/*
* 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.api.schema;
import com.google.common.base.Optional;
import java.util.Collection;
import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.PathArgument;
/**
* Node which is not leaf, but has child {@link NormalizedNode}s as its valzue.
*
*
* NormalizedNodeContainer does not have a value, but it has a child
* nodes. Definition of possible and valid child nodes is introduced
* in subclasses of this interface.
*
* This interface should not be used directly, but rather use of of derived subinterfaces
* such as {@link DataContainerNode}, {@link MapNode}, {@link LeafSetNode}.
*
* @param <I>
* Node Identifier type
* @param <K>
* Child Node Identifier type
* @param <V>
* Child Node type
*/
public interface NormalizedNodeContainer<I extends PathArgument, K extends PathArgument, V extends NormalizedNode<? extends K, ?>>
extends NormalizedNode<I, Collection<V>> {
@Override
I getIdentifier();
/**
* Returns immutable iteration of child nodes of this node.
*
*/
@Override
Collection<V> getValue();
/**
* Returns child node identified by provided key.
*
* @param child
* Path argument identifying child node
* @return Optional with child node if child exists.
* {@link Optional#absent()} if child does not exists.
*/
Optional<V> getChild(K child);
}