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From Chris Hostetter <hossman_luc...@fucit.org>
Subject Re: QueryParser exception on escaped backslash preceding ) character
Date Fri, 12 Aug 2005 19:24:02 GMT

the mailing list isn't fond of attachemnts ... can you inline it in your
email?

: Date: Fri, 12 Aug 2005 12:09:55 -0700 (PDT)
: From: Matt Magoffin <apache.org@msqr.us>
: Reply-To: java-user@lucene.apache.org
: To: java-user@lucene.apache.org
: Subject: Re: QueryParser exception on escaped backslash preceding )
:        character
:
: Sure, here's a test case with the bug and the workaround.
:
: -- m@
:
: > can you provide a JUnit test that genertes the exception ... if it's
: > coming from the parse call it should only require a 1 line test.
: >
: > : Date: Fri, 12 Aug 2005 10:29:41 -0700 (PDT)
: > : From: Matt Magoffin <apache.org@msqr.us>
: > : Reply-To: java-user@lucene.apache.org
: > : To: java-user@lucene.apache.org
: > : Subject: Re: QueryParser exception on escaped backslash preceding )
: > :     character
: > :
: > : The strings are not coming from Java literals, actually, so I didn't
: > think
: > : that was the problem.
: > :
: > : Any other thoughts?
: > :
: > : -- m@
: > :
: > : > I think you are encountering a "double escape" problem in java
: > literals.
: > : > QP is seeing a backslash in front of the ) and waiting for you to
: > finish
: > : > the paren grouping.
: > : >
: > : > how are you passing that string to the QP, is it embedded in your java
: > : > code?  if so the java compiler is interpreting your \\ and your java
: > app
: > : > is never seeing it.
: > : >
: > : > : Date: Fri, 12 Aug 2005 07:30:19 -0700 (PDT)
: > : > : From: Matt Magoffin <apache.org@msqr.us>
: > : > : Reply-To: java-user@lucene.apache.org
: > : > : To: java-user@lucene.apache.org
: > : > : Subject: QueryParser exception on escaped backslash preceding )
: > : > character
: > : > :
: > : > : When I try to parse a query with an escaped backslash character like
: > : > this
: > : > : (using Lucene 1.4.3):
: > : > :
: > : > : -id:20677 +(addr:Street143 AND zip:\\)
: > : > :
: > : > : the QueryParser thows an Exception:
: > : > :
: > : > : Encountered "<EOF>" at line 1, column 289.
: > : > : 			Was expecting one of: <AND> ... <OR> ...
: > : > : 			<NOT> ... "+" ... "-" ... "(" ... ")" ... "^" ...
: > : > : 			<QUOTED> ... <TERM> ...
: > : > : 			<PREFIXTERM> ... <WILDTERM> ... "[" ...
: > : > : 			"{" ... <NUMBER> ...
: > : > :
: > : > : However, if I insert a space between the backslash and the
: > parenthesis:
: > : > :
: > : > : -id:20677 +(addr:Street143 AND zip:\\ )
: > : > :
: > : > : it works. Is this expected behavior or perhaps a bug in the
: > QueryParser?
: > : > :
: > : > : -- m@
: > : > :
: > : > :
: > ---------------------------------------------------------------------
: > : > : To unsubscribe, e-mail: java-user-unsubscribe@lucene.apache.org
: > : > : For additional commands, e-mail: java-user-help@lucene.apache.org
: > : > :
: > : >
: > : >
: > : >
: > : > -Hoss
: > : >
: > : >
: > : > ---------------------------------------------------------------------
: > : > To unsubscribe, e-mail: java-user-unsubscribe@lucene.apache.org
: > : > For additional commands, e-mail: java-user-help@lucene.apache.org
: > : >
: > : >
: > :
: > :
: > : ---------------------------------------------------------------------
: > : To unsubscribe, e-mail: java-user-unsubscribe@lucene.apache.org
: > : For additional commands, e-mail: java-user-help@lucene.apache.org
: > :
: >
: >
: >
: > -Hoss
: >
: >
: > ---------------------------------------------------------------------
: > To unsubscribe, e-mail: java-user-unsubscribe@lucene.apache.org
: > For additional commands, e-mail: java-user-help@lucene.apache.org
: >
: >
:
:



-Hoss


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