co.cask.cdap.template.etl.common.StructuredRecordSerializer.java Source code

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Here is the source code for co.cask.cdap.template.etl.common.StructuredRecordSerializer.java

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/*
 * Copyright  2015 Cask Data, Inc.
 *
 * Licensed 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 co.cask.cdap.template.etl.common;

import co.cask.cdap.api.data.format.StructuredRecord;
import co.cask.cdap.api.data.schema.Schema;
import com.google.gson.JsonElement;
import com.google.gson.JsonObject;
import com.google.gson.JsonSerializationContext;
import com.google.gson.JsonSerializer;

import java.lang.reflect.Type;

/**
 * Serializes the fields of a StructuredRecord as a JsonObject.
 */
public class StructuredRecordSerializer implements JsonSerializer<StructuredRecord> {

    @Override
    public JsonElement serialize(StructuredRecord src, Type typeOfSrc, JsonSerializationContext context) {
        JsonObject obj = new JsonObject();
        for (Schema.Field field : src.getSchema().getFields()) {
            obj.add(field.getName(), context.serialize(src.get(field.getName())));
        }
        return obj;
    }
}