Sax validating

29 Apr

Typically, the application will use this information for reporting its own errors (such as character content that does not match an application’s business rules).In the earlier tutorials we saw how to build a JDOM2 document using SAXBuilder. Now lets look at an example that shows how to specify an XSD externally. An XML document is considered ‘well-formed’ if it follows the normal rules of XML. In the example below we look at validating an XML document while using DOM, SAX and St AX. On the other hand, an XML is considered valid if it follows the rules specified in the DTD or XSD. Applications normally only need to implement those interfaces whose events they are interested in; they can implement the interfaces in a single object or in multiple objects.Handler implementations should inherit from the base classes provided in the module Basic interface for resolving entities.

Outside parties are free to define handlers for any kinds of events, and to create properties for setting and querying them.The example below shows how to use an internally defined XSD. The example after that shows how to define an XSD externally. SAX parsers are strongly encouraged (though not absolutely required) to supply a locator: if it does so, it must supply the locator to the application by invoking this method before invoking any of the other methods in the Document Handler interface.The locator allows the application to determine the end position of any document-related event, even if the parser is not reporting an error.