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JPA: How to have one-to-many relation of the same Entity type
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Yes, this is possible. This is a special case of the standard bidirectional @ManyToOne/@OneToMany relationship. It is special because the entity on each end of the relationship is the same. The general case is detailed in Section 2.10.2 of the JPA 2.0 spec.
Here's a worked exa...
What's the best method in ASP.NET to obtain the current domain?
...cation.
This checks for the default port instead.
Edit: Updated syntax and using Request.Url.Authority as suggested
$"{Request.Url.Scheme}{System.Uri.SchemeDelimiter}{Request.Url.Authority}"
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Long list of if statements in Java
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using Command pattern:
public interface Command {
void exec();
}
public class CommandA() implements Command {
void exec() {
// ...
}
}
// etc etc
then build a Map<String,Command> object and populat...
Find all files with name containing string
I have been searching for a command that will return files from the current directory which contain a string in the filename. I have seen locate and find commands that can find files beginning with something first_word* or ending with something *.jpg .
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Git flow release branches and tags - with or without “v” prefix
...reference, but I prefer the version with the v, as Semver does it that way and I try to follow that specification as close as possible to get a sane versioning.
It also makes filtering for those Tags easier, as you can press v and then the TAB-key for autocompletion: This will list all the tags (a...
Prevent multiple instances of a given app in .NET?
...way to prevent multiple instances of an app from running at the same time? And if there's no "best" technique, what are some of the caveats to consider with each solution?
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How to get hosting Activity from a view?
I have an Activity with 3 EditText s and a custom view which acts a specialised keyboard to add information into the EditText s.
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How to get current time with jQuery
...one in javascript is tricky (you have to calculate the offset between your and the desired time zone and modify the date accordingly). So as mentioned in another answer, using moment.js sounds like a good idea. momentjs.com
– Chris
May 4 '15 at 8:38
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Java dynamic array sizes?
...e it needs to grow in size. When it does you'll have to allocate a new one and copy the data from the old to the new:
int[] oldItems = new int[10];
for (int i = 0; i < 10; i++) {
oldItems[i] = i + 10;
}
int[] newItems = new int[20];
System.arraycopy(oldItems, 0, newItems, 0, 10);
oldItems = ...
How to get scrollbar position with Javascript?
...iew is. My guess is that I have to detect where the thumb on the track is, and then the height of the thumb as a percentage of the total height of the track. Am I over-complicating it, or does JavaScript offer an easier solution than that? Any ideas code-wise?
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