Validating vs non validating parsers with xml Aunties online sex chatting
The differences between validating and nonvalidating parsers are not quite as clear as you might think.
For example, the Apache Xerces parser is nonvalidating by default.In other words, validating parsers must read the entire DTD and check the document against the structural constraints it describes.You might conclude, therefore, that nonvalidating parsers do not need to consult the DTD, but that turns out to be incorrect.from import make_parser, handler import sys parser = make_parser() Feature(handler.feature_namespaces, True) Feature(handler.feature_validation, False) Content Handler(handler.From section 4.1, I infer that the difference between a validating and non-validating parser is that the former confirms that the syntax of individual URI components precisely matches the specified grammar, while the latter simply breaks the URI into its components. But in section 5.2, the algorithm for resolving a relative reference seems to suggest that different behaviours are required depending on whether "parse" is validating or nonvalidating.
An example at the end of 5.4.2 also refers to this, drawing a distinction between "validating parsers" and "backwards compatibility." " = " ; for validating parsers / " ; for backward compatibility Read literally, the spec could be interpreted to mean that a new implementation of a nonvalidating parser should actually produce "backwards-compatible" behaviour.