code-generator/binding-data-codec/src/main/java/org/opendaylight/yangtools/binding/data/codec/impl/DataContainerCodecPrototype.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.collect.Iterables;
  11 import javax.annotation.concurrent.GuardedBy;
  12 import org.opendaylight.yangtools.binding.data.codec.impl.NodeCodecContext.CodecContextFactory;
  13 import org.opendaylight.yangtools.yang.binding.DataRoot;
  14 import org.opendaylight.yangtools.yang.binding.Identifiable;
  15 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  16 import org.opendaylight.yangtools.yang.common.QNameModule;
  17 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
  18 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.AugmentationIdentifier;
  19 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.NodeIdentifier;
  20 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.PathArgument;
  21 import org.opendaylight.yangtools.yang.model.api.AugmentationSchema;
  22 import org.opendaylight.yangtools.yang.model.api.ChoiceCaseNode;
  23 import org.opendaylight.yangtools.yang.model.api.ChoiceSchemaNode;
  24 import org.opendaylight.yangtools.yang.model.api.ContainerSchemaNode;
  25 import org.opendaylight.yangtools.yang.model.api.DataSchemaNode;
  26 import org.opendaylight.yangtools.yang.model.api.ListSchemaNode;
  27 import org.opendaylight.yangtools.yang.model.api.NotificationDefinition;
  28 import org.opendaylight.yangtools.yang.model.api.SchemaContext;
  29
  30 final class DataContainerCodecPrototype<T> implements NodeContextSupplier {
  31
  32     private final T schema;
  33     private final QNameModule namespace;
  34     private final CodecContextFactory factory;
  35     private final Class<?> bindingClass;
  36     private final InstanceIdentifier.Item<?> bindingArg;
  37     private final YangInstanceIdentifier.PathArgument yangArg;
  38     private volatile DataContainerCodecContext<?,T> instance = null;
  39
  40     @SuppressWarnings({"rawtypes", "unchecked"})
  41     private DataContainerCodecPrototype(final Class<?> cls, final YangInstanceIdentifier.PathArgument arg, final T nodeSchema,
  42             final CodecContextFactory factory) {
  43         super();
  44         this.bindingClass = cls;
  45         this.yangArg = arg;
  46         this.schema = nodeSchema;
  47         this.factory = factory;
  48         this.bindingArg = new InstanceIdentifier.Item(bindingClass);
  49
  50         if (arg instanceof AugmentationIdentifier) {
  51             this.namespace = Iterables.getFirst(((AugmentationIdentifier) arg).getPossibleChildNames(), null).getModule();
  52         } else {
  53             this.namespace = arg.getNodeType().getModule();
  54         }
  55     }
  56
  57     @SuppressWarnings({"rawtypes", "unchecked"})
  58     private DataContainerCodecPrototype(final Class<?> cls, final YangInstanceIdentifier.PathArgument arg, final T nodeSchema,
  59             final CodecContextFactory factory,final DataContainerCodecContext<?,T> instance) {
  60         super();
  61         this.yangArg = arg;
  62         this.schema = nodeSchema;
  63         this.factory = factory;
  64         this.namespace = arg.getNodeType().getModule();
  65         this.bindingClass = cls;
  66         this.bindingArg = new InstanceIdentifier.Item(bindingClass);
  67         this.instance = instance;
  68     }
  69
  70     @SuppressWarnings({ "unchecked", "rawtypes" })
  71     static <T extends DataSchemaNode> DataContainerCodecPrototype<T> from(final Class<?> cls, final T schema,
  72             final CodecContextFactory factory) {
  73         final NodeIdentifier arg = new NodeIdentifier(schema.getQName());
  74         return new DataContainerCodecPrototype(cls, arg, schema, factory);
  75     }
  76
  77     static DataContainerCodecPrototype<SchemaContext> rootPrototype(final CodecContextFactory factory) {
  78         final SchemaContext schema = factory.getRuntimeContext().getSchemaContext();
  79         final NodeIdentifier arg = new NodeIdentifier(schema.getQName());
  80         return new DataContainerCodecPrototype<SchemaContext>(DataRoot.class, arg, schema, factory);
  81     }
  82
  83
  84     @SuppressWarnings({ "rawtypes", "unchecked" })
  85     static DataContainerCodecPrototype<?> from(final Class<?> augClass, final AugmentationIdentifier arg,
  86             final AugmentationSchema schema, final CodecContextFactory factory) {
  87         return new DataContainerCodecPrototype(augClass, arg, schema, factory);
  88     }
  89
  90     static DataContainerCodecPrototype<NotificationDefinition> from(final Class<?> augClass, final NotificationDefinition schema, final CodecContextFactory factory) {
  91         final PathArgument arg = new NodeIdentifier(schema.getQName());
  92         return new DataContainerCodecPrototype<NotificationDefinition>(augClass,arg, schema, factory);
  93     }
  94
  95     protected final T getSchema() {
  96         return schema;
  97     }
  98
  99     protected final QNameModule getNamespace() {
 100         return namespace;
 101     }
 102
 103     protected final CodecContextFactory getFactory() {
 104         return factory;
 105     }
 106
 107     protected final Class<?> getBindingClass() {
 108         return bindingClass;
 109     }
 110
 111     protected final InstanceIdentifier.Item<?> getBindingArg() {
 112         return bindingArg;
 113     }
 114
 115     protected final YangInstanceIdentifier.PathArgument getYangArg() {
 116         return yangArg;
 117     }
 118
 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     private DataContainerCodecContext<?,T> createInstance() {
 138         // FIXME: make protected abstract
 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 AugmentationSchema) {
 150             return new AugmentationNodeContext(this);
 151         } else if (schema instanceof ChoiceCaseNode) {
 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 }