binding2/mdsal-binding2-dom-codec/src/main/java/org/opendaylight/mdsal/binding/javav2/dom/codec/impl/context/base/BindingCodecContext.java

   1 /*
   2  * Copyright (c) 2017 Pantheon Technologies s.r.o. and others.  All rights reserved.
   3  *
   4  * This program and the accompanying materials are made available under the
   5  * terms of the Eclipse Public License v1.0 which accompanies this distribution,
   6  * and is available at http://www.eclipse.org/legal/epl-v10.html
   7  */
   8 package org.opendaylight.mdsal.binding.javav2.dom.codec.impl.context.base;
   9
  10 import static java.util.Objects.requireNonNull;
  11
  12 import com.google.common.annotations.Beta;
  13 import com.google.common.base.Preconditions;
  14 import com.google.common.collect.ImmutableMap;
  15 import java.lang.reflect.Method;
  16 import java.lang.reflect.ParameterizedType;
  17 import java.lang.reflect.Type;
  18 import java.util.AbstractMap.SimpleEntry;
  19 import java.util.Collection;
  20 import java.util.HashMap;
  21 import java.util.LinkedList;
  22 import java.util.List;
  23 import java.util.Map;
  24 import java.util.Map.Entry;
  25 import java.util.concurrent.Callable;
  26 import javax.annotation.Nonnull;
  27 import javax.annotation.Nullable;
  28 import javax.xml.transform.dom.DOMSource;
  29 import org.opendaylight.mdsal.binding.javav2.dom.codec.api.BindingTreeCodec;
  30 import org.opendaylight.mdsal.binding.javav2.dom.codec.api.BindingTreeNodeCodec;
  31 import org.opendaylight.mdsal.binding.javav2.dom.codec.impl.AnyxmlCodec;
  32 import org.opendaylight.mdsal.binding.javav2.dom.codec.impl.BindingNormalizedNodeCodecRegistry;
  33 import org.opendaylight.mdsal.binding.javav2.dom.codec.impl.IdentifiableItemCodec;
  34 import org.opendaylight.mdsal.binding.javav2.dom.codec.impl.IdentityCodec;
  35 import org.opendaylight.mdsal.binding.javav2.dom.codec.impl.InstanceIdentifierCodec;
  36 import org.opendaylight.mdsal.binding.javav2.dom.codec.impl.OperationInputCodec;
  37 import org.opendaylight.mdsal.binding.javav2.dom.codec.impl.UnionTypeCodec;
  38 import org.opendaylight.mdsal.binding.javav2.dom.codec.impl.context.CaseNodeCodecContext;
  39 import org.opendaylight.mdsal.binding.javav2.dom.codec.impl.context.ChoiceNodeCodecContext;
  40 import org.opendaylight.mdsal.binding.javav2.dom.codec.impl.context.ListNodeCodecContext;
  41 import org.opendaylight.mdsal.binding.javav2.dom.codec.impl.context.NotificationCodecContext;
  42 import org.opendaylight.mdsal.binding.javav2.dom.codec.impl.context.SchemaRootCodecContext;
  43 import org.opendaylight.mdsal.binding.javav2.dom.codec.impl.context.ValueContext;
  44 import org.opendaylight.mdsal.binding.javav2.dom.codec.impl.context.base.NodeCodecContext.CodecContextFactory;
  45 import org.opendaylight.mdsal.binding.javav2.dom.codec.impl.value.ValueTypeCodec;
  46 import org.opendaylight.mdsal.binding.javav2.generator.util.JavaIdentifier;
  47 import org.opendaylight.mdsal.binding.javav2.generator.util.JavaIdentifierNormalizer;
  48 import org.opendaylight.mdsal.binding.javav2.model.api.GeneratedType;
  49 import org.opendaylight.mdsal.binding.javav2.runtime.context.BindingRuntimeContext;
  50 import org.opendaylight.mdsal.binding.javav2.runtime.reflection.BindingReflections;
  51 import org.opendaylight.mdsal.binding.javav2.spec.base.IdentifiableItem;
  52 import org.opendaylight.mdsal.binding.javav2.spec.base.InstanceIdentifier;
  53 import org.opendaylight.mdsal.binding.javav2.spec.base.Instantiable;
  54 import org.opendaylight.mdsal.binding.javav2.spec.base.Notification;
  55 import org.opendaylight.mdsal.binding.javav2.spec.base.TreeArgument;
  56 import org.opendaylight.mdsal.binding.javav2.spec.base.TreeNode;
  57 import org.opendaylight.mdsal.binding.javav2.spec.runtime.BindingStreamEventWriter;
  58 import org.opendaylight.mdsal.binding.javav2.spec.runtime.TreeNodeSerializer;
  59 import org.opendaylight.yangtools.concepts.Codec;
  60 import org.opendaylight.yangtools.concepts.Identifiable;
  61 import org.opendaylight.yangtools.concepts.Identifier;
  62 import org.opendaylight.yangtools.concepts.Immutable;
  63 import org.opendaylight.yangtools.util.ClassLoaderUtils;
  64 import org.opendaylight.yangtools.yang.common.Empty;
  65 import org.opendaylight.yangtools.yang.common.QName;
  66 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
  67 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.NodeIdentifierWithPredicates;
  68 import org.opendaylight.yangtools.yang.data.api.schema.stream.NormalizedNodeStreamWriter;
  69 import org.opendaylight.yangtools.yang.model.api.AnyXmlSchemaNode;
  70 import org.opendaylight.yangtools.yang.model.api.DataNodeContainer;
  71 import org.opendaylight.yangtools.yang.model.api.DataSchemaNode;
  72 import org.opendaylight.yangtools.yang.model.api.LeafListSchemaNode;
  73 import org.opendaylight.yangtools.yang.model.api.LeafSchemaNode;
  74 import org.opendaylight.yangtools.yang.model.api.ListSchemaNode;
  75 import org.opendaylight.yangtools.yang.model.api.SchemaNode;
  76 import org.opendaylight.yangtools.yang.model.api.SchemaPath;
  77 import org.opendaylight.yangtools.yang.model.api.TypeDefinition;
  78 import org.opendaylight.yangtools.yang.model.api.TypedDataSchemaNode;
  79 import org.opendaylight.yangtools.yang.model.api.type.BooleanTypeDefinition;
  80 import org.opendaylight.yangtools.yang.model.api.type.IdentityrefTypeDefinition;
  81 import org.opendaylight.yangtools.yang.model.api.type.InstanceIdentifierTypeDefinition;
  82 import org.opendaylight.yangtools.yang.model.api.type.LeafrefTypeDefinition;
  83 import org.opendaylight.yangtools.yang.model.api.type.UnionTypeDefinition;
  84 import org.slf4j.Logger;
  85 import org.slf4j.LoggerFactory;
  86 import org.w3c.dom.Document;
  87
  88 /**
  89  * Binding codec context for holding runtime part and codecs.
  90  */
  91 @Beta
  92 public final class BindingCodecContext implements CodecContextFactory, BindingTreeCodec, Immutable {
  93
  94     private static final Logger LOG = LoggerFactory.getLogger(BindingCodecContext.class);
  95
  96     private final Codec<YangInstanceIdentifier, InstanceIdentifier<?>> instanceIdentifierCodec;
  97     private final Codec<QName, Class<?>> identityCodec;
  98     private final Codec<DOMSource, Document> anyxmlCodec;
  99     private final BindingNormalizedNodeCodecRegistry registry;
 100     private final BindingRuntimeContext context;
 101     private final SchemaRootCodecContext<?> root;
 102
 103     /**
 104      * Prepare runtime context and codec registry.
 105      *
 106      * @param context
 107      *            - runtime context
 108      * @param registry
 109      *            - binding normalized node codec registry
 110      */
 111     public BindingCodecContext(final BindingRuntimeContext context, final BindingNormalizedNodeCodecRegistry registry) {
 112         this.context = requireNonNull(context, "Binding Runtime Context is required.");
 113         this.root = SchemaRootCodecContext.create(this);
 114         this.identityCodec = new IdentityCodec(context);
 115         this.anyxmlCodec = new AnyxmlCodec(context);
 116         this.instanceIdentifierCodec = new InstanceIdentifierCodec(this);
 117         this.registry = requireNonNull(registry);
 118     }
 119
 120     @Override
 121     public BindingRuntimeContext getRuntimeContext() {
 122         return context;
 123     }
 124
 125     /**
 126      * Get instance identifier codec.
 127      *
 128      * @return instance identifier codec
 129      */
 130     public Codec<YangInstanceIdentifier, InstanceIdentifier<?>> getInstanceIdentifierCodec() {
 131         return instanceIdentifierCodec;
 132     }
 133
 134     /**
 135      * Get identity codec.
 136      *
 137      * @return identity codec
 138      */
 139     public Codec<QName, Class<?>> getIdentityCodec() {
 140         return identityCodec;
 141     }
 142
 143     /**
 144      * Get anyxml codec.
 145      *
 146      * @return anyxml codec
 147      */
 148     public Codec<DOMSource, Document> getAnyxmlCodec() {
 149         return anyxmlCodec;
 150     }
 151
 152     @SuppressWarnings({ "rawtypes", "unchecked" })
 153     @Override
 154     public TreeNodeSerializer getEventStreamSerializer(final Class<?> type) {
 155         return registry.getSerializer((Class) type);
 156     }
 157
 158     /**
 159      * Prepare specific writer for binding path.
 160      *
 161      * @param path
 162      *            - binding path
 163      * @param domWriter
 164      *            - DOM writer
 165      * @return entry of DOM path and writer
 166      */
 167     public Entry<YangInstanceIdentifier, BindingStreamEventWriter> newWriter(final InstanceIdentifier<?> path,
 168             final NormalizedNodeStreamWriter domWriter) {
 169         final List<YangInstanceIdentifier.PathArgument> yangArgs = new LinkedList<>();
 170         final DataContainerCodecContext<?, ?> codecContext = getCodecContextNode(path, yangArgs);
 171         return new SimpleEntry<>(YangInstanceIdentifier.create(yangArgs), codecContext.createWriter(domWriter));
 172     }
 173
 174     /**
 175      * Prepare specific writer for binding path without DOM identifier.
 176      *
 177      * @param path
 178      *            - binding path
 179      * @param domWriter
 180      *            - DOM writer
 181      * @return stream event writer for binding path
 182      */
 183     public BindingStreamEventWriter newWriterWithoutIdentifier(final InstanceIdentifier<?> path,
 184             final NormalizedNodeStreamWriter domWriter) {
 185         return getCodecContextNode(path, null).createWriter(domWriter);
 186     }
 187
 188     /**
 189      * Prepare specific writer for operations.
 190      *
 191      * @param operationInputOrOutput
 192      *            - binding data
 193      * @param domWriter
 194      *            - DOM writer
 195      * @return stream event writer for operation
 196      */
 197     public BindingStreamEventWriter newOperationWriter(final Class<? extends Instantiable<?>> operationInputOrOutput,
 198             final NormalizedNodeStreamWriter domWriter) {
 199         return root.getOperation(operationInputOrOutput).createWriter(domWriter);
 200     }
 201
 202     @SuppressWarnings("rawtypes")
 203     public BindingStreamEventWriter newNotificationWriter(final Class<? extends Notification> notification,
 204             final NormalizedNodeStreamWriter domWriter) {
 205         return root.getNotification(notification).createWriter(domWriter);
 206     }
 207
 208     /**
 209      * Prepare context from Binding and DOM path.
 210      *
 211      * @param binding
 212      *            - binding path
 213      * @param builder
 214      *            - DOM path
 215      *
 216      * @return context for path
 217      */
 218     public DataContainerCodecContext<?, ?> getCodecContextNode(final InstanceIdentifier<?> binding,
 219             final List<YangInstanceIdentifier.PathArgument> builder) {
 220         DataContainerCodecContext<?, ?> currentNode = root;
 221         for (final TreeArgument<?> bindingArg : binding.getPathArguments()) {
 222             currentNode = currentNode.bindingPathArgumentChild(bindingArg, builder);
 223             Preconditions.checkArgument(currentNode != null, "Supplied Instance Identifier %s is not valid.", binding);
 224         }
 225         return currentNode;
 226     }
 227
 228     /**
 229      * Multi-purpose utility function. Traverse the codec tree, looking for the appropriate codec for the
 230      * specified {@link YangInstanceIdentifier}. As a side-effect, gather all traversed binding
 231      * {@link TreeArgument} into the supplied collection.
 232      *
 233      * @param dom
 234      *            {@link YangInstanceIdentifier} which is to be translated
 235      * @param bindingArguments
 236      *            Collection for traversed path arguments
 237      * @return Codec for target node, or @null if the node does not have a binding representation (choice,
 238      *         case, leaf).
 239      *
 240      */
 241     @Nullable
 242     public NodeCodecContext<?> getCodecContextNode(final @Nonnull YangInstanceIdentifier dom,
 243             final @Nullable Collection<TreeArgument<?>> bindingArguments) {
 244         NodeCodecContext<?> currentNode = root;
 245         ListNodeCodecContext<?> currentList = null;
 246
 247         for (final YangInstanceIdentifier.PathArgument domArg : dom.getPathArguments()) {
 248             Preconditions.checkArgument(currentNode instanceof DataContainerCodecContext<?, ?>,
 249                     "Unexpected child of non-container node %s", currentNode);
 250             final DataContainerCodecContext<?, ?> previous = (DataContainerCodecContext<?, ?>) currentNode;
 251             final NodeCodecContext<?> nextNode = previous.yangPathArgumentChild(domArg);
 252
 253             /*
 254              * List representation in YANG Instance Identifier consists of two arguments: first is list as a
 255              * whole, second is list as an item so if it is /list it means list as whole, if it is /list/list
 256              * - it is wildcarded and if it is /list/list[key] it is concrete item, all this variations are
 257              * expressed in Binding Aware Instance Identifier as Item or IdentifiableItem
 258              */
 259             if (currentList != null) {
 260                 Preconditions.checkArgument(currentList == nextNode,
 261                         "List should be referenced two times in YANG Instance Identifier %s", dom);
 262
 263                 // We entered list, so now we have all information to emit
 264                 // list path using second list argument.
 265                 if (bindingArguments != null) {
 266                     bindingArguments.add(currentList.getBindingPathArgument(domArg));
 267                 }
 268                 currentList = null;
 269                 currentNode = nextNode;
 270             } else if (nextNode instanceof ListNodeCodecContext) {
 271                 // We enter list, we do not update current Node yet,
 272                 // since we need to verify
 273                 currentList = (ListNodeCodecContext<?>) nextNode;
 274             } else if (nextNode instanceof ChoiceNodeCodecContext) {
 275                 // We do not add path argument for choice, since
 276                 // it is not supported by binding instance identifier.
 277                 currentNode = nextNode;
 278             } else if (nextNode instanceof DataContainerCodecContext<?, ?>) {
 279                 if (bindingArguments != null) {
 280                     bindingArguments.add(((DataContainerCodecContext<?, ?>) nextNode).getBindingPathArgument(domArg));
 281                 }
 282                 currentNode = nextNode;
 283             } else if (nextNode instanceof LeafNodeCodecContext) {
 284                 LOG.debug("Instance identifier referencing a leaf is not representable (%s)", dom);
 285                 return null;
 286             }
 287         }
 288
 289         // Algorithm ended in list as whole representation
 290         // we sill need to emit identifier for list
 291         if (currentNode instanceof ChoiceNodeCodecContext) {
 292             LOG.debug("Instance identifier targeting a choice is not representable (%s)", dom);
 293             return null;
 294         }
 295         if (currentNode instanceof CaseNodeCodecContext) {
 296             LOG.debug("Instance identifier targeting a case is not representable (%s)", dom);
 297             return null;
 298         }
 299
 300         if (currentList != null) {
 301             if (bindingArguments != null) {
 302                 bindingArguments.add(currentList.getBindingPathArgument(null));
 303             }
 304             return currentList;
 305         }
 306         return currentNode;
 307     }
 308
 309     /**
 310      * Get notification codec according to notification schema path.
 311      *
 312      * @param notification
 313      *            - schema path of notification
 314      * @return notification codec context
 315      */
 316     public NotificationCodecContext<?> getNotificationContext(final SchemaPath notification) {
 317         return root.getNotification(notification);
 318     }
 319
 320     /**
 321      * Get operation input codec.
 322      *
 323      * @param path
 324      *            - path of input data of operation
 325      * @return operation input codec
 326      */
 327     public OperationInputCodec<?> getOperationInputCodec(final SchemaPath path) {
 328         return root.getOperation(path);
 329     }
 330
 331     @Override
 332     public ImmutableMap<String, LeafNodeCodecContext<?>> getLeafNodes(final Class<?> parentClass,
 333             final DataNodeContainer childSchema) {
 334         final Map<String, DataSchemaNode> getterToLeafSchema = new HashMap<>();
 335         for (final DataSchemaNode leaf : childSchema.getChildNodes()) {
 336             if (leaf instanceof TypedDataSchemaNode) {
 337                 getterToLeafSchema.put(getGetterName(leaf, ((TypedDataSchemaNode) leaf).getType()), leaf);
 338             }
 339         }
 340         return getLeafNodesUsingReflection(parentClass, getterToLeafSchema);
 341     }
 342
 343     @Override
 344     public ImmutableMap<String, AnyxmlNodeCodecContext<?>> getAnyxmlNodes(final Class<?> parentClass,
 345             final DataNodeContainer childSchema) {
 346         final Map<String, DataSchemaNode> getterToAnyxmlSchema = new HashMap<>();
 347         for (final DataSchemaNode anyxml : childSchema.getChildNodes()) {
 348             if (anyxml instanceof AnyXmlSchemaNode) {
 349                 getterToAnyxmlSchema.put(getGetterName(anyxml.getQName(), false), anyxml);
 350             }
 351         }
 352         return getAnyxmlNodesUsingReflection(parentClass, getterToAnyxmlSchema);
 353     }
 354
 355     private static String getGetterName(final SchemaNode node, final TypeDefinition<?> typeDef) {
 356         final String suffix = JavaIdentifierNormalizer.normalizeSpecificIdentifier(node.getQName().getLocalName(),
 357             JavaIdentifier.CLASS);
 358
 359         if (typeDef instanceof BooleanTypeDefinition
 360                 && (typeDef.getPath().equals(node.getPath()) || typeDef.getBaseType() == null)) {
 361             return "is" + suffix;
 362         }
 363
 364         return "get" + suffix;
 365     }
 366
 367     private static String getGetterName(final QName qname, final boolean booleanOrEmpty) {
 368         final String suffix =
 369                 JavaIdentifierNormalizer.normalizeSpecificIdentifier(qname.getLocalName(), JavaIdentifier.CLASS);
 370         if (booleanOrEmpty) {
 371             return "is" + suffix;
 372         }
 373         return "get" + suffix;
 374     }
 375
 376     private ImmutableMap<String, LeafNodeCodecContext<?>> getLeafNodesUsingReflection(final Class<?> parentClass,
 377             final Map<String, DataSchemaNode> getterToLeafSchema) {
 378         final Map<String, LeafNodeCodecContext<?>> leaves = new HashMap<>();
 379         for (final Method method : parentClass.getMethods()) {
 380             if (method.getParameterTypes().length == 0) {
 381                 final DataSchemaNode schema = getterToLeafSchema.get(method.getName());
 382                 final Class<?> valueType;
 383                 if (schema instanceof LeafSchemaNode) {
 384                     valueType = method.getReturnType();
 385                 } else if (schema instanceof LeafListSchemaNode) {
 386                     final Type genericType = ClassLoaderUtils.getFirstGenericParameter(method.getGenericReturnType());
 387
 388                     if (genericType instanceof Class<?>) {
 389                         valueType = (Class<?>) genericType;
 390                     } else if (genericType instanceof ParameterizedType) {
 391                         valueType = (Class<?>) ((ParameterizedType) genericType).getRawType();
 392                     } else {
 393                         throw new IllegalStateException("Unexpected return type " + genericType);
 394                     }
 395                 } else {
 396                     continue; // We do not have schema for leaf, so we will ignore it (eg. getClass,
 397                               // getImplementedInterface).
 398                 }
 399                 final Codec<Object, Object> codec = getCodec(valueType, schema);
 400                 final LeafNodeCodecContext<?> leafNode =
 401                         new LeafNodeCodecContext<>(schema, codec, method, context.getSchemaContext());
 402                 leaves.put(schema.getQName().getLocalName(), leafNode);
 403             }
 404         }
 405         return ImmutableMap.copyOf(leaves);
 406     }
 407
 408     private ImmutableMap<String, AnyxmlNodeCodecContext<?>> getAnyxmlNodesUsingReflection(final Class<?> parentClass,
 409             final Map<String, DataSchemaNode> getterToAnyxmlSchema) {
 410         final Map<String, AnyxmlNodeCodecContext<?>> anyxmls = new HashMap<>();
 411         for (final Method method : parentClass.getMethods()) {
 412             if (method.getParameterTypes().length == 0) {
 413                 final DataSchemaNode schema = getterToAnyxmlSchema.get(method.getName());
 414                 if (schema instanceof AnyXmlSchemaNode) {
 415                     final Class<?> valueType = method.getReturnType();
 416                     final Codec<Object, Object> codec = (Codec) getAnyxmlCodec();
 417                     final AnyxmlNodeCodecContext<?> anyxmlNodeCtx =
 418                             new AnyxmlNodeCodecContext<>(schema, codec, method, context.getSchemaContext());
 419                     anyxmls.put(schema.getQName().getLocalName(), anyxmlNodeCtx);
 420                 }
 421             }
 422         }
 423         return ImmutableMap.copyOf(anyxmls);
 424     }
 425
 426     private Codec<Object, Object> getCodec(final Class<?> valueType, final DataSchemaNode schema) {
 427         Preconditions.checkArgument(schema instanceof TypedDataSchemaNode, "Unsupported leaf node type %s", schema);
 428
 429         return getCodec(valueType, ((TypedDataSchemaNode) schema).getType());
 430     }
 431
 432     /**
 433      * Get specific codec for binding class by type.
 434      *
 435      * @param valueType
 436      *            - binding class
 437      * @param instantiatedType
 438      *            - type definition
 439      * @return specific codec
 440      */
 441     public Codec<Object, Object> getCodec(final Class<?> valueType, final TypeDefinition<?> instantiatedType) {
 442         if (Class.class.equals(valueType)) {
 443             @SuppressWarnings({ "unchecked", "rawtypes" })
 444             final Codec<Object, Object> casted = (Codec) identityCodec;
 445             return casted;
 446         } else if (InstanceIdentifier.class.equals(valueType)) {
 447             @SuppressWarnings({ "unchecked", "rawtypes" })
 448             final Codec<Object, Object> casted = (Codec) instanceIdentifierCodec;
 449             return casted;
 450         } else if (Empty.class.equals(valueType)) {
 451             return ValueTypeCodec.EMPTY_CODEC;
 452         } else if (BindingReflections.isBindingClass(valueType)) {
 453             return getCodecForBindingClass(valueType, instantiatedType);
 454         }
 455         return ValueTypeCodec.NOOP_CODEC;
 456     }
 457
 458     @SuppressWarnings("checkstyle:IllegalCatch")
 459     private Codec<Object, Object> getCodecForBindingClass(final Class<?> valueType, final TypeDefinition<?> typeDef) {
 460         if (typeDef instanceof IdentityrefTypeDefinition) {
 461             return ValueTypeCodec.encapsulatedValueCodecFor(valueType, typeDef, identityCodec);
 462         } else if (typeDef instanceof InstanceIdentifierTypeDefinition) {
 463             return ValueTypeCodec.encapsulatedValueCodecFor(valueType, typeDef, instanceIdentifierCodec);
 464         } else if (typeDef instanceof UnionTypeDefinition) {
 465             final Callable<UnionTypeCodec> loader =
 466                     UnionTypeCodec.loader(valueType, (UnionTypeDefinition) typeDef, this);
 467             try {
 468                 return loader.call();
 469             } catch (final Exception e) {
 470                 throw new IllegalStateException("Unable to load codec for " + valueType, e);
 471             }
 472         } else if (typeDef instanceof LeafrefTypeDefinition) {
 473             final Entry<GeneratedType, Object> typeWithSchema = context.getTypeWithSchema(valueType);
 474             final Object schema = typeWithSchema.getValue();
 475             Preconditions.checkState(schema instanceof TypeDefinition<?>);
 476             return getCodec(valueType, (TypeDefinition<?>) schema);
 477         }
 478         return ValueTypeCodec.getCodecFor(valueType, typeDef);
 479     }
 480
 481     @Override
 482     public Codec<NodeIdentifierWithPredicates, IdentifiableItem<?, ?>> getPathArgumentCodec(final Class<?> listClz,
 483             final ListSchemaNode schema) {
 484         final Class<? extends Identifier> identifier =
 485                 ClassLoaderUtils.findFirstGenericArgument(listClz, Identifiable.class);
 486         final Map<QName, ValueContext> valueCtx = new HashMap<>();
 487         for (final LeafNodeCodecContext<?> leaf : getLeafNodes(identifier, schema).values()) {
 488             final QName name = leaf.getDomPathArgument().getNodeType();
 489             valueCtx.put(name, new ValueContext(identifier, leaf));
 490         }
 491         return new IdentifiableItemCodec(schema, identifier, listClz, valueCtx);
 492     }
 493
 494     @SuppressWarnings("unchecked")
 495     @Nullable
 496     @Override
 497     public <T extends TreeNode> BindingTreeNodeCodec<T> getSubtreeCodec(final InstanceIdentifier<T> path) {
 498         return (BindingTreeNodeCodec<T>) getCodecContextNode(path, null);
 499     }
 500
 501     @Nullable
 502     @Override
 503     public BindingTreeNodeCodec<?> getSubtreeCodec(final YangInstanceIdentifier path) {
 504         return getCodecContextNode(path, null);
 505     }
 506
 507     @Nullable
 508     @Override
 509     public BindingTreeNodeCodec<?> getSubtreeCodec(final SchemaPath path) {
 510         throw new UnsupportedOperationException("Not implemented yet.");
 511     }
 512 }