\r
 146         }\r
 147         \r
 148         @Override\r
 149         public int getEntries(Object src, Object from, boolean fromInclusive, Object end, boolean endInclusive, ArrayBinding dstKeyArrayBinding, Object dstKeyArray, ArrayBinding dstValueArrayBinding, Object dstValueArray, int limit) throws BindingException {\r
 150                 return 0;\r
 151         }\r
 152 \r
 153         @Override\r
 154         public void put(Object set, Object key, Object value)\r
 155                         throws BindingException {\r
 156                 Set<Object> _set = (Set<Object>) set;\r
 157                 if (value!=null) throw new BindingException("Cannot put non-null to a Set");\r
 158                 _set.add(key);\r
 159         }\r
 160 \r
 161         public void putAll(Object setTo, Set<?> from) {\r
 162                 Set<Object> _set = (Set<Object>) setTo;\r
 163                 _set.addAll(from);\r
 164         }\r
 165         \r
 166         @Override\r
 167         public <K,V> void putAll(Object setTo, Map<K,V> from) throws BindingException {\r
 168                 Set<Object> _set = (Set<Object>) setTo;\r
 169                 _set.addAll(from.keySet());\r
 170         }\r
 171 \r
 172         @Override\r
 173         public Object remove(Object set, Object key) throws BindingException {\r
 174                 Set<Object> _set = (Set<Object>) set;\r
 175                 _set.remove(key);\r
 176                 return null;\r
 177         }\r
 178 \r
 179         @Override\r
 180         public int size(Object set) throws BindingException {\r
 181                 Set<Object> _set = (Set<Object>) set;\r
 182                 return _set.size();\r
 183         }\r
 184 \r
 185         @Override\r
 186         public boolean isInstance(Object obj) {\r
 187                 return obj instanceof Set;\r
 188         }\r
 189 \r
 190         @Override\r
 191         public Object getCeilingKey(Object set, Object key) {\r
 192         if (set instanceof TreeSet)\r
 193             return new TreeSetBinding(keyBinding).getCeilingKey(set, key);\r
 194         else\r
 195             return new HashSetBinding(keyBinding).getCeilingKey(set, key);\r
 196         }\r
 197 \r
 198         @Override\r
 199         public Object getFirstKey(Object set) {\r
 200         if (set instanceof TreeSet)\r
 201             return new TreeSetBinding(keyBinding).getFirstKey(set);\r
 202         else\r
 203             return new HashSetBinding(keyBinding).getFirstKey(set);\r
 204         }\r
 205 \r
 206         @Override\r
 207         public Object getFloorKey(Object set, Object key) {\r
 208         if (set instanceof TreeSet)\r
 209             return new TreeSetBinding(keyBinding).getFloorKey(set, key);\r
 210         else\r
 211             return new HashSetBinding(keyBinding).getFloorKey(set, key);\r
 212         }\r
 213 \r
 214         @Override\r
 215         public Object getHigherKey(Object set, Object key) {\r
 216         if (set instanceof TreeSet)\r
 217             return new TreeSetBinding(keyBinding).getHigherKey(set, key);\r
 218         else\r
 219             return new HashSetBinding(keyBinding).getHigherKey(set, key);\r
 220         }\r
 221 \r
 222         @Override\r
 223         public Object getLastKey(Object set) {\r
 224         if (set instanceof TreeSet)\r
 225             return new TreeSetBinding(keyBinding).getLastKey(set);\r
 226         else\r
 227             return new HashSetBinding(keyBinding).getLastKey(set);\r
 228         }\r
 229 \r
 230         @Override\r
 231         public Object getLowerKey(Object set, Object key) {\r
 232         if (set instanceof TreeSet)\r
 233             return new TreeSetBinding(keyBinding).getLowerKey(set, key);\r
 234         else\r
 235             return new HashSetBinding(keyBinding).getLowerKey(set, key);\r
 236         }\r
 237 \r
 238 }\r
 239 \r