opendaylight/md-sal/sal-binding-broker/src/main/java/org/opendaylight/controller/md/sal/binding/impl/LazySerializedDOMRpcResult.java

   1 /*
   2  * Copyright (c) 2015 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.controller.md.sal.binding.impl;
   9
  10 import java.util.Collection;
  11 import org.opendaylight.controller.md.sal.dom.api.DOMRpcResult;
  12 import org.opendaylight.yangtools.binding.data.codec.impl.BindingNormalizedNodeCodecRegistry;
  13 import org.opendaylight.yangtools.yang.binding.DataContainer;
  14 import org.opendaylight.yangtools.yang.binding.DataObject;
  15 import org.opendaylight.yangtools.yang.common.RpcError;
  16 import org.opendaylight.yangtools.yang.common.RpcResult;
  17 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
  18
  19 abstract class LazySerializedDOMRpcResult implements DOMRpcResult {
  20
  21     private final RpcResult<?> bindingResult;
  22
  23     LazySerializedDOMRpcResult(final RpcResult<?> bindingResult) {
  24         this.bindingResult = bindingResult;
  25     }
  26
  27     static final LazySerializedDOMRpcResult create(final RpcResult<?> bindingResult, final BindingNormalizedNodeCodecRegistry codec) {
  28         final Object resultData = bindingResult.getResult();
  29
  30         if(resultData instanceof DataObject) {
  31             return new DataResult(bindingResult,codec);
  32
  33
  34         }
  35         return new EmptyDataResult(bindingResult);
  36     }
  37
  38     RpcResult<?> bidningRpcResult() {
  39         return bindingResult;
  40     }
  41
  42     @Override
  43     public Collection<RpcError> getErrors() {
  44         return bindingResult.getErrors();
  45     }
  46
  47
  48     private static final class DataResult extends LazySerializedDOMRpcResult {
  49
  50         private final BindingNormalizedNodeCodecRegistry codec;
  51         private NormalizedNode<?, ?> domData;
  52
  53         public DataResult(final RpcResult<?> bindingResult, final BindingNormalizedNodeCodecRegistry codec) {
  54             super(bindingResult);
  55             this.codec = codec;
  56         }
  57
  58         @Override
  59         public NormalizedNode<?, ?> getResult() {
  60             if(domData == null) {
  61                 domData = codec.toNormalizedNodeRpcData((DataContainer) bidningRpcResult().getResult());
  62             }
  63             return domData;
  64         }
  65     }
  66
  67
  68     private static final class EmptyDataResult extends LazySerializedDOMRpcResult {
  69
  70         public EmptyDataResult(final RpcResult<?> bindingResult) {
  71             super(bindingResult);
  72         }
  73
  74         @Override
  75         public NormalizedNode<?, ?> getResult() {
  76             // FIXME: Should we return something else?
  77             return null;
  78         }
  79
  80     }
  81
  82
  83
  84 }