org.apache.hadoop.hbase.filter

类 SubstringComparator

java.lang.Object

org.apache.hadoop.hbase.filter.ByteArrayComparable

org.apache.hadoop.hbase.filter.SubstringComparator

所有已实现的接口:

Comparable<byte[]>

@InterfaceAudience.Public
public class SubstringComparator
extends ByteArrayComparable

This comparator is for use with SingleColumnValueFilter, for filtering based on the value of a given column. Use it to test if a given substring appears in a cell value in the column. The comparison is case insensitive.

Only EQUAL or NOT_EQUAL tests are valid with this comparator.

For example:

 SingleColumnValueFilter scvf =
   new SingleColumnValueFilter("col", CompareOp.EQUAL,
     new SubstringComparator("substr"));
 

构造器概要

构造器

构造器和说明
SubstringComparator(String substr) Constructor

方法概要

限定符和类型	方法和说明
int	compareTo(byte[] value, int offset, int length)
byte[]	getValue()
static SubstringComparator	parseFrom(byte[] pbBytes)
byte[]	toByteArray()

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

compareTo, compareTo

从类继承的方法 java.lang.Object

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

构造器详细资料

SubstringComparator

public SubstringComparator(String substr)

Constructor

参数:

substr - the substring

方法详细资料

getValue

public byte[] getValue()

覆盖:

getValue 在类中 ByteArrayComparable

compareTo

public int compareTo(byte[] value,
                     int offset,
                     int length)

指定者:

compareTo 在类中 ByteArrayComparable

toByteArray

public byte[] toByteArray()

指定者:

toByteArray 在类中 ByteArrayComparable

返回:

The comparator serialized using pb

parseFrom

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

参数:

pbBytes - A pb serialized SubstringComparator instance

返回:

An instance of SubstringComparator made from bytes

抛出:

DeserializationException

另请参阅:

toByteArray()