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