data/yang-data-tree-ri/src/main/java/org/opendaylight/yangtools/yang/data/tree/impl/MapModificationStrategy.java

   1 /*
   2  * Copyright (c) 2019 Pantheon Technologies, s.r.o. 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.yangtools.yang.data.tree.impl;
   9
  10 import static java.util.Objects.requireNonNull;
  11
  12 import org.eclipse.jdt.annotation.NonNull;
  13 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.NodeIdentifier;
  14 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.NodeIdentifierWithPredicates;
  15 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.PathArgument;
  16 import org.opendaylight.yangtools.yang.data.api.schema.MapNode;
  17 import org.opendaylight.yangtools.yang.data.api.schema.SystemMapNode;
  18 import org.opendaylight.yangtools.yang.data.api.schema.UserMapNode;
  19 import org.opendaylight.yangtools.yang.data.tree.api.DataTreeConfiguration;
  20 import org.opendaylight.yangtools.yang.data.tree.impl.AbstractNodeContainerModificationStrategy.Invisible;
  21 import org.opendaylight.yangtools.yang.data.tree.impl.node.TreeNode;
  22 import org.opendaylight.yangtools.yang.data.tree.impl.node.Version;
  23 import org.opendaylight.yangtools.yang.model.api.ListSchemaNode;
  24
  25 final class MapModificationStrategy extends Invisible<ListSchemaNode> {
  26     private static final NormalizedNodeContainerSupport<NodeIdentifier, UserMapNode> ORDERED_SUPPORT =
  27         new NormalizedNodeContainerSupport<>(UserMapNode.class, ChildTrackingPolicy.ORDERED,
  28             BUILDER_FACTORY::newUserMapBuilder, BUILDER_FACTORY::newUserMapBuilder);
  29     private static final NormalizedNodeContainerSupport<NodeIdentifier, SystemMapNode> UNORDERED_SUPPORT =
  30         new NormalizedNodeContainerSupport<>(SystemMapNode.class, BUILDER_FACTORY::newSystemMapBuilder,
  31             BUILDER_FACTORY::newSystemMapBuilder);
  32
  33     private final @NonNull MapNode emptyNode;
  34
  35     private MapModificationStrategy(final NormalizedNodeContainerSupport<?, ?> support, final ListSchemaNode schema,
  36             final DataTreeConfiguration treeConfig, final MapNode emptyNode) {
  37         super(support, treeConfig, MapEntryModificationStrategy.of(schema, treeConfig));
  38         this.emptyNode = requireNonNull(emptyNode);
  39     }
  40
  41     static MapModificationStrategy of(final ListSchemaNode schema, final DataTreeConfiguration treeConfig) {
  42         final NormalizedNodeContainerSupport<?, ?> support;
  43         final MapNode emptyNode;
  44         final var name = NodeIdentifier.create(schema.getQName());
  45         if (schema.isUserOrdered()) {
  46             support = ORDERED_SUPPORT;
  47             emptyNode = BUILDER_FACTORY.newUserMapBuilder().withNodeIdentifier(name).build();
  48         } else {
  49             support = UNORDERED_SUPPORT;
  50             emptyNode = BUILDER_FACTORY.newSystemMapBuilder().withNodeIdentifier(name).build();
  51         }
  52         return new MapModificationStrategy(support, schema, treeConfig, emptyNode);
  53     }
  54
  55     @Override
  56     public ModificationApplyOperation childByArg(final PathArgument arg) {
  57         return arg instanceof NodeIdentifierWithPredicates ? entryStrategy() : null;
  58     }
  59
  60     @Override
  61     TreeNode apply(final ModifiedNode modification, final TreeNode currentMeta, final Version version) {
  62         return AutomaticLifecycleMixin.apply(super::apply, this::applyWrite, emptyNode, modification, currentMeta,
  63             version);
  64     }
  65
  66     @Override
  67     TreeNode defaultTreeNode() {
  68         return defaultTreeNode(emptyNode);
  69     }
  70 }