dom/mdsal-dom-inmemory-datastore/src/main/java/org/opendaylight/mdsal/dom/store/inmemory/ModificationContextNodeBuilder.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 java.util.HashMap;
  12 import java.util.Map;
  13 import java.util.Map.Entry;
  14 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.PathArgument;
  15
  16 abstract class ModificationContextNodeBuilder<T extends WriteableModificationNode> {
  17
  18     private final Map<PathArgument, InteriorNodeBuilder> interiorChildren = new HashMap<>();
  19     private final Map<PathArgument, WriteableSubshardBoundaryNode> boundaryChildren = new HashMap<>();
  20
  21     protected InteriorNodeBuilder getInterior(final PathArgument arg) {
  22         InteriorNodeBuilder potential = interiorChildren.get(arg);
  23         if (potential == null) {
  24             potential = new InteriorNodeBuilder(arg);
  25             interiorChildren.put(arg, potential);
  26         }
  27         return potential;
  28     }
  29
  30     protected void addBoundary(final PathArgument arg, final WriteableSubshardBoundaryNode subshardNode) {
  31         boundaryChildren.put(arg, subshardNode);
  32     }
  33
  34     final T build() {
  35         HashMap<PathArgument, WriteableModificationNode> builtChildren =
  36                 new HashMap<PathArgument, WriteableModificationNode>(boundaryChildren);
  37         for (Entry<PathArgument, InteriorNodeBuilder> interiorNode : interiorChildren.entrySet()) {
  38             WriteableModificationNode builded = interiorNode.getValue().build();
  39             builtChildren.put(builded.getIdentifier(), builded);
  40         }
  41
  42         return build(builtChildren);
  43     }
  44
  45     abstract T build(Map<PathArgument, WriteableModificationNode> children);
  46
  47     private static class InteriorNodeBuilder extends ModificationContextNodeBuilder<WritableInteriorNode> {
  48
  49         private final PathArgument arg;
  50
  51         InteriorNodeBuilder(final PathArgument arg) {
  52             this.arg = arg;
  53         }
  54
  55         @Override
  56         WritableInteriorNode build(final Map<PathArgument, WriteableModificationNode> children) {
  57             return new WritableInteriorNode(arg, children);
  58         }
  59     }
  60
  61 }