com.ibm.jaql.io.hadoop.converter.ToJsonTextConverter.java Source code

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Here is the source code for com.ibm.jaql.io.hadoop.converter.ToJsonTextConverter.java

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/*
 * Copyright (C) IBM Corp. 2008.
 * 
 * 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 com.ibm.jaql.io.hadoop.converter;

import org.apache.hadoop.io.NullWritable;
import org.apache.hadoop.io.Text;
import org.apache.hadoop.io.WritableComparable;

import com.ibm.jaql.io.converter.FromJson;
import com.ibm.jaql.json.type.JsonUtil;
import com.ibm.jaql.json.type.JsonValue;
import com.ibm.jaql.util.FastPrintBuffer;

/**
 * 
 */
public class ToJsonTextConverter extends JsonToHadoopRecord<WritableComparable<?>, Text> {

    @Override
    protected FromJson<WritableComparable<?>> createKeyConverter() {
        return null;
    }

    /* (non-Javadoc)
     * @see com.ibm.jaql.io.hadoop.converter.ItemToHadoopRecord#createKeyTarget()
     */
    @Override
    public WritableComparable<?> createKeyTarget() {
        return NullWritable.get();
    };

    @Override
    protected FromJson<Text> createValueConverter() {
        return new FromJson<Text>() {
            public Text convert(JsonValue src, Text tgt) {
                FastPrintBuffer out = new FastPrintBuffer();
                try {
                    //JsonUtil.printQuoted(out, src.toJSON());
                    JsonUtil.print(out, src);
                    out.close();
                } catch (Exception e) {
                    throw new RuntimeException(e);
                }
                String s = out.toString();
                s = s.replace("\r", "");
                s = s.replace("\n", "");
                tgt.set(s);
                return tgt;
            }

            public Text createTarget() {
                return new Text();
            }
        };
    }
}