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How to create and handle composite primary key in JPA
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You can make an Embedded class, which contains your two keys, and then have a reference to that class as EmbeddedId in your Entity.
You would need the @EmbeddedId and @Embeddable annotations.
@Entity
public class YourEntity {
@EmbeddedId
private MyKey myKey;
@Column(name ...
Turning live() into on() in jQuery
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The on documentation states (in bold ;)):
Event handlers are bound only to the currently selected elements; they must exist on the page at the time your code makes the call to .on().
Equivalent to .live() would be something like
$(document.body).on('change', 'select[nam...
Git diff between current branch and master but not including unmerged master commits
...How can I see what branch another branch was forked from?
Note that .. and ... syntax does not have the same semantics as in other Git tools. It differs from the meaning specified in man gitrevisions.
Quoting man git-diff:
git diff [--options] <commit> <commit> [--] [<path...
Difference between Rebuild and Clean + Build in Visual Studio
What is the difference between just a Rebuild and doing a Clean + Build in Visual Studio 2008? Is Clean + Build different then doing Clean + Rebuild ?
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How to declare a friend assembly?
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And it is damn irritating to see the MSDN documentation (msdn.microsoft.com/en-us/library/…) mention ridiculously short public key which almost look like public key token to me.
– Hemant
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Can I get the name of the current controller in the view?
... Guides, it says:
The params hash will always contain the :controller and :action keys, but you should use the methods controller_name and action_name instead to access these values
ActionController Parameters
So let's say you have a CSS class active , that should be inserted in any link who...
Rails has_and_belongs_to_many migration
I have two models restaurant and user that I want to perform a has_and_belongs_to_many relationship.
4 Answers
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What is the meaning of the term arena in relation to memory?
... arena , but never defines it. I've searched for the meaning of the word and how it relates to memory, and found nothing. Here are a few contexts in which the author uses the term:
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how to hide a vertical scroll bar when not needed
I have a textarea which is contained in a div as I have jquery hint and wanted to use opacity without changing the border.
There is a visible vertical scroll bar how I only want this displayed when I am typing in the text field and it goes beyond the container. I have tried overflow: auto; but does ...
How do I space out the child elements of a StackPanel?
...x:Key="tbMargin">0,10,0,0</Thickness>
</Window.Resources>
and then refer to this value in the inner scope
<StackPanel.Resources>
<Style TargetType="{x:Type TextBox}">
<Setter Property="Margin" Value="{StaticResource tbMargin}"/>
</Style>
<...