dom/mdsal-dom-spi/src/main/java/org/opendaylight/mdsal/dom/spi/shard/WritableNodeOperation.java

   1 /*
   2  * Copyright (c) 2016 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.mdsal.dom.spi.shard;
   9
  10 import static java.util.Objects.requireNonNull;
  11
  12 import com.google.common.annotations.Beta;
  13 import java.util.Optional;
  14 import org.opendaylight.mdsal.dom.api.DOMDataTreeWriteCursor;
  15 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.PathArgument;
  16 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
  17 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNodeContainer;
  18
  19 @Beta
  20 @Deprecated(forRemoval = true)
  21 public abstract class WritableNodeOperation implements WriteCursorStrategy {
  22     private final WriteableModificationNode node;
  23     private final DOMDataTreeWriteCursor cursor;
  24
  25     protected WritableNodeOperation(final WriteableModificationNode node, final DOMDataTreeWriteCursor cursor) {
  26         this.node = requireNonNull(node);
  27         this.cursor = requireNonNull(cursor);
  28     }
  29
  30     protected final DOMDataTreeWriteCursor getCursor() {
  31         return cursor;
  32     }
  33
  34     private void delete(final PathArgument arg, final WriteableModificationNode potentialChild) {
  35         cursor.delete(arg);
  36         if (potentialChild != null) {
  37             potentialChild.markDeleted();
  38         }
  39     }
  40
  41     @Override
  42     public final void delete(final PathArgument arg) {
  43         delete(arg, node.getChild(arg));
  44     }
  45
  46     @Override
  47     public final void merge(final PathArgument arg, final NormalizedNode<?, ?> data) {
  48         WriteableModificationNode potentialChild = node.getChild(arg);
  49         if (potentialChild == null) {
  50             cursor.merge(arg, data);
  51         } else {
  52             potentialChild.createOperation(cursor).mergeToCurrent((NormalizedNodeContainer<?, ?, ?>) data);
  53         }
  54     }
  55
  56     @Override
  57     public final void write(final PathArgument arg, final NormalizedNode<?, ?> data) {
  58         WriteableModificationNode potentialChild = node.getChild(arg);
  59         if (potentialChild == null) {
  60             cursor.write(arg, data);
  61         } else {
  62             potentialChild.createOperation(cursor).writeToCurrent((NormalizedNodeContainer<?, ?, ?>) data);
  63         }
  64     }
  65
  66     @Override
  67     public final WriteCursorStrategy enter(final PathArgument arg) {
  68         cursor.enter(arg);
  69         WriteableModificationNode child = node.getChild(arg);
  70         if (child != null) {
  71             return child.createOperation(cursor);
  72         }
  73         return new DelegatingWriteCursorStrategy() {
  74             @Override
  75             protected DOMDataTreeWriteCursor delegate() {
  76                 return cursor;
  77             }
  78         };
  79     }
  80
  81     @Override
  82     public final void mergeToCurrent(final NormalizedNodeContainer<?, ?, ?> data) {
  83         for (NormalizedNode<?, ?> child : data.getValue()) {
  84             PathArgument childId = child.getIdentifier();
  85             WriteableModificationNode shardChild = node.getChild(childId);
  86             if (shardChild != null) {
  87                 // FIXME: Decompose somehow
  88                 throw new UnsupportedOperationException("Not implemented yet");
  89             }
  90
  91             cursor.merge(childId, child);
  92         }
  93     }
  94
  95     @Override
  96     @SuppressWarnings("rawtypes")
  97     public final void writeToCurrent(final NormalizedNodeContainer<?, ?, ?> data) {
  98         // write the entire thing into the cursor
  99         write(data.getIdentifier(), data);
 100         // write the children with subshard check and subshard write if we are going into subshard
 101         cursor.enter(data.getIdentifier());
 102         for (NormalizedNode<?, ?> writtenChild : data.getValue()) {
 103             write(writtenChild.getIdentifier(), writtenChild);
 104         }
 105         // Delete step - remove subshard data that was written into current shard
 106         // delete from current
 107         node.getChildrenWithSubshards().entrySet()
 108                 .stream().filter(entry -> entry.getValue() instanceof WriteableSubshardBoundaryNode).forEach(entry -> {
 109                     @SuppressWarnings("unchecked")
 110                     Optional<NormalizedNode<?, ?>> writtenValue =
 111                             ((NormalizedNodeContainer) data).getChild(entry.getKey());
 112                     if (writtenValue.isPresent()) {
 113                         // delete from current
 114                         cursor.delete(entry.getKey());
 115                     }
 116                 });
 117
 118         cursor.exit();
 119     }
 120 }