Bug 122365 In data set dialog, add parameter first then edit query, parameter value will be cleared out.
Description: In data set dialog, add parameter first then edit query, parameter value will be cleared out. Steps to reproduce: 1. Add a data set. 2. In data set dialog, add a parameter. 3. Edit query and use this parameter. 4. Preview in data set dialog, it works. 5. Change to "parameter" page, its value is cleared out.
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/internal/ui/dialogs/PropertyHandleTableViewer.java
{
                        PropertyHandle handle = (PropertyHandle) viewer.getInput();
                        handle.clearValue();
                        viewer.refresh();
                    }
                    catch (SemanticException e1)
                    {
                        
                        e1.printStackTrace();
                    }
                }
            });
            viewer.getTable().setMenu(menu);
        }
        
        if(enableKeyStrokes)
        {
            viewer.getTable().addKeyListener(new KeyListener(){
                public void keyPressed(KeyEvent e)
                {
                }
                public void keyReleased(KeyEvent e)
                {
                    if ( e.keyCode == SWT.DEL )
                    {
                        removeSelectedItem();
                    }
                }
                
            });