2 * Copyright (c) 2014 Cisco Systems, Inc. and others. All rights reserved.
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
8 package org.opendaylight.yangtools.yang.data.impl.schema.tree;
10 import com.google.common.base.Preconditions;
11 import org.kohsuke.MetaInfServices;
12 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
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.NormalizedNode;
17 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNodeContainer;
18 import org.opendaylight.yangtools.yang.data.api.schema.tree.DataTree;
19 import org.opendaylight.yangtools.yang.data.api.schema.tree.DataTreeCandidate;
20 import org.opendaylight.yangtools.yang.data.api.schema.tree.DataTreeConfiguration;
21 import org.opendaylight.yangtools.yang.data.api.schema.tree.DataTreeFactory;
22 import org.opendaylight.yangtools.yang.data.api.schema.tree.DataTreeModification;
23 import org.opendaylight.yangtools.yang.data.api.schema.tree.DataValidationFailedException;
24 import org.opendaylight.yangtools.yang.data.api.schema.tree.spi.TreeNodeFactory;
25 import org.opendaylight.yangtools.yang.data.api.schema.tree.spi.Version;
26 import org.opendaylight.yangtools.yang.data.impl.schema.ImmutableNodes;
27 import org.opendaylight.yangtools.yang.data.impl.schema.builder.impl.ImmutableContainerNodeBuilder;
28 import org.opendaylight.yangtools.yang.data.util.DataSchemaContextNode;
29 import org.opendaylight.yangtools.yang.data.util.DataSchemaContextTree;
30 import org.opendaylight.yangtools.yang.model.api.ContainerSchemaNode;
31 import org.opendaylight.yangtools.yang.model.api.DataNodeContainer;
32 import org.opendaylight.yangtools.yang.model.api.DataSchemaNode;
33 import org.opendaylight.yangtools.yang.model.api.ListSchemaNode;
34 import org.opendaylight.yangtools.yang.model.api.SchemaContext;
37 * A factory for creating in-memory data trees.
40 public final class InMemoryDataTreeFactory implements DataTreeFactory {
41 private static final NormalizedNode<?, ?> ROOT_CONTAINER = ImmutableNodes.containerNode(SchemaContext.NAME);
44 public DataTree create(final DataTreeConfiguration treeConfig) {
45 return new InMemoryDataTree(TreeNodeFactory.createTreeNode(createRoot(treeConfig.getRootPath()),
46 Version.initial()), treeConfig, null);
50 public DataTree create(final DataTreeConfiguration treeConfig, final SchemaContext initialSchemaContext) {
51 return create(treeConfig, initialSchemaContext, true);
55 public DataTree create(final DataTreeConfiguration treeConfig, final SchemaContext initialSchemaContext,
56 final NormalizedNodeContainer<?, ?, ?> initialRoot) throws DataValidationFailedException {
57 final DataTree ret = create(treeConfig, initialSchemaContext, false);
59 final DataTreeModification mod = ret.takeSnapshot().newModification();
60 mod.write(YangInstanceIdentifier.EMPTY, initialRoot);
64 final DataTreeCandidate candidate = ret.prepare(mod);
65 ret.commit(candidate);
69 private static DataTree create(final DataTreeConfiguration treeConfig, final SchemaContext initialSchemaContext,
70 final boolean maskMandatory) {
71 final DataSchemaNode rootSchemaNode = getRootSchemaNode(initialSchemaContext, treeConfig.getRootPath());
72 final NormalizedNode<?, ?> rootDataNode = createRoot((DataNodeContainer)rootSchemaNode,
73 treeConfig.getRootPath());
74 return new InMemoryDataTree(TreeNodeFactory.createTreeNode(rootDataNode, Version.initial()), treeConfig,
75 initialSchemaContext, rootSchemaNode, maskMandatory);
78 private static DataSchemaNode getRootSchemaNode(final SchemaContext schemaContext,
79 final YangInstanceIdentifier rootPath) {
80 final DataSchemaContextTree contextTree = DataSchemaContextTree.from(schemaContext);
81 final DataSchemaContextNode<?> rootContextNode = contextTree.getChild(rootPath);
82 Preconditions.checkArgument(rootContextNode != null, "Failed to find root %s in schema context", rootPath);
84 final DataSchemaNode rootSchemaNode = rootContextNode.getDataSchemaNode();
85 Preconditions.checkArgument(rootSchemaNode instanceof DataNodeContainer,
86 "Root %s resolves to non-container type %s", rootPath, rootSchemaNode);
87 return rootSchemaNode;
90 private static NormalizedNode<?, ?> createRoot(final DataNodeContainer schemaNode,
91 final YangInstanceIdentifier path) {
93 Preconditions.checkArgument(schemaNode instanceof ContainerSchemaNode,
94 "Conceptual tree root has to be a container, not %s", schemaNode);
95 return ROOT_CONTAINER;
98 final PathArgument arg = path.getLastPathArgument();
99 if (schemaNode instanceof ContainerSchemaNode) {
100 Preconditions.checkArgument(arg instanceof NodeIdentifier, "Mismatched container %s path %s", schemaNode,
102 return ImmutableContainerNodeBuilder.create().withNodeIdentifier((NodeIdentifier) arg).build();
103 } else if (schemaNode instanceof ListSchemaNode) {
104 // This can either be a top-level list or its individual entry
105 if (arg instanceof NodeIdentifierWithPredicates) {
106 return ImmutableNodes.mapEntryBuilder().withNodeIdentifier((NodeIdentifierWithPredicates) arg).build();
108 Preconditions.checkArgument(arg instanceof NodeIdentifier, "Mismatched list %s path %s", schemaNode, path);
109 return ImmutableNodes.mapNodeBuilder().withNodeIdentifier((NodeIdentifier) arg).build();
111 throw new IllegalArgumentException("Unsupported root schema " + schemaNode);
115 private static NormalizedNode<?, ?> createRoot(final YangInstanceIdentifier path) {
116 if (path.isEmpty()) {
117 return ROOT_CONTAINER;
120 final PathArgument arg = path.getLastPathArgument();
121 if (arg instanceof NodeIdentifier) {
122 return ImmutableContainerNodeBuilder.create().withNodeIdentifier((NodeIdentifier) arg).build();
124 if (arg instanceof NodeIdentifierWithPredicates) {
125 return ImmutableNodes.mapEntryBuilder().withNodeIdentifier((NodeIdentifierWithPredicates) arg).build();
128 // FIXME: implement augmentations and leaf-lists
129 throw new IllegalArgumentException("Unsupported root node " + arg);