org.apache.hadoop.mapreduce.lib.db

类 BigDecimalSplitter

java.lang.Object

org.apache.hadoop.mapreduce.lib.db.BigDecimalSplitter

所有已实现的接口:

DBSplitter

直接已知子类:

TextSplitter

@InterfaceAudience.Public
@InterfaceStability.Evolving
public class BigDecimalSplitter
extends Object
implements DBSplitter

Implement DBSplitter over BigDecimal values.

构造器概要

构造器

构造器和说明
BigDecimalSplitter()

方法概要

方法

限定符和类型	方法和说明
List<InputSplit>	split(Configuration conf, ResultSet results, String colName) Given a ResultSet containing one record (and already advanced to that record) with two columns (a low value, and a high value, both of the same type), determine a set of splits that span the given values.
protected BigDecimal	tryDivide(BigDecimal numerator, BigDecimal denominator) Divide numerator by denominator.

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

BigDecimalSplitter

public BigDecimalSplitter()

方法详细资料

split

public List<InputSplit> split(Configuration conf,
                     ResultSet results,
                     String colName)
                       throws SQLException

从接口复制的说明: DBSplitter

Given a ResultSet containing one record (and already advanced to that record) with two columns (a low value, and a high value, both of the same type), determine a set of splits that span the given values.

指定者:

split 在接口中 DBSplitter

抛出:

SQLException

tryDivide

protected BigDecimal tryDivide(BigDecimal numerator,
                   BigDecimal denominator)

Divide numerator by denominator. If impossible in exact mode, use rounding.