dom.GetElementsByTagName and dom.Writer

XSD Tutorials - Herong's Tutorial Examples

∟Xerces2 Java Parser - Java API of XML Parsers

∟dom.GetElementsByTagName and dom.Writer

This section provides tutorial examples on how to use sample programs dom.GetElementsByTagName and dom.Writer to validate XML documents with XSD schema.

You can also try the other 2 DOM technology sample programs. They all support XSD schema validation:

dom.GetElementsByTagName - Listing elements with their names and attributes using DOM technology.
dom.Writer - Writing back elements, attributes, and contents using DOM technology.

Here is my test result:

herong> java_xerces dom.GetElementsByTagName -v -s hello_xsd_invalid.xml

[Error] hello_xsd_invalid.xml:4:24: cvc-type.3.1.2: Element 'p' is a
^^^ simple type, so it must have no element information item
^^^ [children].

<p xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
^^^ xsi:noNamespaceSchemaLocation="hello.xsd">
<i>

herong> java_xerces dom.Writer -v -s hello_xsd_invalid.xml

[Error] hello_xsd_invalid.xml:4:24: cvc-type.3.1.2: Element 'p' is a
^^^ simple type, so it must have no element information item
^^^ [children].

<?xml version="1.0" encoding="UTF-8"?>
<p xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
^^^ xsi:noNamespaceSchemaLocation="hello.xsd">
Hello <i>world</i>!</p>

Both dom.GetElementsByTagName and dom.Writer report XSD schema validation errors correctly. But errors are reported before the print out of the XML document information. This is because they are using the DOM technology, which builds the entire XML document object first before applying any validations.