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What's the difference between @JoinColumn and mappedBy when using a JPA @OneToMany association
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The annotation @JoinColumn indicates that this entity is the owner of the relationship (that is: the corresponding table has a column with a foreign key to the referenced table), whereas the attribute mappedBy indicates that the entity in this...
Custom fonts and XML layouts (Android)
I'm trying to define a GUI layout using XML files in Android. As far as I can find out, there is no way to specify that your widgets should use a custom font (e.g. one you've placed in assets/font/) in XML files and you can only use the system installed fonts.
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Use JSTL forEach loop's varStatus as an ID
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The variable set by varStatus is a LoopTagStatus object, not an int. Use:
<div id="divIDNo${theCount.index}">
To clarify:
${theCount.index} starts counting at 0 unless you've set the begin attribute
${theCount.count} starts counting at 1
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How to Set focus to first text input in a bootstrap modal after shown
I load a dynamic bootstrap modal and it contains few text inputs. The issue i face that i want the cursor to focus on the first input in this modal, and this is not happening by default.
So i wrote this code to do it:
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Efficiently updating database using SQLAlchemy ORM
I'm starting a new application and looking at using an ORM -- in particular, SQLAlchemy.
6 Answers
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Email Address Validation in Android on EditText [duplicate]
How can we perform Email Validation on edittext in android ? I have gone through google & SO but I didn't find out a simple way to validate it.
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@RequestBody and @ResponseBody annotations in Spring
Can someone explain the @RequestBody and @ResponseBody annotations in Spring 3? What are they for? Any examples would be great.
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What's the difference between lists and tuples?
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Apart from tuples being immutable there is also a semantic distinction that should guide their usage. Tuples are heterogeneous data structures (i.e., their entries have different meanings), while lists are homogeneous sequences. Tuples have stru...
how to check redis instance version?
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This doesn't give you the currently running version though. I had upgraded a server to 3.2.8 via yum, and this command showed the new version, but the server needed to be restarted manually to launch the new version, whereas INFO correctly reported the old version....
How to remove all of the data in a table using Django
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Inside a manager:
def delete_everything(self):
Reporter.objects.all().delete()
def drop_table(self):
cursor = connection.cursor()
table_name = self.model._meta.db_table
sql = "DROP TABLE %s;" % (table_name, ...