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What is the difference between CascadeType.REMOVE and orphanRemoval in JPA?
... and remove the post entity:
Post post = entityManager.createQuery("""
select p
from Post p
join fetch p.comments
where p.id = :id
""", Post.class)
.setParameter("id", postId)
.getSingleResult();
entityManager.remove(post);
Hibernate is going to execute three delete statements:...
Path of assets in CSS files in Symfony 2
...css, b.css, c.css, etc: all identical, just changing the color and the CSS selector.
.a
{
background: red url('../images/devil.png');
}
The "directories" structure is:
Directories
All this came, because I did not want the individual original files exposed to the public, specially if I want...
multiprocessing: sharing a large read-only object between processes?
...rom many sources.
Reading from many named pipes is often done using the select module to see which pipes have pending input.
Solution 3
Shared lookup is the definition of a database.
Solution 3A – load a database. Let the workers process the data in the database.
Solution 3B – create...
Good MapReduce examples [closed]
...erations that you can do in MapReduce is the set of normal SQL operations: SELECT, SELECT WHERE, GROUP BY, ect.
Another good example is matrix multiply, where you pass one row of M and the entire vector x and compute one element of M * x.
...
Apply CSS styles to an element depending on its child elements
...but this isn't possible.
You may want to consider looking at jQuery. Its selectors work very well with 'containing' types. You can select the div, based on its child contents and then apply a CSS class to the parent all in one line.
If you use jQuery, something along the lines of this would may w...
Submitting HTML form using Jquery AJAX
...ral web actions GET, POST, PUT, and DELETE; these directly correspond with SELECT/Retreiving DATA, INSERTING DATA, UPDATING/UPSERTING DATA, and DELETING DATA. A default HTML/ASP.Net webform/PHP/Python or any other form action is to "submit" which is a POST action. Because of this the below will al...
Attach IntelliJ IDEA debugger to a running Java process
...ation:
Run -> Edit Configurations...
Click the "+" in the upper left
Select the "Remote" option in the left-most pane
Choose a name (I named mine "remote-debugging")
Click "OK" to save:
JVM Options
The configuration above provides three read-only fields. These are options that tell the JV...
How to display unique records from a has_many through relationship?
...r the SQL DISTINCT stmt (e.g. has_many :products, :through => :orders, :select => "DISTINCT products.*). In the first case, ALL records are fetched and rails removes the duplicates for you. In the later case, only non-duplicate records are fetched from the db so it might offer better performan...
How to become an OpenCart guru? [closed]
...n the theme folder. Should any template not be available for the currently selected theme, the default folder's template is used instead as a fallback. This means themes can be created with very few files and still function fully. It also reduces code duplication and issues as upgrades are made
U...
Set default syntax to different filetype in Sublime Text 2
...ax type in the lower right corner of the window. This will open the syntax selection menu with the option to Open all with current extension as... at the top of the menu.
Updated 2016-04-19: As of now, this also works for Sublime Text 3.
...