binding2/mdsal-binding2-dom-codec/src/main/java/org/opendaylight/mdsal/binding/javav2/dom/codec/impl/context/base/DataContainerCodecPrototype.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
   9 package org.opendaylight.mdsal.binding.javav2.dom.codec.impl.context.base;
  10
  11 import com.google.common.annotations.Beta;
  12 import com.google.common.base.Preconditions;
  13 import com.google.common.collect.Iterables;
  14 import javax.annotation.Nonnull;
  15 import javax.annotation.concurrent.GuardedBy;
  16 import org.opendaylight.mdsal.binding.javav2.dom.codec.impl.context.base.NodeCodecContext.CodecContextFactory;
  17 import org.opendaylight.mdsal.binding.javav2.spec.base.Item;
  18 import org.opendaylight.mdsal.binding.javav2.spec.base.TreeRoot;
  19 import org.opendaylight.yangtools.yang.common.QNameModule;
  20 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
  21 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.AugmentationIdentifier;
  22 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.NodeIdentifier;
  23 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.PathArgument;
  24 import org.opendaylight.yangtools.yang.model.api.AugmentationSchema;
  25 import org.opendaylight.yangtools.yang.model.api.ChoiceSchemaNode;
  26 import org.opendaylight.yangtools.yang.model.api.DataSchemaNode;
  27 import org.opendaylight.yangtools.yang.model.api.NotificationDefinition;
  28 import org.opendaylight.yangtools.yang.model.api.SchemaContext;
  29 import sun.reflect.generics.reflectiveObjects.NotImplementedException;
  30
  31 @Beta
  32 final class DataContainerCodecPrototype<T> implements NodeContextSupplier {
  33
  34     private final T schema;
  35     private final QNameModule namespace;
  36     private final CodecContextFactory factory;
  37     private final Class<?> bindingClass;
  38     private final Item<?> bindingArg;
  39     private final YangInstanceIdentifier.PathArgument yangArg;
  40     private volatile DataContainerCodecContext<?,T> instance = null;
  41
  42     @SuppressWarnings({"rawtypes", "unchecked"})
  43     private DataContainerCodecPrototype(final Class<?> cls, final YangInstanceIdentifier.PathArgument arg, final T nodeSchema,
  44             final CodecContextFactory factory) {
  45         this.bindingClass = Preconditions.checkNotNull(cls);
  46         this.yangArg = Preconditions.checkNotNull(arg);
  47         this.schema = Preconditions.checkNotNull(nodeSchema);
  48         this.factory = Preconditions.checkNotNull(factory);
  49
  50         this.bindingArg = new Item(bindingClass);
  51
  52         if (arg instanceof AugmentationIdentifier) {
  53             this.namespace = Iterables.getFirst(((AugmentationIdentifier) arg).getPossibleChildNames(), null).getModule();
  54         } else {
  55             this.namespace = arg.getNodeType().getModule();
  56         }
  57     }
  58
  59     @SuppressWarnings({ "unchecked", "rawtypes" })
  60     static <T extends DataSchemaNode> DataContainerCodecPrototype<T> from(final Class<?> cls, final T schema,
  61             final CodecContextFactory factory) {
  62         return new DataContainerCodecPrototype(cls, NodeIdentifier.create(schema.getQName()), schema, factory);
  63     }
  64
  65     static DataContainerCodecPrototype<SchemaContext> rootPrototype(final CodecContextFactory factory) {
  66         final SchemaContext schema = factory.getRuntimeContext().getSchemaContext();
  67         final NodeIdentifier arg = NodeIdentifier.create(schema.getQName());
  68         return new DataContainerCodecPrototype<>(TreeRoot.class, arg, schema, factory);
  69     }
  70
  71     @SuppressWarnings({ "rawtypes", "unchecked" })
  72     static DataContainerCodecPrototype<?> from(final Class<?> augClass, final AugmentationIdentifier arg,
  73                                                final AugmentationSchema schema, final CodecContextFactory factory) {
  74         return new DataContainerCodecPrototype(augClass, arg, schema, factory);
  75     }
  76
  77     static DataContainerCodecPrototype<NotificationDefinition> from(final Class<?> augClass, final NotificationDefinition schema, final CodecContextFactory factory) {
  78         final PathArgument arg = NodeIdentifier.create(schema.getQName());
  79         return new DataContainerCodecPrototype<>(augClass, arg, schema, factory);
  80     }
  81
  82     protected T getSchema() {
  83         return schema;
  84     }
  85
  86     protected QNameModule getNamespace() {
  87         return namespace;
  88     }
  89
  90     protected CodecContextFactory getFactory() {
  91         return factory;
  92     }
  93
  94     protected Class<?> getBindingClass() {
  95         return bindingClass;
  96     }
  97
  98     protected Item<?> getBindingArg() {
  99         return bindingArg;
 100     }
 101
 102     protected YangInstanceIdentifier.PathArgument getYangArg() {
 103         return yangArg;
 104     }
 105
 106     @Nonnull
 107     @Override
 108     public DataContainerCodecContext<?,T> get() {
 109         DataContainerCodecContext<?,T> tmp = instance;
 110         if (tmp == null) {
 111             synchronized (this) {
 112                 tmp = instance;
 113                 if (tmp == null) {
 114                     tmp = createInstance();
 115                     instance = tmp;
 116                 }
 117             }
 118         }
 119
 120         return tmp;
 121     }
 122
 123     @GuardedBy("this")
 124     @SuppressWarnings({"rawtypes", "unchecked"})
 125     protected DataContainerCodecContext<?, T> createInstance() {
 126         //TODO - implement it
 127         throw new NotImplementedException();
 128     }
 129
 130     boolean isChoice() {
 131         return schema instanceof ChoiceSchemaNode;
 132     }
 133 }