Calling me a liar, hummm ;-)
Then look at what's below! In Ant 1.4.1, a non-Task deriving class needs to
have a setProject(Project) method to work... Not deriving from Task is to
not have dependencies on Ant at all (a pure Bean), so requiring a method to
take an Ant class as argument pretty much defeats that purpose.
So granted, one can have a non-task deriving class in Ant 1.4.1, but only if
it has this setProject(org.apache.tools.ant.Project project) method.
Otherwise, it fails. Ant 1.5 OTOH doesn't need that method, and can use a
pure Bean with ZERO dependencies on Ant.
So I maintain that Ant 1.5 is the only version of Ant I know of that support
arbitrary classes as task using the bean pattern. I don't know if pre-1.4.1
worked better than 1.4.1... --DD
P:\org_apache\antx\echo-task>set ANT_HOME=C:\pro\ant
P:\org_apache\antx\echo-task>%ANT_HOME%\bin\ant
Buildfile: build.xml
compile:
[javac] Compiling 1 source file
taskdef:
test:
[myecho] Error setting project in class EchoTask
BUILD FAILED
P:\org_apache\antx\echo-task\build.xml:9: java.lang.NoSuchMethodException:
setProject
Total time: 1 second
P:\org_apache\antx\echo-task>set ANT_HOME=C:\pro\ant1.5
P:\org_apache\antx\echo-task>%ANT_HOME%\bin\ant
Buildfile: build.xml
compile:
taskdef:
test:
[myecho] Hurra
BUILD SUCCESSFUL
Total time: 1 second
P:\org_apache\antx\echo-task>type EchoTask.java
/**
* Simple task to demonstrate one doesn't need any dependency on ANT
* to be a custom ANT task.
*
* @author <a href="mailto:[EMAIL PROTECTED]";>Dominique Devienne</a>
* @version May 2002 - Copyright (c) 2002, Landmark Graphics Corp.
*/
public class EchoTask {
private String _message = "<none>";
public void setProject(Object project) {
System.out.println("setProject called with "+project);
}
public void setMessage(String message) {
_message = message;
}
public void execute() {
System.out.println(_message);
}
} // END class EchoTask
P:\org_apache\antx\echo-task>REM edit EchoTask.java to take an Ant Project
P:\org_apache\antx\echo-task>%ANT_HOME%\bin\ant
Buildfile: build.xml
compile:
[javac] Compiling 1 source file
taskdef:
test:
[myecho] setProject called with org.apache.tools.ant.Project@bd2664
[myecho] Hurra
BUILD SUCCESSFUL
Total time: 2 seconds
P:\org_apache\antx\echo-task>set ANT_HOME=C:\pro\ant
P:\org_apache\antx\echo-task>%ANT_HOME%\bin\ant
Buildfile: build.xml
compile:
taskdef:
test:
[myecho] setProject called with org.apache.tools.ant.Project@1ddcde
[myecho] Hurra
BUILD SUCCESSFUL
Total time: 0 seconds
P:\org_apache\antx\echo-task>type EchoTask.java
/**
* Simple task to demonstrate one doesn't need any dependency on ANT
* to be a custom ANT task.
*
* @author <a href="mailto:[EMAIL PROTECTED]";>Dominique Devienne</a>
* @version May 2002 - Copyright (c) 2002, Landmark Graphics Corp.
*/
public class EchoTask {
private String _message = "<none>";
public void setProject(org.apache.tools.ant.Project project) {
System.out.println("setProject called with "+project);
}
public void setMessage(String message) {
_message = message;
}
public void execute() {
System.out.println(_message);
}
} // END class EchoTask
P:\org_apache\antx\echo-task>
P:\org_apache\antx\echo-task>type build.xml
<?xml version="1.0"?>
<!-- ANT build file to test a specific feature or bug of ANT.
Dominique Devienne <[EMAIL PROTECTED]> Sep 2002
-->
<project name="echo-task" default="test">
<target name="test" depends="compile, taskdef">
<myecho message="Hurra" />
</target>
<target name="compile">
<javac srcdir="." includes="EchoTask.java" />
</target>
<target name="taskdef">
<taskdef name="myecho" classname="EchoTask" classpath="." />
</target>
</project>
P:\org_apache\antx\echo-task>
-----Original Message-----
From: Stefan Bodewig [mailto:[EMAIL PROTECTED]]
Sent: Thursday, September 26, 2002 1:04 AM
To: [EMAIL PROTECTED]
Subject: Re: [Q:] Writing a simple Ant task?
On Wed, 25 Sep 2002, Erik Hatcher <[EMAIL PROTECTED]>
wrote:
> Actually even in Ant 1.4.1 a task didn't need to extend from Task
> either,
Actually even in Ant 1.1 a task didn't need to extend from Task
either. 8-)
I think it almost never had to, let me see, TaskAdapter has been added
to Ant's CVS by Costin on 2000-01-27, so since then tasks didn't need
to extend Task anymore.
Stefan
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