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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'...
What makes a keychain item unique (in iOS)?
... class kSecClassGenericPassword, the primary key is the combination of
kSecAttrAccount and kSecAttrService.
For a keychain item of class kSecClassInternetPassword, the primary key is the combination of kSecAttrAccount, kSecAttrSecurityDomain, kSecAttrServer, kSecAttrProtocol, kSecAttrAuthentication...
Creating an index on a table variable
Can you create an index on a table variable in SQL Server 2000?
3 Answers
3
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Is Java Regex Thread Safe?
...ethod might not be. There have been two or three bugs over the years that caused compilation to fail in multithreaded environments. I would recommend doing the compilation in a synchronized block.
– Alan Moore
Sep 1 '09 at 7:00
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Is ASCII code 7-bit or 8-bit?
...acter coding scheme. But it is defined only for 0-127 codes which means it can be fit into 7-bits. So can't it be argued that ASCII bit is actually 7-bit code?
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What is the logic behind the “using” keyword in C++?
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In C++11, the using keyword when used for type alias is identical to typedef.
7.1.3.2
A typedef-name can also be introduced by an alias-declaration. The
identifier following the using keyword becomes a typedef-name and the
optional attribute-specifier-seq following the identifier apper...
How to prove that a problem is NP complete?
...lem with scheduling. I need to prove that the problem is NP complete. What can be the methods to prove it NP complete?
5 An...
How to create the branch from specific commit in different branch
...cording to your github repo).
If you want to start a new branch at the location you have just checked out, you can either run branch with no start point:
git branch test
or as other have answered, branch and checkout there in one operation:
git checkout -b test
I think that you might be co...
CMake output/build directory
... to CMake, and read a few tutorials on how to use it, and wrote some complicated 50 lines of CMake script in order to make a program for 3 different compilers. This probably concludes all my knowledge in CMake.
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Is there any way to put malicious code into a regular expression?
I want to add regular expression search capability to my public web page. Other than HTML encoding the output, do I need to do anything to guard against malicious user input?
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