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From: Laura Hollink <laurah@cs.vu.nl>
To: java-user@lucene.apache.org
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Subject: Exact match on entire field
Date: Wed, 6 May 2009 10:50:00 +0200

Hi,

I am trying to distinguish between a document that matches the query  
because the query *appears* in one of the fields, and a document that  
matches the query because the query equals the complete field. I do  
want to use an Analyzer for case- and punctuation normalization. For  
example:

The query "bloemendaal" matches the complete field "Bloemendaal" in a  
document in my result list.
The query "adele" only partly matches the field "Adele Bloemendaal" in  
another document.

What is the best way to do this?

I currently solve it by first searching in a normal way, and than  
using the QueryParser on both the query and the relevant field in the  
documents in my result list. Finally, I simply compare the parsed  
query and the parsed field.

	QueryParser parser = new QueryParser(field,new StandardAnalyzer());
	Query query = parser.parse(q);
	Hits hits = is.search(query);
	...	
	Document doc = hits.doc(i);
	Query myfield = parser.parse(doc.get("skos:prefLabel"));
	if(myfield.equals(query)) System.out.println("Query exactly matches  
the entire field.");
	else System.out.println("The field contains the query.");

Is there a better way?

Thanks,
Laura

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