org.chombo.util.TextTuple.java Source code

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Here is the source code for org.chombo.util.TextTuple.java

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/*
 * chombo: Hadoop Map Reduce utility
 * Author: Pranab Ghosh
 * 
 * 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 org.chombo.util;

import org.apache.hadoop.io.Text;

/**
 * Tuple encoded in Text
 * @author pranab
 *
 */
public class TextTuple extends Text {
    private static final String DELIM = ",";
    private String[] items;
    private String fieldDelim = DELIM;

    /**
     * constructor
     */
    public TextTuple() {
        super();
    }

    /**
     * constructor
     * @param utf8
     */
    public TextTuple(byte[] utf8) {
        super(utf8);
    }

    /**
     * constructor
     * @param string
     */
    public TextTuple(String string) {
        super(string);
    }

    /**
     * constructor
     * @param utf8
     */
    public TextTuple(Text utf8) {
        super(utf8);
    }

    /**
     * @param fieldDelim
     */
    public void setFieldDelim(String fieldDelim) {
        this.fieldDelim = fieldDelim;
    }

    /**
     * add one or more elements
     * @param fieldList
     */
    public void add(Object... fieldList) {
        StringBuilder stBld = new StringBuilder();
        for (Object field : fieldList) {
            stBld.append(field).append(fieldDelim);
        }
        this.set(stBld.substring(0, stBld.length() - 1));
    }

    /**
     * splits into tokens
     */
    public void prepareForRead() {
        items = this.toString().split(fieldDelim);
    }

    /**
     * @param index
     * @return
     */
    public String getString(int index) {
        return items[index];
    }

    /**
     * @param index
     * @return
     */
    public int getInt(int index) {
        return Integer.parseInt(items[index]);
    }

    /**
     * @param index
     * @return
     */
    public long getLong(int index) {
        return Long.parseLong(items[index]);
    }

    /**
     * @param index
     * @return
     */
    public double getDouble(int index) {
        return Double.parseDouble(items[index]);
    }

    public void initialize() {
        this.clear();
        items = null;
    }
}