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Understanding PrimeFaces process/update and JSF f:ajax execute/render attributes

...s attribute is server side and can only affect UIComponents implementing EditableValueHolder (input fields) or ActionSource (command fields). The process attribute tells JSF, using a space-separated list of client IDs, which components exactly must be processed through the entire JSF lifecycle upon ...
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How do you keep parents of floated elements from collapsing? [duplicate]

Although elements like <div> s normally grow to fit their contents, using the float property can cause a startling problem for CSS newbies: If floated elements have non-floated parent elements, the parent will collapse. ...
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MySQL: Transactions vs Locking Tables

I'm a bit confused with transactions vs locking tables to ensure database integrity and make sure a SELECT and UPDATE remain in sync and no other connection interferes with it. I need to: ...
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How to create empty text file from a batch file?

... Sometimes it's relevant; I used to have touch lying around until I got the idea of just copying NUL (or type NUL>file) for the purpose of getting 0-byte files. :-) – Joey Mar 4 '09 at 3:47 ...
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How to use a link to call JavaScript?

...gt; or <a onclick="jsfunction()" href="javascript:void(0);"> Edit: The above response is really not a good solution, having learned a lot about JS since I initially posted. See EndangeredMassa's answer below for the better approach to solving this problem. ...
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Java executors: how to be notified, without blocking, when a task completes?

Say I have a queue full of tasks which I need to submit to an executor service. I want them processed one at a time. The simplest way I can think of is to: ...
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Remove duplicate rows in MySQL

I have a table with the following fields: 25 Answers 25 ...
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Reintegrate can only be used if revisions X through Y were previously merged from to reintegra

Been using SVN branches with Tortoise 1.6. I've been periodically merging the trunk into the branch to keep it up to date. ...
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Where is Xcode's build folder?

... used to be created in the root folder of my project. I can no longer find it. 9 Answers ...
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Repeat a task with a time delay?

I have a variable in my code say it is "status". 12 Answers 12 ...