Bug 206285 Rename the report contain parameter will lead to the report cannot be preview[0705]
Description: Rename the report will lead to the report cannot be preview[0705] Step: 1. New a report contain a parameter named R1. 2. Preview it. 3. Rename the report as R2 4. Preview it again. Actual result: Step 2 is ok. But the step 4 will pop up an error and said that the report does not exist or contains errors. Expected result: The report can be preview when rename it.
UI/org.eclipse.birt.report.designer.ui.preview.web/src/org/eclipse/birt/report/designer/ui/preview/editors/ReportPreviewFormPage.java
}
					else
					{
						if ( DesignChoiceConstants.PARAM_TYPE_STRING
								.equalsIgnoreCase( parameter.getDataType( ) )
								&& ( (String) valueObj ).length( ) <= 0 )
						{
							missingParameter = true;
							break;
						}
					}
				}
			}
		}
		return missingParameter;
	}
	/**
	 * Parse config file name from report design filename.
	 * 
	 * @param reportDesignName
	 *            String
	 * @return String
	 */
	private String getConfigFileName( String reportDesignName )
	{
		if ( reportDesignName == null )
			return null;
		String[] result = reportDesignName.split( "\\." ); 
		String extensionName = result[result.length - 1];
		String configFileName = reportDesignName.substring( 0, reportDesignName