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From "Shapira, Yoav" <Yoav.Shap...@mpi.com>
Subject RE: ObjectRenders
Date Thu, 03 Jun 2004 12:56:14 GMT

Hi,
ObjectRenderers do not replace a Layout.  They are classes that know how to render objects
of a specific class.  For example:

class A {
  private int a;
  public int getA() { return a; }
   
  private int b;
  public int getB() { return b; }
}

public class ARenderer implements ObjectRenderer {
  public String doRender(Object o) {
    if(o == null) {
      return null;
    } else if {! (o instanceof A)) {
      return null;
    } else {
      A obj = (A) o;
      return "Sum = " + (obj.getA() + obj.getB());
    }
}

They are specified in a properties configuration file as follows:
log4j.renderer.A = ARenderer

Yoav Shapira
Millennium Research Informatics


>-----Original Message-----
>From: Søren Ehrhorn [mailto:soeren.ehrhorn@jyskebank.dk]
>Sent: Thursday, June 03, 2004 7:36 AM
>To: 'log4j-user@logging.apache.org'
>Subject: ObjectRenders
>
>Hi,
>
>Im trying to incorperate ObjectRenders in min J2EE framework, but i dont
>know howto. Do they replase Layout??
>
>
>Regards,
>Søren
>
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