binding2/mdsal-binding2-dom-codec/src/main/java/org/opendaylight/mdsal/binding/javav2/dom/codec/impl/serializer/ChoiceDispatchSerializer.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 package org.opendaylight.mdsal.binding.javav2.dom.codec.impl.serializer;
   9
  10 import com.google.common.annotations.Beta;
  11 import com.google.common.base.Preconditions;
  12 import java.io.IOException;
  13 import org.opendaylight.mdsal.binding.javav2.spec.base.Instantiable;
  14 import org.opendaylight.mdsal.binding.javav2.spec.base.Item;
  15 import org.opendaylight.mdsal.binding.javav2.spec.base.TreeNode;
  16 import org.opendaylight.mdsal.binding.javav2.spec.runtime.BindingStreamEventWriter;
  17 import org.opendaylight.mdsal.binding.javav2.spec.runtime.TreeNodeSerializer;
  18 import org.opendaylight.mdsal.binding.javav2.spec.runtime.TreeNodeSerializerImplementation;
  19 import org.opendaylight.mdsal.binding.javav2.spec.runtime.TreeNodeSerializerRegistry;
  20 import org.slf4j.Logger;
  21 import org.slf4j.LoggerFactory;
  22
  23 /**
  24  * Dispatch serializer, which emit DOM data from Binding v2 via stream writer.
  25  */
  26 @Beta
  27 public final class ChoiceDispatchSerializer implements TreeNodeSerializerImplementation {
  28
  29     private static final Logger LOG = LoggerFactory.getLogger(ChoiceDispatchSerializer.class);
  30
  31     @SuppressWarnings("rawtypes")
  32     private final Class choiceClass;
  33
  34     @SuppressWarnings("rawtypes")
  35     private ChoiceDispatchSerializer(final Class choiceClass) {
  36         this.choiceClass = Preconditions.checkNotNull(choiceClass);
  37     }
  38
  39     /**
  40      * Prepare instance of serializer from choice class.
  41      *
  42      * @param choiceClass
  43      *            - class choice
  44      * @return instance of serializer
  45      */
  46     public static ChoiceDispatchSerializer from(final Class<? extends Instantiable<?>> choiceClass) {
  47         return new ChoiceDispatchSerializer(choiceClass);
  48     }
  49
  50     @SuppressWarnings("unchecked")
  51     @Override
  52     public void serialize(final TreeNodeSerializerRegistry reg, final TreeNode obj,
  53             final BindingStreamEventWriter stream) throws IOException {
  54         @SuppressWarnings("rawtypes")
  55         final Class cazeClass = ((Instantiable<?>) obj).implementedInterface();
  56         stream.startChoiceNode(new Item<>(choiceClass), BindingStreamEventWriter.UNKNOWN_SIZE);
  57         final TreeNodeSerializer caseSerializer = reg.getSerializer(cazeClass);
  58         if (caseSerializer != null) {
  59             caseSerializer.serialize(obj, stream);
  60         } else {
  61             LOG.warn("No serializer for case {} is available in registry {}", cazeClass, reg);
  62         }
  63         stream.endNode();
  64     }
  65 }