com.hazelcast.jet.pipeline.StreamSource Maven / Gradle / Ivy
/*
* Copyright (c) 2008-2018, Hazelcast, Inc. All Rights Reserved.
*
* 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.hazelcast.jet.pipeline;
import javax.annotation.Nonnull;
/**
* Represents an infinite source of data for a Jet pipeline. To aggregate
* the data from an infinite source, you must specify how to {@link
* StreamStage#window window} it into finite subsets over which Jet will
* perform the aggregation.
*
* @see Sources source factory methods
*
* @param the stream item type
*/
public interface StreamSource {
/**
* Returns a descriptive name of this source.
*/
@Nonnull
String name();
}