[birt-dev] CheckIn:Fix a bug introduced during the fixing of bugzilla bu

["Lin Zhu" <lzhu@xxxxxxxxxxx>]

-          Summary:

Fix a bug introduced during the fixing of bugzilla bug 136259.

- Bugzilla Bug (s) Resolved:
No.

- Description:
The bug will cause an exception in following scenario: Define two groups in the table, add two column bindings to each group, then use this column binding as group key.

 

The bug is fixed, and the unit test case is added.

- Tests Description:
Unit test.

- Files Edited:

"/org.eclipse.birt.data/src/org/eclipse/birt/data/engine/impl/ExprManagerUtil.java"

"/org.eclipse.birt.data/test/org/eclipse/birt/data/engine/binding/ColumnBindingTest.java"

 

- Files Deleted:

"/org.eclipse.birt.data/test/org/eclipse/birt/data/engine/binding/golden/ColumnBindingTest.testGroup.txt"  

 

- Notes to Build Team:
N/A

- Notes to Developers:
N/A

- Notes to QA:  

N/A

 

- Notes to Documentation:  
N/A