/*
* 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.corepersistence.pipeline;
import org.apache.usergrid.corepersistence.pipeline.PipelineContext;
import org.apache.usergrid.corepersistence.pipeline.read.FilterResult;
import rx.Observable;
/**
* Interface for filtering commands. All filters must take an observable of Id's as an input. Output is then determined by subclasses.
* This takes an input of Id, performs some operation, and emits values for further processing in the Observable
* pipeline
* @param <T> The input type of the filter value
* @param <R> The output type of the filter value
*/
public interface PipelineOperation<T, R> extends Observable.Transformer<T, R> {
void setContext(final PipelineContext pipelineContext);
}