I've contributed an ExpressionFilter here: http://cvs.apache.org/viewcvs.cgi/jakarta-log4j/src/java/org/apache/log4j/varia/ExpressionFilter.java?rev=1.1&view=auto - which may provide much of the capabilities the specialized filters provided..
All of the event fields are accessible via keywords and most of the operators you'd expect are supported - this same expression mechanism is how colorization and display filtering is now done in Chainsaw v2. See http://cvs.apache.org/viewcvs.cgi/jakarta-log4j/src/java/org/apache/log4j/chainsaw/rule/ to see what rules are supported. The RuleFactory class shows what symbols map to the individual rules. There's an ORO regexp operator (LIKE), a partial text operator (~=), an EXISTS operator, and the other operators you'd expect: !=, ==, >, >=, <, <=, ! You can also define precedence using parens and group expressions with && (and) and || (or). By the way, if you like to define expressions in postfix instead of infix, there's a param on the filter for supporting that. Opinions? Scott -----Original Message----- From: Ceki Gülcü [mailto:[EMAIL PROTECTED] Sent: Tuesday, December 09, 2003 8:16 AM To: Log4J Developers List Subject: RE: [ThrowableClassMatchFilter] RE: Sandbox problems Yoav, I see your point although my question was more directed at you. Do you use ThrowableClassMatchFilter ? Can you think of a case where it could be useful? At 10:59 AM 12/9/2003 -0500, you wrote: >Howdy, >This illustrates one of the fundamental issues of the sandbox (not just >in >log4j, it's more general), which is the circular argument of "no one knows >about it if it's in the sandbox -> no one uses it -> no one can say 'I use >this' -> it gets removed from the sandbox" ... > >Not that I particularly care for this one, I'm just in a musing mood... > >Yoav Shapira >Millennium ChemInformatics > > > >-----Original Message----- > >From: Ceki Gülcü [mailto:[EMAIL PROTECTED] > >Sent: Tuesday, December 09, 2003 10:46 AM > >To: Log4J Developers List > >Subject: Re: [ThrowableClassMatchFilter] RE: Sandbox problems > > > > > >Who finds this filter useful? > > > >If no one is interested we can safely throw it away. > > > >At 10:35 AM 12/9/2003 -0500, Shapira, Yoav wrote: > > > >>Hi, > >>Well, the ThrowableClassMatchFilter relied directly on the > >>getThrowable method of org.apache.log4j.spi.ThrowableInformation ;) > >>Given that this method is gone for good, we have two choices: > >>- Discard the ThrowableClassMatchFilter altogether > >>- Add a getThrowableClassName or getThrowableClass method to > >>ThrowableInformation and attempt to make the > >>ThrowableClassMatchFilter work with this method instead of > >>getThrowable. I think I can make it work this way. > >> > >>I added this filter a few months ago because it was such and easy > >>feature that I think has considerable real-world value. But given > >>that it's in the sandbox, we can safely assume only a few people > >>know about it and even fewer have used it, so we can discard it if > >>we want ;) > >> > >>Yoav Shapira > >>Millennium ChemInformatics > > > >-- > >Ceki Gülcü > > > > For log4j documentation consider "The complete log4j manual" > > ISBN: 2970036908 http://www.qos.ch/shop/products/clm_t.jsp > > > > > > > >--------------------------------------------------------------------- > >To unsubscribe, e-mail: [EMAIL PROTECTED] > >For additional commands, e-mail: [EMAIL PROTECTED] > > > > >This e-mail, including any attachments, is a confidential business >communication, and may contain information that is confidential, >proprietary and/or privileged. This e-mail is intended only for the >individual(s) to whom it is addressed, and may not be saved, copied, >printed, disclosed or used by anyone else. If you are not the(an) >intended recipient, please immediately delete this e-mail from your >computer system and notify the sender. Thank you. > > >--------------------------------------------------------------------- >To unsubscribe, e-mail: [EMAIL PROTECTED] >For additional commands, e-mail: [EMAIL PROTECTED] -- Ceki Gülcü For log4j documentation consider "The complete log4j manual" ISBN: 2970036908 http://www.qos.ch/shop/products/clm_t.jsp --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
