gerrit.simantics Code Review - simantics/platform.git/blob

   1 package org.simantics.databoard.binding.reflection;
   2
   3 import java.lang.annotation.Annotation;
   4 import java.lang.reflect.Array;
   5 import java.lang.reflect.Constructor;
   6 import java.lang.reflect.Field;
   7 import java.lang.reflect.GenericArrayType;
   8 import java.lang.reflect.InvocationTargetException;
   9 import java.lang.reflect.Modifier;
  10 import java.lang.reflect.ParameterizedType;
  11 import java.lang.reflect.Type;
  12 import java.lang.reflect.TypeVariable;
  13 import java.util.ArrayList;
  14 import java.util.Collection;
  15 import java.util.HashMap;
  16 import java.util.List;
  17 import java.util.Map;
  18 import java.util.Set;
  19 import java.util.concurrent.CopyOnWriteArrayList;
  20
  21 import org.simantics.databoard.Bindings;
  22 import org.simantics.databoard.annotations.ArgumentImpl;
  23 import org.simantics.databoard.annotations.Arguments;
  24 import org.simantics.databoard.annotations.Identifier;
  25 import org.simantics.databoard.annotations.Length;
  26 import org.simantics.databoard.annotations.MIMEType;
  27 import org.simantics.databoard.annotations.Name;
  28 import org.simantics.databoard.annotations.Optional;
  29 import org.simantics.databoard.annotations.Pattern;
  30 import org.simantics.databoard.annotations.Range;
  31 import org.simantics.databoard.annotations.Referable;
  32 import org.simantics.databoard.annotations.Union;
  33 import org.simantics.databoard.annotations.Unit;
  34 import org.simantics.databoard.binding.ArrayBinding;
  35 import org.simantics.databoard.binding.Binding;
  36 import org.simantics.databoard.binding.MapBinding;
  37 import org.simantics.databoard.binding.OptionalBinding;
  38 import org.simantics.databoard.binding.RecordBinding;
  39 import org.simantics.databoard.binding.error.BindingConstructionException;
  40 import org.simantics.databoard.binding.error.RuntimeBindingConstructionException;
  41 import org.simantics.databoard.binding.factory.BindingRepository;
  42 import org.simantics.databoard.binding.factory.DefaultBindingFactory;
  43 import org.simantics.databoard.binding.factory.TypeBindingFactory;
  44 import org.simantics.databoard.binding.impl.ByteBindingDefault;
  45 import org.simantics.databoard.binding.impl.DoubleBindingDefault;
  46 import org.simantics.databoard.binding.impl.FloatBindingDefault;
  47 import org.simantics.databoard.binding.impl.IntegerBindingDefault;
  48 import org.simantics.databoard.binding.impl.LongBindingDefault;
  49 import org.simantics.databoard.binding.impl.OptionalBindingDefault;
  50 import org.simantics.databoard.binding.impl.StringBindingDefault;
  51 import org.simantics.databoard.binding.impl.UnsignedByteBinding;
  52 import org.simantics.databoard.binding.impl.UnsignedIntegerBinding;
  53 import org.simantics.databoard.binding.impl.UnsignedLongBinding;
  54 import org.simantics.databoard.binding.mutable.MutableByteBinding;
  55 import org.simantics.databoard.binding.mutable.MutableDoubleBinding;
  56 import org.simantics.databoard.binding.mutable.MutableFloatBinding;
  57 import org.simantics.databoard.binding.mutable.MutableIntegerBinding;
  58 import org.simantics.databoard.binding.mutable.MutableLongBinding;
  59 import org.simantics.databoard.binding.mutable.MutableStringBinding;
  60 import org.simantics.databoard.primitives.MutableBoolean;
  61 import org.simantics.databoard.primitives.MutableByte;
  62 import org.simantics.databoard.primitives.MutableDouble;
  63 import org.simantics.databoard.primitives.MutableFloat;
  64 import org.simantics.databoard.primitives.MutableInteger;
  65 import org.simantics.databoard.primitives.MutableLong;
  66 import org.simantics.databoard.primitives.MutableString;
  67 import org.simantics.databoard.primitives.UnsignedByte;
  68 import org.simantics.databoard.primitives.UnsignedInteger;
  69 import org.simantics.databoard.primitives.UnsignedLong;
  70 import org.simantics.databoard.type.ArrayType;
  71 import org.simantics.databoard.type.ByteType;
  72 import org.simantics.databoard.type.Component;
  73 import org.simantics.databoard.type.DoubleType;
  74 import org.simantics.databoard.type.FloatType;
  75 import org.simantics.databoard.type.IntegerType;
  76 import org.simantics.databoard.type.LongType;
  77 import org.simantics.databoard.type.MapType;
  78 import org.simantics.databoard.type.OptionalType;
  79 import org.simantics.databoard.type.RecordType;
  80 import org.simantics.databoard.type.StringType;
  81 import org.simantics.databoard.type.UnionType;
  82 import org.simantics.databoard.util.ArrayUtils;
  83 import org.simantics.databoard.util.IdentityHashSet;
  84 import org.simantics.databoard.util.RangeException;
  85
  86 /**
  87  * Type Factory constructs data types from reflection requests.
  88  * Successfully constructed types are placed in the repository that was given
  89  * at construction time.
  90  *
  91  * @author Toni Kalajainen
  92  */
  93 public class ClassBindingFactory {
  94
  95         /**
  96          * Map of failed constructions.
  97          */
  98         Map<BindingRequest, BindingConstructionException> failures = new HashMap<BindingRequest, BindingConstructionException>();
  99
 100         /**
 101          * Map that contains in incomplete constructions.
 102          */
 103         Map<BindingRequest, Binding> inprogress = new HashMap<BindingRequest, Binding>();
 104
 105         /**
 106          * Repository where successful constructions are placed.
 107          */
 108         BindingRepository repository;
 109
 110         List<BindingProvider> subFactories = new CopyOnWriteArrayList<BindingProvider>();
 111
 112         /** Asm based binding factory for Classes, this is used if Asm library is available, else null */
 113         RecordBindingProvider asmClassBindingFactory;
 114
 115         /** Reflection based binding factory for Classes, this has poorer performance than asm factory */
 116         RecordBindingProvider refClassBindingFactory;
 117
 118         /** Factory for creating default bindings for data types. */
 119         TypeBindingFactory defaultBindingFactory;
 120
 121         /**
 122          * Construct a new reflection binding factory
 123          */
 124         public ClassBindingFactory() {
 125                 init();
 126                 this.repository = new BindingRepository();
 127                 this.defaultBindingFactory = new DefaultBindingFactory();
 128         }
 129
 130         /**
 131          * Construct a new reflection binding factory that places constructed
 132          * bindings into user given repository.
 133          *
 134          * @param repository
 135          */
 136         public ClassBindingFactory(BindingRepository repository, TypeBindingFactory defaultBindingFactory) {
 137                 init();
 138                 this.repository = repository;
 139                 this.defaultBindingFactory = defaultBindingFactory;
 140         }
 141
 142         void init() {
 143                 refClassBindingFactory = new ReflectionBindingProvider();
 144                 try {
 145                         // Check ASM Exists
 146                         Class.forName("org.objectweb.asm.ClassWriter");
 147                         // Create factory
 148                         Class<?> y = Class.forName("org.simantics.databoard.binding.reflection.AsmBindingProvider");
 149                         Constructor<?> c = y.getConstructor();
 150                         asmClassBindingFactory = (RecordBindingProvider) c.newInstance();
 151                         return;
 152                 } catch (ClassNotFoundException e) {
 153                 } catch (InstantiationException e) {
 154                 } catch (IllegalAccessException e) {
 155                 } catch (IllegalArgumentException e) {
 156                 } catch (InvocationTargetException e) {
 157                 } catch (SecurityException e) {
 158                 } catch (NoSuchMethodException e) {
 159                 }
 160         }
 161
 162         public void addFactory(BindingProvider factory)
 163         {
 164                 if (!subFactories.contains(factory)) {
 165                         this.subFactories.add(factory);
 166                 }
 167         }
 168
 169         public void removeFactory(BindingProvider factory) {
 170                 subFactories.remove(factory);
 171         }
 172
 173         public BindingRepository getRepository() {
 174                 return repository;
 175         }
 176
 177         /**
 178          * Constructs a binding to comply to class request.
 179          * This is the method sub-classes implement.
 180          * The implementation should use the inprogress -map for construction of
 181          * bindings that have component types.
 182          *
 183          *  e.g.
 184          *   inprogress.put(request, notCompletelyConstructedBinding);
 185          *   Binding componentBinding = construct( componentRequest );
 186          *   notCompletelyConstructedBinding.setChild( componentBinding );
 187          *   inprogress.remove(request);
 188          *
 189          * try-finally is not needed.
 190          *
 191          * @param request
 192          * @return
 193          * @throws BindingConstructionException
 194          * @throws RangeException
 195          */
 196         @SuppressWarnings("unchecked")
 197     protected Binding doConstruct(BindingRequest request) throws BindingConstructionException, RangeException
 198         {
 199                 // Optional
 200         if(request.hasAnnotation(Optional.class))
 201         {
 202                 Optional optional = request.getAnnotation(Optional.class);
 203                 Annotation[] newAnnotations = ArrayUtils.dropElements(request.annotations, optional);
 204                 BindingRequest componentRequest = new BindingRequest(request.getClazz(), newAnnotations);
 205                 OptionalType type = new OptionalType();
 206                 OptionalBinding binding = new OptionalBindingDefault(type, null);
 207                         inprogress.put(request, binding);
 208                         binding.componentBinding = construct( componentRequest );
 209                         type.componentType = binding.componentBinding.type();
 210                         inprogress.remove(request);
 211
 212                         return binding;
 213         }
 214
 215
 216
 217         // Primitive
 218                 {
 219                         Range range = request.getAnnotation(Range.class);
 220                         Unit unit = request.getAnnotation(Unit.class);
 221
 222                         if (request.getClazz() == Integer.class || request.getClazz() == int.class || request.getClazz() == MutableInteger.class || UnsignedInteger.class.isAssignableFrom(request.getClazz())) {
 223                                 Binding binding = null;
 224                                 if (range==null && unit==null) {
 225                                         if (request.getClazz() == int.class) binding = Bindings.INTEGER;
 226                                         if (request.getClazz() == Integer.class) binding = Bindings.INTEGER;
 227                                         if (request.getClazz() == MutableInteger.class) binding = Bindings.MUTABLE_INTEGER;
 228                                         if (request.getClazz() == UnsignedInteger.Mutable.class) binding = Bindings.MUTABLE_UNSIGNED_INTEGER;
 229                                         if (request.getClazz() == UnsignedInteger.Immutable.class) binding = Bindings.UNSIGNED_INTEGER;
 230                                 } else {
 231                                         IntegerType type = new IntegerType();
 232                                         type.setRange( range==null ? null : org.simantics.databoard.util.Range.valueOf(range.value()) );
 233                                         type.setUnit( unit==null ? null : unit.value() );
 234
 235                                         if (request.getClazz() == int.class) binding = new IntegerBindingDefault(type);
 236                                         if (request.getClazz() == Integer.class) binding = new IntegerBindingDefault(type);
 237                                         if (request.getClazz() == MutableInteger.class) binding = new MutableIntegerBinding(type);
 238                                         if (request.getClazz() == UnsignedInteger.Mutable.class) binding = new UnsignedIntegerBinding.Mutable(type);
 239                                         if (request.getClazz() == UnsignedInteger.Immutable.class) binding = new UnsignedIntegerBinding.Immutable(type);
 240                                 }
 241                                 if (binding==null) throw new BindingConstructionException("Cannot bind to "+request.getClazz().getSimpleName());
 242
 243                                 repository.put(request, binding);
 244                                 return binding;
 245                         }
 246
 247                         if (request.getClazz() == Byte.class || request.getClazz() == byte.class || request.getClazz() == MutableByte.class || UnsignedByte.class.isAssignableFrom(request.getClazz())) {
 248                                 Binding binding = null;
 249                                 if (range==null && unit==null) {
 250                                         if (request.getClazz() == byte.class) binding = Bindings.BYTE;
 251                                         if (request.getClazz() == Byte.class) binding = Bindings.BYTE;
 252                                         if (request.getClazz() == MutableByte.class) binding = Bindings.MUTABLE_BYTE;
 253                                         if (request.getClazz() == UnsignedByte.Mutable.class) binding = Bindings.MUTABLE_UNSIGNED_BYTE;
 254                                         if (request.getClazz() == UnsignedByte.Immutable.class) binding = Bindings.UNSIGNED_BYTE;
 255                                 } else {
 256                                         ByteType type = new ByteType();
 257                                         type.setRange( range==null ? null : org.simantics.databoard.util.Range.valueOf(range.value()) );
 258                                         type.setUnit( unit==null ? null : unit.value() );
 259
 260                                         if (request.getClazz() == byte.class) binding = new ByteBindingDefault(type);
 261                                         if (request.getClazz() == Byte.class) binding = new ByteBindingDefault(type);
 262                                         if (request.getClazz() == MutableByte.class) binding = new MutableByteBinding(type);
 263                                         if (request.getClazz() == UnsignedByte.Mutable.class) binding = new UnsignedByteBinding.Mutable(type);
 264                                         if (request.getClazz() == UnsignedByte.Immutable.class) binding = new UnsignedByteBinding.Immutable(type);
 265                                 }
 266                                 if (binding==null) throw new BindingConstructionException("Cannot bind to "+request.getClazz().getSimpleName());
 267
 268                                 repository.put(request, binding);
 269                                 return binding;
 270                         }
 271
 272                         if (request.getClazz() == Long.class || request.getClazz() == long.class || request.getClazz() == MutableLong.class || UnsignedLong.class.isAssignableFrom(request.getClazz())) {
 273                                 Binding binding = null;
 274                                 if (range==null && unit==null) {
 275                                         if (request.getClazz() == long.class) binding = Bindings.LONG;
 276                                         if (request.getClazz() == Long.class) binding = Bindings.LONG;
 277                                         if (request.getClazz() == MutableLong.class) binding = Bindings.MUTABLE_LONG;
 278                                         if (request.getClazz() == UnsignedLong.Mutable.class) binding = Bindings.MUTABLE_UNSIGNED_LONG;
 279                                         if (request.getClazz() == UnsignedLong.Immutable.class) binding = Bindings.UNSIGNED_LONG;
 280                                 } else {
 281                                         LongType type = new LongType();
 282                                         type.setRange( range==null ? null : org.simantics.databoard.util.Range.valueOf(range.value()) );
 283                                         type.setUnit( unit==null ? null : unit.value() );
 284
 285                                         if (request.getClazz() == long.class) binding = new LongBindingDefault(type);
 286                                         if (request.getClazz() == Long.class) binding = new LongBindingDefault(type);
 287                                         if (request.getClazz() == MutableLong.class) binding = new MutableLongBinding(type);
 288                                         if (request.getClazz() == UnsignedLong.Mutable.class) binding = new UnsignedLongBinding.Mutable(type);
 289                                         if (request.getClazz() == UnsignedLong.Immutable.class) binding = new UnsignedLongBinding.Immutable(type);
 290                                 }
 291                                 if (binding==null) throw new BindingConstructionException("Cannot bind to "+request.getClazz().getSimpleName());
 292
 293                                 repository.put(request, binding);
 294                                 return binding;
 295                         }
 296
 297                         if (request.getClazz() == Float.class || request.getClazz() == float.class || request.getClazz() == MutableFloat.class) {
 298                                 Binding binding = null;
 299                                 if (range==null && unit==null) {
 300                                         if (request.getClazz() == float.class) binding = Bindings.FLOAT;
 301                                         if (request.getClazz() == Float.class) binding = Bindings.FLOAT;
 302                                         if (request.getClazz() == MutableFloat.class) binding = Bindings.MUTABLE_FLOAT;
 303                                 } else {
 304                                         FloatType type = new FloatType();
 305                                         type.setRange( range==null ? null : org.simantics.databoard.util.Range.valueOf(range.value()) );
 306                                         type.setUnit( unit==null ? null : unit.value() );
 307
 308                                         if (request.getClazz() == float.class) binding = new FloatBindingDefault(type);
 309                                         if (request.getClazz() == Float.class) binding = new FloatBindingDefault(type);
 310                                         if (request.getClazz() == MutableFloat.class) binding = new MutableFloatBinding(type);
 311                                 }
 312                                 if (binding==null) throw new BindingConstructionException("Cannot bind to "+request.getClazz().getSimpleName());
 313
 314                                 repository.put(request, binding);
 315                                 return binding;
 316                         }
 317
 318                         if (request.getClazz() == Double.class || request.getClazz() == double.class || request.getClazz() == MutableDouble.class) {
 319                                 Binding binding = null;
 320                                 if (range==null && unit==null) {
 321                                         if (request.getClazz() == double.class) binding = Bindings.DOUBLE;
 322                                         if (request.getClazz() == Double.class) binding = Bindings.DOUBLE;
 323                                         if (request.getClazz() == MutableDouble.class) binding = Bindings.MUTABLE_DOUBLE;
 324                                 } else {
 325                                         DoubleType type = new DoubleType();
 326                                         type.setRange( range==null ? null : org.simantics.databoard.util.Range.valueOf(range.value()) );
 327                                         type.setUnit( unit==null ? null : unit.value() );
 328
 329                                         if (request.getClazz() == double.class) binding = new DoubleBindingDefault(type);
 330                                         if (request.getClazz() == Double.class) binding = new DoubleBindingDefault(type);
 331                                         if (request.getClazz() == MutableDouble.class) binding = new MutableDoubleBinding(type);
 332                                 }
 333
 334                                 repository.put(request, binding);
 335                                 return binding;
 336                         }
 337
 338                         if (request.getClazz() == Boolean.class || request.getClazz() == boolean.class || request.getClazz() == MutableBoolean.class) {
 339                                 Binding binding = null;
 340                         if (request.getClazz() == Boolean.class || request.getClazz() == boolean.class) binding = Bindings.BOOLEAN;
 341                         if (request.getClazz() == MutableBoolean.class) binding = Bindings.MUTABLE_BOOLEAN;
 342                                 if (binding==null) throw new BindingConstructionException("Cannot bind to "+request.getClazz().getSimpleName());
 343
 344                                 repository.put(request, binding);
 345                                 return binding;
 346                         }
 347
 348                         if (request.getClazz() == String.class || request.getClazz() == MutableString.class) {
 349                                 Length length = request.getAnnotation(Length.class);
 350                                 MIMEType mimeType = request.getAnnotation(MIMEType.class);
 351                                 Pattern pattern = request.getAnnotation(Pattern.class);
 352                                 Binding binding = null;
 353                                 if (length==null && mimeType==null && pattern==null) {
 354                                         if (request.getClazz() == String.class) binding = Bindings.STRING;
 355                                         if (request.getClazz() == MutableString.class) binding = Bindings.MUTABLE_STRING;
 356                                         } else {
 357                                                 StringType type = new StringType();
 358                                                 type.setLength( length==null ? null : org.simantics.databoard.util.Range.valueOf( length.value()[0] ) );
 359                                                 type.setMimeType( mimeType==null ? null : mimeType.value() );
 360                                                 type.setPattern( pattern==null ? null : pattern.value() );
 361                                         if (request.getClazz() == String.class) binding = new StringBindingDefault(type);
 362                                         if (request.getClazz() == MutableString.class) binding = new MutableStringBinding(type);
 363                                         }
 364                                 if (binding==null) throw new BindingConstructionException("Cannot bind to "+request.getClazz().getSimpleName());
 365
 366                     repository.put(request, binding);
 367                                 return binding;
 368                         }
 369                 }
 370
 371
 372         // Custom factories
 373         for (BindingProvider factory : subFactories) {
 374                 Binding result = factory.provideBinding(this, request);
 375                 if (result == null) continue;
 376
 377                 /// Array
 378                 // If the result was an arraybinding, complete the composite binding
 379                 if (result instanceof ArrayBinding) {
 380                         ArrayBinding binding = (ArrayBinding) result;
 381                         ArrayType type = binding.type();
 382                 Length lengthAnnotation = request.getAnnotation(Length.class);
 383                 Arguments argumentsAnnotation = request.getAnnotation(Arguments.class);
 384                 Annotation[] componentAnnotations = request.dropAnnotations(1, lengthAnnotation);
 385                 Class<?> componentClass = argumentsAnnotation!=null ? argumentsAnnotation.value()[0] : request.getClazz().getComponentType();
 386
 387                 org.simantics.databoard.util.Range[] lengths = null;
 388                 if (lengthAnnotation!=null) {
 389                         String[] strs = lengthAnnotation.value();
 390                         lengths = new org.simantics.databoard.util.Range[strs.length];
 391                     for (int i=0; i<strs.length; i++)
 392                         lengths[i] = org.simantics.databoard.util.Range.valueOf(strs[i]);
 393                 }
 394
 395                 if ( binding.componentBinding==null && request.componentBindings!=null ) binding.componentBinding = request.componentBindings[0];
 396                 if ( binding.componentBinding == null) {
 397                         BindingRequest componentRequest = request.componentRequests != null ? request.componentRequests[0] : null;
 398                                 if (componentRequest==null) {
 399                                         if (componentClass==null) {
 400                                                 componentClass = Object.class;
 401                                         // throw new BindingConstructionException("Cannot determine array component type");
 402                                         }
 403                                         componentRequest = new BindingRequest(componentClass, componentAnnotations);
 404                                 }
 405
 406                                 inprogress.put(request, binding);
 407                                 binding.componentBinding = construct( componentRequest );
 408                                 inprogress.remove(request);
 409                         }
 410
 411                         type.componentType = binding.componentBinding.type();
 412
 413                 // Multi-dimensional Array. Apply range to sub-array-types
 414                 ArrayType t = type;
 415                 if (lengths!=null) {
 416                     for (int i=0; i<lengths.length; i++) {
 417                         t.setLength( lengths[i] );
 418                         if (i<lengths.length-1)
 419                             t = (ArrayType) t.componentType;
 420                     }
 421                 }
 422                 }
 423
 424                 /// Map
 425             // Map Type
 426             if ( result instanceof MapBinding ) {
 427                 MapBinding binding = (MapBinding) result;
 428
 429                         Arguments argumentsAnnotation = request.getAnnotation(Arguments.class);
 430                         Annotation[] componentAnnotations = request.dropAnnotations( 2 );
 431                 Class<?>[] arguments = argumentsAnnotation != null ? argumentsAnnotation.value() : null;
 432
 433                 BindingRequest keyRequest = null;
 434                 BindingRequest valueRequest = null;
 435
 436                 Binding keyBinding = null;
 437                 Binding valueBinding = null;
 438
 439                         if (binding.getKeyBinding() != null) {
 440                             keyBinding = binding.getKeyBinding();
 441                         }
 442                         else if (request.componentBindings != null) {
 443                                 keyBinding = request.componentBindings[0];
 444                         }
 445                         else if (request.componentRequests != null) {
 446                                 keyRequest = request.componentRequests[0];
 447                         }
 448                         else {
 449                                 Class<?> keyClass = arguments != null && arguments.length >= 1 ? arguments[0] : null;
 450                     if (keyClass==null) {
 451                         keyClass = Object.class;
 452                         //throw new BindingConstructionException("Cannot determine key class, use @Arguments annotation");
 453                     }
 454                     keyRequest = new BindingRequest(keyClass, componentAnnotations);
 455                         }
 456
 457                         if (binding.getValueBinding() != null) {
 458                     valueBinding = binding.getValueBinding();
 459                         }
 460                         else if (request.componentBindings != null) {
 461                                 valueBinding = request.componentBindings[1];
 462                         }
 463                         else if (request.componentRequests != null) {
 464                                 valueRequest = request.componentRequests[1];
 465                         }
 466                         else {
 467                                 Class<?> valueClass = arguments != null && arguments.length >= 2 ? arguments[1] : null;
 468                     if (valueClass==null) {
 469                         valueClass = Object.class;
 470                         //throw new BindingConstructionException("Cannot determine value class, use @Arguments annotation");
 471                     }
 472                     valueRequest = new BindingRequest(valueClass, componentAnnotations);
 473                         }
 474
 475                         inprogress.put(request, result);
 476                         if (keyRequest!=null) {
 477                                 keyBinding = construct( keyRequest );
 478                         }
 479                         if (valueRequest!=null) {
 480                                 valueBinding = construct( valueRequest );
 481                         }
 482                 inprogress.remove(request);
 483
 484                 MapType type = binding.type();
 485                 type.keyType = keyBinding.type();
 486                 type.valueType = valueBinding.type();
 487                         binding.setKeyBinding( keyBinding );
 488                         binding.setValueBinding( valueBinding );
 489             }
 490
 491                 /// Optional
 492
 493
 494                 /// Union
 495
 496
 497                 /// Record
 498
 499                 // Its complete, store to repository
 500                         repository.put(request, result);
 501                 return result;
 502         }
 503
 504
 505
 506         if (request.getClazz().isEnum()) {
 507             Enum<?>[] enums = (Enum[]) request.getClazz().getEnumConstants();
 508             UnionType type = new UnionType();
 509             type.components = new Component[enums.length];
 510             for (int i=0; i<enums.length; i++) {
 511                 String name = enums[i].name();
 512                 type.components[i] = new Component(name, new RecordType(false));
 513             }
 514             EnumClassBinding binding = new EnumClassBinding(type, (Class<Enum<?>>) request.getClazz() );
 515             repository.put(request, binding);
 516             return binding;
 517         }
 518
 519         // Union type
 520         if(request.hasAnnotation(Union.class)) {
 521                 Union union = request.getAnnotation(Union.class);
 522                 UnionType type = new UnionType();
 523                         UnionClassBinding binding = new UnionClassBinding(type);
 524             Class<?>[] cases = union.value();
 525                         int count = cases.length;
 526             Binding[] componentBindings = new Binding[count];
 527             type.components = new Component[ count ];
 528             binding.componentClasses = new Class<?>[ count ];
 529             binding.setComponentBindings(componentBindings);
 530
 531                         inprogress.put(request, binding);
 532             for(int i=0;i<count;++i) {
 533                 binding.componentClasses[i]= cases[i];
 534                 Component component = type.components[i] = new Component(cases[i].getSimpleName(), null /* updated later*/);
 535                 BindingRequest componentRequest = new BindingRequest( cases[i] );
 536                 Binding componentBinding = componentBindings[i] = construct( componentRequest );
 537                 component.type = componentBinding.type();
 538             }
 539
 540                         inprogress.remove(request);
 541                         repository.put(request, binding);
 542             return binding;
 543         }
 544
 545         // Record type
 546         {
 547                 RecordType type = new RecordType();
 548                 ClassInfo ci = ClassInfo.getInfo( request.getClazz() );
 549                 boolean publicClass = Modifier.isPublic( request.getClazz().getModifiers() );
 550                 boolean useAsmBinding = asmClassBindingFactory!=null && publicClass;
 551                 RecordBindingProvider f = useAsmBinding ? asmClassBindingFactory : refClassBindingFactory;
 552                 RecordBinding binding = f.provideRecordBinding( request.getClazz(), type);
 553                 int count = ci.fields.length;
 554                 Binding[] componentBindings = binding.getComponentBindings();
 555             Component[] components = new Component[ count ];
 556             type.setReferable( request.getAnnotation(Referable.class) != null );
 557             type.setComponents( components );
 558
 559                         inprogress.put(request, binding);
 560                         List<Integer> identifierIndices = new ArrayList<Integer>(1);
 561             for(int i=0;i<type.getComponentCount();++i) {
 562                 Field field = ci.fields[i];
 563                 Annotation[] annotations = getFieldAnnotations(field);
 564                 Class<?> fieldClass = field.getType();
 565                 BindingRequest componentRequest = new BindingRequest(fieldClass, annotations);
 566
 567                 Name nameAnnotation = componentRequest.getAnnotation( Name.class );
 568                 String fieldName = nameAnnotation!=null ? nameAnnotation.value() : field.getName();
 569                 Component c = components[i] = new Component(fieldName, null /* updated later */);
 570
 571                 Identifier idAnnotation = componentRequest.getAnnotation( Identifier.class );
 572                 if ( idAnnotation!=null ) {
 573                         componentRequest.dropAnnotations(1, idAnnotation);
 574                         identifierIndices.add( i );
 575                 }
 576                 Binding componentBinding = componentBindings[i] = construct( componentRequest );
 577                 c.type = componentBinding.type();
 578             }
 579             type.setIdentifiers(identifierIndices);
 580                         inprogress.remove(request);
 581                         repository.put(request, binding);
 582             return binding;
 583         }
 584         }
 585
 586         public Binding construct(BindingRequest request)
 587         throws BindingConstructionException
 588         {
 589                 if (failures.containsKey(request)) throw failures.get(request);
 590                 if (inprogress.containsKey(request)) return inprogress.get(request);
 591                 if (repository.containsRequest(request)) return repository.get(request);
 592
 593                 // Start construction
 594                 try {
 595                         Binding binding = doConstruct(request);
 596
 597                         // Avoid creating duplicate binding instances
 598                         // Only check bindings that are complete
 599                         if (inprogress.isEmpty() || isComplete(binding, new IdentityHashSet<Binding>())) {
 600                                 Binding defaultBinding = defaultBindingFactory.getBinding(binding.type());
 601                                 if (defaultBinding != null && defaultBinding.equals(binding))
 602                                         binding = defaultBinding;
 603                         }
 604
 605                         repository.put(request, binding);
 606
 607                         return binding;
 608                 } catch (RangeException e) {
 609                         inprogress.remove( request );
 610                         BindingConstructionException bce = new BindingConstructionException( e );
 611                         failures.put(request, bce);
 612                         throw bce;
 613                 } catch (BindingConstructionException e) {
 614                         inprogress.remove( request );
 615                         failures.put(request, e);
 616                         throw e;
 617                 } catch (Throwable t) {
 618                         BindingConstructionException bce = new BindingConstructionException( t );
 619                         inprogress.remove( request );
 620                         failures.put(request, bce);
 621                         throw bce;
 622                 }
 623         }
 624
 625         boolean isComplete(Binding binding, IdentityHashSet<Binding> checked) {
 626                 for (Binding b : inprogress.values())
 627                         if (b == binding) return false;
 628
 629                 if (checked.contains(binding)) return true;
 630
 631                 if (binding.getComponentCount() > 0) {
 632                         checked.add(binding);
 633                         for (int i = 0; i < binding.getComponentCount(); i++) {
 634                                 if (!isComplete(binding.getComponentBinding(i), checked))
 635                                         return false;
 636                         }
 637                 }
 638
 639                 return true;
 640         }
 641
 642         /**
 643          * Get a binding to a Java Class. Type details can be modified with annotations.
 644          * Please see the package org.simantics.databoard.annotations.
 645          * <p>
 646          *
 647          * The whether the result binding is a completely mutable or not depends on the
 648          * provided classes. For instance, fields such as Boolean, Integer, Long
 649          * are not mutable, instead MutableBoolean, MutableInteger and MutableLong are.
 650          * The length of Object[] is not mutable, but length of List<Object> is. <p>
 651          *
 652          * Note, results are stored with strong reference into the repository assigned
 653          * to this factory.<p>
 654          *
 655          * @see ClassBindingFactory
 656          * @param clazz
 657          * @return binding
 658          * @throws BindingConstructionException
 659          */
 660     @SuppressWarnings("unchecked")
 661         public <T extends Binding> T getBinding(Class<?> clazz)
 662     throws BindingConstructionException
 663     {
 664         return (T) construct( new BindingRequest(clazz) );
 665     }
 666
 667         /**
 668          * Get a binding to a Java Class. Use this method to acquire class
 669          * parameters for a generics class. <p>
 670          *
 671          * Example 1:
 672          *
 673          *    Binding binding = getBinding(Map.class, String.class, Integer.class);
 674          *    Map<String, Integer> map = (Map<String, Integer>) binding.createDefault();
 675          *
 676          * Example 2:
 677          *
 678      *  Binding d = getBinding(List.class, Integer.class);
 679          *  List<Integer> list = (List<Integer>) d.createRandom(5);
 680          *
 681          * Example 3:
 682          *
 683      *  Binding d = getBinding(List.class, List.class, Integer.class);
 684          *  List<List<Integer>> list = (List<List<Integer>>) d.createRandom(5);
 685          *
 686          * @see ClassBindingFactory
 687          * @param clazz
 688          * @return binding
 689          * @throws BindingConstructionException
 690          */
 691     @SuppressWarnings("unchecked")
 692         public <T extends Binding> T getBinding(Class<?> clazz, Class<?>...parameters)
 693     throws BindingConstructionException
 694     {
 695         Arguments args = new ArgumentImpl(parameters);
 696         BindingRequest request = new BindingRequest( clazz, args );
 697         return (T) construct( request );
 698     }
 699
 700         public Binding getBinding(BindingRequest request) throws BindingConstructionException {
 701                 return construct(request);
 702         }
 703
 704         public Binding getBindingUnchecked(BindingRequest request) throws RuntimeBindingConstructionException {
 705                 try {
 706                         return construct(request);
 707                 } catch (BindingConstructionException e) {
 708                         throw new RuntimeBindingConstructionException(e);
 709                 }
 710         }
 711
 712         static Class<?>[] NO_CLASSES = new Class<?>[0];
 713
 714     public static Annotation[] getFieldAnnotations(Field field)
 715     {
 716         Annotation[] annotations = field.getAnnotations().clone();
 717         ArrayList<Class<?>> list = new ArrayList<Class<?>>();
 718         getTypes( field.getGenericType(), list );
 719         Class<?> fieldClass = list.remove(0);
 720         Class<?>[] parameterClasses = list.isEmpty() ? NO_CLASSES : list.toArray( NO_CLASSES );
 721
 722         if (Set.class.isAssignableFrom(fieldClass) && parameterClasses!=null &&parameterClasses.length==1) {
 723                 Annotation[] a2 = new Annotation[annotations.length+1];
 724                 System.arraycopy(annotations, 0, a2, 0, annotations.length);
 725
 726                 Class<?> keyType = parameterClasses[0];
 727                 a2[annotations.length] = new ArgumentImpl(keyType);
 728                 annotations = a2;
 729         }
 730         if (Map.class.isAssignableFrom(fieldClass) && parameterClasses!=null && parameterClasses.length==2) {
 731                 Annotation[] a2 = new Annotation[annotations.length+1];
 732                 System.arraycopy(annotations, 0, a2, 0, annotations.length);
 733
 734                 Class<?> keyType = parameterClasses[0];
 735                 Class<?> valueType = parameterClasses[1];
 736                 a2[annotations.length] = new ArgumentImpl(keyType, valueType);
 737                 annotations = a2;
 738         }
 739         if (List.class.isAssignableFrom(fieldClass) && parameterClasses!=null && parameterClasses.length==1) {
 740                 Annotation[] a2 = new Annotation[annotations.length+1];
 741                 System.arraycopy(annotations, 0, a2, 0, annotations.length);
 742                 Class<?> componentType = parameterClasses[0];
 743                 a2[annotations.length] = new ArgumentImpl(componentType);
 744                 annotations = a2;
 745         }
 746
 747         if (parameterClasses!=null && parameterClasses.length>0) {
 748                 Annotation[] a2 = new Annotation[annotations.length+1];
 749                 System.arraycopy(annotations, 0, a2, 0, annotations.length);
 750                 a2[annotations.length] = new ArgumentImpl(parameterClasses);
 751                 annotations = a2;
 752         }
 753
 754         return annotations;
 755     }
 756
 757     static void getTypes(Type type, Collection<Class<?>> result)
 758     {
 759         if ( type instanceof Class ) {
 760                 result.add( (Class<?>) type );
 761         } else
 762         if ( type instanceof ParameterizedType ) {
 763                         ParameterizedType p = (ParameterizedType) type;
 764                         getTypes( p.getRawType(), result );
 765                 for ( Type x : p.getActualTypeArguments() ) getTypes(x, result);
 766         } else
 767                 if ( type instanceof GenericArrayType) {
 768                         GenericArrayType at = (GenericArrayType) type;
 769                         Type componentType = at.getGenericComponentType();
 770                         ArrayList<Class<?>> list = new ArrayList<Class<?>>(1);
 771                         getTypes( componentType, list );
 772                         // To Array class
 773                         Object dummy = Array.newInstance(list.get(0), 0);
 774                         result.add( dummy.getClass() );
 775                 } else if ( type instanceof TypeVariable ) {
 776                         result.add( Object.class );
 777                 } else
 778                 throw new RuntimeException( type.getClass()+ " is not implemented" );
 779     }
 780
 781     /**
 782      * Get all actual parameters types, incl. classes and generic types
 783      *
 784      * @param f
 785      * @return
 786      */
 787         static Type[] getParameterTypes(Field f) {
 788                 Type t = f.getGenericType();
 789                 if (t==null || t instanceof ParameterizedType==false) return new Class[0];
 790                 ParameterizedType p = (ParameterizedType) t;
 791                 return p.getActualTypeArguments();
 792     }
 793
 794
 795 }