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 static java.util.Objects.requireNonNull;
  11
  12 import com.google.common.annotations.Beta;
  13 import java.io.IOException;
  14 import org.opendaylight.mdsal.binding.javav2.spec.base.Instantiable;
  15 import org.opendaylight.mdsal.binding.javav2.spec.base.Item;
  16 import org.opendaylight.mdsal.binding.javav2.spec.base.TreeNode;
  17 import org.opendaylight.mdsal.binding.javav2.spec.runtime.BindingStreamEventWriter;
  18 import org.opendaylight.mdsal.binding.javav2.spec.runtime.TreeNodeSerializer;
  19 import org.opendaylight.mdsal.binding.javav2.spec.runtime.TreeNodeSerializerImplementation;
  20 import org.opendaylight.mdsal.binding.javav2.spec.runtime.TreeNodeSerializerRegistry;
  21 import org.slf4j.Logger;
  22 import org.slf4j.LoggerFactory;
  23
  24 /**
  25  * Dispatch serializer, which emit DOM data from Binding v2 via stream writer.
  26  */
  27 @Beta
  28 public final class ChoiceDispatchSerializer implements TreeNodeSerializerImplementation {
  29
  30     private static final Logger LOG = LoggerFactory.getLogger(ChoiceDispatchSerializer.class);
  31
  32     @SuppressWarnings("rawtypes")
  33     private final Class choiceClass;
  34
  35     @SuppressWarnings("rawtypes")
  36     private ChoiceDispatchSerializer(final Class choiceClass) {
  37         this.choiceClass = requireNonNull(choiceClass);
  38     }
  39
  40     /**
  41      * Prepare instance of serializer from choice class.
  42      *
  43      * @param choiceClass
  44      *            - class choice
  45      * @return instance of serializer
  46      */
  47     public static ChoiceDispatchSerializer from(final Class<? extends Instantiable<?>> choiceClass) {
  48         return new ChoiceDispatchSerializer(choiceClass);
  49     }
  50
  51     @SuppressWarnings("unchecked")
  52     @Override
  53     public void serialize(final TreeNodeSerializerRegistry reg, final TreeNode obj,
  54             final BindingStreamEventWriter stream) throws IOException {
  55         @SuppressWarnings("rawtypes")
  56         final Class cazeClass = ((Instantiable<?>) obj).implementedInterface();
  57         stream.startChoiceNode(new Item<>(choiceClass), BindingStreamEventWriter.UNKNOWN_SIZE);
  58         final TreeNodeSerializer caseSerializer = reg.getSerializer(cazeClass);
  59         if (caseSerializer != null) {
  60             caseSerializer.serialize(obj, stream);
  61         } else {
  62             LOG.warn("No serializer for case {} is available in registry {}", cazeClass, reg);
  63         }
  64         stream.endNode();
  65     }
  66 }