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JPA CascadeType.ALL does not delete orphans
...eType.DELETE_ORPHAN, which can be used in conjunction with JPA CascadeType.ALL.
If you don't plan to use Hibernate, you'll have to explicitly first delete the child elements and then delete the main record to avoid any orphan records.
execution sequence
fetch main row to be deleted
fetch child...
Convert array to JSON
...y:
https://github.com/douglascrockford/JSON-js/blob/master/json2.js
And call:
var myJsonString = JSON.stringify(yourArray);
Note: The JSON object is now part of most modern web browsers (IE 8 & above). See caniuse for full listing. Credit goes to: @Spudley for his comment below
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Stopwatch vs. using System.DateTime.Now for timing events [duplicate]
...time by counting timer ticks in the underlying timer mechanism. If the installed hardware and operating system support a high-resolution performance counter, then the Stopwatch class uses that counter to measure elapsed time. Otherwise, the Stopwatch class uses the system timer to measure elapsed ti...
Can a div have multiple classes (Twitter Bootstrap) [duplicate]
...d you shouldn't use them together, or you'd get an unexpected result, basically what will happen is that the class with the highest specificity will be the one applied (or if they have the same then it'll be the one that's defined last on the CSS). So you better avoid doing stuff like this:
<p c...
How do I make an HTML button not reload the page
...ed the page reloads. Since I have some jQuery hide() functions that are called on page load, this causes these elements to be hidden again. How do I make the button do nothing, so I can still add some action that occurs when the button is clicked but not reload the page.
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How to kill an Android activity when leaving it so that it cannot be accessed from the back button?
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You just need to call finish()
Intent intent = new Intent(this, NextActivity.class);
startActivity(intent);
finish();
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How to localize ASP.NET MVC application?
...ial with recent update on How to localize asp.net mvc application covering all aspects including DisplayName localization, Validation, using Routing (storing culture name in URL), issues with output cache and so on... Alex Adamyan Blog - While my keyboard gently weeps
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How to force a WPF binding to refresh?
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if you use mvvm and your itemssource is located in your vm. just call INotifyPropertyChanged for your collection property when you want to refresh.
OnPropertyChanged("YourCollectionProperty");
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How to rotate portrait/landscape Android emulator? [duplicate]
... on mac: fn+control+F11 or fn+control+f12
– Fresheyeball
Jul 25 '12 at 23:58
5
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Convert List to List
...iterate over the list and cast the elements. This can be done using ConvertAll:
List<A> listOfA = new List<C>().ConvertAll(x => (A)x);
You could also use Linq:
List<A> listOfA = new List<C>().Cast<A>().ToList();
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