Hi, In our case we wanted to make an enhancement to one of the existing ant tasks. Here is what we did: - subclassed the existing implementation - Loaded new implementation using taskdef - use presetdef to redirect the standard implementation to our implementation.
No need to modify all the existing calls and I can remove my changes by deleting a few lines in the build.xml file: <taskdef resource="my.properties" classpath="my.jar" uri="http://my.com/"; loaderRef="my"/> <presetdef name="jar"> <my:jar/> </presetdef> Michael -----Original Message----- From: Ninju Bohra [mailto:[EMAIL PROTECTED] Sent: Friday, January 28, 2005 2:39 PM To: [email protected] Subject: Getting my own core task implementation ahead of ant.jar Hello all, I am using ANT 1.6.2 on WinXP and Lunix enviroments... I have some issues with the <sql> task (defined by the class org.apache.tools.ant.taskdefs.SQLExec) in ant.jar (i.e. does not handle PL/SQL, no interactive error handling, etc...) and have made suggestions to the ant-dev group as to how to resolve them. But while waiting for the ant-dev to resolve and agree on a solution, I wanted to modify my local ant environment to have contain my desired behavior. Our first solution was to get the ANT source and modify the default defintion of the <sql> task. After rebuilding the ant.jar everything worked but I felt uncomfortable that I had rebuilt and changed the ANT distribution source and so I unable to move up the next release (without having to re-do my code changes). Then I came up with the idea that maybe if I could put my modified <sql> task in a seperate jar and have that jar file (i.e. myTasks.jar), which has my <sql> task (same package and class name) implementation, be loaded before the core <sql> task then my <sql> would be used in place of the core ANT one. And if and when the ant-dev group gets around to implementing some of my suggestions in the core <sql> task, all I need to do is remove my class from my jar file and I will auto-magically pick up the core <sql> task class. Which comes to my core question, is this possible... and if so how/where do I list my jar infront of ant.jars on both the WinXP enviroment (ant.bat, ant.cmd, antRun.bat) and the Lunix/UNIX enviroments (ant and antrun)? I am also open to other ways to solve the problem of getting a custom implementation while still using the standard task name in my build.xml files? I did not want to create my own task name (i.e. <MYsql>) and use the <taskdef> to point to my custom implementation (with different package or class name) because then I would make a lot of changes if/when I moved back to the updated core task (i.e. <sql>). I know that is way to wordy, but thanks for your input in advance, Ninju Bohra --------------------------------- Do you Yahoo!? Meet the all-new My Yahoo! - Try it today! --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
