yang/yang-data-impl/src/main/java/org/opendaylight/yangtools/yang/data/impl/schema/tree/InMemoryDataTreeFactory.java

   1 /*
   2  * Copyright (c) 2014 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 package org.opendaylight.yangtools.yang.data.impl.schema.tree;
   9
  10 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
  11 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.NodeIdentifier;
  12 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.NodeIdentifierWithPredicates;
  13 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.PathArgument;
  14 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
  15 import org.opendaylight.yangtools.yang.data.api.schema.tree.DataTreeConfiguration;
  16 import org.opendaylight.yangtools.yang.data.api.schema.tree.DataTreeConfiguration.Builder;
  17 import org.opendaylight.yangtools.yang.data.api.schema.tree.DataTreeFactory;
  18 import org.opendaylight.yangtools.yang.data.api.schema.tree.TipProducingDataTree;
  19 import org.opendaylight.yangtools.yang.data.api.schema.tree.TreeType;
  20 import org.opendaylight.yangtools.yang.data.api.schema.tree.spi.TreeNodeFactory;
  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.ImmutableContainerNodeBuilder;
  24 import org.opendaylight.yangtools.yang.model.api.SchemaContext;
  25
  26 /**
  27  * A factory for creating in-memory data trees.
  28  */
  29 public final class InMemoryDataTreeFactory implements DataTreeFactory {
  30     private static final InMemoryDataTreeFactory INSTANCE = new InMemoryDataTreeFactory();
  31     private static final NormalizedNode<?, ?> ROOT_CONTAINER = ImmutableNodes.containerNode(SchemaContext.NAME);
  32
  33     private InMemoryDataTreeFactory() {
  34         // Never instantiated externally
  35     }
  36
  37     @Override
  38     public TipProducingDataTree create(final TreeType treeType) {
  39         return create(DataTreeConfiguration.getDefault(treeType));
  40     }
  41
  42     @Override
  43     public TipProducingDataTree create(final DataTreeConfiguration treeConfig) {
  44         return new InMemoryDataTree(TreeNodeFactory.createTreeNode(createRoot(treeConfig.getRootPath()),
  45             Version.initial()), treeConfig, null);
  46     }
  47
  48     private static NormalizedNode<?, ?> createRoot(final YangInstanceIdentifier path) {
  49         if (path.isEmpty()) {
  50             return ROOT_CONTAINER;
  51         }
  52
  53         final PathArgument arg = path.getLastPathArgument();
  54         if (arg instanceof NodeIdentifier) {
  55             return ImmutableContainerNodeBuilder.create().withNodeIdentifier((NodeIdentifier) arg).build();
  56         }
  57         if (arg instanceof NodeIdentifierWithPredicates) {
  58             return ImmutableNodes.mapEntryBuilder().withNodeIdentifier((NodeIdentifierWithPredicates) arg).build();
  59         }
  60
  61         // FIXME: implement augmentations and leaf-lists
  62         throw new IllegalArgumentException("Unsupported root node " + arg);
  63     }
  64
  65     @Override
  66     public TipProducingDataTree create(final TreeType treeType, final YangInstanceIdentifier rootPath) {
  67         if (rootPath.isEmpty()) {
  68             return create(treeType);
  69         }
  70
  71         final DataTreeConfiguration defConfig = DataTreeConfiguration.getDefault(treeType);
  72         final DataTreeConfiguration config;
  73         if (!rootPath.isEmpty()) {
  74             config = new Builder(treeType).setMandatoryNodesValidation(defConfig.isMandatoryNodesValidationEnabled())
  75                     .setRootPath(rootPath).setUniqueIndexes(defConfig.isUniqueIndexEnabled()).build();
  76         } else {
  77             config = defConfig;
  78         }
  79
  80         return new InMemoryDataTree(TreeNodeFactory.createTreeNode(createRoot(rootPath), Version.initial()), config,
  81             null);
  82     }
  83
  84     /**
  85      * Get an instance of this factory. This method cannot fail.
  86      *
  87      * @return Data tree factory instance.
  88      */
  89     public static InMemoryDataTreeFactory getInstance() {
  90         return INSTANCE;
  91     }
  92 }