@InterfaceAudience.Public
@InterfaceStability.Stable
public class FirstKeyOnlyFilter
extends org.apache.hadoop.hbase.filter.FilterBase
This filter can be used to more efficiently perform row count operations.
Filter.ReturnCode
Constructor and Description |
---|
FirstKeyOnlyFilter() |
Modifier and Type | Method and Description |
---|---|
static Filter |
createFilterFromArguments(ArrayList<byte[]> filterArguments) |
Filter.ReturnCode |
filterKeyValue(Cell v)
Filters that dont filter by key value can inherit this implementation that
includes all Cells.
|
protected boolean |
hasFoundKV() |
static FirstKeyOnlyFilter |
parseFrom(byte[] pbBytes) |
void |
reset()
Filters that are purely stateless and do nothing in their reset() methods can inherit
this null/empty implementation.
|
protected void |
setFoundKV(boolean value) |
byte[] |
toByteArray()
Return length 0 byte array for Filters that don't require special serialization
|
filterAllRemaining, filterRow, filterRow, filterRowCells, filterRowKey, getNextCellHint, getNextKeyHint, hasFilterRow, isFamilyEssential, toString, transform, transformCell
isReversed, setReversed
public void reset()
org.apache.hadoop.hbase.filter.FilterBase
reset
in class org.apache.hadoop.hbase.filter.FilterBase
public Filter.ReturnCode filterKeyValue(Cell v)
org.apache.hadoop.hbase.filter.FilterBase
filterKeyValue
in class org.apache.hadoop.hbase.filter.FilterBase
v
- the Cell in questionFilter.ReturnCode
public static Filter createFilterFromArguments(ArrayList<byte[]> filterArguments)
protected boolean hasFoundKV()
protected void setFoundKV(boolean value)
value
- update foundKV
flag with value.public byte[] toByteArray()
org.apache.hadoop.hbase.filter.FilterBase
toByteArray
in class org.apache.hadoop.hbase.filter.FilterBase
public static FirstKeyOnlyFilter parseFrom(byte[] pbBytes) throws org.apache.hadoop.hbase.exceptions.DeserializationException
pbBytes
- A pb serialized FirstKeyOnlyFilter
instanceFirstKeyOnlyFilter
made from bytes
org.apache.hadoop.hbase.exceptions.DeserializationException
toByteArray()
Copyright © 2015 The Apache Software Foundation. All rights reserved.