yang/yang-data-impl/src/main/java/org/opendaylight/yangtools/yang/data/impl/schema/tree/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.impl.schema.tree;
   9
  10 import static java.util.Objects.requireNonNull;
  11
  12 import java.util.Optional;
  13 import org.eclipse.jdt.annotation.NonNull;
  14 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
  15 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.NodeIdentifier;
  16 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.NodeIdentifierWithPredicates;
  17 import org.opendaylight.yangtools.yang.data.api.schema.MapNode;
  18 import org.opendaylight.yangtools.yang.data.api.schema.OrderedMapNode;
  19 import org.opendaylight.yangtools.yang.data.api.schema.tree.DataTreeConfiguration;
  20 import org.opendaylight.yangtools.yang.data.api.schema.tree.spi.TreeNode;
  21 import org.opendaylight.yangtools.yang.data.api.schema.tree.spi.Version;
  22 import org.opendaylight.yangtools.yang.data.impl.schema.ImmutableNodes;
  23 import org.opendaylight.yangtools.yang.data.impl.schema.builder.impl.ImmutableMapNodeBuilder;
  24 import org.opendaylight.yangtools.yang.data.impl.schema.builder.impl.ImmutableOrderedMapNodeBuilder;
  25 import org.opendaylight.yangtools.yang.data.impl.schema.tree.AbstractNodeContainerModificationStrategy.Invisible;
  26 import org.opendaylight.yangtools.yang.model.api.ListSchemaNode;
  27
  28 final class MapModificationStrategy extends Invisible<ListSchemaNode> {
  29     private static final NormalizedNodeContainerSupport<NodeIdentifier, OrderedMapNode> ORDERED_SUPPORT =
  30             new NormalizedNodeContainerSupport<>(OrderedMapNode.class, ChildTrackingPolicy.ORDERED,
  31                     ImmutableOrderedMapNodeBuilder::create, ImmutableOrderedMapNodeBuilder::create);
  32     private static final NormalizedNodeContainerSupport<NodeIdentifier, MapNode> UNORDERED_SUPPORT =
  33             new NormalizedNodeContainerSupport<>(MapNode.class, ImmutableMapNodeBuilder::create,
  34                     ImmutableMapNodeBuilder::create);
  35
  36     private final @NonNull MapNode emptyNode;
  37
  38     private MapModificationStrategy(final NormalizedNodeContainerSupport<?, ?> support, final ListSchemaNode schema,
  39         final DataTreeConfiguration treeConfig, final MapNode emptyNode) {
  40         super(support, treeConfig, MapEntryModificationStrategy.of(schema, treeConfig));
  41         this.emptyNode = requireNonNull(emptyNode);
  42     }
  43
  44     static MapModificationStrategy of(final ListSchemaNode schema, final DataTreeConfiguration treeConfig) {
  45         final NormalizedNodeContainerSupport<?, ?> support;
  46         final MapNode emptyNode;
  47         if (schema.isUserOrdered()) {
  48             support = ORDERED_SUPPORT;
  49             emptyNode = ImmutableNodes.orderedMapNode(schema.getQName());
  50         } else {
  51             support = UNORDERED_SUPPORT;
  52             emptyNode = ImmutableNodes.mapNode(schema.getQName());
  53         }
  54         return new MapModificationStrategy(support, schema, treeConfig, emptyNode);
  55     }
  56
  57     @Override
  58     public Optional<ModificationApplyOperation> getChild(final YangInstanceIdentifier.PathArgument identifier) {
  59         return identifier instanceof NodeIdentifierWithPredicates ? entryStrategy() : Optional.empty();
  60     }
  61
  62     @Override
  63     Optional<? extends TreeNode> apply(final ModifiedNode modification, final Optional<? extends TreeNode> storeMeta,
  64             final Version version) {
  65         return AutomaticLifecycleMixin.apply(super::apply, this::applyWrite, emptyNode, modification, storeMeta,
  66             version);
  67     }
  68
  69     @Override
  70     TreeNode defaultTreeNode() {
  71         return defaultTreeNode(emptyNode);
  72     }
  73 }