OpenSAML user discussion

[Joncheng Kuo <>]

Hi,

Attached is my implementation of the constructor of 
SAMLAttributeStatement that takes an DOM Element. It wasn't implemented 
in the resouce code that I retrieved from the CVS repository this week. 
I implemented it in a way similar to SAMLAuthenticationStatement, but
this implementation uses two utility methods, getFirstChildElement() and 
getNextSiblingElement() to increase the readability.

Besides, I found that XML.ParserPool.resolveEntity() does not work in 
one of my Linux machines (Mandrake 8.2). What happen is that I found 
systemId can be either
    file:/home/user/cs-sstc-schema-assertion-01.xsd
or
    file:cs-sstc-schema-assertion-01.xsd.

In the second case, the current implementation does not work.

Cheers,
Joncheng Kuo
    public SAMLAttributeStatement(Element e)
        throws SAMLException
    {
        if (e==null || !XML.SAML_NS.equals(e.getNamespaceURI()) || 
!"AttributeStatement".equals(e.getLocalName()))
        {
            QName q=QName.getQNameAttribute(e,XML.XSI_NS,"type");
            if (!XML.SAML_NS.equals(e.getNamespaceURI()) || 
!"Statement".equals(e.getLocalName()) || q==null ||
                !XML.SAML_NS.equals(q.getNamespaceURI()) || 
!"AttributeStatementType".equals(q.getLocalName()))
                throw new InvalidAssertionException(SAMLException.RESPONDER, 
"SAMLAttributeStatement() requires saml:AttributeStatement at root");
        }
        root = e;

        // Extract subject.
        Node n = getFirstChildElement(e);
        subject = new SAMLSubject((Element)n);

        // Extract attributes.
        java.util.Vector v = new java.util.Vector();
        n = getNextSiblingElement(n);
        while (n != null)
        {
            if (XML.SAML_NS.equals(n.getNamespaceURI()) && 
"Attribute".equals(n.getLocalName()))
                v.add(new SAMLAttribute((Element)n));
            n = getNextSiblingElement(n);
        }
        if (v.size() > 0)
            v.toArray(attrs=new SAMLAttribute[v.size()]);
    }

    public static Node getFirstChildElement(Element e)
    {
        Node n = e.getFirstChild();
        while (n != null && n.getNodeType() != Node.ELEMENT_NODE)
            n = n.getNextSibling();
        return n;
    }

    public static Node getNextSiblingElement(Node n)
    {
        n = n.getNextSibling();
        while (n != null && n.getNodeType() != Node.ELEMENT_NODE)
            n = n.getNextSibling();
        return n;
    }