I use commons Configuration. One config file for each environment and use composite configuration to include a common one. System property to define which environment config to pick up. -----Original Message----- From: Zhang, Alex [mailto:[EMAIL PROTECTED] Sent: Thursday, November 02, 2006 5:10 PM To: Jakarta Commons Developers List Subject: RE: is there a context sensitive properties configuration class available?
Yes, I know I can archive that using system property. But here my goal is to have just one property file which I can commit into CVS, I can build my web app from CVS, deploy it, and only need to config the run time context, one variable, to pick up the correct properties. The purpose is to minimize the configuration changes from build to deploy. Does this make sense to anybody? Thank you, Alex X Zhang -----Original Message----- From: Oliver Heger [mailto:[EMAIL PROTECTED] Sent: Thursday, November 02, 2006 4:37 PM To: Jakarta Commons Developers List Subject: Re: is there a context sensitive properties configuration class available? Zhang, Alex wrote: > Hi all, > > > > I am looking for a properties configuration class that is context > sensitive, which means the value of a property depends on the context. > > > > For example, I have a website that uses different databases on dev, > stage and production environments, but all use the same user name and > password, so my properties file should look like this: > > > > DB_URL (DEV)=jdbc:mysql://10.0.0.1 > > DB_URL (STAGE)=jdbc:mysql://10.0.0.2 > > DB_ URL(PRO)=jdbc:mysql://10.0.0.3 > > > > DB_USER=joe_user > > DB_PASSWD=abc123 > > > > It may be named something differently. But can anyone tell me if there > is any class like this? > > There is no such thing as a context sensitive configuration, but maybe you can achieve the desired result using interpolation (i.e. variable substitution) and/or system properties. For instance you could define a system property for the database URL. Then you could load your configuration file using a ConfigurationFactory that also includes a SystemConfiguration (which gives you access to all defined system properties). While the user name and password are directly defined in the configuration file, the URL would be obtained from the system properties. Would this be an option? Please have a look at the user guide for more details. HTH Oliver --------------------------------------------------------------------- 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] --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
