#1 How to use the .XSD file for XML validation

[Satish]

hi,

I have tried to run the simpleserver and client and
they are running successfully.
Can I add a .xsd file (XML schema file) at either or
both end to validate the message that has
sent/received ?

Please let me know it is possible or not. If possible
then guide me the steps that I have to follow for this.

Regards,
Satish

[Nobody/Anonymous]

Logged In: NO

Here's an example, it's striped down to the bones!
- no *free*
- no error checking
- no further restriction in the schema
- ...

1. I created a simple service, which response with the value of time() :
soap_env_add_itemf(res->env, NULL, "seconds", "%d", time(NULL));

2. My "gettime.xsd" :
<?xml version="1.0" encoding="UTF-8"?>
<xsd:schema
elementFormDefault="qualified"
xmlns="urn:examples"
targetNamespace="urn:examples"
xmlns:xsd="http://www.w3.org/2001/XMLSchema">
<xsd:element name="getTimeResponse">
<xsd:complexType>
<xsd:sequence>
<xsd:element name="seconds" type="xsd:int"/>
</xsd:sequence>
</xsd:complexType>
</xsd:element>
</xsd:schema>

3. A function for the validation :
int
is_valid_method(char *xsd_file, xmlNodePtr method)
{
xmlDocPtr xsd_doc, doc;
xmlNodePtr root;
xmlSchemaParserCtxtPtr xsd_ctxt;
xmlSchemaPtr xsd;
xmlSchemaValidCtxtPtr valid_ctxt;

/* process the schema */
xsd_doc = xmlReadFile(xsd_file, NULL, 0);
xsd_ctxt = xmlSchemaNewDocParserCtxt(xsd_doc);
xsd = xmlSchemaParse(xsd_ctxt);

/* create a new doc from the "method" element for easier handling */
valid_ctxt = xmlSchemaNewValidCtxt(xsd);
doc = xmlNewDoc(BAD_CAST "1.0");
root = xmlCopyNode(method, 1);
xmlDocSetRootElement(doc, root);

if (xmlSchemaValidateDoc(valid_ctxt, doc)) {
return 0; /* not valid */
} else {
return 1; /* valid */
}
}

4. validate the response in the client :
...
if (!is_valid_method("gettime.xsd", soap_env_get_method(response->env))) {
fprintf("kick this service!\n");
return 1;
}
...

That's all. To verify the validation you may replace the service response with :
soap_env_add_item(res->env, NULL, "seconds", "humppa");

[Nobody/Anonymous]

Logged In: NO

Ups, printf, not fprintf

greetings, Daniel