XML Validation

June · February 12th, 2004, 04:39 AM

All,

I am new to XML, and trying to validate some xml via delphi.
The xml validates not problem via XMLSPY

but throws an error when I try, I have looked at numerous examples but an stuck. Can anyone help.

  XSDL := CreateOLEObject('MSXML2.XMLSchemaCache.4.0');
  XSDL.add(NSEdit.Text,'aaa.xsd');
  XSDL.add(NSEdit.Text,'bbb.xsd');
  XSDL.add(NSEdit.Text,'ccc.xsd');

NSEdit.text is a target namespace

The simple types declared in ccc.xsd
xsd:simpleType name="IdType">
        <xsd:restriction base="xsd:string">
            <xsd:maxLength value="8"/>
            <xsd:pattern value="[A-Z,0-9,+,-,_]+"/>
        </xsd:restriction>
    </xsd:simpleType>

is not being found in bbb.xsd

    <xsd:element name="MY_ID" type="nnn:IdType"/>

bbb.xsd and ccc.xsd are included in aaa.xsd

    <xsd:include schemaLocation="bbb.xsd"/>
    <xsd:include schemaLocation="ccc.xsd"/>

joefawcett · February 12th, 2004, 10:03 AM

If the bbb.xsd and ccc.xsd documents are included in aaa.xsd, do you need to add them to the schema cache as well? Shouldn't the pareser do this for you?

--

Joe

June · February 15th, 2004, 09:07 AM

Quote:

quote:Originally posted by joefawcett
If the bbb.xsd and ccc.xsd documents are included in aaa.xsd, do you need to add them to the schema cache as well? Shouldn't the pareser do this for you?

--

Joe

I have tried this. The xml validates in xmlspy, but fails to validate using

XML := CreateOLEObject('MSXML2.DOMDocument.4.0');
  Xml.validateOnParse := False;
  XML.resolveExternals := true;
  XML.async := false;
  XML.load('aaa.xML');

is there a bug with msxml2 ?

joefawcett · February 15th, 2004, 10:18 AM

I believe you first need to create a SchemaCollection with validateOnLoad set to true if you want to automatically bring in included/imported schemas (I don't know Delphi so check syntax):

Code:

XSDL := CreateOLEObject('MSXML2.XMLSchemaCache.4.0');
XSDL.validateOnLoad = True; 
XSDL.add(NSEdit.Text,'aaa.xsd');

Then create dom with validateOnParse set to true:

Code:

XML := CreateOLEObject('MSXML2.DOMDocument.4.0');
XML.validateOnParse := True;
XML.resolveExternals := true;
XML.async := false;
XML.schemas = XSDL;
XML.load(<pathToXml>);

If this doesn't work email me the files and I'll try on my machine.

Joe (MVP - xml)

June · February 16th, 2004, 04:37 PM

I have tried this, and it still fails.
I started off with this added all my XSDs in as XSDL.add(...)

Still getting a undeclared xsd.

What is the best way to send the files. They are noddy so it has to be something basic that is wrong.

How do other people validate XMLs from within code. So many other people have similar problems to this.
If I have to buy some 3rd party product, so be it.

joefawcett · February 17th, 2004, 11:41 AM

I have emailed files back. Basically you are using an old schema system not recognised by the newer msxml parser. I have corrected the schema to be inline with current usage, hope this helps.

Joe (MVP - xml)