etudes | Computer Graphics Études with WebGL and Three.js | Graphics library
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Computer Graphics Études with WebGL and Three.js
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QUESTION
I am developing an API (JAXRS) using Java EE and trying to implement JPA. For that, I'm using EclipseLink as far as I know, and my app' is deployed on a Payara Server.
When I'm trying to use the persist method from EntityManager, there is nothing happen, with no error message or something else.
Here is my DAO class:
...ANSWER
Answered 2020-Nov-15 at 16:50I'm confused. You've configured the persistence unit to point to a data source managed by your container (java:global/mariadb
) and also configured the JDBC properties? You have to make up your mind, either use the datasource provided by the container or configure it yourself, but not both at the same time (in other words, the jta-data-source
property is mutually exclusive with the javax.persistence.jdbc.*
properties).
You're getting the error because you've set the persistence unit to use JTA, and then you're trying to begin a transaction somewhere using em.getTransaction()
, which is not allowed for JTA. Also, you put @PersistenceContext
on top of entityManager
, which means right after the constructor gets invoked, the entityManager
is probably getting overwritten by an injected instance.
The solution is, assuming you do actually want to use JTA, to inject the EntityManager
using @PersistenceContext
(you shouldn't have to initialize it manually), and then annotating the methods that you want to execute atomically with @Transactional
, instead of trying to use entityManager.getTransaction()
.
QUESTION
hellow i wanna create a table that shows you the schedular of your week it didn'k work it put for each work of the day in another row but i wanted it in a single row
...ANSWER
Answered 2020-Jun-28 at 15:05You can't have variable number of columns for each case.
What you can do is get a comma separated list of the concatenated values of the columns, with string_agg()
all in 1 column:
QUESTION
I have a QAction
which when clicked emits a triggered
signal which calls the slot method RegroupEtudes::OnNouvelleEtude
ANSWER
Answered 2020-May-19 at 13:39Since Qt5, you can use a lambda expression and the new connect
synthax to pass an extra parameter to your slot:
QUESTION
I have an angular 7 project that I'm developping. I use server-side rendering to allow facebooks crawler to work properly. Until now, I've developped already some components and haven't encountered any troubles yet. But now I'm having a problem since I'm working on a component using fullcalendar...
There are no troubles serving the application using ng s
. But when I try to build the application using server-side rendering npm run build:ssr && npm run serve:ssr
, I'm now receiving the following error: npm ERR! code ELIFECYCLE
Until now I made a npm install
and npm audit fix
but this hasn't helped.
I suppose that the problem comes from a bad configuration in either my
app.module.ts
or app.server.module.ts
but I can't figure it out.
Here the content of the error message:
...ANSWER
Answered 2019-Apr-30 at 13:11The problem is coming from a third-party library.
QUESTION
I am debutant at html and css. I just wanted to create my first website using html and css but in the navbar
I found that I cant make and
fa
icons in the same line, is there any solution please?
here is the code:
...ANSWER
Answered 2019-Nov-23 at 13:14************************ SOLVED ************************
Here is your updated code.
QUESTION
I am trying to create an Array using the following method, but so far I only managed to get the data one by one. What I actually wish to accomplish is to store an array with all the data so I can store it in a database using PHP.
So far, my problem is that I can't seem to manage to create a simple array with JS, when I tried using "push" it would return empty arrays.
Is anyone able to help me?
...ANSWER
Answered 2019-Nov-12 at 02:21If you try without the Sortable
it works with the push method. Maybe the problem is with the Sortable
. And it's correct to use the push
method and it should work.
EDIT: I tried again, and it works with the Sortable, when you update some position, it fill the array.
QUESTION
A visually impaired user of a musical ear-training website I created tells me her screen reader is not properly pronouncing key names. In a selector dropdown on the page I have the flatted key names spelled with the proper unicode runes for a musical accidentals, e.g D♭, E♭, etc.
The screen reader apparently has no pronunciation for this symbol. I could change labels to D-flat, E-flat, etc. She says these spellings are pronounced sensibly.
On the other hand, I'd like to retain proper musical spelling for unimpaired users.
Is there a construct in html or css that allows one to provide an alternate string that will be discovered and read by screen readers?
For reference, website is at https://etudes.ellisandgrant.com and the source code is at https://github.com/Michael-F-Ellis/infinite-etudes
...ANSWER
Answered 2019-Jun-13 at 18:31aria-label
is what you are looking for here. You should be able to put aria-label="D flat"
and it will be read out correctly
QUESTION
I have some extracted text from pdf files, i'm looking for some keyWords to match job title, i tried to use many regex to get only the lines that not starting by a date ( any date format) but i have to get other line that start by any another number or words.
i hope find a brilient idea here. Best
I've tried this two regex to find ingenieur key word without any success :
...ANSWER
Answered 2019-Apr-06 at 13:44You might use:
QUESTION
I know this has been asked in this forum many times, but I read every topic about it and tried many suggested solutions and still, I'm not able to make it work for my own case.
Here's this case. I have this grid of content cards, but depending on the length of the content or whether or not every element in the card is used, the card has a different height. So, elements are not aligned from one card to another. I'd like to edit my code so the top of each element starts at a relative height so they are aligned.
Codepen: https://codepen.io/louischausse/pen/VRQxgB
I'd like that top of each child div align with each other
Thanks for your help
...ANSWER
Answered 2019-Mar-20 at 08:01Is here what you want :
- All the events title aligned
- All the tag aligned
- The button always at the bottom
What you will need
All the card having the same height
The card being a
flex column
For mor clarity, I'll add the necessary css at the end of your css.
QUESTION
I'm developing my first java software as project, using what i learned from the college :'(
i'm trying to transform this website that students using it to get results...to a software,
sorry, the website is in french language, use google to translate the page
url: https://www2.inscription.tn/ORegMx/servlet/AuthentificationEtud?ident=cin
if you notice there's =cin, i still didn't learned php ,but, i think it can do something i don't know how to use java with http requests, so i did it this way but i need to know how to get the status code to know if it's 200 so the connection succeed and the inputs are correct and the user is connected and if another code so there's an error
...ANSWER
Answered 2019-Jan-19 at 22:11The WebDriver API does not provide access to the HTTP status. There is a lengthy post about the reasons and options to get this information at How to get HTTP Response Code using Selenium WebDriver
You can use the WebDriver API to inspect the result after your submit call. Look for meta tags and page elements unique to error pages at this website. With findElement calls you can ensure their existence within the result page.
In this particular case the server just seems to deliver the same form again. You can reuse your calls from above.
Within your result page of a valid login you can find a logout link by its class name "logout". If the webdriver cannot find that element, your login attempt failed.
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