Erik Hatcher wrote:
So this would allow creating a filter, mapper, or other type
dynamically?
Yes (well mapper's when the mapper type patch is applied).
Nice! Just a sanity check - there is no way to do this with scripting
stuff in 1.6.1 is there?
I was about to say that one could not but this is not
true:
<script language="beanshell">
import org.apache.tools.ant.Task;
import org.apache.tools.ant.BuildException;
import java.io.File;
public class DeleteOnExit extends Task {
private File file;
public void setFile(File file) {
this.file = file;
}
public void execute() {
if (file == null) {
throw new BuildException("Missing attribute file");
}
file.deleteOnExit();
}
}
project.addDataTypeDefinition("deleteonexit", DeleteOnExit.class);
</script>
<deleteonexit file="tobedeleted"/>
works fine!
<scripttypedef> does however handle namespace, antlib and <antcall> use.
package org.apache.tools.ant.taskdefs.optional;
/**
* Class to define an ant definition using a script that
* can return a class that is a normal ant task/datatype.
* If the language is beanshell it must be 2.0 or higher.
* The other scripting currently known to work is
* groovy (1.0beta3).
* <p>
* Note that if there is anything incorrect with the script
* the warning message is quite cryptic.
* </p>
* This class is based in part on o.a.t.ant.util.ScriptRunner.
* The main difference is that it does not define
* beans. This is for three reasons:
* <ol>
* <li>The definition may be used in another project.</li>
* <li>It should be possible to convert to java later.</li>
And the third reason is? :)
removed..... (I had problems with groovy and assumed it was due
to the references being defined).
Peter
Also the orignal posted code had a error:
ClassLoader cl = createLoader();
Thread.currentThread().setContextClassLoader(cl);
manager.setClassLoader(cl);
should be:
ClassLoader classloader = createLoader();
Thread.currentThread().setContextClassLoader(classloader);
manager.setClassLoader(classloader);
Peter
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