com.nhncorp.neptune.tabletserver
Class TabletScanner

java.lang.Object
  com.nhncorp.neptune.tabletserver.TabletScanner

public class TabletScanner
extends java.lang.Object

Field Summary

static org.apache.commons.logging.Log	LOG
static java.util.Random	rand

Constructor Summary

TabletScanner(java.lang.String scannerId, NConfiguration conf, TabletInfo tabletInfo, Row.Key startRowKey, Row.Key endRowKey, java.lang.String columnName, MemorySSTableIF memorySSTable, DiskSSTableIF diskSSTable, CellFilter columnFilter, int numOfVersion)

Method Summary

void	close()
static java.lang.String	generateScannerId(TabletInfo tabletInfo)
java.lang.String	getScannerId()
ColumnValue[]	next() 한번에 여러개의 결과를 반환한다.

Methods inherited from class java.lang.Object

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

Field Detail

LOG

public static final org.apache.commons.logging.Log LOG

rand

public static java.util.Random rand

Constructor Detail

TabletScanner

public TabletScanner(java.lang.String scannerId,
                     NConfiguration conf,
                     TabletInfo tabletInfo,
                     Row.Key startRowKey,
                     Row.Key endRowKey,
                     java.lang.String columnName,
                     MemorySSTableIF memorySSTable,
                     DiskSSTableIF diskSSTable,
                     CellFilter columnFilter,
                     int numOfVersion)
              throws java.io.IOException

Throws:

java.io.IOException

Method Detail

next

public ColumnValue[] next()
                   throws java.io.IOException

한번에 여러개의 결과를 반환한다. 이것은 클라이언트 모듈에서 cache로 저장되어 서버와의 접속 횟수를 줄여준다.

Returns:

Throws:

java.io.IOException

getScannerId

public java.lang.String getScannerId()

close

public void close()
           throws java.io.IOException

Throws:

java.io.IOException

generateScannerId

public static java.lang.String generateScannerId(TabletInfo tabletInfo)