org.apache.hadoop.hbase

Class CellComparator.MetaCellComparator

java.lang.Object

org.apache.hadoop.hbase.CellComparator

org.apache.hadoop.hbase.CellComparator.MetaCellComparator

All Implemented Interfaces:

Serializable, Comparator<Cell>

Enclosing class:

CellComparator

public static class CellComparator.MetaCellComparator
extends CellComparator

A CellComparator for hbase:meta catalog table KeyValues.

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.hadoop.hbase.CellComparator

CellComparator.MetaCellComparator, CellComparator.RowComparator

Field Summary

Fields inherited from class org.apache.hadoop.hbase.CellComparator

COMPARATOR, META_COMPARATOR

Constructor Summary

Constructors

Constructor and Description
MetaCellComparator()

Method Summary

Modifier and Type	Method and Description
int	compareRows(Cell left, byte[] right, int roffset, int rlength) Compares the row part of the cell with a simple plain byte[] like the stopRow in Scan.
int	compareRows(Cell left, Cell right) Compares the rows of the left and right cell.

Methods inherited from class org.apache.hadoop.hbase.CellComparator

compare, compare, compareColumns, compareFamilies, compareFamily, compareKeyBasedOnColHint, compareKeyIgnoresMvcc, compareQualifier, compareQualifiers, compareQualifiers, compareRow, compareTimestamps, compareTimestamps, compareValue, compareWithoutRow

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface java.util.Comparator

comparing, comparing, comparingDouble, comparingInt, comparingLong, equals, naturalOrder, nullsFirst, nullsLast, reversed, reverseOrder, thenComparing, thenComparing, thenComparing, thenComparingDouble, thenComparingInt, thenComparingLong

Constructor Detail

MetaCellComparator

public MetaCellComparator()

Method Detail

compareRows

public int compareRows(Cell left,
                       Cell right)

Description copied from class: CellComparator

Compares the rows of the left and right cell. For the hbase:meta case this method is overridden such that it can handle hbase:meta cells. The caller should ensure using the appropriate comparator for hbase:meta.

Overrides:

compareRows in class CellComparator

Returns:

0 if both cells are equal, 1 if left cell is bigger than right, -1 otherwise

compareRows

public int compareRows(Cell left,
                       byte[] right,
                       int roffset,
                       int rlength)

Description copied from class: CellComparator

Compares the row part of the cell with a simple plain byte[] like the stopRow in Scan. This should be used with context where for hbase:meta cells the {CellComparator.META_COMPARATOR should be used

Overrides:

compareRows in class CellComparator

Parameters:

left - the cell to be compared

right - the kv serialized byte[] to be compared with

roffset - the offset in the byte[]

rlength - the length in the byte[]

Returns:

0 if both cell and the byte[] are equal, 1 if the cell is bigger than byte[], -1 otherwise