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/adapter/ModelDteApiAdapter.java
return DataType.UNKNOWN_TYPE;
		if ( modelDataType.equals( DesignChoiceConstants.COLUMN_DATA_TYPE_ANY ) )
			return DataType.ANY_TYPE;
		if ( modelDataType
				.equals( DesignChoiceConstants.COLUMN_DATA_TYPE_INTEGER ) )
			return DataType.INTEGER_TYPE;
		if ( modelDataType
				.equals( DesignChoiceConstants.COLUMN_DATA_TYPE_STRING ) )
			return DataType.STRING_TYPE;
		if ( modelDataType
				.equals( DesignChoiceConstants.COLUMN_DATA_TYPE_DATETIME ) )
			return DataType.DATE_TYPE;
		if ( modelDataType
				.equals( DesignChoiceConstants.COLUMN_DATA_TYPE_DECIMAL ) )
			return DataType.DECIMAL_TYPE;
		if ( modelDataType
				.equals( DesignChoiceConstants.COLUMN_DATA_TYPE_FLOAT ) )
			return DataType.DOUBLE_TYPE;
		
		if ( modelDataType
				.equals( DesignChoiceConstants.COLUMN_DATA_TYPE_STRUCTURE )
				|| modelDataType
						.equals( DesignChoiceConstants.COLUMN_DATA_TYPE_TABLE ) )
		{
			assert false;
		}
		return DataType.UNKNOWN_TYPE;
	}
	
	public static int toDteFilterOperator( String modelOpr )