Click here to Skip to main content
15,880,725 members
Articles / Programming Languages / C++

Implement Phonetic ("Sounds-like") Name Searches with Double Metaphone Part I: Introduction & C++ Implementation

Rate me:
Please Sign up or sign in to vote.
4.91/5 (21 votes)
19 Mar 2007CPOL15 min read 147.6K   2.8K   60  
Introduces the Double Metaphone algorithm for phonetic comparison of proper names, and provides a practical C++ implementation for use in the reader's projects.
<%@ language="VBScript" %>
<%
Option Explicit

Dim searchWord
dim mphone
Dim primaryKey
Dim alternateKey

Dim strDbPath
Dim oFS

Dim oConn
Dim oRS

searchWord = Trim(Request.QueryString("searchWord"))
if Len(searchWord) = 0 then
	Response.Redirect("search.htm")
end if
    
set mphone = Server.CreateObject("MetaphoneCOM.DoubleMetaphoneShort")
mphone.ComputeMetaphoneKeysScr searchWord, primaryKey, alternateKey

strDbPath = Server.MapPath("/ASPWordDBLookup") & "\..\namelist.mdb"

'Make sure database is accessible
Set oFS = Server.CreateObject("Scripting.FileSystemObject")
if not oFS.FileExists(strDbPath) then
	response.write "Access database " & strDbPath & " does not exist."
	Response.End
end if

on error resume next
oFS.OpenTextFile strDbPath
if err.number <> 0 then
	response.write "Error opening database: " & err.description & "<br>Make sure IUSR_" & Request.ServerVariables("SERVER_NAME") & " has Full Control on " & strDbPath & " and its containing folder"
	Response.End
end if
on error goto 0

'Use the namelist.mdb Access database in the parent directory
Set oConn = Server.CreateObject("ADODB.Connection")
oConn.ConnectionString = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" & strDbPath
oConn.Open

Dim strSql

'Select from the Words table, which contains a list of names, and the
'unsigned short representation of their Double Metaphone keys
strSql = "select word from Words where"
strSql = strSql & "(key1 = " & primaryKey & ")"
strSql = strSql & " or (key2 = " & primaryKey & ")"
If alternateKey <> -1 Then
	strSql = strSql & " or (key1 = " & alternateKey & ")"
	strSql = strSql & " or (key2 = " & alternateKey & ")"
End If

set oRS = oConn.Execute(strSql)
%>
<html>
<head>
<title>ASP Word DB Lookup</title>
</head>
<body>
Names matching '<%= searchWord %>'
<ul>
	
<% 
while Not oRS.EOF
   %><li><%= oRS("word") %>
	<%
    oRS.MoveNext
wend

oConn.Close
%>
</ul>
</form>
<p>
<a href="search.htm">Back</a>
</body>
</html>

By viewing downloads associated with this article you agree to the Terms of Service and the article's licence.

If a file you wish to view isn't highlighted, and is a text file (not binary), please let us know and we'll add colourisation support for it.

License

This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)


Written By
Web Developer
United States United States
My name is Adam Nelson. I've been a professional programmer since 1996, working on everything from database development, early first-generation web applications, modern n-tier distributed apps, high-performance wireless security tools, to my last job as a Senior Consultant at BearingPoint posted in Baghdad, Iraq training Iraqi developers in the wonders of C# and ASP.NET. I am currently an Engineering Director at Dell.

I have a wide range of skills and interests, including cryptography, image processing, computational linguistics, military history, 3D graphics, database optimization, and mathematics, to name a few.

Comments and Discussions