MutateRowExample.java

package client;

// cc MutateRowExample Modifies a row with multiple operations
import java.io.IOException;

import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.hbase.HBaseConfiguration;
import org.apache.hadoop.hbase.TableName;
import org.apache.hadoop.hbase.client.Connection;
import org.apache.hadoop.hbase.client.ConnectionFactory;
import org.apache.hadoop.hbase.client.Delete;
import org.apache.hadoop.hbase.client.Put;
import org.apache.hadoop.hbase.client.RowMutations;
import org.apache.hadoop.hbase.client.Table;
import org.apache.hadoop.hbase.util.Bytes;

import util.HBaseHelper;

public class MutateRowExample {

  public static void main(String[] args) throws IOException {
    Configuration conf = HBaseConfiguration.create();

    HBaseHelper helper = HBaseHelper.getHelper(conf);
    helper.dropTable("testtable");
    helper.createTable("testtable", 3, "colfam1");
    helper.put("testtable",
      new String[] { "row1" },
      new String[] { "colfam1" },
      new String[] { "qual1", "qual2", "qual3" },
      new long[]   { 1, 2, 3 },
      new String[] { "val1", "val2", "val3" });
    System.out.println("Before delete call...");
    helper.dump("testtable", new String[]{"row1"}, null, null);

    Connection connection = ConnectionFactory.createConnection(conf);
    Table table = connection.getTable(TableName.valueOf("testtable"));

    // vv MutateRowExample
    Put put = new Put(Bytes.toBytes("row1"));
    put.addColumn(Bytes.toBytes("colfam1"), Bytes.toBytes("qual1"),
      4, Bytes.toBytes("val99"));
    put.addColumn(Bytes.toBytes("colfam1"), Bytes.toBytes("qual4"),
      4, Bytes.toBytes("val100"));

    Delete delete = new Delete(Bytes.toBytes("row1"));
    delete.addColumn(Bytes.toBytes("colfam1"), Bytes.toBytes("qual2"));

    RowMutations mutations = new RowMutations(Bytes.toBytes("row1"));
    mutations.add(put);
    mutations.add(delete);

    table.mutateRow(mutations);
    // ^^ MutateRowExample
    table.close();
    connection.close();
    System.out.println("After mutate call...");
    helper.dump("testtable", new String[] { "row1" }, null, null);
    helper.close();
  }
}