Re: [JEXL] Access to static methods?

[sebb]

I see, thanks, very useful.

Presumably Jexl has to be given class objects for any static methods
it needs to call?
Or are there any objects which are built-in to Jexl?

If not, it looks like one could perhaps extend FlatResolver to handle
something like:

systemClass=java.lang.System.class;

and then use it as follows:

systemClass.currentTimeMillis();

Or is this destined to fail?


Or am I way off
On 12/05/2008, Dion Gillard [EMAIL PROTECTED] wrote:
 Yes.

  See
  
 http://svn.apache.org/repos/asf/commons/proper/jexl/trunk/src/test/org/apache/commons/jexl/JexlTest.java
  Look for

  testStaticMethodInvocation and testStaticMethodInvocationOnClasses



  On Fri, May 9, 2008 at 1:26 AM, sebb [EMAIL PROTECTED] wrote:

   JEXL can access instance methods via the objects that are passed to
   the interpreter.
  
   Is it possible to access static methods in Jexl?
  

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  --
  dIon Gillard
  Any sufficiently advanced technology is indistinguishable from magic -
  Arthur C. Clarke 1917 - 2008


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Re: [JEXL] Access to static methods?

[Trevor Harrison]

On Mon, May 12, 2008 at 7:35 AM, sebb [EMAIL PROTECTED] wrote:
 I see, thanks, very useful.

  Presumably Jexl has to be given class objects for any static methods
  it needs to call?
  Or are there any objects which are built-in to Jexl?

Doesn't matter, you can get access to any objects you need on the fly
with something like:

i = 0;
intClazz = i.class;
clazz = intClazz.forName(java.io.File);
m = clazz.getMethod(listRoots, null);
roots = m.invoke(null, null);
files = roots[0].listFiles();
foreach( file in files )
{
  // do something with the file
}

Just replace the java.io.File string with the class you are interested
in, and use the reflection api.

-Trevor

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Re: [JEXL] Access to static methods?

[sebb]

On 12/05/2008, Trevor Harrison [EMAIL PROTECTED] wrote:
 On Mon, May 12, 2008 at 7:35 AM, sebb [EMAIL PROTECTED] wrote:
   I see, thanks, very useful.
  
Presumably Jexl has to be given class objects for any static methods
it needs to call?
Or are there any objects which are built-in to Jexl?


 Doesn't matter, you can get access to any objects you need on the fly
  with something like:

  i = 0;
  intClazz = i.class;
  clazz = intClazz.forName(java.io.File);
  m = clazz.getMethod(listRoots, null);
  roots = m.invoke(null, null);
  files = roots[0].listFiles();
  foreach( file in files )
  {
   // do something with the file
  }

  Just replace the java.io.File string with the class you are interested
  in, and use the reflection api.


Thanks, that's clever ...


  -Trevor


;-)

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