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What is the proper way to re-attach detached objects in Hibernate?
I have a situation in which I need to re-attach detached objects to a hibernate session, although an object of the same identity MAY already exist in the session, which will cause errors.
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When should I use Lazy?
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You typically use it when you want to instantiate something the first time its actually used. This delays the cost of creating it till if/when it's needed instead of always incurring the cost.
Usually this is preferable when the object may or may not be used...
Where and how is the _ViewStart.cshtml layout file linked?
... the
\Views folder of your project:
The _ViewStart file can be used to define common view code that you
want to execute at the start of each View’s rendering. For example,
we could write code within our _ViewStart.cshtml file to
programmatically set the Layout property for each View ...
Creating a daemon in Linux
In Linux I want to add a daemon that cannot be stopped and which monitors filesystem changes.
If any changes are detected, it should write the path to the console where it was started plus a newline.
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Pass data to layout that are common to all pages
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If you are required to pass the same properties to each page, then creating a base viewmodel that is used by all your view models would be wise. Your layout page can then take this base model.
If there is logic required behind this data, then t...
How to create a windows service from java app
I've just inherited a java application that needs to be installed as a service on XP and vista. It's been about 8 years since I've used windows in any form and I've never had to create a service, let alone from something like a java app (I've got a jar for the app and a single dependency jar - log4j...
How to avoid “if” chains?
... This is both semantically correct (indeed, we want ALL conditions to be true) as well as a very good programming technique (short circuit evaluation). Furthermore, this can be used in any complex situation where creating functions would mess up the code.
– Sanchises
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JPA EntityManager: Why use persist() over merge()?
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Either way will add an entity to a PersistenceContext, the difference is in what you do with the entity afterwards.
Persist takes an entity instance, adds it to the context and makes that instance managed (ie future updates to the entity will be tracked...
How do I push amended commit to the remote Git repository?
...d a bit with my source code, I did my usual thing commit and then I pushed to a remote repository. But then I noticed I forgot to organize my imports in the source code. So I do the amend command to replace the previous commit:
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Copy a stream to avoid “stream has already been operated upon or closed”
I'd like to duplicate a Java 8 stream so that I can deal with it twice. I can collect as a list and get new streams from that;
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