DO NOT REPLY [Bug 24677] New: - Static member values lost without given CLASSPATH environment

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http://nagoya.apache.org/bugzilla/show_bug.cgi?id=24677

Static member values lost without given CLASSPATH environment 

           Summary: Static member values lost without given CLASSPATH
                    environment
           Product: Ant
           Version: 1.5.4
          Platform: PC
        OS/Version: BeOS
            Status: NEW
          Severity: Normal
          Priority: Other
         Component: Core
        AssignedTo: [EMAIL PROTECTED]
        ReportedBy: [EMAIL PROTECTED]


We wrote two own tasks (Task1 and Task2), which references another class 
(CounterHelper) with a static int member ( counter ).

Task1's and Task2's execute methods create an instance of CounterHelper
and increment it's static member counter. After this the value of
counter is sent to stdout. 

###############################################################################

package staticant;

import org.apache.tools.ant.Task;

public class Task1 extends Task {

  public void execute(){

    CounterHelper ch = new CounterHelper();
    ch.incCounter();
    System.out.println("Task1: "+ ch.getCounter());
  }
}


package staticant;

import org.apache.tools.ant.Task;

public class Task2 extends Task {

  public void execute(){

    CounterHelper ch = new CounterHelper();
    ch.incCounter();
    System.out.println("Task2: "+ ch.getCounter());

  }
}


package staticant;

public class CounterHelper {

  protected static int counter = 0;

  public CounterHelper() {
  }

  public int getCounter() {
    return counter;
  }

  public void incCounter() {
   counter++;
  }


  public void setCounter(int counter) {
    this.counter = counter;
  }

}

###############################################################################

We also created a suitable build.xml file like that:

###############################################################################

<?xml version="1.0"?>
<!DOCTYPE project>
<project name="AntProject" default="main2" basedir=".">

<taskdef name="mytask1" classname="staticant.Task1" classpath="classes"/>
<taskdef name="mytask2" classname="staticant.Task2" classpath="classes"/>

    <target name="main2" depends="main">
        <mytask2/>
    </target>

     <target name="main">
        <mytask1/>
    </target>

</project>

###############################################################################

We expected that during execution of target "main" CounterHelper.counter
is set to value 1 and during execution of target "main2" CounterHelper.counter
is then set to value 2.

But we got following result:


###############################################################################

Buildfile: build.xml

main:
  [mytask1] Task1: 1

main2:
  [mytask2] Task2: 1

BUILD SUCCESSFUL
Total time: 4 seconds

###############################################################################

????????????


After some terrible nights of "try and error" :)
we found, that the result depends on setting (or unsetting) of the
CLASSPATH environment variable to our target task classes.

In the "Feadback and Troubleshooting" section we also read:

"Ant does not need the CLASSPATH variable defined to anything to work."

So we learned, that don't setting the CLASSPATH brings the result above and
setting the CLASSPATH like

export CLASSPATH=:classes //points to our target task classes

we got the following expected result:

Buildfile: build.xml

main:
  [mytask1] Task1: 1

main2:
  [mytask2] Task2: 2

BUILD SUCCESSFUL
Total time: 4 seconds


We tested this using ant version 1.5.1, 1.5.4 on Linux or using JBuilder on 
Windows got the same behaviour.


What's going wrong?

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