I'm building a REST api using Quarkus and Kotlin. I'm trying to include a path parameter in my function by using the #PathParam annotation. This is what I have:
#GET
#Produces(MediaType.APPLICATION_JSON)
#Path("/{userId}")
fun getUser(#PathParam userId: UUID) : GetUserResponse =
try {
GetUserSuccess(userRepository.find("id", userId))
} catch (e: NotFoundException) {
GetUserFailure(e)
}
Unfortunately I'm getting an error stating that there's no value being passed for parameter value.
I googled some stuff, and most of what I found is about wrong imports. I double checked that part, but I import the correct one: import javax.ws.rs.*, which also includes the PathParam.
Anyone knows what's wrong with this?
The answer would be to change it to:
fun getUser(#PathParam("userId") userId : UUID)
Inspirerd by Paul Samsotha's answer.
Alternatively you could also use the #RestPath annotation from RESTEasy:
fun getUser(#RestPath userId: UUID)
Related
I would like to know if there is a way to do a cast from Single<Object> to Single<CustomClass>.
I have a class that implements a method that should return a Single<Customer>, I implemented the search like here
Single.create(single -> {
CustomerServiceDto customer = mapper.map(customerRepository.findById(id).get(), CustomerServiceDto.class);
single.onSuccess(customer);
});
There isn't any problem. It's what I need. This create returns me a Single<Customer> but when I implement another function to handling an exception
Single.create(single -> {
CustomerServiceDto customer = mapper.map(customerRepository.findById(id).get(), CustomerServiceDto.class);
single.onSuccess(customer);
}).onErrorReturn(error -> new CustomerServiceDto());
It returns me a Single<Object>. Can I do a casting here? To avoid change the method's signature. I tried with the classic (Single<Customer>) Single<Object> instance, but it isn't work. Thanks for your advice.
The answer was the #dano's comment. Thanks, #dano.
I'm having some issues with a Wicket (8.0.0-M4) NumberTextField in Kotlin (1.1.0).
My stripped-down form looks like this:
class Test : AbstractWebPage() {
val housenumberModel: Model<Int> = Model<Int>()
val housenumber = NumberTextField<Int>("housenumberModel", housenumberModel)
val form: Form<Unit> = object : Form<Unit>("adressForm") {}
override fun onInitialize() {
super.onInitialize()
form.add(housenumber.setRequired(false))
form.add(object : SubmitLink("submit") {
override fun onSubmit() {
super.onSubmit()
println(housenumberModel.`object`) // this is line 28
}
})
add(form)
}
}
After submitting the form I get the following stacktrace:
java.lang.ClassCastException: java.lang.String cannot be cast to
java.lang.Number
at com.mycompany.test.pages.Test$onInitialize$1.onSubmit(Test.kt:28)
at org.apache.wicket.markup.html.form.Form.delegateSubmit(Form.java:1312)
at org.apache.wicket.markup.html.form.Form.process(Form.java:979)
at org.apache.wicket.markup.html.form.Form.onFormSubmitted(Form.java:802)
at org.apache.wicket.markup.html.form.Form.onRequest(Form.java:715)
at org.apache.wicket.core.request.handler.ListenerRequestHandler.internalInvoke(ListenerRequestHandler.java:301)
at org.apache.wicket.core.request.handler.ListenerRequestHandler.invoke(ListenerRequestHandler.java:250)
at org.apache.wicket.core.request.handler.ListenerRequestHandler.invokeListener(ListenerRequestHandler.java:210)
at org.apache.wicket.core.request.handler.ListenerRequestHandler.respond(ListenerRequestHandler.java:203)
at org.apache.wicket.request.cycle.RequestCycle$HandlerExecutor.respond(RequestCycle.java:912)
at org.apache.wicket.request.RequestHandlerExecutor.execute(RequestHandlerExecutor.java:65)
at org.apache.wicket.request.cycle.RequestCycle.execute(RequestCycle.java:283)
at org.apache.wicket.request.cycle.RequestCycle.processRequest(RequestCycle.java:253)
at org.apache.wicket.request.cycle.RequestCycle.processRequestAndDetach(RequestCycle.java:221)
at org.apache.wicket.protocol.http.WicketFilter.processRequestCycle(WicketFilter.java:262)
at org.apache.wicket.protocol.http.WicketFilter.processRequest(WicketFilter.java:204)
at org.apache.wicket.protocol.http.WicketFilter.doFilter(WicketFilter.java:286)
[...]
If I use
val housenumberModel: Model<Int> = Model.of(0)
instead of
val housenumberModel: Model<Int> = Model<Int>()
everything works fine. But since my NumberTextField is optional I don't want to have it pre-initialized with 0.
Me and my colleagues were trying to change the type signature of the Model in every way we could imagine but came to no solution. A co-worker suggested to write a custom Wicket converter since Kotlins Int is represendeted as a primitive type (From the docs: "On the JVM, non-nullable values of this type are represented as values of the primitive type int.") Even though I don't know yet if this would work it seems like an overkill for me.
Another hack I could think of: writing some JavaScript to delete the zero from the input field. Also not really something I would want to do.
Question: Is there a simple solution to my problem?
(And as a bonus-question: has already anyone written a larger Wicket application in Kotlin and could tell me if this combination is ready for prime time to develop a critical project with this stack or is my problem just the tip of the iceberg?)
[edit]
Solution as pointed out by svenmeier:
Using
val housenumber = NumberTextField<Int>("housenumberModel", housenumberModel, Int::class.java)
works.
Or as an alternative:
val housenumbervalue: Int? = null
val housenumberModel: IModel<Int> = PropertyModel<Int>(this, "housenumbervalue")
val housenumber = NumberTextField<Int>("housenumberModel", housenumberModel)
Because of type erasure your NumberTextField cannot detect the generic type parameter of your model. Since your model object is null, it cannot be used to derive the type either.
In this case Wicket assumes a String model object type :/.
Either provide the type to the NumberTextField explicitly, or use a model that keeps its generic information, e.g. a PropertyModel.
There is a way to tell wicket about the type you want, it is by adding the type in the constructor. More here.
In Java it looks like this:
new NumberTextField<Integer>("housenumberModel", housenumberModel, Integer.class);
I am writing a unit test for a plugin using Dynamics CRM with RhinoMocks.
After stubbing out the OrganizationService.Retrieve() method, when I invoke the stubbed out method, I am getting null back.
From what I can see (correct me if I'm wrong), is that the stubbed out method signature must the same as the invocation signature.
Here is my code:
TestSetup
var someGuid = Guid.Empty;
var organisationServiceMock = MockRepository.GenerateMock<IOrganizationService>();
organisationServiceMock.Expect(x => x.Retrieve("someCrmEntity", someGuid, SomeCrmEntityColumnSetQuery.ColumnSet))
.Return(new Entity
{
LogicalName = "someCrmEntity",
Id = Guid.NewGuid(),
});
SomeCrmEntityColumnSetQuery Code
public static class SomeCrmEntityColumnSetQuery
{
public static ColumnSet ColumnSet => new ColumnSet("column1", "column2");
}
Invocation Code
var someEntity = organisationServiceMock.Retrieve("someCrmEntity", someGuid, SomeCrmEntityColumnSetQuery.ColumnSet);
//someEntity is null
Things I have tried
Removed the ColumnSet and replaced it with null - this works
Replaced the static class SomeCrmEntityColumnSetQuery with a default instance (new ColumnSet())
I have set the someGuid to Guid.Empty thinking that it was not "joining" on the correct Guid hence the null return value.
I have tried to replace .Expect() with .Stub() - no joy
Edit
In the expectation, I have tried the .WhenCalled(...) and that is how I found out that if I replace the columnSet argument with a null in the expectation and the invocation, it works. So it's go to do with something in my static class that represents a ColumnSet. The code works as I have it running in my DEV environment.
If anyone can share some light on this, that would be magic!
Charles
So I found the answer after watching a PluralSight video on RhinoMocks.
My problem was that when setting up the stub, the stub does not take values but rather the signature of the method that you are stubbing out. For e.g:
var organisationServiceMock = MockRepository.GenerateMock();
//Wrong
organisationServiceMock.Expect(x => x.Retrieve("someCrmEntity", someGuid, SomeCrmEntityColumnSetQuery.ColumnSet)).Return(new Entity());
//The stub does not care about what values are being sent into the method when invoked but rather if the method signature types match.
//Correct
organisationServiceMock.Expect(x => x.Retrieve(Arg.Is.Anything, Arg.Is.Anything, Arg.Is.Anything)).Return(new Entity());
//During the invocation, stubbed method now expects the first argument to be a string, then 2nd to be a Guid, 3rd to be a ColumnSet.
I hope this helps anyone who has also been struggling with this. :)
I would like to use Player.IO from Yahoo Games Network in my Unity javascript code. PlayerIO provides example project for unity written only in C# so I am having problems with getting the callbacks work.
PlayerIO.Connect description from Player.IO documentation for Unity (available here):
public void Connect (string gameId, string connectionId, string userId, string auth,
string partnerId, String[] playerInsightSegments,
Callback<Client> successCallback, Callback<PlayerIOError> errorCallback)
So how to make these callbacks work?
The following part of the question shows the ways I have already tried, but didn't work.
Firstly I've tried this way (as I know from javascript):
function success(client : Client) {
//function content
}
PlayerIOClient.PlayerIO.Connect(pioGameId, pioConnectionId, pioUserId, pioAuth, pioPartnerId, success, failed);
.
That was not right and I've learned that I should use delegates.
From Unity3D official tutorials (available here), the right use of delegates in JS would be like this (using the Function type):
var successDelegate : Function;
function success(client : Client) {
//function content
}
function Start () {
successDelegate = success;
PlayerIOClient.PlayerIO.Connect(pioGameId, pioConnectionId, pioUserId, pioAuth, pioPartnerId, success, failed);
}
This is causing the following error:
InvalidCastException: Cannot cast from source type to destination type.
Main+$Start$2+$.MoveNext ()
.
After that I've found a topic on Player.IO forum (available here) called Utilizing Player.IO in Unity Javascript. Suggested approach of creating delegates in JS by the author of that topic: go straight to the .Net type and declare them as System.Delegate.
var pioConnectSuccessCallback : System.Delegate;
function success(client : Client) {
//function content
}
function Start () {
pioConnectSuccessCallback = System.Delegate.CreateDelegate(typeof(PlayerIOClient.Callback.<PlayerIOClient.Client>), this, "success");
PlayerIOClient.PlayerIO.Connect(pioGameId, pioConnectionId, pioUserId, pioAuth, pioPartnerId, pioConnectSuccessCallback, pioConnectErrorCallback);
}
This is unfortunately also not working for me, although the guys on the forum present it as a working solution (but it may be outdated).
The error I'm getting:
Assets/Main.js(51,35): BCE0023: No appropriate version of
'PlayerIOClient.PlayerIO.Connect' for the argument list '(String,
String, String, String, String, System.Delegate, System.Delegate)' was
found.
So it seems like Connect method doesn't like System.Delegate as a parameter or those were not initialized well.
The 3rd way is working, the function is expecting 8 parameters and that was why it didn't work for me.
Running a Play! app with Scala. I'm doing a request where the response is expected to be a JSON string. When checking the debugger, the JsonElement returns OK with all information as expected. However, the problem is when I try to actually run methods on that JsonElement.
val json = WS.url("http://maps.googleapis.com/maps/api/geocode/json?callback=?&sensor=true&address=%s", startAddress+","+startCity+","+startProvince).get.getJson
val geocoder = json.getAsString
The only error I get back is Unsupported Operation Exception: null and I've tried this on getAsString and getAsJsonObject and getAsJsonPrimitive
Any idea why it's failing on all methods? Thanks.
I had a similar problem and I had to change jsonObject.getAsString() to jsonObject.toString();
Maybe your JsonElement is a JsonNull
What you could do is to first check that it isn't by using json.isJsonNull
Otherwise, try to get its String representation with json.toString
In my case I just needed to get the element as an empty string if it is null, so I wrote a function like this:
private String getNullAsEmptyString(JsonElement jsonElement) {
return jsonElement.isJsonNull() ? "" : jsonElement.getAsString();
}
So instead of
val geocoder = json.getAsString
You can just use this
val geocoder = getNullAsEmptyString(json);
It returns "" if the element is null and the actual string if it is not
To add to #Henry's answer. In the spirit of Kotlins "OrNull" Adding an extension function:
fun JsonElement.asStringOrNull(): String? {
return if (isJsonNull) null else asString
}
The class JsonElement will throw Unsupported Operation Exception for any getAs<Type> method, because it's an abstract class and makes sense that it is implemented in this way.
For some reason the class JsonObject, does not implement the getAs<Type> methods, so any call to one of these methods will throw an exception.
Calling the toString method on a JsonElement object, may solve your issue in certain circumstances, but isn't probably what you want because it returns the json representation as String (e.g. \"value\") in some cases.
I found out that also a JsonPrimitive class exists and it does implement the getAs<Type> methods. So probably the correct way to proceed is something like this:
String input = "{\"key1\":\"value1\",\"key2\":\"value2\"}";
JsonParser parser = new JsonParser();
JsonElement jsonTree = parser.parse(input);
if(jsonTree != null && jsonTree.isJsonObject()) {
JsonObject jsonObject = jsonTree.getAsJsonObject();
value = jsonObject.get("key1").getAsJsonPrimitive().getAsString()
}
PS. I removed all the nullability mgmt part. If you are coding in Java you probably want to manage this in a better way.
see GitHub source code for JsonElement:
https://github.com/google/gson/blob/master/gson/src/main/java/com/google/gson/JsonElement.java#L178