/*
 *
 *  * Licensed to the Apache Software Foundation (ASF) under one or more
 *  *  contributor license agreements.  The ASF licenses this file to You
 *  * under the Apache License, Version 2.0 (the "License"); you may not
 *  * use this file except in compliance with the License.
 *  * You may obtain a copy of the License at
 *  *
 *  *     http://www.apache.org/licenses/LICENSE-2.0
 *  *
 *  * Unless required by applicable law or agreed to in writing, software
 *  * distributed under the License is distributed on an "AS IS" BASIS,
 *  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  * See the License for the specific language governing permissions and
 *  * limitations under the License.  For additional information regarding
 *  * copyright in this work, please see the NOTICE file in the top level
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package org.apache.usergrid.persistence.graph.serialization;

import org.apache.usergrid.persistence.graph.GraphManager;
import org.apache.usergrid.persistence.model.entity.Id;
import rx.Observable;

/**
 * Emits the id of all nodes that are target nodes from the given source node
 */
public interface TargetIdObservable {
    /**
     * Get all nodes that are target nodes from the sourceNode
     * @param gm
     * @param sourceNode
     *
     * @return
     */
    Observable<Id> getTargetNodes(GraphManager gm, Id sourceNode);
}