/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. 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.
*/
package org.apache.usergrid.persistence.graph.impl.stage;
import java.util.UUID;
import org.apache.usergrid.persistence.core.scope.ApplicationScope;
import org.apache.usergrid.persistence.graph.MarkedEdge;
import rx.Observable;
/**
* Interface to perform repair operations on an edge when it is written
*/
public interface EdgeDeleteRepair {
/**
* Repair this edge. Remove previous entries
* @param scope The scope to use
* @param edge The last edge to retain. All versions <= this edge's version will be deleted
* @param timestamp The timestamp this operation was performed
*
* @return An observable that emits every version of the edge we delete. Note that it may emit duplicates
* since this is a streaming API.
*/
public Observable<MarkedEdge> repair( ApplicationScope scope, MarkedEdge edge, UUID timestamp );
}