18 jan 2007 kl. 09.54 skrev David:
Hi all:
I study Lucene and I want build search on all the fields, I find
MultiFieldQueryParser can search on multiple fields, but we must
specify
fields. maybe we can add a field named all_field that contain all
the fields
when indexing, but it make the index file larger.
so how to make search on all fields without specify any fields ?
Appreciate your help!
You can use the IndexReader to see what fields is in an index.
<http://lucene.apache.org/java/docs/api/org/apache/lucene/index/
IndexReader.html#getFieldNames
(org.apache.lucene.index.IndexReader.FieldOption)>
<http://lucene.apache.org/java/docs/api/org/apache/lucene/index/
IndexReader.FieldOption.html>
HTH
--
karl
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