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From: Leonard Gestrin <Leonard.Gestrin@markettools.com>
To: "java-user@lucene.apache.org" <java-user@lucene.apache.org>
Date: Sun, 2 Aug 2009 19:49:27 -0700
Subject: question about indexing/searching using standardanalyzer for
 KEYWORD field that contains alphanumeric data
Thread-Topic: question about indexing/searching using standardanalyzer for
 KEYWORD field that contains alphanumeric data
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Hello,
I have question about KEYWORD type and searching/updating.  I am getting st=
range behavior that I can't quite comprehend.
My index is created using standard analyzer, which used for writing and sea=
rching. It has three fields

userpin - alphanumeric field which is stored as TEXT
documentkey  - alphanumeric field which is stored as TEXT
contents - text of document which is stored as TEXT

When I try to update document I am creating Term to find document by docume=
ntKey and I am using

 org.apache.lucene.index.IndexWriter.updateDocument(term, pDocument);

to do the update.  Lucene fails to find the document by the term and I am g=
etting duplicate documents in the index.
When I changed index to define documentKey as KEYWORD the updates started t=
o work fine.
However, search for documentKey using StandardAnalyzer stopped working.

It appears that lucene is using keywordAnalyzer for searching for the term =
during update, even though the indexer is open with StandardAnalyzer.

The sample values that are stored in documentKeys are: "L2222FAHBHMF", "L22=
22FAHBHAS".
I noticed if documentKey is numeric value, both KeywordAnalyzer and Standar=
dAnalyzer can find the documents by it without any problem thus reader can =
find and indexer can update without any problems. With alphanumeric I cant =
get both to work.
Any help is appreciated.
Thanks
Leonard


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