Merge "Bug 2864: Fixed (de)serialization of leafrefs"
[yangtools.git] / code-generator / binding-data-codec / src / main / java / org / opendaylight / yangtools / binding / data / codec / impl / BindingCodecContext.java
index 6d1e31c2b47a1a3b7589ee060f89cbcd39156633..e0e0c97777e2dfab31450eefb1480c7f954fabee 100644 (file)
@@ -9,15 +9,10 @@ package org.opendaylight.yangtools.binding.data.codec.impl;
 
 import com.google.common.base.Preconditions;
 import com.google.common.collect.ImmutableMap;
-import com.google.common.collect.ImmutableSortedMap;
-
-import java.lang.reflect.Constructor;
-import java.lang.reflect.InvocationTargetException;
 import java.lang.reflect.Method;
 import java.lang.reflect.ParameterizedType;
 import java.lang.reflect.Type;
 import java.util.AbstractMap.SimpleEntry;
-import java.util.ArrayList;
 import java.util.Collection;
 import java.util.HashMap;
 import java.util.LinkedList;
@@ -25,22 +20,26 @@ import java.util.List;
 import java.util.Map;
 import java.util.Map.Entry;
 import java.util.concurrent.Callable;
-
 import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
-
+import org.opendaylight.yangtools.binding.data.codec.api.BindingCodecTree;
+import org.opendaylight.yangtools.binding.data.codec.api.BindingCodecTreeNode;
 import org.opendaylight.yangtools.binding.data.codec.impl.NodeCodecContext.CodecContextFactory;
 import org.opendaylight.yangtools.concepts.Codec;
 import org.opendaylight.yangtools.concepts.Immutable;
 import org.opendaylight.yangtools.sal.binding.generator.util.BindingRuntimeContext;
+import org.opendaylight.yangtools.sal.binding.model.api.GeneratedType;
 import org.opendaylight.yangtools.util.ClassLoaderUtils;
-import org.opendaylight.yangtools.yang.binding.BaseIdentity;
 import org.opendaylight.yangtools.yang.binding.BindingMapping;
 import org.opendaylight.yangtools.yang.binding.BindingStreamEventWriter;
+import org.opendaylight.yangtools.yang.binding.DataContainer;
+import org.opendaylight.yangtools.yang.binding.DataObject;
+import org.opendaylight.yangtools.yang.binding.DataObjectSerializer;
 import org.opendaylight.yangtools.yang.binding.Identifiable;
 import org.opendaylight.yangtools.yang.binding.Identifier;
 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier.IdentifiableItem;
+import org.opendaylight.yangtools.yang.binding.Notification;
 import org.opendaylight.yangtools.yang.binding.util.BindingReflections;
 import org.opendaylight.yangtools.yang.common.QName;
 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
@@ -51,27 +50,33 @@ import org.opendaylight.yangtools.yang.model.api.DataSchemaNode;
 import org.opendaylight.yangtools.yang.model.api.LeafListSchemaNode;
 import org.opendaylight.yangtools.yang.model.api.LeafSchemaNode;
 import org.opendaylight.yangtools.yang.model.api.ListSchemaNode;
+import org.opendaylight.yangtools.yang.model.api.SchemaPath;
 import org.opendaylight.yangtools.yang.model.api.TypeDefinition;
 import org.opendaylight.yangtools.yang.model.api.type.BooleanTypeDefinition;
+import org.opendaylight.yangtools.yang.model.api.type.EmptyTypeDefinition;
 import org.opendaylight.yangtools.yang.model.api.type.IdentityrefTypeDefinition;
 import org.opendaylight.yangtools.yang.model.api.type.InstanceIdentifierTypeDefinition;
+import org.opendaylight.yangtools.yang.model.api.type.LeafrefTypeDefinition;
 import org.opendaylight.yangtools.yang.model.api.type.UnionTypeDefinition;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
-class BindingCodecContext implements CodecContextFactory, Immutable {
+final class BindingCodecContext implements CodecContextFactory, BindingCodecTree, Immutable {
     private static final Logger LOG = LoggerFactory.getLogger(BindingCodecContext.class);
-    private static final String GETTER_PREFIX = "get";
+    static final String GETTER_PREFIX = "get";
 
-    private final SchemaRootCodecContext root;
+    private final Codec<YangInstanceIdentifier, InstanceIdentifier<?>> instanceIdentifierCodec;
+    private final Codec<QName, Class<?>> identityCodec;
+    private final BindingNormalizedNodeCodecRegistry registry;
     private final BindingRuntimeContext context;
-    private final Codec<YangInstanceIdentifier, InstanceIdentifier<?>> instanceIdentifierCodec =
-            new InstanceIdentifierCodec();
-    private final Codec<QName, Class<?>> identityCodec = new IdentityCodec();
+    private final SchemaRootCodecContext<?> root;
 
-    public BindingCodecContext(final BindingRuntimeContext context) {
+    BindingCodecContext(final BindingRuntimeContext context, BindingNormalizedNodeCodecRegistry registry) {
         this.context = Preconditions.checkNotNull(context, "Binding Runtime Context is required.");
         this.root = SchemaRootCodecContext.create(this);
+        this.identityCodec = new IdentityCodec(context);
+        this.instanceIdentifierCodec = new InstanceIdentifierCodec(this);
+        this.registry = Preconditions.checkNotNull(registry);
     }
 
     @Override
@@ -87,24 +92,40 @@ class BindingCodecContext implements CodecContextFactory, Immutable {
         return identityCodec;
     }
 
+    @SuppressWarnings({"rawtypes", "unchecked"})
+    @Override
+    public DataObjectSerializer getEventStreamSerializer(Class<?> type) {
+        return registry.getSerializer((Class) type);
+    }
+
     public Entry<YangInstanceIdentifier, BindingStreamEventWriter> newWriter(final InstanceIdentifier<?> path,
             final NormalizedNodeStreamWriter domWriter) {
-        LinkedList<YangInstanceIdentifier.PathArgument> yangArgs = new LinkedList<>();
-        DataContainerCodecContext<?> codecContext = getCodecContextNode(path, yangArgs);
-        BindingStreamEventWriter writer = new BindingToNormalizedStreamWriter(codecContext, domWriter);
-        return new SimpleEntry<>(YangInstanceIdentifier.create(yangArgs), writer);
+        final LinkedList<YangInstanceIdentifier.PathArgument> yangArgs = new LinkedList<>();
+        final DataContainerCodecContext<?,?> codecContext = getCodecContextNode(path, yangArgs);
+        return new SimpleEntry<>(YangInstanceIdentifier.create(yangArgs), codecContext.createWriter(domWriter));
     }
 
     public BindingStreamEventWriter newWriterWithoutIdentifier(final InstanceIdentifier<?> path,
             final NormalizedNodeStreamWriter domWriter) {
-        return new BindingToNormalizedStreamWriter(getCodecContextNode(path, null), domWriter);
+        return getCodecContextNode(path, null).createWriter(domWriter);
+    }
+
+    BindingStreamEventWriter newRpcWriter(final Class<? extends DataContainer> rpcInputOrOutput,
+            final NormalizedNodeStreamWriter domWriter) {
+        return root.getRpc(rpcInputOrOutput).createWriter(domWriter);
+    }
+
+    BindingStreamEventWriter newNotificationWriter(final Class<? extends Notification> notification,
+            final NormalizedNodeStreamWriter domWriter) {
+        return root.getNotification(notification).createWriter(domWriter);
     }
 
-    public DataContainerCodecContext<?> getCodecContextNode(final InstanceIdentifier<?> binding,
+    public DataContainerCodecContext<?,?> getCodecContextNode(final InstanceIdentifier<?> binding,
             final List<YangInstanceIdentifier.PathArgument> builder) {
-        DataContainerCodecContext<?> currentNode = root;
-        for (InstanceIdentifier.PathArgument bindingArg : binding.getPathArguments()) {
-            currentNode = currentNode.getIdentifierChild(bindingArg, builder);
+        DataContainerCodecContext<?,?> currentNode = root;
+        for (final InstanceIdentifier.PathArgument bindingArg : binding.getPathArguments()) {
+            currentNode = currentNode.bindingPathArgumentChild(bindingArg, builder);
+            Preconditions.checkArgument(currentNode != null, "Supplied Instance Identifier %s is not valid.",binding);
         }
         return currentNode;
     }
@@ -119,16 +140,17 @@ class BindingCodecContext implements CodecContextFactory, Immutable {
      * @param bindingArguments Collection for traversed path arguments
      * @return Codec for target node, or @null if the node does not have a
      *         binding representation (choice, case, leaf).
+     *
      */
-    @Nullable NodeCodecContext getCodecContextNode(final @Nonnull YangInstanceIdentifier dom,
+    @Nullable NodeCodecContext<?> getCodecContextNode(final @Nonnull YangInstanceIdentifier dom,
             final @Nonnull Collection<InstanceIdentifier.PathArgument> bindingArguments) {
-        NodeCodecContext currentNode = root;
-        ListNodeCodecContext currentList = null;
+        NodeCodecContext<?> currentNode = root;
+        ListNodeCodecContext<?> currentList = null;
 
-        for (YangInstanceIdentifier.PathArgument domArg : dom.getPathArguments()) {
-            Preconditions.checkArgument(currentNode instanceof DataContainerCodecContext<?>, "Unexpected child of non-container node %s", currentNode);
-            final DataContainerCodecContext<?> previous = (DataContainerCodecContext<?>) currentNode;
-            final NodeCodecContext nextNode = previous.getYangIdentifierChild(domArg);
+        for (final YangInstanceIdentifier.PathArgument domArg : dom.getPathArguments()) {
+            Preconditions.checkArgument(currentNode instanceof DataContainerCodecContext<?,?>, "Unexpected child of non-container node %s", currentNode);
+            final DataContainerCodecContext<?,?> previous = (DataContainerCodecContext<?,?>) currentNode;
+            final NodeCodecContext<?> nextNode = previous.yangPathArgumentChild(domArg);
 
             /*
              * List representation in YANG Instance Identifier consists of two
@@ -149,13 +171,13 @@ class BindingCodecContext implements CodecContextFactory, Immutable {
             } else if (nextNode instanceof ListNodeCodecContext) {
                 // We enter list, we do not update current Node yet,
                 // since we need to verify
-                currentList = (ListNodeCodecContext) nextNode;
+                currentList = (ListNodeCodecContext<?>) nextNode;
             } else if (nextNode instanceof ChoiceNodeCodecContext) {
                 // We do not add path argument for choice, since
                 // it is not supported by binding instance identifier.
                 currentNode = nextNode;
-            } else if (nextNode instanceof DataContainerCodecContext<?>) {
-                bindingArguments.add(((DataContainerCodecContext<?>) nextNode).getBindingPathArgument(domArg));
+            } else if (nextNode instanceof DataContainerCodecContext<?,?>) {
+                bindingArguments.add(((DataContainerCodecContext<?,?>) nextNode).getBindingPathArgument(domArg));
                 currentNode = nextNode;
             } else if (nextNode instanceof LeafNodeCodecContext) {
                 LOG.debug("Instance identifier referencing a leaf is not representable (%s)", dom);
@@ -181,11 +203,19 @@ class BindingCodecContext implements CodecContextFactory, Immutable {
         return currentNode;
     }
 
+    NotificationCodecContext<?> getNotificationContext(final SchemaPath notification) {
+        return root.getNotification(notification);
+    }
+
+    ContainerNodeCodecContext<?> getRpcDataContext(final SchemaPath path) {
+        return root.getRpc(path);
+    }
+
     @Override
-    public ImmutableMap<String, LeafNodeCodecContext> getLeafNodes(final Class<?> parentClass,
+    public ImmutableMap<String, LeafNodeCodecContext<?>> getLeafNodes(final Class<?> parentClass,
             final DataNodeContainer childSchema) {
-        HashMap<String, DataSchemaNode> getterToLeafSchema = new HashMap<>();
-        for (DataSchemaNode leaf : childSchema.getChildNodes()) {
+        final HashMap<String, DataSchemaNode> getterToLeafSchema = new HashMap<>();
+        for (final DataSchemaNode leaf : childSchema.getChildNodes()) {
             final TypeDefinition<?> typeDef;
             if (leaf instanceof LeafSchemaNode) {
                 typeDef = ((LeafSchemaNode) leaf).getType();
@@ -195,35 +225,35 @@ class BindingCodecContext implements CodecContextFactory, Immutable {
                 continue;
             }
 
-            String getterName = getGetterName(leaf.getQName(), typeDef);
+            final String getterName = getGetterName(leaf.getQName(), typeDef);
             getterToLeafSchema.put(getterName, leaf);
         }
         return getLeafNodesUsingReflection(parentClass, getterToLeafSchema);
     }
 
     private String getGetterName(final QName qName, TypeDefinition<?> typeDef) {
-        String suffix = BindingMapping.getClassName(qName);
+        final String suffix = BindingMapping.getClassName(qName);
 
         while (typeDef.getBaseType() != null) {
             typeDef = typeDef.getBaseType();
         }
-        if (typeDef instanceof BooleanTypeDefinition) {
+        if (typeDef instanceof BooleanTypeDefinition || typeDef instanceof EmptyTypeDefinition) {
             return "is" + suffix;
         }
         return GETTER_PREFIX + suffix;
     }
 
-    private ImmutableMap<String, LeafNodeCodecContext> getLeafNodesUsingReflection(final Class<?> parentClass,
+    private ImmutableMap<String, LeafNodeCodecContext<?>> getLeafNodesUsingReflection(final Class<?> parentClass,
             final Map<String, DataSchemaNode> getterToLeafSchema) {
-        Map<String, LeafNodeCodecContext> leaves = new HashMap<>();
-        for (Method method : parentClass.getMethods()) {
+        final Map<String, LeafNodeCodecContext<?>> leaves = new HashMap<>();
+        for (final Method method : parentClass.getMethods()) {
             if (method.getParameterTypes().length == 0) {
-                DataSchemaNode schema = getterToLeafSchema.get(method.getName());
+                final DataSchemaNode schema = getterToLeafSchema.get(method.getName());
                 final Class<?> valueType;
                 if (schema instanceof LeafSchemaNode) {
                     valueType = method.getReturnType();
                 } else if (schema instanceof LeafListSchemaNode) {
-                    Type genericType = ClassLoaderUtils.getFirstGenericParameter(method.getGenericReturnType());
+                    final Type genericType = ClassLoaderUtils.getFirstGenericParameter(method.getGenericReturnType());
 
                     if (genericType instanceof Class<?>) {
                         valueType = (Class<?>) genericType;
@@ -235,17 +265,23 @@ class BindingCodecContext implements CodecContextFactory, Immutable {
                 } else {
                     continue; // We do not have schema for leaf, so we will ignore it (eg. getClass, getImplementedInterface).
                 }
-                Codec<Object, Object> codec = getCodec(valueType, schema);
-                final LeafNodeCodecContext leafNode = new LeafNodeCodecContext(schema, codec, method);
+                final Codec<Object, Object> codec = getCodec(valueType, schema);
+                final LeafNodeCodecContext<?> leafNode = new LeafNodeCodecContext<>(schema, codec, method);
                 leaves.put(schema.getQName().getLocalName(), leafNode);
             }
         }
         return ImmutableMap.copyOf(leaves);
     }
 
-
-
     private Codec<Object, Object> getCodec(final Class<?> valueType, final DataSchemaNode schema) {
+        final TypeDefinition<?> instantiatedType;
+        if (schema instanceof LeafSchemaNode) {
+            instantiatedType = ((LeafSchemaNode) schema).getType();
+        } else if (schema instanceof LeafListSchemaNode) {
+            instantiatedType = ((LeafListSchemaNode) schema).getType();
+        } else {
+            throw new IllegalArgumentException("Unsupported leaf node type " + schema.getClass());
+        }
         if (Class.class.equals(valueType)) {
             @SuppressWarnings({ "unchecked", "rawtypes" })
             final Codec<Object, Object> casted = (Codec) identityCodec;
@@ -254,18 +290,12 @@ class BindingCodecContext implements CodecContextFactory, Immutable {
             @SuppressWarnings({ "unchecked", "rawtypes" })
             final Codec<Object, Object> casted = (Codec) instanceIdentifierCodec;
             return casted;
-        } else if (BindingReflections.isBindingClass(valueType)) {
-            final TypeDefinition<?> instantiatedType;
-            if (schema instanceof LeafSchemaNode) {
-                instantiatedType = ((LeafSchemaNode) schema).getType();
-            } else if (schema instanceof LeafListSchemaNode) {
-                instantiatedType = ((LeafListSchemaNode) schema).getType();
-            } else {
-                instantiatedType = null;
-            }
-            if (instantiatedType != null) {
-                return getCodec(valueType, instantiatedType);
+        } else if (Boolean.class.equals(valueType)) {
+            if(instantiatedType instanceof EmptyTypeDefinition) {
+                return ValueTypeCodec.EMPTY_CODEC;
             }
+        } else if (BindingReflections.isBindingClass(valueType)) {
+                            return getCodec(valueType, instantiatedType);
         }
         return ValueTypeCodec.NOOP_CODEC;
     }
@@ -281,151 +311,48 @@ class BindingCodecContext implements CodecContextFactory, Immutable {
         } else if (rootType instanceof InstanceIdentifierTypeDefinition) {
             return ValueTypeCodec.encapsulatedValueCodecFor(valueType, instanceIdentifierCodec);
         } else if (rootType instanceof UnionTypeDefinition) {
-            Callable<UnionTypeCodec> loader = UnionTypeCodec.loader(valueType, (UnionTypeDefinition) rootType);
+            final Callable<UnionTypeCodec> loader = UnionTypeCodec.loader(valueType, (UnionTypeDefinition) rootType);
             try {
                 return loader.call();
-            } catch (Exception e) {
+            } catch (final Exception e) {
                 throw new IllegalStateException("Unable to load codec for " + valueType, e);
             }
+        } else if(rootType instanceof LeafrefTypeDefinition) {
+            final Entry<GeneratedType, Object> typeWithSchema = context.getTypeWithSchema(valueType);
+            final Object schema = typeWithSchema.getValue();
+            Preconditions.checkState(schema instanceof TypeDefinition<?>);
+            return getCodec(valueType, (TypeDefinition<?>) schema);
         }
         return ValueTypeCodec.getCodecFor(valueType, instantiatedType);
     }
 
-    private class InstanceIdentifierCodec implements Codec<YangInstanceIdentifier, InstanceIdentifier<?>> {
-
-        @Override
-        public YangInstanceIdentifier serialize(final InstanceIdentifier<?> input) {
-            List<YangInstanceIdentifier.PathArgument> domArgs = new ArrayList<>();
-            getCodecContextNode(input, domArgs);
-            return YangInstanceIdentifier.create(domArgs);
-        }
-
-        @Override
-        public InstanceIdentifier<?> deserialize(final YangInstanceIdentifier input) {
-            final List<InstanceIdentifier.PathArgument> builder = new ArrayList<>();
-            final NodeCodecContext codec = getCodecContextNode(input, builder);
-            return codec == null ? null : InstanceIdentifier.create(builder);
-        }
-    }
-
-    private class IdentityCodec implements Codec<QName, Class<?>> {
-
-        @Override
-        public Class<?> deserialize(final QName input) {
-            Preconditions.checkArgument(input != null, "Input must not be null.");
-            return context.getIdentityClass(input);
-        }
-
-        @Override
-        public QName serialize(final Class<?> input) {
-            Preconditions.checkArgument(BaseIdentity.class.isAssignableFrom(input));
-            return BindingReflections.findQName(input);
-        }
-    }
-
-    private static class ValueContext {
-
-        Method getter;
-        Codec<Object, Object> codec;
-
-        public ValueContext(final Class<?> identifier, final LeafNodeCodecContext leaf) {
-            final String getterName = GETTER_PREFIX
-                    + BindingMapping.getClassName(leaf.getDomPathArgument().getNodeType());
-            try {
-                getter = identifier.getMethod(getterName);
-            } catch (NoSuchMethodException | SecurityException e) {
-                throw new IllegalStateException(e);
-            }
-            codec = leaf.getValueCodec();
-        }
-
-        public Object getAndSerialize(final Object obj) {
-            try {
-                Object value = getter.invoke(obj);
-                Preconditions.checkArgument(value != null,
-                        "All keys must be specified for %s. Missing key is %s. Supplied key is %s",
-                        getter.getDeclaringClass(), getter.getName(), obj);
-                return codec.serialize(value);
-            } catch (IllegalAccessException | InvocationTargetException e) {
-                throw new IllegalArgumentException(e);
-            }
-        }
-
-        public Object deserialize(final Object obj) {
-            return codec.deserialize(obj);
-        }
-
-    }
-
-    private class IdentifiableItemCodec implements Codec<NodeIdentifierWithPredicates, IdentifiableItem<?, ?>> {
-
-        private final ImmutableSortedMap<QName, ValueContext> keyValueContexts;
-        private final ListSchemaNode schema;
-        private final Constructor<? extends Identifier<?>> constructor;
-        private final Class<?> identifiable;
-
-        public IdentifiableItemCodec(final ListSchemaNode schema, final Class<? extends Identifier<?>> keyClass,
-                final Class<?> identifiable, final Map<QName, ValueContext> keyValueContexts) {
-            this.schema = schema;
-            this.identifiable = identifiable;
-            this.keyValueContexts = ImmutableSortedMap.copyOf(keyValueContexts);
-            this.constructor = getConstructor(keyClass);
-        }
-
-        @Override
-        public IdentifiableItem<?, ?> deserialize(final NodeIdentifierWithPredicates input) {
-            ArrayList<Object> bindingValues = new ArrayList<>();
-
-            for(QName key: schema.getKeyDefinition()) {
-                Object yangValue = input.getKeyValues().get(key);
-                bindingValues.add(keyValueContexts.get(key).deserialize(yangValue));
-            }
-            try {
-                final Identifier<?> identifier = constructor.newInstance(bindingValues.toArray());
-                @SuppressWarnings({ "rawtypes", "unchecked" })
-                final IdentifiableItem identifiableItem = new IdentifiableItem(identifiable, identifier);
-                return identifiableItem;
-            } catch (InstantiationException | IllegalAccessException | InvocationTargetException e) {
-                throw new IllegalStateException(e);
-            }
-        }
-
-        @Override
-        public NodeIdentifierWithPredicates serialize(final IdentifiableItem<?, ?> input) {
-            Object value = input.getKey();
-
-            Map<QName, Object> values = new HashMap<>();
-            for (Entry<QName, ValueContext> valueCtx : keyValueContexts.entrySet()) {
-                values.put(valueCtx.getKey(), valueCtx.getValue().getAndSerialize(value));
-            }
-            return new NodeIdentifierWithPredicates(schema.getQName(), values);
-        }
-
-    }
-
-    @SuppressWarnings("unchecked")
-    private static Constructor<? extends Identifier<?>> getConstructor(final Class<? extends Identifier<?>> clazz) {
-        for (@SuppressWarnings("rawtypes") Constructor constr : clazz.getConstructors()) {
-            Class<?>[] parameters = constr.getParameterTypes();
-            if (!clazz.equals(parameters[0])) {
-                // It is not copy constructor;
-                return constr;
-            }
-        }
-        throw new IllegalArgumentException("Supplied class " + clazz + "does not have required constructor.");
-    }
-
     @Override
     public Codec<NodeIdentifierWithPredicates, IdentifiableItem<?, ?>> getPathArgumentCodec(final Class<?> listClz,
             final ListSchemaNode schema) {
-        Class<? extends Identifier<?>> identifier = ClassLoaderUtils.findFirstGenericArgument(listClz,
+        final Class<? extends Identifier<?>> identifier = ClassLoaderUtils.findFirstGenericArgument(listClz,
                 Identifiable.class);
-        Map<QName, ValueContext> valueCtx = new HashMap<>();
-        for (LeafNodeCodecContext leaf : getLeafNodes(identifier, schema).values()) {
-            QName name = leaf.getDomPathArgument().getNodeType();
+        final Map<QName, ValueContext> valueCtx = new HashMap<>();
+        for (final LeafNodeCodecContext<?> leaf : getLeafNodes(identifier, schema).values()) {
+            final QName name = leaf.getDomPathArgument().getNodeType();
             valueCtx.put(name, new ValueContext(identifier, leaf));
         }
         return new IdentifiableItemCodec(schema, identifier, listClz, valueCtx);
     }
 
+    @SuppressWarnings("unchecked")
+    @Override
+    public <T extends DataObject> BindingCodecTreeNode<T> getSubtreeCodec(InstanceIdentifier<T> path) {
+        // TODO Do we need defensive check here?
+        return (BindingCodecTreeNode<T>) getCodecContextNode(path, null);
+    }
+
+    @Override
+    public BindingCodecTreeNode<?> getSubtreeCodec(YangInstanceIdentifier path) {
+        return getCodecContextNode(path, null);
+    }
+
+    @Override
+    public BindingCodecTreeNode<?> getSubtreeCodec(SchemaPath path) {
+        throw new UnsupportedOperationException("Not implemented yet.");
+    }
 }