Bug 262132

Created attachment 159790 [details]
An example

These values are stored in form files in serialized encoded form, and the refactoring doesn't handle this situation. Example case when the type is an enumeration.

An example:
-----------
<Component class="hu.wfs.lib.gui.entitas.SzdbfTSZ" name="szdbfTSZ_Nyitoegyenleg">
  <Properties>
    <Property name="szerkesztendoTulajdonsagnev" type="java.lang.String" value="nyitoegyenleg"/>
    <Property name="tipus" type="hu.wfs.lib.gui.Szdbf$Tipus" editor="hu.wfs.lib.gui.SzdbfTipusEditor">
      <SerializedValue value="-84,-19,0,5,126,114,0,26,104,117,46,119,102,115,46,108,105,98,46,103,117,105,46,83,122,100,98,102,36,84,105,112,117,115,0,0,0,0,0,0,0,0,18,0,0,120,114,0,14,106,97,118,97,46,108,97,110,103,46,69,110,117,109,0,0,0,0,0,0,0,0,18,0,0,120,112,116,0,12,76,69,66,69,71,79,80,79,78,84,79,83"/>
    </Property>
  </Properties>
</Component> 

Watch this row:
---------------
<SerializedValue value="[encoded value]"/>

Workaround tip:
---------------
You have to decode, convert(type to type) and encode the new value manually. This methods can help you maybe:

URL:
http://grepcode.com/file_/bits.netbeans.org/maven2/org.netbeans.modules/org-netbeans-modules-form/RELEASE72/org/netbeans/modules/form/GandalfPersistenceManager.java/?v=source

/** Decodes a value from String containing textual representation of
 * serialized stream.
 * 
 * @param strValue value to decode.
 * @return decoded object
 * @exception IOException thrown if an error occurres during deserializing
 *            the object
 * @throws java.lang.ClassNotFoundException if the corresponding class cannot be loaded.
 */
public static Object decodeValue(String strValue)
    throws IOException, ClassNotFoundException
{
    if (strValue == null || strValue.length() == 0)
	return null;

    char[] bisChars = strValue.toCharArray();
    byte[] bytes = new byte[bisChars.length];
    StringBuffer singleNum = new StringBuffer();
    int count = 0;
    for (int i = 0; i < bisChars.length; i++) {
	if (',' == bisChars[i]) {
	    bytes[count++] = Byte.parseByte(singleNum.toString());
	    singleNum = new StringBuffer();
	} else {
	    singleNum.append(bisChars[i]);
	}
    }

    // add the last byte
    bytes[count++] = Byte.parseByte(singleNum.toString());
    ByteArrayInputStream bis = new ByteArrayInputStream(bytes, 0, count);
    return new ObjectInputStream(bis).readObject();
}    

/** Encodes specified value to a String containing textual representation of serialized stream.
 * 
 * @param value value to encode.
 * @return String containing textual representation of the serialized object
 * @throws java.io.IOException when some problem occurs during encoding.
 */
public static String encodeValue(Object value) throws IOException {
    ByteArrayOutputStream bos = new ByteArrayOutputStream();
    ObjectOutputStream oos = new ObjectOutputStream(bos);

    oos.writeObject(value);
    oos.close();

    byte[] bosBytes = bos.toByteArray();
    StringBuilder buf = new StringBuilder(bosBytes.length*4);
    for (int i=0; i < bosBytes.length; i++) {
	if (i+1 < bosBytes.length)
	    buf.append(bosBytes[i]).append(","); // NOI18N
	else
	    buf.append("").append(bosBytes[i]); // NOI18N
    }
    return buf.toString();
}

Actual Netbeans version:
------------------------
Product Version: NetBeans IDE 8.1 (Build 201510222201)
Java: 1.8.0_77; Java HotSpot(TM) 64-Bit Server VM 25.77-b03
Runtime: Java(TM) SE Runtime Environment 1.8.0_77-b03
System: Windows 7 version 6.1 running on amd64; Cp1250; hu_HU (nb)