com.mr.SearchMapper.java Source code

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Here is the source code for com.mr.SearchMapper.java

Source

package com.mr;

import java.io.IOException;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.hbase.client.Result;
import org.apache.hadoop.hbase.io.ImmutableBytesWritable;
import org.apache.hadoop.hbase.mapreduce.TableMapper;
import org.apache.hadoop.hbase.util.Bytes;
import org.apache.hadoop.io.Text;

public class SearchMapper extends TableMapper<ImmutableBytesWritable, Text> {
    private static final Log LOG = LogFactory.getLog(SearchMapper.class);

    private static String TABLE_NAME = "tablename";
    private static byte[] FAMILY_NAME = Bytes.toBytes("cfname");
    private static byte[][] QUALIFIER_NAME = { Bytes.toBytes("col1"), Bytes.toBytes("col2"),
            Bytes.toBytes("col3") };

    private int numOfFilter = 0;

    private Text word = new Text();

    String[] strConditionStrings = new String[] { "", "", "" }/* { "C87310", "10", "2" } */;

    /* 
     * private void init(Configuration conf) throws IOException, 
     * InterruptedException { strConditionStrings[0] = 
     * conf.get("search.license").trim(); strConditionStrings[1] = 
     * conf.get("search.carColor").trim(); strConditionStrings[2] = 
     * conf.get("search.direction").trim(); LOG.info("license: " + 
     * strConditionStrings[0]); } 
     */
    protected void setup(Context context) throws IOException, InterruptedException {
        strConditionStrings[0] = context.getConfiguration().get("search.license").trim();
        strConditionStrings[1] = context.getConfiguration().get("search.color").trim();
        strConditionStrings[2] = context.getConfiguration().get("search.direction").trim();
    }

    protected void map(ImmutableBytesWritable key, Result value, Context context)
            throws InterruptedException, IOException {
        String string = "";
        String tempString;

        /**/
        for (int i = 0; i < 1; i++) {
            // /mapfilter  
            tempString = Text.decode(value.getValue(FAMILY_NAME, QUALIFIER_NAME[i]));
            if (tempString.equals(/* strConditionStrings[i] */"C87310")) {
                LOG.info("C87310. conf: " + strConditionStrings[0]);
                if (tempString.equals(strConditionStrings[i])) {
                    string = string + tempString + " ";
                } else {
                    return;
                }
            }

            else {
                return;
            }
        }

        word.set(string);
        context.write(null, word);
    }
}