org.apache.hadoop.mapreduce.lib.db
Class BigDecimalSplitter
java.lang.Object
org.apache.hadoop.mapreduce.lib.db.BigDecimalSplitter
- All Implemented Interfaces:
- DBSplitter
- Direct Known Subclasses:
- TextSplitter
public class BigDecimalSplitter
- extends java.lang.Object
- implements DBSplitter
Implement DBSplitter over BigDecimal values.
Method Summary |
java.util.List<InputSplit> |
split(org.apache.hadoop.conf.Configuration conf,
java.sql.ResultSet results,
java.lang.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 java.math.BigDecimal |
tryDivide(java.math.BigDecimal numerator,
java.math.BigDecimal denominator)
Divide numerator by denominator. |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
BigDecimalSplitter
public BigDecimalSplitter()
split
public java.util.List<InputSplit> split(org.apache.hadoop.conf.Configuration conf,
java.sql.ResultSet results,
java.lang.String colName)
throws java.sql.SQLException
- Description copied from interface:
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.
- Specified by:
split
in interface DBSplitter
- Throws:
java.sql.SQLException
tryDivide
protected java.math.BigDecimal tryDivide(java.math.BigDecimal numerator,
java.math.BigDecimal denominator)
- Divide numerator by denominator. If impossible in exact mode, use rounding.
Copyright © 2009 The Apache Software Foundation