bundles/org.simantics.databoard/src/org/simantics/databoard/binding/factory/TroveBindingsProvider.java

   1 /*******************************************************************************
   2  * Copyright (c) 2007, 2011 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.binding.factory;
  13
  14 import gnu.trove.map.hash.THashMap;
  15 import gnu.trove.set.hash.THashSet;
  16
  17 import java.util.List;
  18 import java.util.Map;
  19 import java.util.Set;
  20
  21 import org.simantics.databoard.Datatypes;
  22 import org.simantics.databoard.binding.Binding;
  23 import org.simantics.databoard.binding.error.BindingConstructionException;
  24 import org.simantics.databoard.binding.error.BindingException;
  25 import org.simantics.databoard.binding.impl.HashMapBinding;
  26 import org.simantics.databoard.binding.impl.HashSetBinding;
  27 import org.simantics.databoard.binding.reflection.BindingProvider;
  28 import org.simantics.databoard.binding.reflection.BindingRequest;
  29 import org.simantics.databoard.binding.reflection.ClassBindingFactory;
  30 import org.simantics.databoard.type.MapType;
  31
  32 public class TroveBindingsProvider implements BindingProvider {
  33
  34         @Override
  35         public Binding provideBinding(ClassBindingFactory factory, BindingRequest request)
  36                         throws BindingConstructionException {
  37
  38         if ( request.getClazz().equals(THashSet.class) ) {
  39             MapType type = new MapType();
  40             type.valueType = Datatypes.VOID;
  41                 return new THashSetBinding(type, null);
  42         }
  43
  44         if ( request.getClazz().equals(THashMap.class) ) {
  45             MapType type = new MapType();
  46                 return new THashMapBinding(type, null, null);
  47         }
  48
  49                 return null;
  50         }
  51
  52         static class THashMapBinding extends HashMapBinding {
  53
  54                 public THashMapBinding(Binding keyBinding, Binding valueBinding) {
  55                         super(keyBinding, valueBinding);
  56                 }
  57
  58                 public THashMapBinding(MapType mapType, Binding keyBinding,
  59                                 Binding valueBinding) {
  60                         super(mapType, keyBinding, valueBinding);
  61                 }
  62
  63                 @Override
  64                 public Object create() {
  65                         return new THashMap<Object, Object>();
  66                 }
  67
  68                 @Override
  69                 public Object create(Object[] keys, Object[] values) {
  70                         if (keys.length!=values.length)
  71                                 throw new IllegalArgumentException("Equal length arrays expected");
  72
  73                         int len = keys.length;
  74                         THashMap<Object, Object> result = new THashMap<Object, Object>(len);
  75
  76                         for (int i=0; i<len; i++) {
  77                                 Object key = keys[i];
  78                                 Object value = values[i];
  79                                 result.put(key, value);
  80                         }
  81
  82                         return result;
  83                 }
  84
  85                 @Override
  86                 public Object create(List<Object> keys, List<Object> values) {
  87                         if (keys.size()!=values.size())
  88                                 throw new IllegalArgumentException("Equal length arrays expected");
  89
  90                         int len = keys.size();
  91                         THashMap<Object, Object> result = new THashMap<Object, Object>(len);
  92
  93                         for (int i=0; i<len; i++) {
  94                                 Object key = keys.get(i);
  95                                 Object value = values.get(i);
  96                                 result.put(key, value);
  97                         }
  98
  99                         return result;
 100                 }
 101
 102                 @Override
 103                 public Object create(Map<?, ?> initialMap) throws BindingException {
 104                     if (initialMap instanceof THashMap)
 105                         return initialMap;
 106
 107                         // Replace with TreeMap. Create comparator from binding.
 108                         THashMap<Object, Object> result = new THashMap<Object, Object>();
 109                         putAll(result, initialMap);
 110                         return result;
 111                 }
 112
 113                 @Override
 114                 public boolean isInstance(Object obj) {
 115                         return obj instanceof THashMap;
 116                 }
 117
 118         }
 119
 120         static class THashSetBinding extends HashSetBinding {
 121
 122                 public THashSetBinding(Binding elementBinding) {
 123                         super(elementBinding);
 124                         // TODO Auto-generated constructor stub
 125                 }
 126
 127                 public THashSetBinding(MapType mapType, Binding elementBinding) {
 128                         super(mapType, elementBinding);
 129                         // TODO Auto-generated constructor stub
 130                 }
 131
 132                 @Override
 133                 public Object create() throws BindingException {
 134                         return new THashSet<Object>();
 135                 }
 136
 137                 public Object create(Set<?> initialSet) throws BindingException {
 138                     if (initialSet instanceof THashSet)
 139                         return initialSet;
 140
 141                         return new THashSet<Object>(initialSet);
 142                 }
 143
 144                 @SuppressWarnings({ "unchecked", "rawtypes" })
 145         @Override
 146                 public Object create(Map initialMap) throws BindingException {
 147                         return new THashSet<Object>(initialMap.keySet());
 148                 }
 149
 150                 @Override
 151                 public Object create(Object[] keys, Object[] values)
 152                 throws BindingException {
 153                         THashSet<Object> result = new THashSet<Object>(keys.length);
 154                         for (int i=0; i<keys.length; i++)
 155                                 result.add(keys[i]);
 156                         return result;
 157                 }
 158
 159                 @Override
 160                 public Object create(List<Object> keys, List<Object> values) {
 161                         THashSet<Object> result = new THashSet<Object>(keys.size());
 162                         for (int i=0; i<keys.size(); i++)
 163                                 result.add(keys.get(i));
 164                         return result;
 165                 }
 166
 167                 @Override
 168                 public boolean isInstance(Object obj) {
 169                         return obj instanceof THashSet;
 170                 }
 171
 172         }
 173
 174 }