On Thu, 2006-03-02 at 18:16 -0800, Michelle Lin wrote:
> Digester Experts:
>
> I have the following simple XML doc:
>
> <?xml version="1.0" encoding="ASCII"?>
> <xyz xmlns="http://mynamespace";
> xmlns:xsd="http://www.w3.org/2001/XMLSchema";>
> <property name="a" type="xsd:string"/>
> </xyz>
>
> How can I use the digester to parse this XML doc and
> get the value of "type" attribute as QName of:
> namespace: "http://www.w3.org/2001/XMLSchema";
> prefix: "xsd"
> localPart: "string"
>
> Any suggestions/pointers are very much appreciated.
Method Digester.findNamespaceURI can map from the string "xsd" to the
associated URI.
In order to call it at the correct time I would recommend creating a
custom Rule. eg:
// when this rule fires, if the current element has an attribute
// of the specified name, then it is assumed to be a prefix:ename
// pair. It is converted into a QName object and passed to a bean
// property (specified by propName) on the top object on the
// digester stack
public class SetQNameRule extends Rule {
private String attrName;
private String propName;
public SetQNameRule(String attrName, String propName) {
this.attrName = attrName;
this.propName = propName;
}
public void begin(namespace, name, Attributes attrs) {
// get attribute with name this.attrName
// split it on ':' char
// call digester.findNamespaceURI to convert prefix to URI
// create QName object
//
// get top object on digester stack
// Use BeanUtils to assign the qname to its propName property
}
}
The above is basically a simplified version of CallMethodRule.
As an alternative, create a Rule based on CallParamRule. Of course
you'll then need to use your rule in combination with a CallMethodRule.
Another alternative would be to register a custom (String->QName)
converter with the BeanUtils framework. That's a bit scary though as the
converter needs a reference back to the Digester instance in order to
map prefix->URI but BeanUtils converters are effectively "global". If
you've got a multithreaded app things could go badly wrong.
Hope this helps.
Regards,
Simon
---------------------------------------------------------------------
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
