Read and print (HBase)

Read and print a row.

Code sample

Java

To learn how to install and use the client library for Bigtable, see Bigtable client libraries.


import com.google.cloud.bigtable.hbase.BigtableConfiguration;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import org.apache.hadoop.hbase.Cell;
import org.apache.hadoop.hbase.TableName;
import org.apache.hadoop.hbase.client.Connection;
import org.apache.hadoop.hbase.client.Get;
import org.apache.hadoop.hbase.client.Result;
import org.apache.hadoop.hbase.client.ResultScanner;
import org.apache.hadoop.hbase.client.Scan;
import org.apache.hadoop.hbase.client.Table;
import org.apache.hadoop.hbase.filter.CompareFilter.CompareOp;
import org.apache.hadoop.hbase.filter.Filter;
import org.apache.hadoop.hbase.filter.MultiRowRangeFilter;
import org.apache.hadoop.hbase.filter.MultiRowRangeFilter.RowRange;
import org.apache.hadoop.hbase.filter.RegexStringComparator;
import org.apache.hadoop.hbase.filter.ValueFilter;
import org.apache.hadoop.hbase.util.Bytes;


public class Reads {

  // Write your code here.
  // ...

  private static void printRow(Result row) {
    System.out.printf("Reading data for %s%n", Bytes.toString(row.rawCells()[0].getRowArray()));
    String colFamily = "";
    for (Cell cell : row.rawCells()) {
      String currentFamily = Bytes.toString(cell.getFamilyArray());
      if (!currentFamily.equals(colFamily)) {
        colFamily = currentFamily;
        System.out.printf("Column Family %s%n", colFamily);
      }
      System.out.printf(
          "\t%s: %s @%s%n",
          Bytes.toString(cell.getQualifierArray()),
          Bytes.toString(cell.getValueArray()),
          cell.getTimestamp());
    }
    System.out.println();
  }
}

What's next

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