dom/mdsal-dom-inmemory-datastore/src/main/java/org/opendaylight/mdsal/dom/store/inmemory/ShardDataModificationFactoryBuilder.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
   9 package org.opendaylight.mdsal.dom.store.inmemory;
  10
  11 import com.google.common.base.Preconditions;
  12 import java.util.HashMap;
  13 import java.util.Iterator;
  14 import java.util.Map;
  15 import org.opendaylight.mdsal.dom.api.DOMDataTreeIdentifier;
  16 import org.opendaylight.yangtools.concepts.Builder;
  17 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
  18 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.PathArgument;
  19
  20 class ShardDataModificationFactoryBuilder extends ModificationContextNodeBuilder
  21         implements Builder<ShardDataModificationFactory> {
  22
  23     private final Map<DOMDataTreeIdentifier, ForeignShardModificationContext> childShards = new HashMap<>();
  24     private final DOMDataTreeIdentifier root;
  25
  26     ShardDataModificationFactoryBuilder(final DOMDataTreeIdentifier root) {
  27         this.root = Preconditions.checkNotNull(root);
  28     }
  29
  30     void addSubshard(final ForeignShardModificationContext value) {
  31         WriteableSubshardBoundaryNode leafNode = WriteableSubshardBoundaryNode.from(value);
  32         putNode(value.getIdentifier().getRootIdentifier(), leafNode);
  33     }
  34
  35     void addSubshard(final DOMDataTreeIdentifier prefix, final ForeignShardModificationContext value) {
  36         childShards.put(prefix, value);
  37     }
  38
  39     private void putNode(final YangInstanceIdentifier key, final WriteableSubshardBoundaryNode subshardNode) {
  40         final Iterator<PathArgument> toBoundary = toRelative(key).getPathArguments().iterator();
  41         if (toBoundary.hasNext()) {
  42             ModificationContextNodeBuilder current = this;
  43             while (true) {
  44                 final PathArgument nextArg = toBoundary.next();
  45                 if (!toBoundary.hasNext()) {
  46                     current.addBoundary(nextArg, subshardNode);
  47                     break;
  48                 }
  49
  50                 current = getInterior(nextArg);
  51             }
  52         }
  53     }
  54
  55     @Override
  56     public ShardDataModificationFactory build() {
  57         return new ShardDataModificationFactory(root, buildChildren(), childShards);
  58     }
  59
  60     private YangInstanceIdentifier toRelative(final YangInstanceIdentifier key) {
  61         return key.relativeTo(root.getRootIdentifier()).get();
  62     }
  63 }