How index and search text files in Lucene 3.0.2 ?

The default field of query parser is wrong:
QueryParser parser = new QueryParser(Version.LUCENE_30, "computer",
analyzer);

You haven't indexed a field with name "computer". Your query string does not
override the field, so your query is in fact "computer:computer".

A note: It is not recommended to instantiate TopScoreDocCollector directly
for such search cases, just use the IndexSearcher method that returns
TopDocs!

-----
Uwe Schindler
H.-H.-Meier-Allee 63, D-28213 Bremen
http://www.thetaphi.de
eMail: [email protected]


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Thanks Uwe, its works with:

QueryParser parser = new QueryParser(Version.LUCENE_30,
"content:computer", analyzer);
Query query = parser.parse("content:computer");

But, if i need get results like google in a query like "What is the
role of PrnP in mad cow disease?"

Thanks
CElso.

2010/11/5 Uwe Schindler <[email protected]>:
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Hi Celso,

just a note, your code makes no sense:

In the constructor of QueryParser you have to give the default field, e.g.
"content" only - With parse() you have to give the query string (which can
contain a field name or not): "computer" or alternatively "content:computer"
(which returns equal results because the default field from the ctor is
content:

QueryParser parser = new QueryParser(Version.LUCENE_30, "content",
analyzer);
Query query = parser.parse("computer");

or:

Query query = parser.parse("content:computer");

Uwe

-----
Uwe Schindler
H.-H.-Meier-Allee 63, D-28213 Bremen
http://www.thetaphi.de
eMail: [email protected]

"computer:computer".


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thanks !

2010/11/5 Uwe Schindler <[email protected]>