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JPA: How to have one-to-many relation of the same Entity type
... 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
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Using Linq to group a list of objects into a new grouped list of list of objects
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answered Apr 23 '10 at 8:50
LeeLee
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How to make a variadic macro (variable number of arguments)
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answered Mar 25 '09 at 2:16
Alex BAlex B
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Mercurial (hg) commit only certain files
...Martin GeislerMartin Geisler
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Cross-platform way of getting temp directory in Python
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f = tempfile.TemporaryFile()
f.write('something on temporaryfile')
f.seek(0) # return to beginning of file
print f.read() # reads data back from the file
f.close() # temporary file is automatically deleted here
For completeness, here's how it searches for the temporary directory, according to the...
How does Spring autowire by name when more than one matching bean is found?
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This is documented in section 3.9.3 of the Spring 3.0 manual:
For a fallback match, the bean name is considered a default qualifier value.
In other words, the default behaviour is as though you'd added @Qualifier("country") to the setter method.
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Showing commits made directly to a branch, ignoring merges in Git
...shua Pinter
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answered Dec 15 '11 at 21:59
CB BaileyCB Bailey
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Unable to find a locale path to store translations for file __init__.py
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edited Jul 23 '19 at 15:50
andyw
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answered Jul 24...
What does Html.HiddenFor do?
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answered Oct 5 '10 at 18:43
Justin NiessnerJustin Niessner
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