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JPA: How to have one-to-many relation of the same Entity type
...f 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 example. First, the entity class A:
@Entity
public class A implements Serializable {
@Id
@GeneratedValue(strategy=GenerationType.AUTO)
private Long id;
@ManyToOne
...
What exactly does the “u” do? “git push -u origin master” vs “git push origin master”
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10
@dahlbyk: Your answer is fine, but in your comments above you repeat a common misconception about git push - unless you set push.default yo...
Statistics: combinations in Python
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answered Jun 11 '10 at 18:29
Jouni K. SeppänenJouni K. Seppänen
33.9k55 gold badges6767 silver badges9696 bronze badges
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Removing leading zeroes from a field in a SQL statement
...ove the leading zeroes from a particular field, which is a simple VARCHAR(10) field. So, for example, if the field contains '00001A', the SELECT statement needs to return the data as '1A'.
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Creating hard and soft links using PowerShell
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– Cameron Oakenleaf
Sep 23 '17 at 5:10
2
@SergeVoloshenko It sure does. True, using New-Item does...
What's the 'Ruby way' to iterate over two arrays at once
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>> @budget = [ 100, 150, 25, 105 ]
=> [100, 150, 25, 105]
>> @actual = [ 120, 100, 50, 100 ]
=> [120, 100, 50, 100]
>> @budget.zip @actual
=> [[100, 120], [150, 100], [25, 50], [105, 100]]
>> @budget.zip(@actual...
how to convert binary string to decimal?
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Is this still relevant? parseInt(101, 2) returns 5.
– srph
Mar 17 '15 at 10:28
13
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Fatal Error: Allowed Memory Size of 134217728 Bytes Exhausted (CodeIgniter + XML-RPC)
...ectly acceptable imho.
– Pyrite
May 10 '14 at 18:52
24
@pyrite yes you are right that sometimes a...
Does const mean thread-safe in C++11?
...rue...
This is what the Standard Language has to say on thread-safety:
[1.10/4]
Two expression evaluations conflict if one of them modifies a memory location (1.7) and the other one accesses or modifies the same memory location.
[1.10/21]
The execution of a program contains a data race if it contai...
Rolling back local and remote git repository by 1 commit
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answered Jan 10 '11 at 13:32
VonCVonC
985k405405 gold badges33953395 silver badges39913991 bronze badges
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