Bug 1069288

Description of problem:
Model looks like this: 

package org.pkg1;
public class Fact {
  private SubFact someField;
  ...
}

package org.pkg1;
public class SubFact {
  private Integer subfield;
  ...
}

package org.pkg2;
public class Fact {
  private String otherField;
  ...
}

In a guided rule in package org.pkg1, I set a condition with Fact from org.pkg1 and add some restriction on someField.subfield. It might look e.g. like this:
 Fact( someField.subfield > 15 )


Such a rule passes validation and can be saved, but it cannot be reopened. I get Error pop-up with quite unhelpful message "Unable to complete your request. The following exception occurred: null." Server log shows nothing.

This happens always when there are 2 classes with the same name, in different packages. The only exception is this set-up: org.Fact, org.pkg1.Fact (with SubFact attribute), org.pkg1.SubFact and the rule in org.pkg1 package.



Version-Release number of selected component (if applicable):
BPMS 6.0.1 ER1


Steps to Reproduce:
1. Create packages org, org.pkg1, org.pkg2.
2. Create POJOs (e.g. via DM)
 - Fact with String attr. in org.pkg2
 - Fact with SubFact attr. in org.pkg1
 - SubFact with Integer attr. in org.pkg1
3. Create a guided rule in org.pkg1 package.
4. Add a Condition element to the rule - Fact, add restriction on someField.subfield via the expression editor. It will look like this in the Source panel:
   Fact( someField.subfield > 15 )
5. Save the rule, (validate, check the source) close it and reopen it.


Actual results:
Error pop-up, "Unable to complete your request. The following exception occurred: null." Rule is not loaded.


Expected results:
Rule reopens.