org.apache.drill.exec.store.hbase

Class HBaseScanSpec

java.lang.Object

org.apache.drill.exec.store.hbase.HBaseScanSpec

All Implemented Interfaces:

DrillTableSelection

public class HBaseScanSpec
extends Object
implements DrillTableSelection

Field Summary

Fields

Modifier and Type	Field and Description
protected org.apache.hadoop.hbase.filter.Filter	filter
protected byte[]	startRow
protected byte[]	stopRow
protected String	tableName

Constructor Summary

Constructors

Constructor and Description
HBaseScanSpec(String tableName)
HBaseScanSpec(String tableName, byte[] startRow, byte[] stopRow, byte[] serializedFilter, String filterString)
HBaseScanSpec(String tableName, byte[] startRow, byte[] stopRow, org.apache.hadoop.hbase.filter.Filter filter)

Method Summary

Modifier and Type	Method and Description
String	digest() The digest of the selection represented by the implementation.
org.apache.hadoop.hbase.filter.Filter	getFilter()
byte[]	getSerializedFilter()
byte[]	getStartRow()
byte[]	getStopRow()
String	getTableName()
String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

tableName

protected String tableName

startRow

protected byte[] startRow

stopRow

protected byte[] stopRow

filter

protected org.apache.hadoop.hbase.filter.Filter filter

Constructor Detail

HBaseScanSpec

public HBaseScanSpec(String tableName,
                     byte[] startRow,
                     byte[] stopRow,
                     byte[] serializedFilter,
                     String filterString)

HBaseScanSpec

public HBaseScanSpec(String tableName,
                     byte[] startRow,
                     byte[] stopRow,
                     org.apache.hadoop.hbase.filter.Filter filter)

HBaseScanSpec

public HBaseScanSpec(String tableName)

Method Detail

getTableName

public String getTableName()

getStartRow

public byte[] getStartRow()

getStopRow

public byte[] getStopRow()

getFilter

public org.apache.hadoop.hbase.filter.Filter getFilter()

getSerializedFilter

public byte[] getSerializedFilter()

toString

public String toString()

Overrides:

toString in class Object

digest

public String digest()

Description copied from interface: DrillTableSelection

The digest of the selection represented by the implementation. The selections that accompany Tables can modify the contained dataset, e.g. a file selection can restrict to a subset of the available data and a format selection can include options that affect the behaviour of the underlying reader. Two scans will end up being considered identical during logical planning if their digests are the same so selection implementations should override this method so that exactly those scans that really are identical (in terms of the data they produce) have matching digests.

Specified by:

digest in interface DrillTableSelection

Returns:

this selection's digest, normally a string built from its properties.