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From Steven Githens <sgith...@caret.cam.ac.uk>
Subject Escaping XPATH Queries and more
Date Fri, 12 Oct 2007 15:58:41 GMT
Hello,

I started using more formats for my folder names today and realized they 
aren't XML Element correct and the XPATH query blew up.

I tried escaping:

//site/2f43f30b-f1cc-4b62-803b-dd37c2be1693/mail/messagefolder001/* 
order by @sakaijcr:message-date ascending

to:

//site/48c035bd_x002d_8873_x002d_4674_x002d_80e5_x002d_0c5618c3f754/mail/messagefolder001/*

order by @sakaijcr:message-date ascending

after reading seciton 6.4.3 in JSR170, but I still get:

Lexical error at line 1, column 26.  Encountered: "_" (95), after : "": 
Lexical error at line 1, column 26.  Encountered: "_" (95), after : ""
javax.jcr.query.InvalidQueryException: Lexical error at line 1, column 
26.  Encountered: "_" (95), after : "": Lexical error at line 1, column 
26.  Encountered: "_" (95), after : "": Lexical error at line 1, column 
26.  Encountered: "_" (95), after : ""
        at 
org.apache.jackrabbit.core.query.xpath.XPathQueryBuilder.<init>(XPathQueryBuilder.java:267)


Any ideas on how to correclty escape that?  I don't use a lot of XPATH 
outside this, so I'm hoping it's something obvious, but a bit of 
googling didn't turn up much for me.

Also, I'm wondering what the best way to proceed on to JCR 2 for 
portable queries is.  After going through JSR-283 it looks like XPATH is 
deprecated and there is a new version of the SQL querying.  While 
JSR-170 had a fair number of example queries, JSR-283 seems to not have 
any examples at all, so I'm not sure what the difference between the 
grammers really is.

Any ideas on ways the best way to write your queries so there will be 
minimal maintenence after JCR2 is ready in JackRabbit?

Thanks!
Steve

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