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From Peter Reilly <peter.rei...@corvil.com>
Subject Re: ScriptDef revisited
Date Wed, 31 Dec 2003 11:24:04 GMT
You could try playing with beanshelldef
http://marc.theaimsgroup.com/?l=ant-dev&m=106577547220771&w=2

Peter

Jose Alberto Fernandez wrote:

>Hi,
>
>my current struggle with <script/> and beanshell, made me notice how
>inefficient
>or script task is (i.e., on every execution the script is recompiled,
>and executed).
>
>Although there is no other way for <script/> it would be nice is
><scriptdef/>
>could do something more efficient. Currently <scriptdef/> will recompile
>the
>src on every invocation of the defined script.
>
>It would be nice if we could somehow cache the already parsed source,
>and
>being able to reexecute it multiple times with different element and
>attribute
>instances on each execution. So, to treat it a little more like compiled
>code.
>
>The way I see it, such a script definition would specify an expression
>entrypoint
>that can be called over and over. Something like:
>
> <scripdef name="myscript" language="beanshell"
>execute="executeScript()">
>   <attribute name="att1"/>
>   void executeScript() {
>     print (attributes.get("att1"));
>   }
> </scriptdef>
>
>The execute attribute indicates the expression to be evaluated
>on each <myscript/> instance, and it also indicates that it is safe
>to keep the compiled source (i.e., bsf engine object around).
>
>Notice that it may not be thread-safe to do this since the engine
>is statefull. hummmm
>
>So, what do people think?
>
>Jose Alberto
>
>
>
>
>
>  
>
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