Added new FormValidationException to throw "no results returned" when database...

Added new FormValidationException to throw "no results returned" when database query results are empty.

iTrust/src/edu/ncsu/csc/itrust/dao/mysql/CauseOfDeathTrendsReportDAO.java

@@ -144,6 +144,8 @@ public class CauseOfDeathTrendsReportDAO {
 				causes.add(new CauseOfDeathTrendsReportBean(name, cause, deaths));
 				count++;
 			}
+			if (causes.isEmpty())
+				throw new FormValidationException("No results returned");
 			rs.close();
 			stmt.close();
 		} catch (SQLException e) {
@@ -220,6 +222,8 @@ public class CauseOfDeathTrendsReportDAO {
 				causes.add(new CauseOfDeathTrendsReportBean(name, cause, deaths));
 				count++;
 			}
+			if (causes.isEmpty())
+				throw new FormValidationException("No results returned");
 			rs.close();
 			stmt.close();
 		} catch (SQLException e) {