Validating XML with XSD

[thunderman74]

Hi All,

We have a need to validate an incoming XML file against an xml schema file. I can see in the SAX parser how to use a DTD, but we are using XSD and not DTD. Does anyone have any sample code
that utilizes the Schema classes to do this. There is no clear way on how to use that stuff. I wish there was a helper class to just plug in an XML and XSD

Thanks,

Matthew MacMillan
Fiserv Corporation

[tc]

Hello,

Here is what Bryan Hogan wrote sometime back:

VA contains only rudimentary support for validation of XML documents against a schema. The primary goal of the schema support in VAST was to enable support for Web services. The Web services support uses XML schemas to map incoming XML data into corresponding Smalltalk objects. Some validation occurs as part of this mapping, but full schema validation is not supported.

. . . I had a simple example but it does not work but shows the basic idea. The schema file is (address-schema.xsd):

Code: Select all

<?xml version="1.0"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema">
<xs:element name="fullName" type="xs:string"/>
</xs:schema>

. . . and the xml file is (addressdoc.xml):

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<?xml version="1.0"?>
<fullName xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"  xsi:noNamespaceSchemaLocation="address-schema.xsd">Scott</fullName>

. . . the st code is:

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| parser |
parser := AbtXmlDOMParser newValidatingParser.
parser parseURI: 'C:\temp\addressdoc.xml'


. . . however, the parser will throw an exception and a 'AbtXmlDOMParser newNonValidatingParser' will always parse it as being correct.

--tc

[thunderman74]

Thanks for the quick response. I was hoping for a different answer. I guess I could convert the XSD to DTD...but would lose some validation integrity.

Thanks again!!