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 void serializeValue(final HttpServletResponse pResponse, Object value)
throws TransformerException, IOException, FactoryConfigurationError {
if (value instanceof Source) {
setContentType(pResponse, "application/binary"); // Unknown content type
Sources.writeToStream((Source) value, pResponse.getOutputStream());
} else if (value instanceof Node) {
pResponse.setContentType("text/xml");
Sources.writeToStream(new DOMSource((Node) value), pResponse.getOutputStream());
} else if (value instanceof XmlSerializable) {
pResponse.setContentType("text/xml");
XMLOutputFactory factory = XMLOutputFactory.newInstance();
factory.setProperty(XMLOutputFactory.IS_REPAIRING_NAMESPACES, Boolean.TRUE);
try {
XmlWriter out =
XmlStreaming.newWriter(
pResponse.getOutputStream(), pResponse.getCharacterEncoding(), true);
try {
out.startDocument(null, null, null);
((XmlSerializable) value).serialize(out);
out.endDocument();
} finally {
out.close();
}
} catch (XmlException e) {
throw new TransformerException(e);
}
} else if (value instanceof Collection) {
final XmlElementWrapper annotation = getElementWrapper();
if (annotation != null) {
setContentType(pResponse, "text/xml");
try (OutputStream outStream = pResponse.getOutputStream()) {
writeCollection(
outStream, getGenericReturnType(), (Collection<?>) value, getQName(annotation));
}
}
} else if (value instanceof CharSequence) {
setContentType(pResponse, "text/plain");
pResponse.getWriter().append((CharSequence) value);
} else {
if (value != null) {
try {
final JAXBContext jaxbContext = JAXBContext.newInstance(getReturnType());
setContentType(pResponse, "text/xml");
final JAXBSource jaxbSource = new JAXBSource(jaxbContext, value);
Sources.writeToStream(jaxbSource, pResponse.getOutputStream());
} catch (final JAXBException e) {
throw new MessagingException(e);
}
}
}
}
private void writeCollection(
final OutputStream outputStream,
final Type collectionType,
final Collection<?> collection,
final QName outerTagName) {
final Class<?> rawType;
if (collectionType instanceof ParameterizedType) {
final ParameterizedType returnType = (ParameterizedType) collectionType;
rawType = (Class<?>) returnType.getRawType();
} else if (collectionType instanceof Class<?>) {
rawType = (Class<?>) collectionType;
} else if (collectionType instanceof WildcardType) {
final Type[] UpperBounds = ((WildcardType) collectionType).getUpperBounds();
if (UpperBounds.length > 0) {
rawType = (Class<?>) UpperBounds[0];
} else {
rawType = Object.class;
}
} else if (collectionType instanceof TypeVariable) {
final Type[] UpperBounds = ((TypeVariable<?>) collectionType).getBounds();
if (UpperBounds.length > 0) {
rawType = (Class<?>) UpperBounds[0];
} else {
rawType = Object.class;
}
} else {
throw new IllegalArgumentException("Unsupported type variable");
}
Class<?> elementType;
if (Collection.class.isAssignableFrom(rawType)) {
final Type[] paramTypes = Types.getTypeParametersFor(Collection.class, collectionType);
elementType = Types.toRawType(paramTypes[0]);
if (elementType.isInterface()) {
// interfaces not supported by jaxb
elementType = Types.commonAncestor(collection);
}
} else {
elementType = Types.commonAncestor(collection);
}
try {
// As long as JAXB is an option, we have to know that this is a StAXWriter as JAXB needs to
// write to that.
try (XmlWriter xmlWriter = XmlStreaming.newWriter(outputStream, "UTF-8")) {
Marshaller marshaller = null;
XmlWriterUtil.smartStartTag(xmlWriter, outerTagName);
for (Object item : collection) {
if (item != null) {
if (item instanceof XmlSerializable) {
((XmlSerializable) item).serialize(xmlWriter);
} else if (item instanceof Node) {
XmlWriterUtil.serialize(xmlWriter, (Node) item);
} else {
if (marshaller == null) {
JAXBContext jaxbcontext = null;
if (elementType == null) {
jaxbcontext = newJAXBContext(JAXBCollectionWrapper.class);
} else {
jaxbcontext = newJAXBContext(JAXBCollectionWrapper.class, elementType);
}
marshaller = jaxbcontext.createMarshaller();
}
marshaller.marshal(item, (XMLStreamWriter) getDelegateMethod().invoke(xmlWriter));
}
}
}
XmlWriterUtil.endTag(xmlWriter, outerTagName);
}
} catch (Throwable e) {
throw new MessagingException(e);
}
}
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;
}