Hello Michael, In your example what do all the "jar" means? I assume that in the <taskdef> task, the my.properties files declares new task (using the my: namespace), while the my.jar contains the implementation.
As for the <PreSetDef> task, are you re-directing the core <jar> to use your <my:jar> task and by doing this way (via the PreSetDef) you are not having to pollute(or modify) the build.xml to use my:jar? Is this right? Ninju Bohra --- Michael Sunde <[EMAIL PROTECTED]> wrote: > 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: user@ant.apache.org > 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] > > __________________________________ Do you Yahoo!? Yahoo! Mail - Helps protect you from nasty viruses. http://promotions.yahoo.com/new_mail --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
