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Hibernate throws MultipleBagFetchException - cannot simultaneously fetch multiple bags
... the thing is, hibernate can't fetch the two collections with one query. So when you query for the parent entity, it will need 2 extra queries per result, which is normally something you don't want.
– Bozho
Jun 18 '12 at 11:19
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MongoDB relationships: embed or reference?
... records will refer to the same data it is more efficient and less error prone to update a single record and keep references to it in other places.
Document size considerations
MongoDB imposes a 4MB (16MB with 1.8) size limit on a single document. In a world of GB of data this sounds small, but it...
Can an abstract class have a constructor?
...his example, that generally abstract classes have default constructors if none have been explicitly declared
– Vic Seedoubleyew
Aug 11 '16 at 14:24
2
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Calculating arithmetic mean (one type of average) in Python
...-in or standard library method in Python to calculate the arithmetic mean (one type of average) of a list of numbers?
12 An...
What is meant by immutable?
...ns you can pass references to the object around, without worrying that someone else is going to change its contents. Especially when dealing with concurrency, there are no locking issues with objects that never change
e.g.
class Foo
{
private final String myvar;
public Foo(final String ...
Quick-and-dirty way to ensure only one instance of a shell script is running at a time
What's a quick-and-dirty way to make sure that only one instance of a shell script is running at a given time?
40 Answers
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How can you dynamically create variables via a while loop? [duplicate]
I want to create variables dynamically via a while loop in Python. Does anyone have any creative means of doing this?
8 Ans...
Understanding ibeacon distancing
...avid. Where does the txPower value come from? Is it a calibration value done on the client (receiving) side? Or is it a metric you can get from a beacon?
– rmooney
Jan 6 '14 at 19:06
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Android map v2 zoom to show all the markers
...setting map extent using addOnGlobalLayoutListener here.
Clarification 2
One comment notes that using this method for only one marker results in map zoom set to a "bizarre" zoom level (which I believe to be maximum zoom level available for given location). I think this is expected because:
The L...
Nearest neighbors in high-dimensional data?
...ps not the nearest neighbor); in doing so, you reduce complexity. You mentioned the kd-tree; that is one example. But as you said, kd-tree works poorly in high dimensions. In fact, all current indexing techniques (based on space partitioning) degrade to linear search for sufficiently high dimensions...