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Re: [platform-ant-dev] Heads up: Eclipse Ant Support will be changing
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The library you specify in that extension point is not a plug-in runtime
library like the ones specified in <runtime>. It is simply an attribute to
that extension point. So, your plug-in's classloader will not have
lib/myjar.jar in its classpath.
For example:
<plugin>
<runtime>
<library name="myplugin.jar"/>
</runtime>
<extension point="org.eclipse.ant.core.antTasks">
<antTask name="myTask" class="com.examples.MyTask"
library="lib/myjar.jar"/>
</extension>
</plugin>
We'll create a classloader that has lib/myjar.jar in its classpath. If this
new classloader does not find a class in lib/myjar.jar it will ask your
plug-in's classloader for it. That's how MyTask can find plug-in classes.
Hope that helps,
Rodrigo
Aldo_Eisma@xxxxxxx
Sent by: To: platform-ant-dev@xxxxxxxxxxx
platform-ant-dev-admin@ cc:
eclipse.org Subject: Re: [platform-ant-dev] Heads up: Eclipse Ant Support will be
changing
04/04/2002 11:35 AM
Please respond to
platform-ant-dev
Why do I have to specify a library in the new XML element you are
proposing?
> <extension point="org.eclipse.ant.core.antTasks">
> <antTask name="myTask" class="com.examples.MyTask"
> library="lib/myjar.jar"/>
> </extension>
>
> The contributions to these extension points are used to automatically
> include
> these library JARs on the Ant classpath, and to fabricate appropriate Ant
> taskdefs. And any plug-in that contributes to these extension points is
> automatically included on the classpath as a collaborating class loader.
You claim that the classloader of a plug-in that contributes to this
extension point is automatically included on the classpath. Doesn't that
mean that class com.examples.MyTask will be found in the plug-in jar?
If not, how can MyTask in turn refer to plug-in classes that are not
in myjar.jar?
-Aldo
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