src.site.apt.tips-and-tricks.apt Maven / Gradle / Ivy

Go to download
 ------
 Tips and Tricks
 ------
 Max Antoni
 ------
 04.03.2007
 ------

 ~~ Copyright (c) 2006-2007 Maximilian Antoni. All rights reserved.
 
 ~~ This software is licensed as described in the file LICENSE.txt, which you
 ~~ should have received as part of this distribution. The terms are also
 ~~ available at http://www.maxantoni.de/projects/eva-properties/license.txt.

 ~~ NOTE: For help with the syntax of this file, see:
 ~~ http://maven.apache.org/guides/mini/guide-apt-format.html

Accessing system properties

 There are two ways to access system properties:
 
   [[1]] <<>> delegates all keys that are not defined to system
   		properties
   
   [[2]] <<>> accesses the system property
   		"debug-mode"
   
 The second option can be combined with a switch:
 
+-------------------------------------------------+
key: (
	${system.debug-mode}
	false
)
+-------------------------------------------------+

 The system property "debug-mode" will be used if it is available. Otherwise the
 default value "false" will be used.
 
Project setup

 It is a good idea to have a central property file packaged with your JAR and
 reference your user-accessible property files from there. If the external file
 is not available, you can provide a default. For example:
 
+-------------------------------------------------+
super: system

log: (
	&"file://${app.home}/config/log.eva"
	&"classpath://log.eva"
)
+-------------------------------------------------+

 If the system property <<>> is provided and the external properties
 file <<>> exists, it will be loaded and
 the content made available under the key <<>>. Otherwise the file
 <<>> will be read from the classpath.