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PersistentObjectException: detached entity passed to persist thrown by JPA and Hibernate
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@Sam, thanks a lot for your explanation. But, I don't understand still. I see that without 'special' setter the bi-directional relationship is not satisified. But, I don't see why object was detached.
– Gilgamesz
Mar 14 '18 at 9:33
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Converting Stream to String and back…what are we missing?
...ary string to formatted bytes
formatted bytes to the original string
You do not have "formatted bytes". You have arbitrary bytes. You need to use something like a base-n (commonly: base-64) encode. This transfers
arbitrary bytes to a formatted string
a formatted string to the original bytes
lo...
How to capitalize the first letter in a String in Ruby
...Maria"
"мария".capitalize #=> мария
The problem is, it just doesn't do what you want it to, it outputs мария instead of Мария.
If you're using Rails there's an easy workaround:
"мария".mb_chars.capitalize.to_s # requires ActiveSupport::Multibyte
Otherwise, you'll ha...
Convert a PHP script into a stand-alone windows executable
...d line using PHP-CLI. Now I want to hand over this script to someone but I do not want to:
7 Answers
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Split long commands in multiple lines through Windows batch file
...plete line must not exceed the maximum line length of ~8192 characters (Windows XP, Windows Vista, and Windows 7).
echo Test1
echo one ^
two ^
three ^
four^
*
--- Output ---
Test1
one two three four*
echo Test2
echo one & echo two
--- Output ---
Test2
one
two
echo Test3
echo one & ^
ec...
GCD to perform task in main thread
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No, you do not need to check whether you’re already on the main thread. By dispatching the block to the main queue, you’re just scheduling the block to be executed serially on the main thread, which happens when the corresponding...
Refresh a page using PHP
How can I refresh a page using PHP periodically? If I can not do it by PHP, what is the best recommended scenario?
13 Answe...
Get Folder Size from Windows Command Line
Is it possible in Windows to get a folder's size from the command line without using any 3rd party tool?
17 Answers
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JOIN queries vs multiple queries
... For the most part, though, if you have the right indexes and you properly do your JOINs it is usually going to be faster to do 1 trip than several.
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How to programmatically set drawableLeft on Android button?
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You can use the setCompoundDrawables method to do this. See the example here. I used this without using the setBounds and it worked. You can try either way.
UPDATE: Copying the code here incase the link goes down
Drawable img = getContext().getResources().getDrawable(R....