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No @XmlRootElement generated by JAXB
...nted at, the rules by which JAXB XJC decides whether or not to put the @XmlRootElement annotation on a generated class are non trivial (see this article).
@XmlRootElement exists because the JAXB runtime requires certain information in order to marshal/unmarshal a given object, specifically the XML ...
MongoDB - admin user not authorized
...ad around the same issue, and everything worked after I set the role to be root when adding the first admin user.
use admin
db.createUser(
{
user: 'admin',
pwd: 'password',
roles: [ { role: 'root', db: 'admin' } ]
}
);
exit;
If you have already created the admin user, you can chan...
Python logging not outputting anything
...default logging level is warning.
Since you haven't changed the level, the root logger's level is still warning.
That means that it will ignore any logging with a level that is lower than warning, including debug loggings.
This is explained in the tutorial:
import logging
logging.warning('Watch ou...
What is the difference between ApplicationContext and WebApplicationContext in Spring MVC?
...let Spring application are Web Application contexts, this goes both to the root webapp context and the servlet's app context.
Also, depending on web application context capabilities may make your application a little harder to test, and you may need to use MockServletContext class for testing.
Dif...
Problems with contenttypes when loading a fixture in Django
I am having trouble loading Django fixtures into my MySQL database because of contenttypes conflicts. First I tried dumping the data from only my app like this:
...
Webstorm: “Cannot Resolve Directory”
...
To make file references to a non-root folder in your project, you'll need to mark that directory as a Resource. To do this, go to Settings > Directories and select your asset root folder from the right-hand panel. Then mark it as Resource Root by clicking...
Finding duplicate values in a SQL table
...QL Server 2017) still requires all non-aggregated columns in the GROUP BY.
MySQL is unpredictable and you need sql_mode=only_full_group_by:
GROUP BY lname ORDER BY showing wrong results;
Which is the least expensive aggregate function in the absence of ANY() (see comments in accepted answer).
Ora...
How do you write multiline strings in Go?
...DanieleD That's a slight nonsequitur, but which dialect? Presumably mainly MySQL? stackoverflow.com/a/10574031 Note that by extension of the same argument, it's a pain for embedding markdown, or shell scripts (if you opt to use backtick in place of $(abcd)).
– Ivan Vučica
...
How do I get the different parts of a Flask request's url?
...ibutes would be the following:
path /page.html
script_root /myapplication
base_url http://www.example.com/myapplication/page.html
url http://www.example.com/myapplication/page.html?x=y
url_root http://www.example.com/myapplication/
...
Add a reference column migration in Rails 4
... Active Record only supports single column foreign keys and currently only mysql, mysql2 and PostgreSQL adapters are supported. Don't try this with other adapters like sqlite3, etc. Refer to Rails Guides: Foreign Keys for your reference.
...