I'm sorry, this can be a little confusing. The tab identifier doesn't require an expression - but identifiers that are looked up as events are seen and routed based on the values of those replaced identifiers -
The 'create custom expression logpanel' does require a valid expression (something like LEVEL == INFO) I'll look into the dups issue.. -----Original Message----- From: Ceki G�lc� [mailto:[EMAIL PROTECTED] Sent: Friday, May 21, 2004 12:57 PM To: Log4J Developers List Subject: RE: More chainsaw comments Thanks for the detailed explanations Scott. Is this explanation available somewhere easily accessible by Joe user? Did I miss it? I tried using "create custom expression LogPanel" with PROP.hostname and also just LEVEL. Each time I got an error , for example, "Unable to add tab using expression LEVEL, invalid expression LEVEL". It also seems that on the events panel many of the columns are duplicated, two or even three times. That's all for the moment. At 09:06 PM 5/21/2004, you wrote: >The 'tab identifier' field in the application-wide preferences window >controls how events are routed to unique tabs. The syntax used in this >identifier is the same expression syntax used by color rule expressions >and the 'refine focus' field.. > >As events are received, the tab identifier expression is resolved based >on >that event's values. If there is an existing tab with matching values, >the event is routed to that tab. If there isn't an existing tab matching >the resolved values, a new tab is created. > >For example, with the default identifier "PROP.hostname - >PROP.application": > >All received events with a 'hostname' property with a value of >'LOCALHOST', and an 'application' property with a value of 'APPNAME' will >be routed to the tab identified by 'LOCALHOST - APPNAME' > >All received events with a 'hostname' property with a value of >'TESTMACHINE', and an 'application' property with a value of 'APPNAME' >will be routed to the tab 'TESTMACHINE - APPNAME' > >This is a very powerful feature - you can change the expression and new >events will be routed based on the newly defined expression - for example, >you can define an identifier of 'LEVEL' and have all DEBUG events routed >to a single tab, all ERROR events routed to a separate tab, etc. > >This allows you to combine events from separate sources into a single >tab >- if you had an identifier 'PROP.application', events from both the >TESTMACHINE and LOCALHOST would be collected into the single APPNAME tab. > > >The 'Create custom expression log panel' feature is related and even >more >powerful - it allows you to define a 'view' of existing and new events - >effectively bypassing the unique tab identifier routing mechanism and >allowing you to route events to a tab on an ad hoc basis - it will collect >events from existing tabs and populate the new tab, as well as route new >events to both this new log panel (if applicable) as well as to the tab >identifier-based panel. > >The LoggingEventFieldResolver javadoc describes the supported keywords >used by the tab identifier and the custom tab expression mechanism - see >the javadoc here: >http://cvs.apache.org/viewcvs.cgi/jakarta-log4j/src/java/org/apache/log4j/spi/LoggingEventFieldResolver.java?rev=1.7&view=auto > >Hope this helps, > >Scott > > > > >-----Original Message----- >From: Ceki G�lc� [mailto:[EMAIL PROTECTED] >Sent: Friday, May 21, 2004 11:33 AM >To: [EMAIL PROTECTED] >Subject: More chainsaw comments > > > >Hi again, > >The automatic direction of events to various panels is a very powerful >feature. Is this feature documented somewhere? > >The capability to focus on a logger is also very useful. Is it possible >to focus on multiple loggers at once? It looked as if that was not the >case. > >Thanks in advance, > >ps: Keep up the fantastic work. > > >-- >Ceki G�lc� > > 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] -- Ceki G�lc� 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]
