opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/modification/WriteModification.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
   9 package org.opendaylight.controller.cluster.datastore.modification;
  10
  11 import java.io.IOException;
  12 import java.io.ObjectInput;
  13 import java.io.ObjectOutput;
  14 import org.opendaylight.controller.cluster.datastore.DataStoreVersions;
  15 import org.opendaylight.controller.cluster.datastore.utils.SerializationUtils;
  16 import org.opendaylight.controller.cluster.datastore.utils.SerializationUtils.Applier;
  17 import org.opendaylight.controller.sal.core.spi.data.DOMStoreWriteTransaction;
  18 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
  19 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
  20 import org.opendaylight.yangtools.yang.data.api.schema.tree.DataTreeModification;
  21
  22 /**
  23  * WriteModification stores all the parameters required to write data to the specified path
  24  */
  25 public class WriteModification extends AbstractModification {
  26     private static final long serialVersionUID = 1L;
  27
  28     private NormalizedNode<?, ?> data;
  29
  30     public WriteModification() {
  31         this(DataStoreVersions.CURRENT_VERSION);
  32     }
  33
  34     public WriteModification(short version) {
  35         super(version);
  36     }
  37
  38     public WriteModification(final YangInstanceIdentifier path, final NormalizedNode<?, ?> data) {
  39         super(path);
  40         this.data = data;
  41     }
  42
  43     @Override
  44     public void apply(final DOMStoreWriteTransaction transaction) {
  45         transaction.write(getPath(), data);
  46     }
  47
  48     @Override
  49     public void apply(final DataTreeModification transaction) {
  50         transaction.write(getPath(), data);
  51     }
  52
  53     public NormalizedNode<?, ?> getData() {
  54         return data;
  55     }
  56
  57     @Override
  58     public byte getType() {
  59         return WRITE;
  60     }
  61
  62     @Override
  63     public void readExternal(ObjectInput in) throws IOException, ClassNotFoundException {
  64         SerializationUtils.deserializePathAndNode(in, this, APPLIER);
  65     }
  66
  67     @Override
  68     public void writeExternal(ObjectOutput out) throws IOException {
  69         SerializationUtils.serializePathAndNode(getPath(), data, out);
  70     }
  71
  72     public static WriteModification fromStream(ObjectInput in, short version)
  73             throws ClassNotFoundException, IOException {
  74         WriteModification mod = new WriteModification(version);
  75         mod.readExternal(in);
  76         return mod;
  77     }
  78
  79     private static final Applier<WriteModification> APPLIER = new Applier<WriteModification>() {
  80         @Override
  81         public void apply(WriteModification instance, YangInstanceIdentifier path,
  82                 NormalizedNode<?, ?> node) {
  83             instance.setPath(path);
  84             instance.data = node;
  85         }
  86     };
  87 }