/*
* Copyright (c) 2014 Cisco Systems, Inc. and others. All rights reserved.
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v1.0 which accompanies this distribution,
* and is available at http://www.eclipse.org/legal/epl-v10.html
*/
package org.opendaylight.yangtools.yang.data.impl.schema.tree;
import com.google.common.base.Optional;
import com.google.common.base.Preconditions;
import com.google.common.cache.CacheBuilder;
import com.google.common.cache.CacheLoader;
import com.google.common.cache.LoadingCache;
import com.google.common.util.concurrent.UncheckedExecutionException;
import java.util.concurrent.ExecutionException;
import javax.annotation.Nonnull;
import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.AugmentationIdentifier;
import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.PathArgument;
import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
import org.opendaylight.yangtools.yang.data.api.schema.tree.DataTreeConfiguration;
import org.opendaylight.yangtools.yang.data.impl.schema.builder.api.DataContainerNodeBuilder;
import org.opendaylight.yangtools.yang.model.api.AugmentationTarget;
import org.opendaylight.yangtools.yang.model.api.DataNodeContainer;
import org.opendaylight.yangtools.yang.model.api.DataSchemaNode;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* Base strategy for applying changes to a ContainerNode, irrespective of its
* actual type.
*
* @param <T> Type of the container node
*/
abstract class AbstractDataNodeContainerModificationStrategy<T extends DataNodeContainer> extends AbstractNodeContainerModificationStrategy {
private static final Logger LOG = LoggerFactory.getLogger(AbstractDataNodeContainerModificationStrategy.class);
private final LoadingCache<PathArgument, ModificationApplyOperation> childCache = CacheBuilder.newBuilder()
.build(new CacheLoader<PathArgument, ModificationApplyOperation>() {
@Override
public ModificationApplyOperation load(@Nonnull final PathArgument key) {
if (key instanceof AugmentationIdentifier && schema instanceof AugmentationTarget) {
return SchemaAwareApplyOperation.from(schema, (AugmentationTarget) schema, (AugmentationIdentifier) key, treeConfig);
}
final DataSchemaNode child = schema.getDataChildByName(key.getNodeType());
Preconditions.checkArgument(child != null, "Schema %s does not have a node for child %s", schema, key.getNodeType());
return SchemaAwareApplyOperation.from(child, treeConfig);
}
});
private final T schema;
private final DataTreeConfiguration treeConfig;
protected AbstractDataNodeContainerModificationStrategy(final T schema, final Class<? extends NormalizedNode<?, ?>> nodeClass, final DataTreeConfiguration treeConfig) {
super(nodeClass, treeConfig);
this.schema = Preconditions.checkNotNull(schema,"schema");
this.treeConfig = Preconditions.checkNotNull(treeConfig,"treeConfig");
}
protected final T getSchema() {
return schema;
}
@Override
public final Optional<ModificationApplyOperation> getChild(final PathArgument identifier) {
try {
return Optional.fromNullable(childCache.get(identifier));
} catch (ExecutionException | UncheckedExecutionException e) {
LOG.trace("Child {} not present in container schema {} children {}", identifier, this, schema.getChildNodes(), e.getCause());
return Optional.absent();
}
}
@Override
@SuppressWarnings("rawtypes")
protected abstract DataContainerNodeBuilder createBuilder(NormalizedNode<?, ?> original);
@Override
public String toString() {
return getClass().getSimpleName() + " [" + schema + "]";
}
}