code-generator/binding-data-codec/src/main/java/org/opendaylight/yangtools/binding/data/codec/impl/SchemaRootCodecContext.java

   1 /*
   2  * Copyright (c) 2014 Cisco Systems, Inc. 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.yangtools.binding.data.codec.impl;
   9
  10 import com.google.common.base.Optional;
  11 import com.google.common.base.Preconditions;
  12 import com.google.common.cache.CacheBuilder;
  13 import com.google.common.cache.CacheLoader;
  14 import com.google.common.cache.LoadingCache;
  15 import org.opendaylight.yangtools.util.ClassLoaderUtils;
  16 import org.opendaylight.yangtools.yang.binding.ChildOf;
  17 import org.opendaylight.yangtools.yang.binding.DataRoot;
  18 import org.opendaylight.yangtools.yang.binding.util.BindingReflections;
  19 import org.opendaylight.yangtools.yang.common.QName;
  20 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
  21 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
  22 import org.opendaylight.yangtools.yang.model.api.ChoiceNode;
  23 import org.opendaylight.yangtools.yang.model.api.DataNodeContainer;
  24 import org.opendaylight.yangtools.yang.model.api.DataSchemaNode;
  25 import org.opendaylight.yangtools.yang.model.api.SchemaContext;
  26
  27 class SchemaRootCodecContext extends DataContainerCodecContext<SchemaContext> {
  28
  29     private final LoadingCache<Class<?>, DataContainerCodecContext<?>> children = CacheBuilder.newBuilder().build(
  30             new CacheLoader<Class<?>, DataContainerCodecContext<?>>() {
  31                 @Override
  32                 public DataContainerCodecContext<?> load(final Class<?> key) {
  33                     Class<Object> parent = ClassLoaderUtils.findFirstGenericArgument(key, ChildOf.class);
  34                     Preconditions.checkArgument(DataRoot.class.isAssignableFrom(parent));
  35                     QName qname = BindingReflections.findQName(key);
  36                     DataSchemaNode childSchema = schema().getDataChildByName(qname);
  37                     return DataContainerCodecPrototype.from(key, childSchema, factory()).get();
  38                 }
  39             });
  40
  41     private SchemaRootCodecContext(final DataContainerCodecPrototype<SchemaContext> dataPrototype) {
  42         super(dataPrototype);
  43     }
  44
  45     /**
  46      * Creates RootNode from supplied CodecContextFactory.
  47      *
  48      * @param factory
  49      *            CodecContextFactory
  50      * @return
  51      */
  52     static SchemaRootCodecContext create(final CodecContextFactory factory) {
  53         DataContainerCodecPrototype<SchemaContext> prototype = DataContainerCodecPrototype.rootPrototype(factory);
  54         return new SchemaRootCodecContext(prototype);
  55     }
  56
  57     @Override
  58     protected DataContainerCodecContext<?> getStreamChild(final Class<?> childClass) {
  59         return children.getUnchecked(childClass);
  60     }
  61
  62     @Override
  63     protected Optional<DataContainerCodecContext<?>> getPossibleStreamChild(final Class<?> childClass) {
  64         throw new UnsupportedOperationException("Not supported");
  65     }
  66
  67     @Override
  68     protected YangInstanceIdentifier.PathArgument getDomPathArgument() {
  69         throw new UnsupportedOperationException();
  70     }
  71
  72     @Override
  73     protected NodeCodecContext getYangIdentifierChild(final YangInstanceIdentifier.PathArgument arg) {
  74         // FIXME: Optimize this
  75         QName childQName = arg.getNodeType();
  76         DataSchemaNode childSchema = schema().getDataChildByName(childQName);
  77         Preconditions.checkArgument(childSchema != null, "Argument %s is not valid child of %s", arg, schema());
  78         if (childSchema instanceof DataNodeContainer || childSchema instanceof ChoiceNode) {
  79             Class<?> childCls = factory().getRuntimeContext().getClassForSchema(childSchema);
  80             DataContainerCodecContext<?> childNode = getStreamChild(childCls);
  81             return childNode;
  82         } else {
  83             throw new UnsupportedOperationException();
  84         }
  85     }
  86
  87     @Override
  88     protected Object dataFromNormalizedNode(final NormalizedNode<?, ?> normalizedNode) {
  89         throw new UnsupportedOperationException("Could not create Binding data representation for root");
  90     }
  91 }