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JPA CascadeType.ALL does not delete orphans
... all child elements
delete main row
close session
With JPA 2.0, you can now use the option orphanRemoval = true
@OneToMany(mappedBy="foo", orphanRemoval=true)
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Java Reflection: How to get the name of a variable?
...s added to Java 8. Parameter (a special class of local variable) names are now available via reflection. Among other purposes, this can help to replace @ParameterName annotations used by dependency injection containers.
shar...
Connection pooling options with JDBC: DBCP vs C3P0
...a shelf, the Apache Commons folk have taken DBCP out of dormancy and it is now, once again, an actively developed project. Thus my original post may be out of date.
That being said, I haven't yet experienced this new upgraded library's performance, nor heard of it being de-facto in any recent app ...
C++ Build Systems - What to use? [closed]
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You can use Gradle now: https://docs.gradle.org/current/userguide/native_software.html
This seems to have matured quite a bit in the years since I originally posted this. The page saying that the project is "incubating" has disappeared, but I ...
How to Set AllowOverride all
I want to set the AllowOverride all But I don't know how to do it. I have found the following code by searching the google and pasted it in .htaccess :
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How do you render primitives as wireframes in OpenGL?
...RONT and GL_BACK have been deprecated and removed from OpenGL 3.1 and up. Now, you can still use them through the compatibility extension, but if you have a choice between forward-compatible and backward-compatible, I would recommend going for the former.
– fouric
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What's the best way to learn LISP? [closed]
I have been programming in Python, PHP, Java and C for a couple or years now, and I just finished reading Hackers and Painters, so I would love to give LISP a try!
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How can I create tests in Android Studio?
...yClass {
public int add(int a, int b) {
return a + b;
}
}
Now change the addition_isCorrect() method in the test class to be like the following code (or just add another method with a different name):
public class ExampleUnitTest {
@Test
public void addition_isCorrect() thro...
What is the best way to measure execution time of a function? [duplicate]
Obviously I can do and DateTime.Now.After - DateTime.Now.Before but there must be something more sophisticated.
4 Answ...
Do Facebook Oauth 2.0 Access Tokens Expire?
... I would like to inform you that fb has changed in his api & now no life time token is available,Now offline access will be active for 60 days.
– PrateekSaluja
Mar 28 '12 at 13:35
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