My problem is similar to this one https://discourse.hibernate.org/t/hibernate-throws-org-hibernate-id-identifiergenerationexception-attempted-to-assign-id-from-null-one-to-one-property/1777 but I am getting a different exception after applying the answer from this thread. My entities: Controller with corresponding Spring Data Repository: With this payload: I am getting an endless nested response with proper fields(distributor -> location -> distributor -> location ..), which ends with SO Error: I can’t fathom why does
Tag: java
Send string value from one method to another
My first method deviceList is able to work successfully and I am able to store a value in the variable String.id. I am then trying to use that string in my second method addReview1 to implement that …
Error starting ApplicationContext in Spring when add @OneToOne Annotation
: I am a beginner in Java Spring MVC and I want to create a simple program using spring boots. But I have a problem: When I add @OneToOne and @JoinColumn to my model class, the project doesn’t start! Error: Error starting ApplicationContext. To display the conditions report re-run your application with ‘debug’ enabled. 2020-05-24 15:24:45.140 ERROR 5368 — [
Java put/putShort with JS
Can someone tell me the equivalent of java put and putShort in JavaScript ? Answer I think what you are looking for is first: create the array buffer: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/ArrayBuffer then use a data view to get and set into it: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/DataView In dataview you can control the byte ordering (big/little endian) And here is an example, getting binary representation of
Combine two Stream into one Flux
How can I combine two streams Stream<String> into Flux? What I understand is that I might need to use Flux create method to create this but I am not really sure about it: Please help. Answer Concat the Streams into one and then invoke Flux#fromStream: Another way of doing this would be to create a Flux using Flux#fromStream and then
How do I load a Ressource Path in multi-projects in proper project?
I have to use this project configuration: Project 1 + src + Model + Datamodel.dtd Project 2 + src Project 1 does some work with xml and should load the dtd from the folder “Model”. I put this …
What is the name of this sorting method, how does it work and how does it compare to Arrays.sort()?
Q#1 I am searching for a method to sort an array in ascending order. I found this and it works, but I don’t understand how it works. Q#2 As for the Big O notation, which method is better (n will be small in my case), the method below or Arrays.sort()? Note: array is equal to arr.length. Answer #1 The method
onCreateOptionsMenu not being called
onCreateOptionsMenu does not get called in a fragment. I have to manually call setHasOptionsMenu(true) in onCreatedView() but this causes the item.itemId be an empty String “” in the onOptionsItemSelected() and therefore i can’t detect which menu item was tapped. I’m currently using this in a fragment: Answer Call super.onCreateOptionsMenu(menu,inflater) after menu inflate This may more help Ref :: https://stackoverflow.com/a/15654039/11393354 try
Wildcard not allowed for Iterable in Java
I have following code setup. But this is not allowed as wildcard is not allowed for Iterable. What actually Java tries to a achieve here by not allowing this? What modifications would get this working? Answer When a class instance is created, it invokes the initializer of the super type. But you can’t use wildcards for instance creation, hence your
In GAE Java Standard environment how to scale based on memory consumption?
I developed an application, that makes some calculations, and those calculations consumes memory, the user need to use same machine recursivelly then after 15 minutes without use the memory is cleared, but if I got many users acessing the instance I got memory out problems, its normal, because the algorithm was created to consume memory, the point is I can