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.NodeIdentifier;
  15 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.NodeIdentifierWithPredicates;
  16 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.PathArgument;
  17 import org.opendaylight.yangtools.yang.data.api.schema.MapNode;
  18 import org.opendaylight.yangtools.yang.data.api.schema.SystemMapNode;
  19 import org.opendaylight.yangtools.yang.data.api.schema.UserMapNode;
  20 import org.opendaylight.yangtools.yang.data.api.schema.tree.DataTreeConfiguration;
  21 import org.opendaylight.yangtools.yang.data.impl.schema.ImmutableNodes;
  22 import org.opendaylight.yangtools.yang.data.impl.schema.builder.impl.ImmutableMapNodeBuilder;
  23 import org.opendaylight.yangtools.yang.data.impl.schema.builder.impl.ImmutableUserMapNodeBuilder;
  24 import org.opendaylight.yangtools.yang.data.impl.schema.tree.AbstractNodeContainerModificationStrategy.Invisible;
  25 import org.opendaylight.yangtools.yang.data.spi.tree.TreeNode;
  26 import org.opendaylight.yangtools.yang.data.spi.tree.Version;
  27 import org.opendaylight.yangtools.yang.model.api.ListSchemaNode;
  28
  29 final class MapModificationStrategy extends Invisible<ListSchemaNode> {
  30     private static final NormalizedNodeContainerSupport<NodeIdentifier, UserMapNode> ORDERED_SUPPORT =
  31             new NormalizedNodeContainerSupport<>(UserMapNode.class, ChildTrackingPolicy.ORDERED,
  32                     ImmutableUserMapNodeBuilder::create, ImmutableUserMapNodeBuilder::create);
  33     private static final NormalizedNodeContainerSupport<NodeIdentifier, SystemMapNode> UNORDERED_SUPPORT =
  34             new NormalizedNodeContainerSupport<>(SystemMapNode.class, ImmutableMapNodeBuilder::create,
  35                     ImmutableMapNodeBuilder::create);
  36
  37     private final @NonNull MapNode emptyNode;
  38
  39     private MapModificationStrategy(final NormalizedNodeContainerSupport<?, ?> support, final ListSchemaNode schema,
  40         final DataTreeConfiguration treeConfig, final MapNode emptyNode) {
  41         super(support, treeConfig, MapEntryModificationStrategy.of(schema, treeConfig));
  42         this.emptyNode = requireNonNull(emptyNode);
  43     }
  44
  45     static MapModificationStrategy of(final ListSchemaNode schema, final DataTreeConfiguration treeConfig) {
  46         final NormalizedNodeContainerSupport<?, ?> support;
  47         final MapNode emptyNode;
  48         if (schema.isUserOrdered()) {
  49             support = ORDERED_SUPPORT;
  50             emptyNode = ImmutableNodes.orderedMapNode(schema.getQName());
  51         } else {
  52             support = UNORDERED_SUPPORT;
  53             emptyNode = ImmutableNodes.mapNode(schema.getQName());
  54         }
  55         return new MapModificationStrategy(support, schema, treeConfig, emptyNode);
  56     }
  57
  58     @Override
  59     public ModificationApplyOperation childByArg(final PathArgument arg) {
  60         return arg instanceof NodeIdentifierWithPredicates ? entryStrategy() : null;
  61     }
  62
  63     @Override
  64     Optional<? extends TreeNode> apply(final ModifiedNode modification, final Optional<? extends TreeNode> storeMeta,
  65             final Version version) {
  66         return AutomaticLifecycleMixin.apply(super::apply, this::applyWrite, emptyNode, modification, storeMeta,
  67             version);
  68     }
  69
  70     @Override
  71     TreeNode defaultTreeNode() {
  72         return defaultTreeNode(emptyNode);
  73     }
  74 }