how to use xpath in vala on a node object

Question

How do I use XPath in Vala on a Xml.Node object?

The only examples I can find is were a Context is created from a Doc object, but I don't have a Xml.Doc object to begin with. Is there a way I can convert Xml.Node into Xml.Doc? Or is there some other way?

The example I'm looking at is : https://live.gnome.org/Vala/XmlSample

Thanks.

nemequ · Accepted Answer · 2012-08-23T06:07:33.627

1

The Xml.Node class has a Xml.Doc doc member. You should be able to use that to get the relevant Xml.Doc for a node.

edited Aug 23 '12 at 06:07

answered Jul 01 '12 at 00:48

nemequ

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score 0 · Answer 2 · answered Aug 22 '12 at 17:31

I will be interested on this too, here is what I have been doing so far (I am just learning Vala)

    // Get the node's name
    string node_name = iter->name;

    switch (node_name){
            case "host":
                    this.host = (string) iter->get_content ();
                break;   
            case "username":
                    this.username = (string) iter->get_content ();
                break;   
            case "password":
                    this.password = (string) iter->get_content ();
                break;   
            case "database":
                    this.database = (string) iter->get_content ();
                break;   
             case "port":
                    this.port = (int)iter->get_content ();
                break;   

 }

But for obvious reasons this works fine with a very small and simple xml but when you get to a more complex and bigger xml then your performance will suffer greatly.

You can just use Xml.Node.doc to get the relevant Xml.Doc from the node which you can then use to evaluate an XPath query. — nemequ, Aug 23 '12 at 06:12

how to use xpath in vala on a node object

2 Answers2