Validating java xml parser
Your Content Handler will be notified of default values for optional attributes. If it uses some custom mechanism, you may have to do a "prepass" reading (some of) the source file to discover the schema, then reading it again with the Validator Handler in place.There are lots of tutorials online on doing this, but I was not able to find a way that satisfies all my constraints, which are as follows: -I don't know the scheme beforehand, I have a bunch of XML and XSD files and every XML contains information about the XSD it should conform to -The validatior should alter the stream the handler gets and insert the default values for optional attributes from the XSD if necessary -The current custom handler should be used I'm fairly new to this topic, so I can't preclude that I've stumbled over the solution without beeing aware of it, but I'm currently completely confused on how to do this. Here is a minimum SSCCE, which should show the problem and related parts: package parser Test; import September 15, 1999 David Brownell Contents • Part 1: Conformance Testing for XML Processors • Part 2: Background on Conformance Testing • Part 3: Non-Validating XML Processors • Part 4: Validating XML Processors • Part 5: Summary Not many validating XML processors are available at this time, and most of them are available with a non-validating sibling.The suppliers are all commercial; there are no Open Source validating processors supporting the SAX API, so far as I am currently aware.The processor rejects a substantial number of documents that it should accept, producing fatal errors: In addition, this processor has entered infinite loops when asked to parse some documents. As for documents which should have been rejected but were in fact accepted, there were many of those also: Support for multiple text encodings seems weak; documents declared as being encoded in "UTF-16" were inappropriately rejected.This has been observed with UTF-16 input text (which sometimes produces less drastic errors) as well as with some numeric character references. Japanese encodings were neither rejected nor handled consistently.
cvc-element : element information item '/: Ship Notice/: Header/: To' is not valid with respect to it's complex type definition.. Significantly, none of the validity errors were continuable; some were correctly reported as non-fatal through SAX, but then the processor refused to continue processing.(As noted above, some were incorrectly reported as fatal errors in the first place.) This processor reported no conformance errors. I analysed the negative results when I worked at Sun, and believe that every diagnostic reports the correct error.(I confess this discovery was quite a surprise to me; it may be that this version of the IBM processor is a regression from earlier releases in this respect.) No validity errors were reported as such; all the invalid documents caused incorrect reports of fatal errors.Note that although this parser was originally called MSXML, Microsoft currently uses that term exclusively for its IE5 COM parser ("MSXML. The more recent name for the Java parser is the "Microsoft XML Parser in Java".