[jira] Commented: (VELOCITY-132) IllegalArgumentException while calling an overloaded method

["Llewellyn Falco (JIRA)" <ji...@apache.org>]

    [ http://issues.apache.org/jira/browse/VELOCITY-132?page=comments#action_12358041 ] 

Llewellyn Falco commented on VELOCITY-132:
------------------------------------------

the following test breaks.

package com.spun.util.velocity.tests;

import junit.framework.TestCase;
import org.apache.velocity.context.Context;
import com.spun.util.velocity.ContextAware;
import com.spun.util.velocity.VelocityParser;

public class VelocityNullArgumentTest extends TestCase implements ContextAware
{
  /***********************************************************************/
  public void testOverloadedMethodFound() throws Exception
  {
    assertEquals("you got null", VelocityParser.parseString("$object.getClass($nullValue)", this));
  }
  /***********************************************************************/
  public void setupContext(Context context)
  {
    context.put("object", this);
    context.put("nullValue", null);
  }
  /***********************************************************************/
  public static String getClass(Class c)
  {
    return c == null ? "you got null" : c.getName();
  }
  /***********************************************************************/
  public static String getClass(String c)
  {
    return c == null ? "you got null" : c.getClass().getName();
  }
  /***********************************************************************/
  /***********************************************************************/
}

> IllegalArgumentException while calling an overloaded method
> -----------------------------------------------------------
>
>          Key: VELOCITY-132
>          URL: http://issues.apache.org/jira/browse/VELOCITY-132
>      Project: Velocity
>         Type: Bug
>   Components: Source
>     Versions: 1.3-rc1
>  Environment: Operating System: All
> Platform: All
>     Reporter: MySign
>      Fix For: 1.5

>
> If there are two methods with the same name and different parameters like:
> public class myClass
> {
>     public String foo ( Integer intObj );
>     public String foo ( String str );
> }
> and a velocity template like this
> $myObj.foo( $someObj.getNull() )
> $myObj.foo( $str )
> while $someObj.getNull() returns null and $str is a java.lang.String object
> with a String like 'test'. Because velocity caches the first method with the 
> Integer argument on calling with the parameter null (which isn't of course of 
> any type/class) the call fails with the String argument, because velocity tries
> to call the foo( Integer intObj )!
> In the velocity log appears a IllegalArgumentException which is right, but 
> velocity should call the right method!
> mike

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