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     private DataContainerCodecPrototype(final Class<?> cls, final YangInstanceIdentifier.PathArgument arg, final T nodeSchema,
  41             final CodecContextFactory factory) {
  42         super();
  43         this.bindingClass = cls;
  44         this.yangArg = arg;
  45         this.schema = nodeSchema;
  46         this.factory = factory;
  47         this.bindingArg = new InstanceIdentifier.Item(bindingClass);
  48
  49         if (arg instanceof AugmentationIdentifier) {
  50             this.namespace = Iterables.getFirst(((AugmentationIdentifier) arg).getPossibleChildNames(), null).getModule();
  51         } else {
  52             this.namespace = arg.getNodeType().getModule();
  53         }
  54     }
  55
  56     private DataContainerCodecPrototype(final Class<?> cls, final YangInstanceIdentifier.PathArgument arg, final T nodeSchema,
  57             final CodecContextFactory factory,final DataContainerCodecContext<T> instance) {
  58         super();
  59         this.yangArg = arg;
  60         this.schema = nodeSchema;
  61         this.factory = factory;
  62         this.namespace = arg.getNodeType().getModule();
  63         this.bindingClass = cls;
  64         this.bindingArg = new InstanceIdentifier.Item(bindingClass);
  65         this.instance = instance;
  66     }
  67
  68     @SuppressWarnings({ "unchecked", "rawtypes" })
  69     static <T extends DataSchemaNode> DataContainerCodecPrototype<T> from(final Class<?> cls, final T schema,
  70             final CodecContextFactory factory) {
  71         final NodeIdentifier arg = new NodeIdentifier(schema.getQName());
  72         return new DataContainerCodecPrototype(cls, arg, schema, factory);
  73     }
  74
  75     static DataContainerCodecPrototype<SchemaContext> rootPrototype(final CodecContextFactory factory) {
  76         final SchemaContext schema = factory.getRuntimeContext().getSchemaContext();
  77         final NodeIdentifier arg = new NodeIdentifier(schema.getQName());
  78         return new DataContainerCodecPrototype<SchemaContext>(DataRoot.class, arg, schema, factory);
  79     }
  80
  81
  82     @SuppressWarnings({ "rawtypes", "unchecked" })
  83     static DataContainerCodecPrototype<?> from(final Class<?> augClass, final AugmentationIdentifier arg,
  84             final AugmentationSchema schema, final CodecContextFactory factory) {
  85         return new DataContainerCodecPrototype(augClass, arg, schema, factory);
  86     }
  87
  88     static DataContainerCodecPrototype<NotificationDefinition> from(final Class<?> augClass, final NotificationDefinition schema, final CodecContextFactory factory) {
  89         final PathArgument arg = new NodeIdentifier(schema.getQName());
  90         return new DataContainerCodecPrototype<NotificationDefinition>(augClass,arg, schema, factory);
  91     }
  92
  93     protected final T getSchema() {
  94         return schema;
  95     }
  96
  97     protected final QNameModule getNamespace() {
  98         return namespace;
  99     }
 100
 101     protected final CodecContextFactory getFactory() {
 102         return factory;
 103     }
 104
 105     protected final Class<?> getBindingClass() {
 106         return bindingClass;
 107     }
 108
 109     protected final InstanceIdentifier.Item<?> getBindingArg() {
 110         return bindingArg;
 111     }
 112
 113     protected final YangInstanceIdentifier.PathArgument getYangArg() {
 114         return yangArg;
 115     }
 116
 117     @Override
 118     public DataContainerCodecContext<T> get() {
 119         DataContainerCodecContext<T> tmp = instance;
 120         if (tmp == null) {
 121             synchronized (this) {
 122                 tmp = instance;
 123                 if (tmp == null) {
 124                     tmp = createInstance();
 125                     instance = tmp;
 126                 }
 127             }
 128         }
 129
 130         return tmp;
 131     }
 132
 133     @GuardedBy("this")
 134     @SuppressWarnings({ "rawtypes", "unchecked" })
 135     private DataContainerCodecContext createInstance() {
 136         // FIXME: make protected abstract
 137         if (schema instanceof ContainerSchemaNode) {
 138             return new ContainerNodeCodecContext((DataContainerCodecPrototype) this);
 139         } else if (schema instanceof ListSchemaNode) {
 140             if (Identifiable.class.isAssignableFrom(getBindingClass())) {
 141                 return new KeyedListNodeCodecContext((DataContainerCodecPrototype) this);
 142             } else {
 143                 return new ListNodeCodecContext((DataContainerCodecPrototype) this);
 144             }
 145         } else if (schema instanceof ChoiceSchemaNode) {
 146             return new ChoiceNodeCodecContext((DataContainerCodecPrototype) this);
 147         } else if (schema instanceof AugmentationSchema) {
 148             return new AugmentationNodeContext((DataContainerCodecPrototype) this);
 149         } else if (schema instanceof ChoiceCaseNode) {
 150             return new CaseNodeCodecContext((DataContainerCodecPrototype) this);
 151         }
 152         throw new IllegalArgumentException("Unsupported type " + bindingClass + " " + schema);
 153     }
 154
 155     boolean isChoice() {
 156         return schema instanceof ChoiceSchemaNode;
 157     }
 158 }