org.apache.hadoop.hbase.regionserver.querymatcher

Class NormalUserScanQueryMatcher

java.lang.Object

org.apache.hadoop.hbase.regionserver.querymatcher.ScanQueryMatcher

org.apache.hadoop.hbase.regionserver.querymatcher.UserScanQueryMatcher

org.apache.hadoop.hbase.regionserver.querymatcher.NormalUserScanQueryMatcher

public abstract class NormalUserScanQueryMatcher
extends UserScanQueryMatcher

Query matcher for normal user scan.

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.hadoop.hbase.regionserver.querymatcher.ScanQueryMatcher

ScanQueryMatcher.MatchCode

Field Summary

Fields

Modifier and Type	Field and Description
protected boolean	seePastDeleteMarkers whether time range queries can see rows "behind" a delete

Fields inherited from class org.apache.hadoop.hbase.regionserver.querymatcher.UserScanQueryMatcher

filter, hasNullColumn, stopRow, tr

Fields inherited from class org.apache.hadoop.hbase.regionserver.querymatcher.ScanQueryMatcher

columns, currentRow, now, oldestUnexpiredTS, rowComparator, startKey

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	NormalUserScanQueryMatcher(Scan scan, ScanInfo scanInfo, ColumnTracker columns, boolean hasNullColumn, DeleteTracker deletes, long oldestUnexpiredTS, long now)

Method Summary

Modifier and Type	Method and Description
void	beforeShipped()
static NormalUserScanQueryMatcher	create(Scan scan, ScanInfo scanInfo, ColumnTracker columns, DeleteTracker deletes, boolean hasNullColumn, long oldestUnexpiredTS, long now)
protected boolean	isGet()
ScanQueryMatcher.MatchCode	match(Cell cell) Determines if the caller should do one of several things: seek/skip to the next row (MatchCode.SEEK_NEXT_ROW) seek/skip to the next column (MatchCode.SEEK_NEXT_COL) include the current KeyValue (MatchCode.INCLUDE) ignore the current KeyValue (MatchCode.SKIP) got to the next row (MatchCode.DONE)
protected void	reset()

Methods inherited from class org.apache.hadoop.hbase.regionserver.querymatcher.UserScanQueryMatcher

create, getFilter, getNextKeyHint, hasNullColumnInQuery, isUserScan, matchColumn, moreRowsMayExistAfter, moreRowsMayExistsAfter

Methods inherited from class org.apache.hadoop.hbase.regionserver.querymatcher.ScanQueryMatcher

checkDeleted, clearCurrentRow, compareKeyForNextColumn, compareKeyForNextRow, createStartKeyFromRow, currentRow, getKeyForNextColumn, getStartKey, getTrackers, preCheck, setToNewRow

Methods inherited from class java.lang.Object

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

Field Detail

seePastDeleteMarkers

protected final boolean seePastDeleteMarkers

whether time range queries can see rows "behind" a delete

Constructor Detail

NormalUserScanQueryMatcher

protected NormalUserScanQueryMatcher(Scan scan,
                                     ScanInfo scanInfo,
                                     ColumnTracker columns,
                                     boolean hasNullColumn,
                                     DeleteTracker deletes,
                                     long oldestUnexpiredTS,
                                     long now)

Method Detail

beforeShipped

public void beforeShipped()
                   throws java.io.IOException

Overrides:

beforeShipped in class UserScanQueryMatcher

Throws:

java.io.IOException

match

public ScanQueryMatcher.MatchCode match(Cell cell)
                                 throws java.io.IOException

Description copied from class: ScanQueryMatcher

Determines if the caller should do one of several things:

• seek/skip to the next row (MatchCode.SEEK_NEXT_ROW)
• seek/skip to the next column (MatchCode.SEEK_NEXT_COL)
• include the current KeyValue (MatchCode.INCLUDE)
• ignore the current KeyValue (MatchCode.SKIP)
• got to the next row (MatchCode.DONE)

Specified by:

match in class ScanQueryMatcher

Parameters:

cell - KeyValue to check

Returns:

The match code instance.

Throws:

java.io.IOException - in case there is an internal consistency problem caused by a data corruption.

reset

protected void reset()

Specified by:

reset in class ScanQueryMatcher

isGet

protected boolean isGet()

Specified by:

isGet in class UserScanQueryMatcher

create

public static NormalUserScanQueryMatcher create(Scan scan,
                                                ScanInfo scanInfo,
                                                ColumnTracker columns,
                                                DeleteTracker deletes,
                                                boolean hasNullColumn,
                                                long oldestUnexpiredTS,
                                                long now)
                                         throws java.io.IOException

Throws:

java.io.IOException