Re: getConfigurationFileName()
Hi Henrik, Try; DOMConfigurator.configureAndWatch(YourClass.class.getResource(xml/log4j.xml)); for log4j.xml Or PropertyConfigurator.configureAndWatch(YourPropertyFile); for log4j.properties Is there a way that I can get the filename and absolute path for the file used to configure log4j. Once I am up and running, I would like to be able to check that I am indeed using the right configuration file. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] -- Scott Morgan President Adligo Inc. Ph: 773-758-8735 Fax: 773-632-0568 http://www.adligo.com - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Questions on initial log4j instance
I have seen different usage of initial log4j instance like below private final static Logger logger = Logger.getLogger(some.name); and private final transient static Logger logger = Logger.getLogger(some.name); the second one has a additional keyword transient. Which way is recommended? Thanks in advance. Best Regards Xi Yuxiang Maveo Systems Limited - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
reconfigure an already configured log4j
Firstly, allow me to apologise if this question has already been answered - I don't have access to a searchable archive of the list. I am using log4j within the OpenEJB EJB server and I am able to set my configuration file (via the property -Dlog4j.configuration=file:conf/logging.conf) add appenders, loggers etc. This all works perfectly but I now dearly need to reconfigure the loggers at runtime and I have found that in previous projects a PropertyConfigurator.configureAndWatch will do the trick even if log4j is already configured (in classes beyond my control). * QUESTION 1: Is it OK to reconfigure log4j in this way ? This technique isn't working under OpenEJB because log4j can't find the config file a second time around when configured with the same URL 'file:conf/logging.conf' OR with a URL to the absolute file path 'file:///C|/openejb-0.8.3/conf/logging.conf'. Switching on -Dlog4j.debug gives me... log4j: [file:///C|/openejb-0.8.3/conf/logging.conf] does not exist. I vaguely understand that the EJB container may have a different class loader or context although I don't believe this to be the case with version 0.8.3 OpenEJB. * QUESTION 2: Why doesn't log4j like my config file URLs? They look logical to me :) - are they broken? Thanks for enduring my queries :), Michael. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: bad days and good days
Howdy, I spent most of the day, going over the documentation on log4j and various ways of logging under Tomcat. Great article on commons-logging vs. Log4j :) I saw a reference to how different web-applications can have different log4j configurations in think again, but I am not sure where that is supposed to be described. I have yet to see any explanation of how that is supported. Simple: 1. Put log4j.jar in each webapp's WEB-INF/lib directory, and no where else. 2. Put log4j.properties in each webapp's WEB-INF/classes directory, and no where else. That's it. You can also doing it programmatically by writing an init servlet or servlet context listener that configure log4j. Then you can put the log4j.properties file anywhere under your webapp's root directory, and use ServletContext#getResourceAsStream(...) to get the file and feed it to PropertyConfigurator. Yoav Shapira 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]
RE: getConfigurationFileName()
Howdy, If you used a classpath-discovery-based mechanism for configuring log4j, you can do this: http://javaalmanac.com/egs/java.lang/ClassOrigin.html?l=rel to figure out if it came from a jar and if so which jar. But that's a partial solution at best ;( Yoav Shapira Millennium ChemInformatics -Original Message- From: Henrik Vendelbo [mailto:[EMAIL PROTECTED] Sent: Saturday, September 27, 2003 9:31 PM To: [EMAIL PROTECTED] Subject: getConfigurationFileName() Is there a way that I can get the filename and absolute path for the file used to configure log4j. Once I am up and running, I would like to be able to check that I am indeed using the right configuration file. - 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]
Re: different files
Ceki Gülcü wrote: Alan, Have you tried putting log4j.jar in a directory accessible to the common loader? At 01:07 PM 9/26/2003 -0300, Alan Roberto Romaniuc wrote: Hi, Yep, I did it A, B, L are in the same webapp the problem is that I am not able to log thing from library in the same log of library caller class I have a library L which uses log4j. I have a application A, which uses L and log4j, I have a application B, which uses L and log4j too. A and B runs together (inside tomcat...), I am able to do differents logs, A.log(A),B.log (B) and L.log (L) , but I would like to log L in B.log, when B calls it, and L in A.log when A calls it. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: reconfigure an already configured log4j
* QUESTION 2: Why doesn't log4j like my config file URLs? They look logical to me :) - are they broken? I've solved this one -- all I needed to do is pass the filename rather than a URL (I can't remember why on earth I thought I had to pass a URL :) Michael. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: Questions on initial log4j instance
Agree -- private static final Logger is what I recommend. Modifiers are static then final, not vice versa. JLS section 8.3.1 defines the production FieldModifier: one of public protected private static final transient volatile and states, If two or more (distinct) field modifiers appear in a field declaration, it is customary, though not required, that they appear in the order consistent with that shown above in the production for FieldModifier. WRT to serialization, declaring a field both static and transient is redundant as static fields are not serialized by definition. Jim -Original Message- From: Shapira, Yoav [mailto:[EMAIL PROTECTED] Sent: Monday, September 29, 2003 7:55 AM To: Log4J Users List Subject: RE: Questions on initial log4j instance Howdy, Where did you see the transient one? The perfect syntax depends on your usage of the Logger. The most common one I think, as well as the one most frequently illustrated in the log4j documentation, is private final static (which should be private static final according to JLS recommendations ;)) Yoav Shapira Millennium ChemInformatics -Original Message- From: Yu Xiang Xi (Maveo) [mailto:[EMAIL PROTECTED] Sent: Monday, September 29, 2003 4:58 AM To: 'Log4J Users List' Subject: Questions on initial log4j instance I have seen different usage of initial log4j instance like below private final static Logger logger = Logger.getLogger(some.name); and private final transient static Logger logger = Logger.getLogger(some.name); the second one has a additional keyword transient. Which way is recommended? Thanks in advance. Best Regards Xi Yuxiang Maveo Systems Limited - 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] Confidentiality Warning: This e-mail contains information intended only for the use of the individual or entity named above. If the reader of this e-mail is not the intended recipient or the employee or agent responsible for delivering it to the intended recipient, any dissemination, publication or copying of this e-mail is strictly prohibited. The sender does not accept any responsibility for any loss, disruption or damage to your data or computer system that may occur while using data contained in, or transmitted with, this e-mail. If you have received this e-mail in error, please immediately notify us by return e-mail. Thank you. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Questions on initial log4j instance
At 04:58 PM 9/29/2003 +0800, Yu Xiang Xi (Maveo) wrote: I have seen different usage of initial log4j instance like below private final static Logger logger = Logger.getLogger(some.name); looks good. and private final transient static Logger logger = Logger.getLogger(some.name); the second one has a additional keyword transient. Loggers cannot be serialized so marking them transient can be useful for non static loggers. However, since static variables are not serialized, there is no need to mark them as transient. Moreover, in addition to serialization aspects, the keyword 'transient' has other meanings. It forces the JVM to re-reread the value of the variable from memory for each access, adding unnecessary overhead. Which way is recommended? The recommended form is: private static final Logger logger = ... Thanks in advance. Best Regards Xi Yuxiang Maveo Systems Limited -- Ceki Gülcü For log4j documentation consider The complete log4j manual ISBN: 2970036908 http://www.qos.ch/shop/products/clm_t.jsp import org.apache.Facetime; ApacheCon US 2003, 18-21 November http://apachecon.com/ - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: Questions on initial log4j instance
Howdy, I hate to be such a nitpick on this, and it's a matter of style only not substance, but in case you care, things that are static final should be capitalized, so if you have a private static final Logger it should be private static final Logger LOGGER = Logger.getLogger(some.name); If you leave it as logger (lower case), obviously it still works fine but tools like Checkstyle complain. Yoav Shapira Millennium ChemInformatics -Original Message- From: Ceki Gülcü [mailto:[EMAIL PROTECTED] Sent: Monday, September 29, 2003 11:41 AM To: Log4J Users List Subject: Re: Questions on initial log4j instance At 04:58 PM 9/29/2003 +0800, Yu Xiang Xi (Maveo) wrote: I have seen different usage of initial log4j instance like below private final static Logger logger = Logger.getLogger(some.name); looks good. and private final transient static Logger logger = Logger.getLogger(some.name); the second one has a additional keyword transient. Loggers cannot be serialized so marking them transient can be useful for non static loggers. However, since static variables are not serialized, there is no need to mark them as transient. Moreover, in addition to serialization aspects, the keyword 'transient' has other meanings. It forces the JVM to re-reread the value of the variable from memory for each access, adding unnecessary overhead. Which way is recommended? The recommended form is: private static final Logger logger = ... Thanks in advance. Best Regards Xi Yuxiang Maveo Systems Limited -- Ceki Gülcü For log4j documentation consider The complete log4j manual ISBN: 2970036908 http://www.qos.ch/shop/products/clm_t.jsp import org.apache.Facetime; ApacheCon US 2003, 18-21 November http://apachecon.com/ - 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]
Re: Questions on initial log4j instance
Do you mean 'volatile' here? I can't find in the JLS where transient has this affect. It wouldn't be the first time I've looked for something in the JLS and not found it, though. -Kevin --- Ceki Gülcü [EMAIL PROTECTED] wrote: Moreover, in addition to serialization aspects, the keyword 'transient' has other meanings. It forces the JVM to re-reread the value of the variable from memory for each access, adding unnecessary overhead. __ Do you Yahoo!? Yahoo! SiteBuilder - Free, easy-to-use web site design software http://sitebuilder.yahoo.com - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Questions on initial log4j instance
Yes, of course 'volatile' not 'transient'. I somehow merged volatile and transient in my mind. At 09:50 AM 9/29/2003 -0700, Kevin Klinemeier wrote: Do you mean 'volatile' here? I can't find in the JLS where transient has this affect. It wouldn't be the first time I've looked for something in the JLS and not found it, though. -Kevin --- Ceki Gülcü [EMAIL PROTECTED] wrote: Moreover, in addition to serialization aspects, the keyword 'transient' has other meanings. It forces the JVM to re-reread the value of the variable from memory for each access, adding unnecessary overhead. -- Ceki Gülcü For log4j documentation consider The complete log4j manual ISBN: 2970036908 http://www.qos.ch/shop/products/clm_t.jsp import org.apache.Facetime; ApacheCon US 2003, 18-21 November http://apachecon.com/ - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
