/**
* Copyright 2011-2017 Asakusa Framework Team.
*
* 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 com.asakusafw.vocabulary.flow;
import com.asakusafw.vocabulary.flow.graph.FlowElementOutput;
/**
* Represents an abstract data source for downstream operators and flow outputs.
* @param <T> the data model type
*/
public interface Source<T> {
/**
* Returns the internal port representation of this source element.
* Application developers should not use this method directly.
* @return the internal port representation
*/
FlowElementOutput toOutputPort();
}