String alias = element.getAttribute(ATT_ALIAS);
checkForDeprecatedSessionControllerRef(element, pc);
List<BeanMetadataElement> providers = new ManagedList<BeanMetadataElement>();
NamespaceHandlerResolver resolver = pc.getReaderContext().getNamespaceHandlerResolver();
NodeList children = element.getChildNodes();
for (int i = 0; i < children.getLength(); i++) {
Node node = children.item(i);
if (node instanceof Element) {
Element providerElt = (Element)node;
if (StringUtils.hasText(providerElt.getAttribute(ATT_REF))) {
if (providerElt.getAttributes().getLength() > 1) {
pc.getReaderContext().error("authentication-provider element cannot be used with other attributes " +
"when using 'ref' attribute", pc.extractSource(element));
}
NodeList providerChildren = providerElt.getChildNodes();
for (int j = 0; j < providerChildren.getLength(); j++) {
if (providerChildren.item(j) instanceof Element) {
pc.getReaderContext().error("authentication-provider element cannot have child elements when used " +
"with 'ref' attribute", pc.extractSource(element));
}
}
providers.add(new RuntimeBeanReference(providerElt.getAttribute(ATT_REF)));
} else {
BeanDefinition provider = resolver.resolve(providerElt.getNamespaceURI()).parse(providerElt, pc);
Assert.notNull(provider, "Parser for " + providerElt.getNodeName() + " returned a null bean definition");
String providerId = pc.getReaderContext().generateBeanName(provider);
pc.registerBeanComponent(new BeanComponentDefinition(provider, providerId));
providers.add(new RuntimeBeanReference(providerId));
}