org.apache.hadoop.hbase.filter

类 FamilyFilter

java.lang.Object

org.apache.hadoop.hbase.filter.Filter

org.apache.hadoop.hbase.filter.FilterBase

org.apache.hadoop.hbase.filter.CompareFilter

org.apache.hadoop.hbase.filter.FamilyFilter

@InterfaceAudience.Public
@InterfaceStability.Stable
public class FamilyFilter
extends CompareFilter

This filter is used to filter based on the column family. It takes an operator (equal, greater, not equal, etc) and a byte [] comparator for the column family portion of a key.

This filter can be wrapped with WhileMatchFilter and SkipFilter to add more control.

Multiple filters can be combined using FilterList.

If an already known column family is looked for, use Get.addFamily(byte[]) directly rather than a filter.

嵌套类概要

从类继承的嵌套类/接口 org.apache.hadoop.hbase.filter.CompareFilter

CompareFilter.CompareOp

从类继承的嵌套类/接口 org.apache.hadoop.hbase.filter.Filter

Filter.ReturnCode

字段概要

从类继承的字段 org.apache.hadoop.hbase.filter.CompareFilter

comparator, compareOp

从类继承的字段 org.apache.hadoop.hbase.filter.Filter

reversed

构造器概要

构造器

构造器和说明
FamilyFilter(CompareFilter.CompareOp familyCompareOp, ByteArrayComparable familyComparator) Constructor.

方法概要

方法

限定符和类型	方法和说明
static Filter	createFilterFromArguments(ArrayList<byte[]> filterArguments)
Filter.ReturnCode	filterKeyValue(org.apache.hadoop.hbase.Cell v) A way to filter based on the column family, column qualifier and/or the column value.
static FamilyFilter	parseFrom(byte[] pbBytes)
byte[]	toByteArray() Return length 0 byte array for Filters that don't require special serialization

从类继承的方法 org.apache.hadoop.hbase.filter.CompareFilter

doCompare, extractArguments, getComparator, getOperator, toString, transformCell

从类继承的方法 org.apache.hadoop.hbase.filter.FilterBase

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

从类继承的方法 org.apache.hadoop.hbase.filter.Filter

isReversed, setReversed

从类继承的方法 java.lang.Object

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

构造器详细资料

FamilyFilter

public FamilyFilter(CompareFilter.CompareOp familyCompareOp,
            ByteArrayComparable familyComparator)

Constructor.

参数:

familyCompareOp - the compare op for column family matching

familyComparator - the comparator for column family matching

方法详细资料

filterKeyValue

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

从类复制的说明: Filter

A way to filter based on the column family, column qualifier and/or the column value. Return code is described below. This allows filters to filter only certain number of columns, then terminate without matching ever column. If filterRowKey returns true, filterKeyValue needs to be consistent with it. filterKeyValue can assume that filterRowKey has already been called for the row. If your filter returns ReturnCode.NEXT_ROW, it should return ReturnCode.NEXT_ROW until Filter.reset() is called just in case the caller calls for the next row. Concrete implementers can signal a failure condition in their code by throwing an IOException.

指定者:

filterKeyValue 在类中 Filter

参数:

v - the Cell in question

返回:

code as described below

另请参阅:

Filter.ReturnCode

createFilterFromArguments

public static Filter createFilterFromArguments(ArrayList<byte[]> filterArguments)

toByteArray

public byte[] toByteArray()

从类复制的说明: FilterBase

Return length 0 byte array for Filters that don't require special serialization

覆盖:

toByteArray 在类中 FilterBase

返回:

The filter serialized using pb

parseFrom

public static FamilyFilter parseFrom(byte[] pbBytes)
                              throws DeserializationException

参数:

pbBytes - A pb serialized FamilyFilter instance

返回:

An instance of FamilyFilter made from bytes

抛出:

DeserializationException

另请参阅:

toByteArray()