Bug 121111 Bad event handler class name does not cause an error
Open a report design, open any Data Set's Property editor. Type in an invalid Java class name for the "Event Handler Class" property, say "aaa". Preview a report that uses that Data Set. The report executes normally. No error is shown. Event handlers are an integral part of a report design, and if a script handler class is not found, or if the handler throws a runtime exception, Report Engine should either stop the report execution, or show the error message in the generated report. (Tested with the 2005-12-15 nightly build)
engine/org.eclipse.birt.report.engine/src/org/eclipse/birt/report/engine/api/impl/GetParameterDefinitionTask.java
queryDefn.getRowExpressions( ).add( valueExpObject );
						String labelExpString = ( ( ScalarParameterHandle ) param )
								.getLabelExpr( );
						if ( labelExpString != null
								&& labelExpString.length( ) > 0 )
						{
							Object labelExpObject = new ScriptExpression(
									labelExpString );
							labelMap.put( parameterGroup.getName( )
									+ "_"
									+ ( ( ScalarParameterHandle ) param )
											.getName( ), labelExpObject );
							queryDefn.getRowExpressions( ).add( labelExpObject );
						}
						GroupDefinition groupDef = new GroupDefinition( );
						groupDef.setKeyExpression( valueExpString );
						queryDefn.addGroup( groupDef );
					}
				}
				IPreparedQuery query = dataEngine.prepare( queryDefn );
				IQueryResults result = query.execute( executionContext
						.getSharedScope( ) );
				IResultIterator resultIter = result.getResultIterator( );
				dataCache.put( parameterGroup.getName( ), resultIter );
				return;
			} catch ( BirtException ex )
			{
				ex.printStackTrace( );
			}
		}