private Invocation.Builder appendCookies(Session session, Invocation.Builder request) {
for (Cookie cookie : session.getCookies()) {
request = request.cookie(cookie);
}
return request;
}
@Override
@SuppressWarnings("unchecked")
public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
// get the interface describing the resource
Class<?> proxyIfc = proxy.getClass().getInterfaces()[0];
// response type
Class<?> responseType = method.getReturnType();
// determine method name
String httpMethod = getHttpMethodName(method);
if (httpMethod == null) {
for (Annotation ann : method.getAnnotations()) {
httpMethod = getHttpMethodName(ann.annotationType());
if (httpMethod != null) {
break;
}
}
}
// create a new UriBuilder appending the @Path attached to the method
WebTarget newTarget = addPathFromAnnotation(method, target);
if (httpMethod == null) {
if (newTarget == target) {
// no path annotation on the method -> fail
throw new UnsupportedOperationException("Not a resource method.");
} else if (!responseType.isInterface()) {
// the method is a subresource locator, but returns class,
// not interface - can't help here
throw new UnsupportedOperationException("Return type not an interface");
}
}
// process method params (build maps of (Path|Form|Cookie|Matrix|Header..)Params
// and extract entity type
MultivaluedHashMap<String, Object> headers =
new MultivaluedHashMap<String, Object>(this.headers);
LinkedList<Cookie> cookies = new LinkedList<Cookie>(this.cookies);
Form form = new Form();
form.asMap().putAll(this.form.asMap());
Annotation[][] paramAnns = method.getParameterAnnotations();
Object entity = null;
Type entityType = null;
for (int i = 0; i < paramAnns.length; i++) {
Map<Class, Annotation> anns = new HashMap<Class, Annotation>();
for (Annotation ann : paramAnns[i]) {
anns.put(ann.annotationType(), ann);
}
Annotation ann;
Object value = args[i];
if (anns.isEmpty()) {
entityType = method.getGenericParameterTypes()[i];
entity = value;
} else {
if (value == null && (ann = anns.get(DefaultValue.class)) != null) {
value = ((DefaultValue) ann).value();
}
if (value != null) {
if ((ann = anns.get(PathParam.class)) != null) {
newTarget = newTarget.resolveTemplate(((PathParam) ann).value(), value);
} else if ((ann = anns.get((QueryParam.class))) != null) {
if (value instanceof Collection) {
newTarget =
newTarget.queryParam(((QueryParam) ann).value(), convert((Collection) value));
} else {
newTarget = newTarget.queryParam(((QueryParam) ann).value(), value);
}
} else if ((ann = anns.get((HeaderParam.class))) != null) {
if (value instanceof Collection) {
headers.addAll(((HeaderParam) ann).value(), convert((Collection) value));
} else {
headers.addAll(((HeaderParam) ann).value(), value);
}
} else if ((ann = anns.get((CookieParam.class))) != null) {
String name = ((CookieParam) ann).value();
Cookie c;
if (value instanceof Collection) {
for (Object v : ((Collection) value)) {
if (!(v instanceof Cookie)) {
c = new Cookie(name, v.toString());
} else {
c = (Cookie) v;
if (!name.equals(((Cookie) v).getName())) {
// is this the right thing to do? or should I fail? or ignore the difference?
c = new Cookie(name, c.getValue(), c.getPath(), c.getDomain(), c.getVersion());
}
}
cookies.add(c);
}
} else {
if (!(value instanceof Cookie)) {
cookies.add(new Cookie(name, value.toString()));
} else {
c = (Cookie) value;
if (!name.equals(((Cookie) value).getName())) {
// is this the right thing to do? or should I fail? or ignore the difference?
cookies.add(
new Cookie(name, c.getValue(), c.getPath(), c.getDomain(), c.getVersion()));
}
}
}
} else if ((ann = anns.get((MatrixParam.class))) != null) {
if (value instanceof Collection) {
newTarget =
newTarget.matrixParam(((MatrixParam) ann).value(), convert((Collection) value));
} else {
newTarget = newTarget.matrixParam(((MatrixParam) ann).value(), value);
}
} else if ((ann = anns.get((FormParam.class))) != null) {
if (value instanceof Collection) {
for (Object v : ((Collection) value)) {
form.param(((FormParam) ann).value(), v.toString());
}
} else {
form.param(((FormParam) ann).value(), value.toString());
}
}
}
}
}
if (httpMethod == null) {
// the method is a subresource locator
return WebResourceFactory.newResource(responseType, newTarget, true, headers, cookies, form);
}
// accepted media types
Produces produces = method.getAnnotation(Produces.class);
if (produces == null) {
produces = proxyIfc.getAnnotation(Produces.class);
}
String[] accepts = produces == null ? null : produces.value();
// determine content type
String contentType = null;
if (entity != null) {
Consumes consumes = method.getAnnotation(Consumes.class);
if (consumes == null) {
consumes = proxyIfc.getAnnotation(Consumes.class);
}
if (consumes != null && consumes.value().length > 0) {
// TODO: should consider q/qs instead of picking the first one
contentType = consumes.value()[0];
}
}
Invocation.Builder builder;
if (accepts != null) {
builder = newTarget.request(accepts);
} else {
builder = newTarget.request();
}
// apply header params and cookies
builder.headers(headers);
for (Cookie c : cookies) {
builder = builder.cookie(c);
}
Object result;
if (entity == null && !form.asMap().isEmpty()) {
entity = form;
contentType = MediaType.APPLICATION_FORM_URLENCODED;
} else {
if (contentType == null) {
contentType = MediaType.APPLICATION_OCTET_STREAM;
}
if (!form.asMap().isEmpty()) {
if (entity instanceof Form) {
((Form) entity).asMap().putAll(form.asMap());
} else {
// TODO: should at least log some warning here
}
}
}
GenericType responseGenericType = new GenericType(method.getGenericReturnType());
if (entity != null) {
if (entityType instanceof ParameterizedType) {
entity = new GenericEntity(entity, entityType);
}
result = builder.method(httpMethod, Entity.entity(entity, contentType), responseGenericType);
} else {
result = builder.method(httpMethod, responseGenericType);
}
return result;
}