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From Jeremy Hanna <>
Subject Alphanumeric model ids
Date Tue, 25 Apr 2006 22:53:24 GMT
I am trying to search by a number of fields including an alphanumeric  
model id.

This is just the model id that comes from manufacturers.  I've tried  
to use a StandardAnalyzer and a SnowballAnalyzer to index the data.   
Then I search with the associated analyzer using a  
MultiFieldQueryParser.  Going through the debug into the attached  
Lucene source, I see that all a MultiFieldQueryParser does is make a  
bunch of queries and link them together with a Boolean query with  
SHOULD values.  I see that it is getting the right field, "model",  
and has the right query in there, e.g. "XPHP", but it returns no  

When I index it, I do the following:
modelField = new Field("model", (product.getModelNumber() == null) ?  
"" : product.getModelNumber(), Field.Store.NO,  

So it shouldn't be messing with the model id retrieved from the  
database when it puts it in the index (UN_TOKENIZED).

The weird thing is that it finds those model ids that are only  
numeric (including punctuation, e.g. "40603-38").  But it cannot find  
the "XPHP" model id.  On the command line SQL interface, I can do a  
select * from product where model = 'XPHP'; and it comes back with  
the single result.

Anyone have any idea as to why the numeric ones would come up and the  
alphanumeric ones would not find the right values in the index?

Thanks much,

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