What does a non validating xml parser do speed dating nyc 216

But in this example I used a Java String, which is UTF-16 encoded, without a prologue. The answer is that the parser did not read the string directly.

Instead it read from an doesn't match the actual content.

A third option is Relax NG, which tries to find a middle ground between DTD's lack of expressiveness and XSD's Byzantine structure. Before continuing, I want to add a third, non-standard term to describe XML documents: “correct.” A validator can only check the existence, ordering, and general content of an XML file; it's equivalent to the syntax check of a Java compiler.

Whether that content is actually usable by your application is another question — just like a syntactically correct program may be full of logic bugs.

Normally, this isn't an issue, especially if the XML is both produced and processed within the same organization.

A problem occurs when the program has to process documents from multiple sources, which may apply different meaning to elements with the same name: an element from one vendor will be very different from the like-named element from another.

It is possible to override this using the configuration setting , or their API equivalents.

Saxon will then use its own schema processor to validate the document as it emerges from the XML parser.

In my experience, a DOM document is the most usable form for parsed XML, because it can be accessed multiple times once parsed.

By comparison, with a SAX parser you have to know exactly what you're looking for at the time you parse.

The JDK's XML API predated namespaces, and due to backwards compatibility you must explicitly tell it that you want namespace-aware parsing: , not the parser.

I recommend always parsing with namespaces enabled, with one exception: in legacy code that uses XPath or XSLT.

As I describe elsewhere, XPath has its own hoops with regard to namespaces.

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