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Date: Mon, 1 Jun 2009 00:58:07 -0700 (PDT)
From: "Kevin Zhou (JIRA)" <jira@apache.org>
To: commits@harmony.apache.org
Subject: [jira] Created: (HARMONY-6221) [classlib][beans]
 java.beans.XMLEncoder.writeObject(obj) outputs different contents of the
 modified field of super class from RI
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[classlib][beans] java.beans.XMLEncoder.writeObject(obj) outputs different contents of the modified field of super class from RI
--------------------------------------------------------------------------------------------------------------------------------

                 Key: HARMONY-6221
                 URL: https://issues.apache.org/jira/browse/HARMONY-6221
             Project: Harmony
          Issue Type: Bug
          Components: Classlib
    Affects Versions: 5.0M9
            Reporter: Kevin Zhou
             Fix For: 5.0M10


Given a test case [1], ChildClass extends ParentClass which contains a class field. If we use java.beans.XMLEncoder to write a object of ChildClass after invoking super.setClazz() method to modify the value of class field, (for example, from Collection.class to ChildClass.class) the output will be different from RI's output. In fact, HARMONY creates an additional id for the class object. I think it is unnecessary.

HARMONY outputs:
<?xml version="1.0" encoding="UTF-8"?>
<java version="1.5.0" class="java.beans.XMLDecoder">
 <object id="XMLEncoderTest$ChildClass0" class="hy.issue2.XMLEncoderTest$ChildClass">
  <void property="clazz">
   <class>hy.issue2.XMLEncoderTest$ChildClass</class>
  </void>
 </object>
</java>

RI outputs:
<?xml version="1.0" encoding="UTF-8"?> 
<java version="1.6.0_13" class="java.beans.XMLDecoder"> 
 <object class="hy.issue2.XMLEncoderTest$ChildClass"> 
  <void property="clazz"> 
   <class>hy.issue2.XMLEncoderTest$ChildClass</class> 
  </void> 
 </object> 
</java> 

[1] Test Case:
public static class ParentClass {
    Class<?> clazz = Collection.class;
    public Class<?> getClazz() {
        return clazz;
    }
    public void setClazz(Class<?> clazz) {
        this.clazz = clazz;
    }
}

public static class ChildClass extends ParentClass {
}

public void test_XMLEncoder_writeObject() throws Exception {
    ChildClass child = new ChildClass();
    ByteArrayOutputStream bos = new ByteArrayOutputStream();
    XMLEncoder xmlEncoder = new XMLEncoder(bos);
    child.setClazz(ChildClass.class);
    xmlEncoder.writeObject(child);
    xmlEncoder.close();
    System.out.println(bos.toString());
}

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