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What is the difference between an ORM and an ODM?
I am trying to figure out what the difference is between ORM and ODM, as far as I understand the concept, ORM (Object Relational Mapper) maps the relations between data, where as ODM (Object Document Mapper) deals with documents. Am I right in assuming that mySQL is an example of ORM and MongoDB is ...
Why is Hibernate Open Session in View considered a bad practice?
And what kind of alternative strategies do you use for avoiding LazyLoadExceptions?
9 Answers
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How to implement the activity stream in a social network
...e record.
The parent_id/parent_type are useful for my app - they tell me what the activity is related to. If a book was favorited, then parent_id/parent_type would tell me that the activity relates to a book (type) with a given primary key (id)
I index on (user_id, time) and query for activities...
What is the difference between compile code and executable code?
...) while "building" denominates the whole process of compiling, linking and whatever else needs to be done of an entire package or project.
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When is the finalize() method called in Java?
...rbage collector is not guaranteed to run at any specific time. In general, what I'm trying to say is finalize() is probably not the best method to use in general unless there's something specific you need it for.
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javascript: recursive anonymous function?
... (function() {
function recursive() {
if (timeToStop())
return whatever();
recursive(moreWork);
}
return recursive;
})());
What that does is define a function with a nice, safe, not-broken-in-IE function declaration statement, creating a local function whose name will not pollu...
Creating a singleton in Python
...ogger with Logger(), Python first asks the metaclass of Logger, Singleton, what to do, allowing instance creation to be pre-empted. This process is the same as Python asking a class what to do by calling __getattr__ when you reference one of it's attributes by doing myclass.attribute.
A metaclass es...
YAML mime type?
What is the most appropriate MIME type to use when sending data structured with YAML over HTTP?
6 Answers
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REST vs JSON-RPC? [closed]
...e endpoints + procedure arguments. It's impossible for client to determine what can be done next.
On the other hand in REST style it's very easy to guide clients by including control information in representations(HTTP headers + representation). For example:
It's possible (and actually mandatory...
How can I maintain fragment state when added to the back stack?
...t version of the documentation contradicts this claim. The flowchart says what you state, but the text in the main area of the page says onCreateView() is only called the first time the Fragment is displayed: developer.android.com/guide/components/fragments.html I'm fighting this issue now, and I ...