private static <T> T getParamXPath(
final Class<T> pClass, final String pXpath, final CompactFragment pBody) throws XmlException {
// TODO Avoid JAXB where possible, use XMLDeserializer instead
final boolean string = CharSequence.class.isAssignableFrom(pClass);
Node match;
DocumentFragment fragment =
DomUtil.childrenToDocumentFragment(XMLFragmentStreamReader.from(pBody));
for (Node n = fragment.getFirstChild(); n != null; n = n.getNextSibling()) {
match = xpathMatch(n, pXpath);
if (match != null) {
if (!string) {
XmlDeserializer deserializer = pClass.getAnnotation(XmlDeserializer.class);
if (deserializer != null) {
try {
XmlDeserializerFactory<?> factory = deserializer.value().newInstance();
factory.deserialize(XmlStreaming.newReader(new DOMSource(n)));
} catch (InstantiationException | IllegalAccessException e) {
throw new RuntimeException(e);
}
} else {
return JAXB.unmarshal(new DOMSource(match), pClass);
}
} else {
return pClass.cast(nodeToString(match));
}
}
}
return null;
}
private Object getParam(
final Class<?> pClass,
final String pName,
final ParamType pType,
final String pXpath,
final HttpMessage pMessage)
throws XmlException {
Object result = null;
switch (pType) {
case GET:
result = getParamGet(pName, pMessage);
break;
case POST:
result = getParamPost(pName, pMessage);
break;
case QUERY:
result = getParamGet(pName, pMessage);
if (result == null) {
result = getParamPost(pName, pMessage);
}
break;
case VAR:
result = mPathParams.get(pName);
break;
case XPATH:
result = getParamXPath(pClass, pXpath, pMessage.getBody());
break;
case BODY:
result = getBody(pClass, pMessage);
break;
case ATTACHMENT:
result = getAttachment(pClass, pName, pMessage);
break;
case PRINCIPAL:
{
final Principal principal = pMessage.getUserPrincipal();
if (pClass.isAssignableFrom(String.class)) {
result = principal.getName();
} else {
result = principal;
}
break;
}
}
// XXX generizice this and share the same approach to unmarshalling in ALL code
// TODO support collection/list parameters
if ((result != null) && (!pClass.isInstance(result))) {
if ((Types.isPrimitive(pClass) || (Types.isPrimitiveWrapper(pClass)))
&& (result instanceof String)) {
try {
result = Types.parsePrimitive(pClass, ((String) result));
} catch (NumberFormatException e) {
throw new HttpResponseException(
HttpServletResponse.SC_BAD_REQUEST, "The argument given is invalid", e);
}
} else if (Enum.class.isAssignableFrom(pClass)) {
@SuppressWarnings({"rawtypes"})
final Class clazz = pClass;
@SuppressWarnings("unchecked")
final Enum<?> tmpResult = Enum.valueOf(clazz, result.toString());
result = tmpResult;
} else if (result instanceof Node) {
XmlDeserializer factory = pClass.getAnnotation(XmlDeserializer.class);
if (factory != null) {
try {
result =
factory
.value()
.newInstance()
.deserialize(XmlStreaming.newReader(new DOMSource((Node) result)));
} catch (IllegalAccessException | InstantiationException e) {
throw new XmlException(e);
}
} else {
result = JAXB.unmarshal(new DOMSource((Node) result), pClass);
}
} else {
final String s = result.toString();
// Only wrap when we don't start with <
final char[] requestBody =
(s.startsWith("<") ? s : "<wrapper>" + s + "</wrapper>").toCharArray();
if (requestBody.length > 0) {
result = JAXB.unmarshal(new CharArrayReader(requestBody), pClass);
} else {
result = null;
}
}
}
return result;
}