io.cdap.cdap.pipeline.Stage Maven / Gradle / Ivy
/*
* Copyright © 2014 Cask Data, Inc.
*
* Licensed 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 io.cdap.cdap.pipeline;
/**
* A Stage represents a set of tasks that can be performed on objects,
* and methods used to communicate with other stages in a {@link Pipeline}.
*/
public interface Stage {
/**
* Implementation of this method should atomically process a single data
* object and transfer any objects generated to downstream for processing.
*
* @param ctx
*/
void process(Context ctx) throws Exception;
}