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 static java.util.Objects.requireNonNull;
  12
  13 import com.google.common.annotations.Beta;
  14 import com.google.common.collect.Iterables;
  15 import javax.annotation.Nonnull;
  16 import javax.annotation.concurrent.GuardedBy;
  17 import org.opendaylight.mdsal.binding.javav2.dom.codec.impl.context.AugmentationNodeContext;
  18 import org.opendaylight.mdsal.binding.javav2.dom.codec.impl.context.CaseNodeCodecContext;
  19 import org.opendaylight.mdsal.binding.javav2.dom.codec.impl.context.ChoiceNodeCodecContext;
  20 import org.opendaylight.mdsal.binding.javav2.dom.codec.impl.context.ContainerNodeCodecContext;
  21 import org.opendaylight.mdsal.binding.javav2.dom.codec.impl.context.KeyedListNodeCodecContext;
  22 import org.opendaylight.mdsal.binding.javav2.dom.codec.impl.context.ListNodeCodecContext;
  23 import org.opendaylight.mdsal.binding.javav2.dom.codec.impl.context.base.NodeCodecContext.CodecContextFactory;
  24 import org.opendaylight.mdsal.binding.javav2.spec.base.Item;
  25 import org.opendaylight.mdsal.binding.javav2.spec.base.TreeRoot;
  26 import org.opendaylight.yangtools.concepts.Identifiable;
  27 import org.opendaylight.yangtools.yang.common.QNameModule;
  28 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
  29 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.AugmentationIdentifier;
  30 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.NodeIdentifier;
  31 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.PathArgument;
  32 import org.opendaylight.yangtools.yang.model.api.AugmentationSchemaNode;
  33 import org.opendaylight.yangtools.yang.model.api.CaseSchemaNode;
  34 import org.opendaylight.yangtools.yang.model.api.ChoiceSchemaNode;
  35 import org.opendaylight.yangtools.yang.model.api.ContainerSchemaNode;
  36 import org.opendaylight.yangtools.yang.model.api.DataSchemaNode;
  37 import org.opendaylight.yangtools.yang.model.api.ListSchemaNode;
  38 import org.opendaylight.yangtools.yang.model.api.NotificationDefinition;
  39 import org.opendaylight.yangtools.yang.model.api.SchemaContext;
  40
  41 @Beta
  42 public final class DataContainerCodecPrototype<T> implements NodeContextSupplier {
  43
  44     private final T schema;
  45     private final QNameModule namespace;
  46     private final CodecContextFactory factory;
  47     private final Class<?> bindingClass;
  48     private final Item<?> bindingArg;
  49     private final YangInstanceIdentifier.PathArgument yangArg;
  50     private volatile DataContainerCodecContext<?,T> instance = null;
  51
  52     @SuppressWarnings({"rawtypes", "unchecked"})
  53     private DataContainerCodecPrototype(final Class<?> cls, final YangInstanceIdentifier.PathArgument arg,
  54             final T nodeSchema, final CodecContextFactory factory) {
  55         this.bindingClass = requireNonNull(cls);
  56         this.yangArg = requireNonNull(arg);
  57         this.schema = requireNonNull(nodeSchema);
  58         this.factory = requireNonNull(factory);
  59
  60         this.bindingArg = new Item(bindingClass);
  61
  62         if (arg instanceof AugmentationIdentifier) {
  63             this.namespace = Iterables.getFirst(
  64                 ((AugmentationIdentifier) arg).getPossibleChildNames(), null).getModule();
  65         } else {
  66             this.namespace = arg.getNodeType().getModule();
  67         }
  68     }
  69
  70     @SuppressWarnings({ "unchecked", "rawtypes" })
  71     public static <T extends DataSchemaNode> DataContainerCodecPrototype<T> from(final Class<?> cls, final T schema,
  72             final CodecContextFactory factory) {
  73         return new DataContainerCodecPrototype(cls, NodeIdentifier.create(schema.getQName()), schema, factory);
  74     }
  75
  76     @SuppressWarnings({ "rawtypes", "unchecked" })
  77     static DataContainerCodecPrototype<?> from(final Class<?> augClass, final AugmentationIdentifier arg,
  78                                                final AugmentationSchemaNode schema, final CodecContextFactory factory) {
  79         return new DataContainerCodecPrototype(augClass, arg, schema, factory);
  80     }
  81
  82
  83     public static DataContainerCodecPrototype<NotificationDefinition> from(final Class<?> augClass,
  84             final NotificationDefinition schema, final CodecContextFactory factory) {
  85         final PathArgument arg = NodeIdentifier.create(schema.getQName());
  86         return new DataContainerCodecPrototype<>(augClass, arg, schema, factory);
  87     }
  88
  89     public static DataContainerCodecPrototype<SchemaContext> rootPrototype(final CodecContextFactory factory) {
  90         final SchemaContext schema = factory.getRuntimeContext().getSchemaContext();
  91         final NodeIdentifier arg = NodeIdentifier.create(schema.getQName());
  92         return new DataContainerCodecPrototype<>(TreeRoot.class, arg, schema, factory);
  93     }
  94
  95     public T getSchema() {
  96         return schema;
  97     }
  98
  99     protected QNameModule getNamespace() {
 100         return namespace;
 101     }
 102
 103     protected CodecContextFactory getFactory() {
 104         return factory;
 105     }
 106
 107     public Class<?> getBindingClass() {
 108         return bindingClass;
 109     }
 110
 111     protected Item<?> getBindingArg() {
 112         return bindingArg;
 113     }
 114
 115     protected YangInstanceIdentifier.PathArgument getYangArg() {
 116         return yangArg;
 117     }
 118
 119     @Nonnull
 120     @Override
 121     public DataContainerCodecContext<?,T> get() {
 122         DataContainerCodecContext<?,T> tmp = instance;
 123         if (tmp == null) {
 124             synchronized (this) {
 125                 tmp = instance;
 126                 if (tmp == null) {
 127                     tmp = createInstance();
 128                     instance = tmp;
 129                 }
 130             }
 131         }
 132
 133         return tmp;
 134     }
 135
 136     @GuardedBy("this")
 137     @SuppressWarnings({"rawtypes", "unchecked"})
 138     protected DataContainerCodecContext<?, T> createInstance() {
 139         if (schema instanceof ContainerSchemaNode) {
 140             return new ContainerNodeCodecContext(this);
 141         } else if (schema instanceof ListSchemaNode) {
 142             if (Identifiable.class.isAssignableFrom(getBindingClass())) {
 143                 return new KeyedListNodeCodecContext(this);
 144             } else {
 145                 return new ListNodeCodecContext(this);
 146             }
 147         } else if (schema instanceof ChoiceSchemaNode) {
 148             return new ChoiceNodeCodecContext(this);
 149         } else if (schema instanceof AugmentationSchemaNode) {
 150             return new AugmentationNodeContext(this);
 151         } else if (schema instanceof CaseSchemaNode) {
 152             return new CaseNodeCodecContext(this);
 153         }
 154         throw new IllegalArgumentException("Unsupported type " + bindingClass + " " + schema);
 155     }
 156
 157     boolean isChoice() {
 158         return schema instanceof ChoiceSchemaNode;
 159     }
 160 }