Package org.apache.drill.exec.udfs

Class PhoneticFunctions.DaitchMokotoffFunction

java.lang.Object

org.apache.drill.exec.udfs.PhoneticFunctions.DaitchMokotoffFunction

All Implemented Interfaces:

DrillFunc, DrillSimpleFunc

Enclosing class:

PhoneticFunctions

public static class PhoneticFunctions.DaitchMokotoffFunction
extends Object
implements DrillSimpleFunc

Encodes a string into a Daitch-Mokotoff Soundex value. The Daitch-Mokotoff Soundex algorithm is a refinement of the Russel and American Soundex algorithms, yielding greater accuracy in matching especially Slavish and Yiddish surnames with similar pronunciation but differences in spelling.

The main differences compared to the other soundex variants are: coded names are 6 digits long the initial character of the name is coded rules to encoded multi-character n-grams multiple possible encodings for the same name (branching)

Usage: SELECT dm_soundex( string ) FROM...

Constructor Summary

Constructors

Constructor	Description
DaitchMokotoffFunction()

Method Summary

Modifier and Type	Method	Description
void	eval()
void	setup()

Methods inherited from class java.lang.Object

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

Constructor Details

DaitchMokotoffFunction

public DaitchMokotoffFunction()

Method Details

setup

public void setup()

Specified by:

setup in interface DrillSimpleFunc

eval

public void eval()

Specified by:

eval in interface DrillSimpleFunc