/**
* 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.python.api.functions.util;
import org.apache.flink.api.common.functions.MapFunction;
import org.apache.flink.python.api.streaming.util.SerializationUtils;
import org.apache.flink.python.api.streaming.util.SerializationUtils.Serializer;
/*
Utility function to serialize values, usually directly from data sources.
*/
public class SerializerMap<IN> implements MapFunction<IN, byte[]> {
private transient Serializer<IN> serializer;
@Override
@SuppressWarnings("unchecked")
public byte[] map(IN value) throws Exception {
if (serializer == null) {
serializer = SerializationUtils.getSerializer(value);
}
return serializer.serialize(value);
}
}