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.Optional;
11 import com.google.common.base.Preconditions;
12 import com.google.common.cache.CacheBuilder;
13 import com.google.common.cache.CacheLoader;
14 import com.google.common.cache.LoadingCache;
15 import java.util.concurrent.ExecutionException;
16 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.AugmentationIdentifier;
17 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.PathArgument;
18 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
19 import org.opendaylight.yangtools.yang.data.impl.schema.builder.api.DataContainerNodeBuilder;
20 import org.opendaylight.yangtools.yang.model.api.AugmentationTarget;
21 import org.opendaylight.yangtools.yang.model.api.DataNodeContainer;
22 import org.opendaylight.yangtools.yang.model.api.DataSchemaNode;
23 import org.slf4j.Logger;
24 import org.slf4j.LoggerFactory;
27 * Base strategy for applying changes to a ContainerNode, irrespective of its
30 * @param <T> Type of the container node
32 abstract class AbstractDataNodeContainerModificationStrategy<T extends DataNodeContainer> extends AbstractNodeContainerModificationStrategy {
33 private static final Logger LOG = LoggerFactory.getLogger(AbstractDataNodeContainerModificationStrategy.class);
34 private final LoadingCache<PathArgument, ModificationApplyOperation> childCache = CacheBuilder.newBuilder()
35 .build(new CacheLoader<PathArgument, ModificationApplyOperation>() {
37 public ModificationApplyOperation load(final PathArgument key) throws Exception {
38 if (key instanceof AugmentationIdentifier && schema instanceof AugmentationTarget) {
39 return SchemaAwareApplyOperation.from(schema, (AugmentationTarget) schema, (AugmentationIdentifier) key);
42 final DataSchemaNode child = schema.getDataChildByName(key.getNodeType());
43 return child == null ? null : SchemaAwareApplyOperation.from(child);
46 private final T schema;
48 protected AbstractDataNodeContainerModificationStrategy(final T schema, final Class<? extends NormalizedNode<?, ?>> nodeClass) {
50 this.schema = Preconditions.checkNotNull(schema);
53 protected final T getSchema() {
58 public final Optional<ModificationApplyOperation> getChild(final PathArgument identifier) {
60 return Optional.<ModificationApplyOperation> fromNullable(childCache.get(identifier));
61 } catch (ExecutionException e) {
62 LOG.trace("Child {} not present in container schema {}", identifier, this);
63 return Optional.absent();
68 @SuppressWarnings("rawtypes")
69 protected abstract DataContainerNodeBuilder createBuilder(NormalizedNode<?, ?> original);
72 public String toString() {
73 return getClass().getSimpleName() + " [" + schema + "]";