Bug 155365 Can not set data type to "date time" when editing "Data Item"
Description: Can not set data type to "date time" when editing "Data Item" Steps to reproduce: 1. Insert a data item to the layout 2. Name it and set the expression to "a = new Date()" 3. Select the data type to date time 4. Press ok Actual result: An Birt Exception is thrown out. Expected result: No NPE thrown out
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/ui/dialogs/ColumnBindingDialog.java
bindingHandle.setAggregrateOn( null );
							}
						}
					}
					else if ( COLUMN_AGGREGATEON.equals( property ) )
					{
						if ( ( (Integer) value ).intValue( ) == 0 )
							bindingHandle.setAggregrateOn( null );
						else
							bindingHandle.setAggregrateOn( groups[( (Integer) value ).intValue( )] );
					}
				}
			}
			catch ( SemanticException e )
			{
				ExceptionHandler.handle( e );
			}
			refreshBindingTable( );
		}
	};
	public ColumnBindingDialog( )
	{
		super( DEFAULT_DLG_TITLE );
	}
	public ColumnBindingDialog( String title )
	{
		super( title );
	}
	public ColumnBindingDialog( boolean canSelect )
	{