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Spring Data: “delete by” is supported?
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Deprecated answer (Spring Data JPA <=1.6.x):
@Modifying annotation to the rescue. You will need to provide your custom SQL behaviour though.
public interface UserRepository extends JpaRepository<User, Long> {
@Modifying
@Query("delete from User u where u.firs...
Convert HttpPostedFileBase to byte[]
...am - but I'd avoid relying on all the data being available in a single go. If you're using .NET 4 this is simple:
MemoryStream target = new MemoryStream();
model.File.InputStream.CopyTo(target);
byte[] data = target.ToArray();
It's easy enough to write the equivalent of CopyTo in .NET 3.5 if you ...
Write bytes to file
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If I understand you correctly, this should do the trick. You'll need add using System.IO at the top of your file if you don't already have it.
public bool ByteArrayToFile(string fileName, byte[] byteArray)
{
try
{
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What is the difference between SqlCommand.CommandTimeout and SqlConnection.ConnectionTimeout?
Is there any difference between SqlCommand.CommandTimeout and SqlConnection.ConnectionTimeout in .NET?
6 Answers
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Bootstrap datepicker hide after selection
How do I hide the calendar after a date is selected? Is there a specific function that I can use? My code below:
18 Answer...
Bytes of a string in Java
In Java, if I have a String x , how can I calculate the number of bytes in that string?
8 Answers
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Why should I use document based database instead of relational database?
...bly you shouldn't :-)
The second most obvious answer is you should use it if your data isn't relational. This usually manifests itself in having no easy way to describe your data as a set of columns. A good example is a database where you actually store paper documents, e.g. by scanning office mail...
How do I install an R package from source?
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If you have the file locally, then use install.packages() and set the repos=NULL:
install.packages(path_to_file, repos = NULL, type="source")
Where path_to_file would represent the full path and file name:
On Windows i...
Difference between angle bracket < > and double quotes “ ” while including header files in C++? [dup
What is the difference between angle bracket < > and double quotes " " while including header files in C++?
2 Ans...
Display a tooltip over a button using Windows Forms
...ltip will automatically appear when the cursor hovers over the button, but if you need to display it programatically, call
MyToolTip.Show("Tooltip text goes here", MyButton)
in your code to show the tooltip, and MyToolTip.Hide(MyButton) to make it disappear again.
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