/*
* 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
*
* 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.streams.core;
import java.util.List;
public interface StreamsProcessor extends StreamsOperation {
/**
* Process/Analyze the {@link org.apache.streams.core.StreamsDatum} and return the the StreamsDatums that will
* passed to every down stream operation that reads from this processor.
* @param entry StreamsDatum to be processed
* @return resulting StreamDatums from processing. Should never be null or contain null object. Empty list OK.
*/
List<StreamsDatum> process( StreamsDatum entry );
}