DOMScanner.java 文件源码

/**
 * Recursively visit ancestors and build up {@link NamespaceSupport} oject.
 */
private void buildNamespaceSupport(NamespaceSupport nss, Node node) {
    if(node==null || node.getNodeType()!=Node.ELEMENT_NODE)
        return;

    buildNamespaceSupport( nss, node.getParentNode() );

    nss.pushContext();
    NamedNodeMap atts = node.getAttributes();
    for( int i=0; i<atts.getLength(); i++ ) {
        Attr a = (Attr)atts.item(i);
        if( "xmlns".equals(a.getPrefix()) ) {
            nss.declarePrefix( a.getLocalName(), a.getValue() );
            continue;
        }
        if( "xmlns".equals(a.getName()) ) {
            nss.declarePrefix( "", a.getValue() );
            continue;
        }
    }
}