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From Aruna Raghavan <Aru...@opin.com>
Subject RE: another simple question on query syntax
Date Thu, 27 Dec 2001 20:27:39 GMT

Hello again,
Prefix query in general means some thing like the following where the
operator is followed by the operands.
AND (a,b)
OR (a, AND (b,c))

If I apply this to the following definition, it still is not clear what it
will find-
AND (a,b) (Query)???

Just thought I would give more detail on what I am having trouble with.
Thx again!
-----Original Message-----
From: Aruna Raghavan [mailto:ArunaR@opin.com]
Sent: Thursday, December 27, 2001 2:10 PM
To: 'lucene-user@jakarta.apache.org'
Subject: another simple question on query syntax


		Hello,
		Does any one know what is  PrefixQuery '(' Query ')'? in the
definition of query syntax
Syntax:
Query  ::=  Clause  ( [ Conjunction ] Clause ) *

Where:
		Clause ::=  [ Modifier ] [ FieldName ':' ] BasicClause 
			Modifier    ::= '-' | '+' | '!' | 'NOT'
			BasicClause ::= ( Term | Phrase | | PrefixQuery '('
Query ')'
			PrefixQuery ::= Term '*'
			Term        ::= <a-word-or-token-to-match>
			Phrase      ::= '"' Term * '"'

		Conjunction ::= 'AND' | 'OR' | '||'

		-----------------------------


		It seems to imply the following
		(dog*)((cat) AND (bird))
		but I am not sure what this finds.
		Thanks once again for all the help!


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