/*
* 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.flink.test.classloading.jar;
import java.util.StringTokenizer;
import org.apache.flink.api.common.functions.FlatMapFunction;
import org.apache.flink.streaming.api.datastream.DataStream;
import org.apache.flink.streaming.api.environment.StreamExecutionEnvironment;
import org.apache.flink.streaming.api.functions.sink.SinkFunction;
import org.apache.flink.test.testdata.WordCountData;
import org.apache.flink.util.Collector;
@SuppressWarnings("serial")
public class StreamingProgram {
public static void main(String[] args) throws Exception {
StreamExecutionEnvironment env = StreamExecutionEnvironment.getExecutionEnvironment();
env.getConfig().disableSysoutLogging();
DataStream<String> text = env.fromElements(WordCountData.TEXT).rebalance();
DataStream<Word> counts =
text.flatMap(new Tokenizer()).keyBy("word").sum("frequency");
counts.addSink(new NoOpSink());
env.execute();
}
// --------------------------------------------------------------------------------------------
public static class Word {
private String word;
private Integer frequency;
public Word() {
}
public Word(String word, int i) {
this.word = word;
this.frequency = i;
}
public String getWord() {
return word;
}
public void setWord(String word) {
this.word = word;
}
public Integer getFrequency() {
return frequency;
}
public void setFrequency(Integer frequency) {
this.frequency = frequency;
}
@Override
public String toString() {
return "(" + word + ", " + frequency + ")";
}
}
public static class Tokenizer implements FlatMapFunction<String, Word>{
@Override
public void flatMap(String value, Collector<Word> out) throws Exception {
StringTokenizer tokenizer = new StringTokenizer(value);
while (tokenizer.hasMoreTokens()){
out.collect(new Word(tokenizer.nextToken(), 1));
}
}
}
public static class NoOpSink implements SinkFunction<Word>{
@Override
public void invoke(Word value) throws Exception {
}
}
}