oracle.pg.hbase

Class OracleAdjacentElementsFilter

java.lang.Object

org.apache.hadoop.hbase.filter.Filter

org.apache.hadoop.hbase.filter.FilterBase

org.apache.hadoop.hbase.filter.CompareFilter

oracle.pg.hbase.OracleAdjacentElementsFilter

public class OracleAdjacentElementsFilter
extends org.apache.hadoop.hbase.filter.CompareFilter

This class extends HBase CompareFilter to filter cells based on a specified qualifier and having a qualifier length greater than 0.

Nested Class Summary

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

org.apache.hadoop.hbase.filter.CompareFilter.CompareOp

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

org.apache.hadoop.hbase.filter.Filter.ReturnCode

Constructor Summary

Constructors

Constructor and Description
OracleAdjacentElementsFilter(org.apache.hadoop.hbase.filter.CompareFilter.CompareOp op, org.apache.hadoop.hbase.filter.ByteArrayComparable qualifierComparator) Creates a new instance of an OracleAdjacentElementsFilter used in getVertices/getEdges operations.

Method Summary

Modifier and Type	Method and Description
static org.apache.hadoop.hbase.filter.Filter	createFilterFromArguments(ArrayList<byte[]> filterArguments) Given the filter's arguments construct an instance of Filter.
org.apache.hadoop.hbase.filter.Filter.ReturnCode	filterKeyValue(org.apache.hadoop.hbase.Cell c) Filter the row if the K/V pair is not found in the row data.
static OracleAdjacentElementsFilter	parseFrom(byte[] pbBytes)
byte[]	toByteArray() Write filter's info as a byte array

Methods inherited from class org.apache.hadoop.hbase.filter.CompareFilter

extractArguments, getComparator, getOperator, toString

Methods inherited from class org.apache.hadoop.hbase.filter.FilterBase

filterAllRemaining, filterRow, filterRow, filterRowCells, filterRowKey, getNextCellHint, getNextKeyHint, hasFilterRow, isFamilyEssential, reset, transform, transformCell

Methods inherited from class org.apache.hadoop.hbase.filter.Filter

isReversed, setReversed

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

OracleAdjacentElementsFilter

public OracleAdjacentElementsFilter(org.apache.hadoop.hbase.filter.CompareFilter.CompareOp op,
                                    org.apache.hadoop.hbase.filter.ByteArrayComparable qualifierComparator)

Creates a new instance of an OracleAdjacentElementsFilter used in getVertices/getEdges operations.

Parameters:

op - the compare op for row matching

qualifierComparator - the comparator for row matching

Method Detail

createFilterFromArguments

public static org.apache.hadoop.hbase.filter.Filter createFilterFromArguments(ArrayList<byte[]> filterArguments)

Given the filter's arguments construct an instance of Filter.

Parameters:

filterArguments - the filter's arguments.

Returns:

an instance of Filter

filterKeyValue

public org.apache.hadoop.hbase.filter.Filter.ReturnCode filterKeyValue(org.apache.hadoop.hbase.Cell c)

Filter the row if the K/V pair is not found in the row data.

Overrides:

filterKeyValue in class org.apache.hadoop.hbase.filter.FilterBase

Parameters:

c - the cell in question

Returns:

a ReturnCode instance (can be either ReturnCode.INCLUDE or ReturnCode.SKIP)

parseFrom

public static OracleAdjacentElementsFilter parseFrom(byte[] pbBytes)
                                              throws org.apache.hadoop.hbase.exceptions.DeserializationException

Throws:

org.apache.hadoop.hbase.exceptions.DeserializationException

toByteArray

public byte[] toByteArray()
                   throws IOException

Write filter's info as a byte array

Overrides:

toByteArray in class org.apache.hadoop.hbase.filter.FilterBase

Returns:

the byte array representation of the filter's info

Throws:

IOException