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.AugmentationNodeContext;
  17 import org.opendaylight.mdsal.binding.javav2.dom.codec.impl.context.CaseNodeCodecContext;
  18 import org.opendaylight.mdsal.binding.javav2.dom.codec.impl.context.ChoiceNodeCodecContext;
  19 import org.opendaylight.mdsal.binding.javav2.dom.codec.impl.context.ContainerNodeCodecContext;
  20 import org.opendaylight.mdsal.binding.javav2.dom.codec.impl.context.KeyedListNodeCodecContext;
  21 import org.opendaylight.mdsal.binding.javav2.dom.codec.impl.context.ListNodeCodecContext;
  22 import org.opendaylight.mdsal.binding.javav2.dom.codec.impl.context.base.NodeCodecContext.CodecContextFactory;
  23 import org.opendaylight.mdsal.binding.javav2.spec.base.Item;
  24 import org.opendaylight.mdsal.binding.javav2.spec.base.TreeRoot;
  25 import org.opendaylight.yangtools.concepts.Identifiable;
  26 import org.opendaylight.yangtools.yang.common.QNameModule;
  27 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
  28 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.AugmentationIdentifier;
  29 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.NodeIdentifier;
  30 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.PathArgument;
  31 import org.opendaylight.yangtools.yang.model.api.AugmentationSchema;
  32 import org.opendaylight.yangtools.yang.model.api.ChoiceCaseNode;
  33 import org.opendaylight.yangtools.yang.model.api.ChoiceSchemaNode;
  34 import org.opendaylight.yangtools.yang.model.api.ContainerSchemaNode;
  35 import org.opendaylight.yangtools.yang.model.api.DataSchemaNode;
  36 import org.opendaylight.yangtools.yang.model.api.ListSchemaNode;
  37 import org.opendaylight.yangtools.yang.model.api.NotificationDefinition;
  38 import org.opendaylight.yangtools.yang.model.api.SchemaContext;
  39
  40 @Beta
  41 public final class DataContainerCodecPrototype<T> implements NodeContextSupplier {
  42
  43     private final T schema;
  44     private final QNameModule namespace;
  45     private final CodecContextFactory factory;
  46     private final Class<?> bindingClass;
  47     private final Item<?> bindingArg;
  48     private final YangInstanceIdentifier.PathArgument yangArg;
  49     private volatile DataContainerCodecContext<?,T> instance = null;
  50
  51     @SuppressWarnings({"rawtypes", "unchecked"})
  52     private DataContainerCodecPrototype(final Class<?> cls, final YangInstanceIdentifier.PathArgument arg,
  53             final T nodeSchema, final CodecContextFactory factory) {
  54         this.bindingClass = Preconditions.checkNotNull(cls);
  55         this.yangArg = Preconditions.checkNotNull(arg);
  56         this.schema = Preconditions.checkNotNull(nodeSchema);
  57         this.factory = Preconditions.checkNotNull(factory);
  58
  59         this.bindingArg = new Item(bindingClass);
  60
  61         if (arg instanceof AugmentationIdentifier) {
  62             this.namespace = Iterables.getFirst(
  63                 ((AugmentationIdentifier) arg).getPossibleChildNames(), null).getModule();
  64         } else {
  65             this.namespace = arg.getNodeType().getModule();
  66         }
  67     }
  68
  69     @SuppressWarnings({ "unchecked", "rawtypes" })
  70     public static <T extends DataSchemaNode> DataContainerCodecPrototype<T> from(final Class<?> cls, final T schema,
  71             final CodecContextFactory factory) {
  72         return new DataContainerCodecPrototype(cls, NodeIdentifier.create(schema.getQName()), schema, factory);
  73     }
  74
  75     @SuppressWarnings({ "rawtypes", "unchecked" })
  76     static DataContainerCodecPrototype<?> from(final Class<?> augClass, final AugmentationIdentifier arg,
  77                                                final AugmentationSchema schema, final CodecContextFactory factory) {
  78         return new DataContainerCodecPrototype(augClass, arg, schema, factory);
  79     }
  80
  81
  82     public static DataContainerCodecPrototype<NotificationDefinition> from(final Class<?> augClass,
  83             final NotificationDefinition schema, final CodecContextFactory factory) {
  84         final PathArgument arg = NodeIdentifier.create(schema.getQName());
  85         return new DataContainerCodecPrototype<>(augClass, arg, schema, factory);
  86     }
  87
  88     public static DataContainerCodecPrototype<SchemaContext> rootPrototype(final CodecContextFactory factory) {
  89         final SchemaContext schema = factory.getRuntimeContext().getSchemaContext();
  90         final NodeIdentifier arg = NodeIdentifier.create(schema.getQName());
  91         return new DataContainerCodecPrototype<>(TreeRoot.class, arg, schema, factory);
  92     }
  93
  94     public T getSchema() {
  95         return schema;
  96     }
  97
  98     protected QNameModule getNamespace() {
  99         return namespace;
 100     }
 101
 102     protected CodecContextFactory getFactory() {
 103         return factory;
 104     }
 105
 106     public Class<?> getBindingClass() {
 107         return bindingClass;
 108     }
 109
 110     protected Item<?> getBindingArg() {
 111         return bindingArg;
 112     }
 113
 114     protected YangInstanceIdentifier.PathArgument getYangArg() {
 115         return yangArg;
 116     }
 117
 118     @Nonnull
 119     @Override
 120     public DataContainerCodecContext<?,T> get() {
 121         DataContainerCodecContext<?,T> tmp = instance;
 122         if (tmp == null) {
 123             synchronized (this) {
 124                 tmp = instance;
 125                 if (tmp == null) {
 126                     tmp = createInstance();
 127                     instance = tmp;
 128                 }
 129             }
 130         }
 131
 132         return tmp;
 133     }
 134
 135     @GuardedBy("this")
 136     @SuppressWarnings({"rawtypes", "unchecked"})
 137     protected DataContainerCodecContext<?, T> createInstance() {
 138         if (schema instanceof ContainerSchemaNode) {
 139             return new ContainerNodeCodecContext(this);
 140         } else if (schema instanceof ListSchemaNode) {
 141             if (Identifiable.class.isAssignableFrom(getBindingClass())) {
 142                 return new KeyedListNodeCodecContext(this);
 143             } else {
 144                 return new ListNodeCodecContext(this);
 145             }
 146         } else if (schema instanceof ChoiceSchemaNode) {
 147             return new ChoiceNodeCodecContext(this);
 148         } else if (schema instanceof AugmentationSchema) {
 149             return new AugmentationNodeContext(this);
 150         } else if (schema instanceof ChoiceCaseNode) {
 151             return new CaseNodeCodecContext(this);
 152         }
 153         throw new IllegalArgumentException("Unsupported type " + bindingClass + " " + schema);
 154     }
 155
 156     boolean isChoice() {
 157         return schema instanceof ChoiceSchemaNode;
 158     }
 159 }