hadoop DefaultRumenSerializer 源码
haddop DefaultRumenSerializer 代码
文件路径：/hadoop-tools/hadoop-rumen/src/main/java/org/apache/hadoop/tools/rumen/serializers/DefaultRumenSerializer.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.hadoop.tools.rumen.serializers;
import java.io.IOException;
import com.fasterxml.jackson.core.JsonGenerator;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.JsonSerializer;
import com.fasterxml.jackson.databind.SerializerProvider;
import org.apache.hadoop.tools.rumen.datatypes.DataType;
/**
* Default Rumen JSON serializer.
*/
@SuppressWarnings("unchecked")
public class DefaultRumenSerializer extends JsonSerializer<DataType> {
public void serialize(DataType object, JsonGenerator jGen, SerializerProvider sProvider)
throws IOException, JsonProcessingException {
Object data = object.getValue();
if (data instanceof String) {
jGen.writeString(data.toString());
} else {
jGen.writeObject(data);
}
};
}
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