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Transaction marked as rollback only: How do I find the cause

I am having issues with committing a transaction within my @Transactional method: 8 Answers ...
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How to delete an SMS from the inbox in Android programmatically?

On Android phones SMS messages registered to applications also get sent to the device's inbox. However to prevent clutter, it'd be nice to be able to remove application specific SMS messages from the inbox to reduce the potential overflow of those messages. ...
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How do I check if a SQL Server text column is empty?

I am using SQL Server 2005. I have a table with a text column and I have many rows in the table where the value of this column is not null, but it is empty. Trying to compare against '' yields this response: ...
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Center a position:fixed element

I would like to make a position: fixed; popup box centered to the screen with a dynamic width and height. I used margin: 5% auto; for this. Without position: fixed; it centers fine horizontally, but not vertically. After adding position: fixed; , it's even not centering horizontally. ...
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How do I move files in node.js?

How can I move files (like mv command shell) on node.js? Is there any method for that or should I read a file, write to a new file and remove older file? ...
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How to implement Enums in Ruby?

What's the best way to implement the enum idiom in Ruby? I'm looking for something which I can use (almost) like the Java/C# enums. ...
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Control cannot fall through from one case label

I am trying to write a switch statement that would type the search term in the search field depending on whichever search textbox is present. I have the following code. But I am getting a "Control cannot fall through from one case label" error. ...
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How do I set environment variables from Java?

How do I set environment variables from Java? I see that I can do this for subprocesses using ProcessBuilder . I have several subprocesses to start, though, so I'd rather modify the current process's environment and let the subprocesses inherit it. ...
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How to add texture to fill colors in ggplot2

I'm currently using scale_brewer() for fill and these look beautiful in color (on screen and via color printer) but print relatively uniformly as greys when using a black and white printer. I searched the online ggplot2 documentation but didn't see anything about adding textures to fill colors. ...
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Best way to get InnerXml of an XElement?

What's the best way to get the contents of the mixed body element in the code below? The element might contain either XHTML or text, but I just want its contents in string form. The XmlElement type has the InnerXml property which is exactly what I'm after. ...