kafka DoubleDeserializer 源码
kafka DoubleDeserializer 代码
文件路径：/clients/src/main/java/org/apache/kafka/common/serialization/DoubleDeserializer.java
/*
* 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.kafka.common.serialization;
import org.apache.kafka.common.errors.SerializationException;
public class DoubleDeserializer implements Deserializer<Double> {
@Override
public Double deserialize(String topic, byte[] data) {
if (data == null)
return null;
if (data.length != 8) {
throw new SerializationException("Size of data received by Deserializer is not 8");
}
long value = 0;
for (byte b : data) {
value <<= 8;
value |= b & 0xFF;
}
return Double.longBitsToDouble(value);
}
}
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