bundles/org.simantics.databoard/src/org/simantics/databoard/binding/factory/DefaultBindingFactory.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.factory;
  13
  14 import java.util.Map;\r
  15 \r
  16 import org.simantics.databoard.Bindings;\r
  17 import org.simantics.databoard.binding.Binding;\r
  18 import org.simantics.databoard.binding.error.BindingConstructionException;\r
  19 import org.simantics.databoard.binding.impl.BooleanArrayBinding;\r
  20 import org.simantics.databoard.binding.impl.BooleanBindingDefault;\r
  21 import org.simantics.databoard.binding.impl.ByteArrayBinding;\r
  22 import org.simantics.databoard.binding.impl.ByteBindingDefault;\r
  23 import org.simantics.databoard.binding.impl.DefaultMapBinding;\r
  24 import org.simantics.databoard.binding.impl.DoubleArrayBinding;\r
  25 import org.simantics.databoard.binding.impl.DoubleBindingDefault;\r
  26 import org.simantics.databoard.binding.impl.FloatArrayBinding;\r
  27 import org.simantics.databoard.binding.impl.FloatBindingDefault;\r
  28 import org.simantics.databoard.binding.impl.IntArrayBinding;\r
  29 import org.simantics.databoard.binding.impl.IntegerBindingDefault;\r
  30 import org.simantics.databoard.binding.impl.LongArrayBinding;\r
  31 import org.simantics.databoard.binding.impl.LongBindingDefault;\r
  32 import org.simantics.databoard.binding.impl.ObjectArrayBinding;\r
  33 import org.simantics.databoard.binding.impl.StringBindingDefault;\r
  34 import org.simantics.databoard.binding.mutable.ContainerOptionalBinding;\r
  35 import org.simantics.databoard.binding.mutable.UnionTaggedObjectBinding;\r
  36 import org.simantics.databoard.type.ArrayType;\r
  37 import org.simantics.databoard.type.BooleanType;\r
  38 import org.simantics.databoard.type.ByteType;\r
  39 import org.simantics.databoard.type.Datatype;\r
  40 import org.simantics.databoard.type.DoubleType;\r
  41 import org.simantics.databoard.type.FloatType;\r
  42 import org.simantics.databoard.type.IntegerType;\r
  43 import org.simantics.databoard.type.LongType;\r
  44 import org.simantics.databoard.type.MapType;\r
  45 import org.simantics.databoard.type.OptionalType;\r
  46 import org.simantics.databoard.type.RecordType;\r
  47 import org.simantics.databoard.type.StringType;\r
  48 import org.simantics.databoard.type.UnionType;\r
  49
  50 /**
  51  * DefaultBindingScheme is a type to binding mapping that binds any DataType to an Object.\r
  52  * All resulting bindings typicaly immutable java classes.
  53  *
  54  * DataType           | Class of the bound instance
  55  * ===================|==================
  56  * BooleanType        | Boolean.class
  57  * ByteType           | Byte.class
  58  * FloatType          | Float.class
  59  * DoubleType         | Double.class
  60  * IntegerType        | Int.class
  61  * LongType           | Long.class
  62  * StringType         | String.class
  63  * UnionType          | TaggedObject.class
  64  * OptionType         | ValueContainer.class
  65  * RecordType         | Object[].class
  66  * MapType            | TreeMap.class
  67  * VariantType        | Variant.class\r
  68  * ArrayType(Boolean) | boolean[].class\r
  69  * ArrayType(Byte)    | byte[].class\r
  70  * ArrayType(Integer) | int[].class\r
  71  * ArrayType(Long)    | long[].class\r
  72  * ArrayType(Float)   | float[].class\r
  73  * ArrayType(Double)  | double[].class\r
  74  * ArrayType(Byte)    | byte[].class\r
  75  * ArrayType( T )     | Object[].class\r
  76  *
  77  *
  78  * @author Toni Kalajainen <toni.kalajainen@vtt.fi>
  79  */
  80 public class DefaultBindingFactory extends TypeBindingFactory {\r
  81         \r
  82         /**\r
  83          * Construct a binding factory.\r
  84          */\r
  85         public DefaultBindingFactory() {\r
  86                 super();\r
  87         }\r
  88         \r
  89         /**\r
  90          * Construct a scheme factory that appends constructed bindings to the user given\r
  91          * repository  \r
  92          * \r
  93          * @param repository repository where bindings are placed\r
  94          */\r
  95         public DefaultBindingFactory(Map<Datatype, Binding> repository) {\r
  96                 super(repository);\r
  97         }\r
  98 \r
  99         @Override\r
 100         protected Binding doConstruct(Datatype type)\r
 101                         throws BindingConstructionException {\r
 102 \r
 103                 // Exact, non-annotated types\r
 104                 if (type.equals( Bindings.BOOLEAN.type() )) return Bindings.BOOLEAN;\r
 105                 if (type.equals( Bindings.BYTE.type() )) return Bindings.BYTE;\r
 106                 if (type.equals( Bindings.INTEGER.type() )) return Bindings.INTEGER;\r
 107                 if (type.equals( Bindings.LONG.type() )) return Bindings.LONG;\r
 108                 if (type.equals( Bindings.FLOAT.type() )) return Bindings.FLOAT;\r
 109                 if (type.equals( Bindings.DOUBLE.type() )) return Bindings.DOUBLE;\r
 110                 if (type.equals( Bindings.STRING.type() )) return Bindings.STRING;\r
 111                 if (type.equals( Bindings.VARIANT.type() )) return Bindings.VARIANT;\r
 112                 if (type.equals( Bindings.BOOLEAN_ARRAY.type() )) return Bindings.BOOLEAN_ARRAY;\r
 113                 if (type.equals( Bindings.BYTE_ARRAY.type() )) return Bindings.BYTE_ARRAY;\r
 114                 if (type.equals( Bindings.INT_ARRAY.type() )) return Bindings.INT_ARRAY;\r
 115                 if (type.equals( Bindings.LONG_ARRAY.type() )) return Bindings.LONG_ARRAY;\r
 116                 if (type.equals( Bindings.FLOAT_ARRAY.type() )) return Bindings.FLOAT_ARRAY;\r
 117                 if (type.equals( Bindings.DOUBLE_ARRAY.type() )) return Bindings.DOUBLE_ARRAY;\r
 118                 if (type.equals( Bindings.BOOLEAN_ARRAY.type() )) return Bindings.BOOLEAN_ARRAY;\r
 119                 if (type.equals( Bindings.STRING_ARRAY.type() )) return Bindings.STRING_ARRAY;\r
 120                 \r
 121                 // Annotated types \r
 122                 if (type instanceof BooleanType) return new BooleanBindingDefault((BooleanType)type);\r
 123                 if (type instanceof DoubleType) return new DoubleBindingDefault((DoubleType)type);\r
 124                 if (type instanceof FloatType) return new FloatBindingDefault((FloatType)type);\r
 125                 if (type instanceof ByteType) return new ByteBindingDefault((ByteType)type);\r
 126                 if (type instanceof IntegerType) return new IntegerBindingDefault((IntegerType)type);\r
 127                 if (type instanceof LongType) return new LongBindingDefault((LongType)type);\r
 128                 if (type instanceof StringType) return new StringBindingDefault((StringType)type);\r
 129                 \r
 130                 // Constructed types\r
 131                 if (type instanceof ArrayType) {
 132                         ArrayType arrayType = (ArrayType) type;
 133                         Datatype componentType = arrayType.componentType();\r
 134
 135                         if (componentType instanceof BooleanType) return BooleanArrayBinding.createFrom(arrayType);\r
 136                         if (componentType instanceof ByteType) return ByteArrayBinding.createFrom(arrayType);\r
 137                         if (componentType instanceof IntegerType) return IntArrayBinding.createFrom(arrayType);\r
 138                         if (componentType instanceof LongType) return LongArrayBinding.createFrom(arrayType);\r
 139                         if (componentType instanceof FloatType) return FloatArrayBinding.createFrom(arrayType);\r
 140                         if (componentType instanceof DoubleType) return DoubleArrayBinding.createFrom(arrayType);\r
 141 \r
 142                         ObjectArrayBinding binding = new ObjectArrayBinding(arrayType, null);\r
 143                         inprogress.put(type, binding);\r
 144                         binding.componentBinding = construct( componentType );                                          \r
 145                         inprogress.remove(type);\r
 146                         return binding;\r
 147                 }
 148
 149                 if (type instanceof OptionalType) {
 150                         OptionalType optionalType = (OptionalType) type;
 151                         Datatype componentType = optionalType.componentType;
 152                         ContainerOptionalBinding binding = new ContainerOptionalBinding( optionalType, null );
 153                         inprogress.put(type, binding);\r
 154                         binding.componentBinding = construct( componentType );\r
 155                         inprogress.remove(type);\r
 156                         return binding;
 157                 }
 158
 159                 if (type instanceof RecordType) {
 160                         RecordType recordType = (RecordType) type;
 161                         Binding componentBindings[] = new Binding[ recordType.getComponentCount() ];
 162                         RecordObjectArrayBinding binding = new RecordObjectArrayBinding(recordType, componentBindings);
 163                         inprogress.put(type, binding);\r
 164                         for (int i=0; i<componentBindings.length; i++) {\r
 165                                 componentBindings[i] = construct( recordType.getComponentType(i) );\r
 166                         }\r
 167                         inprogress.remove(type);\r
 168                         return binding;
 169                 }
 170
 171                 if (type instanceof UnionType) {
 172                         UnionType unionType = (UnionType) type;
 173                         Binding componentBindings[] = new Binding[ unionType.components.length ];
 174                         UnionTaggedObjectBinding binding = new UnionTaggedObjectBinding(unionType, componentBindings);
 175                         inprogress.put(type, binding);\r
 176                         for (int i=0; i<componentBindings.length; i++) {\r
 177                                 componentBindings[i] = construct( unionType.getComponent(i).type );\r
 178                         }\r
 179                         inprogress.remove(type);\r
 180                         return binding;\r
 181                 }
 182
 183                 if (type instanceof MapType) {
 184                         MapType mapType = (MapType) type;
 185                         DefaultMapBinding binding = new DefaultMapBinding(mapType, null, null);
 186                         inprogress.put(type, binding);\r
 187                         binding.setKeyBinding( construct(mapType.keyType) );\r
 188                         binding.setValueBinding( construct(mapType.valueType) );\r
 189                         inprogress.remove(type);\r
 190                         return binding;\r
 191                 }
 192
 193                 throw new BindingConstructionException("Unexpected, I don't know how to create binding for "+type);
 194         }\r
 195 \r
 196         @Override\r
 197         public boolean supportsType(Datatype type) {\r
 198                 // unexpected\r
 199                 if (failures.containsKey(type)) return false;\r
 200                 return true;\r
 201         }\r
 202
 203 }
 204
 205
 206