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• ResultSet and aggregation

  - by kachanov

  Ok, I admit my situation is special There is a data system that supports SQL-92 and JDBC interface However the SQL requets are pretty expensive, and in my application I need to retreive the same data multiple times and aggregate it ("group by") on different fields to show different dimensions of the same data. For example on one screen I have three tables that show the same set or records but aggregated by City (1st grid), by Population (2nd grid), by number of babies (3rd grid) This amounts to 3 SQL queries (which is very slow), UNLESS anyone of you can suggest any idea any library from apache commons or from google code, so that I can select all records into ResultSet and get 3 arrays of data group by different fields from this single ResultSet. Am I'm missing some obvious and unexpected solution to this problem?

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• Best Technologies for AJAX Web Development

  - by floatingfrisbee

  Hey Everyone, I have some experience in AJAX development, mostly on .NET and MooTools. However, I want to learn more and see what others out there thought about the various other options available. I am looking more for advise about the front end. The back end, I will most probably be coding up in .NET using c# and WCF services. Please feel free to provide me as much information as you can. Also I would appreciate any links to resources. List of Options (feel free to add) Write my own Javascript Use a frame work like MooTools, JQuery etc. Which one is better? Use Google Web Toolkit. Am I tying myself to limitations of GWT? Or are there not limitations? ASP.NET AJAX WPF (Will this run on non IE browsers?) Flash (it'll be a pain to learn action script) Thanks Jaspreet

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• C# Socket ReceiveAll

  - by rielz

  Hey there! I am trying to capture ip packets in c#. Everything is working fine, except that i only get outgoing packets. My Code: using (Socket sock = new Socket(AddressFamily.InterNetwork, SocketType.Raw, ProtocolType.IP)) { sock.Bind(new IPEndPoint(LOCALHOST, 0)); sock.SetSocketOption(SocketOptionLevel.IP, SocketOptionName.HeaderIncluded, true); sock.IOControl(IOControlCode.ReceiveAll, BitConverter.GetBytes(1), null); while (true) { byte[] buffer = new byte[sock.ReceiveBufferSize]; int count = sock.Receive(buffer); // ... } } Does anyone have an idea? :( Doesnt find any solutions at Google, ... Thank you in advance.

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• Ruby on Rails controller-view refactoring

  - by Dimitar Vouldjeff

  Hello, In my app I am using the ym4r-gm plugin, which allows you to play with the Google Maps API... I put the map "setup" in the controller: @map = GMap.new("div_map") @map.control_init(:large_map => true, :map_type => true) @map.center_zoom_init([47.0, 26.0], 7) ... And only render @map in the view. So my first question is whether I am using the right approach of "diving" this code? And the second question is: I have to models, which are rendering the same map (only the resources are different). Where should I put my refactored method that renders the map? In the application controller, maybe? Thanks in advance, I hope you will understand me!

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• Can you suggest good ways of generating URLS for viewing tagged content

  - by rikh

  For example, here on stack overflow the URL http://stackoverflow.com/questions/tagged/javascript+php will give you all questions tagged with javascript and php. The system I have allows tags with spaces in them, so the approach used here would not be a good fit for me. What character would you use to separate the tags, so the URLs are still human readable, google readable and web browser compatible. My gut feeling was to use commas. eg http://example.com/tagged/first+tag,second+tag Any feedback or suggestions would be welcome.

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• Turn Bluetooth On and Off in Andriod 1.5 (SDK level 3)?

  - by pcm2a

  There are tons of pay and free bluetooth toggles on the market that work with Android 1.5 (SDK level 3). The problem is there is no visible API for this! Does anyone have any working code snippits on how to enable and disable bluetooth that works on Android 1.5? I assume you must have to use some kind of reflection for it. There are some examples over on anddev.org, but they only work with Android 1.1 or lower. This is for Android 1.5 (SDK level 3) and not Android 2.0 or greater. In Android 2.0 or later Google added easy to use APIs.

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• JS dynamic img change and SEO

  - by Gusepo

  Hi all, I've built a web site using jquery to make nice transitions between content. The code works this way: there are 2 imgs (body and footer) when I click on a link (instead of going to another page) I fade out the 2 imgs and change the src attribute of the 2. When the new imgs are loaded I fade them back in. I'm using SWFaddress to allow user go directly to internal content. Now I'd like to make my content indexed by google and other Search engines, all the text content is inside the imgs, So I've got the text in ALT attribute. My question is: if a dinamically change the imgs ALT attribute using JS, will spiders be able to read it properly? consider that I'm using SWFaddress to create a sitemap.. Thanks

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• Creating a loading screen in HTML5

  - by espais

  I am having some issues finding a decent tutorial for generating a loading style screen with regards to HTML5. To be quite honest I'm not sure exactly where to begin... My project is essentially a simple HTML5 game, where I'll be loading in various sprite sheets and tilesets. They'll be reasonably small, but I'd like to show a little loading spinner instead of a blank screen while all the resources are loaded. Much appreciated if somebody could point me in the right direction, be it decent links or code samples to get me going...my Google-fu is lacking today! For clarification, I need to figure out how to load the resources themselves, as opposed to finding a spinner. For instance, how to calculate that X% has loaded.

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• How one can apply Hindi Matras(Vowels) on Roman letters?

  - by stacker

  How one can apply Hindi Matras(Vowels) on Roman letters? These Hindi Vowels work well on Roman letters on I-Phone by flipping Hindi and Roman keyboard. Is there any keyboard for this type of application? For Example: open facility ??? ???????? o?pn f??c?lt? ..........How one can Merge these dotted circles with Roman letters? This merging works on I-phone using Hindi/English keyboard. http://translate.google.com/#hi/en/open%20facility%0A%E0%A4%93%E0%A4%AA%E0%A4%A8%20%E0%A4%AB%E0%A5%88%E0%A4%B8%E0%A4%BF%E0%A4%B2%E0%A4%BF%E0%A4%9F%E0%A5%80%0Ao%E0%A5%8Bpn%20f%E0%A5%88%E0%A4%BFc%E0%A4%BFlt%E0%A5%80

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• How GPS works in iPhone ?

  - by Krishnan

  Hi Friends, I am using a iPhone 3g. I am in India(I got it in India). I just tried to check my location using the Google Maps. My location was spotted when I had sim in my phone. But when I took out the SIM from iPhone, I did not get my location. I tried the same with the Locate me Sample Application . So can someone explain how GPS works in iPhone, and how to fix my problem(to get my location when there is no SIM). Thanks and Regards, krishnan

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• iframe height not taken into account by IE8

  - by Pedro

  Hi guys, I'm building a dummy widget for a iGoogle/Netvibes like portal. This is a "Google Maps" widget, as it only renders a map centered on a specific location. The widget looks good in all browsers but IE8, in which the height I specify to the <div> that contains the map is not taken into account. Here's the interesting part of the code: <body onload="initialize()" > <div id="map_canvas" style="height:400px; width: 100%;"></div> </body> I have no control on the portal, so the only thing I can modify is the widget itself. I also tried to set the height for the <body>, but same thing. Any idea on why it's not working in IE? Thanks!

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• Posting to tumblr in PHP

  - by Sherif

  I am trying to make a test post to my tumblr blog with a php script (that will eventually be ran as a cron job) I have been browsing google and read many answers on here and the closest I found is explained in this post: Tumblr OAuth using PHP's OAuth class I am using the code in his tutorial here: http://vigrond.com/blog/2012/02/04/oauth-extension-php-and-the-tumblr-api/ Pretty much as is, replacing the blogurl with mine and of course the consumer and secret key. When I run the .php script via my browser however, nothing happens. Any ideas? EDIT: The only error I found in cPanel's error log is this: [Wed Oct 31 00:29:25 2012] [error] [client xx.xx.xx.xx ] PHP Warning: session_start() [function.session-start]: Cannot send session cache limiter - headers already sent (output started at /path on line 14 But I fixed this and the error does not appear anymore.

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• Dashboard pattern: HorizontalScrollView with pagination or ScrollView?

  - by Macarse

  I am starting a new application and I am willing to use the Dashboard pattern. For example: The Google IO app uses it: My issue is that the amount of buttons will be more than six. I'm not sure if I should use vertical or horizontal scrolling. Vertical scrolling could be done with a ScrollView or a GridView but I am not sure which would be the easier way to implement the horizontal version. I was thinking of using an HorizontalScrollView but it doesn't have pagination. It should feel similar to the tweetdeck app. How would you implement it?

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• Android: Using GEO uri

  - by Sebastian

  Hi, I have read the doc and some tutorials to get a .kml file working launching the google maps activity. When I hosted the file in a server, this works perfectly: Intent myIntent = new Intent( android.content.Intent.ACTION_VIEW, Uri.parse("geo:0,0?q=http://somedomain.com/file.kml") ); Now, reading this link on how to use intents for gmaps with the developing stage of GEO uri I can't manage how to load a kml file from within the device, I have tried with "q=file:///path-to-file.kml" and with an absolute path too. Has anyone done this yet? PS: in IRC channel recommend me to use apps based on openstreetmaps, but the docs is much more poor than the gmaps doc althought they are OS.

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• GWT on Python App Engine

  - by Koran

  Hi, I have a python app engine code (matured backend) - and we are now planning to have a front end for that code. I was wondering whether it is possible to implement GWT as the front end. Even though Alex Martelli in this post [1] mentions it is not possible, a comment to that post suggests that it is indeed possible using rpc over json for GWT. I was unable to understand how this is possible. In app.yaml file, we have to specify the language to be python, right? In that case, how can it compile GWT based on JAVA? Are there any examples on anyone doing that? Can someone help me out? It would be extremely helpful. [1]: http://stackoverflow.com/questions/1085898/choosing-java-vs-python-on-google-app-engine/1087878#1087878 link

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• Unicorn: Which number of worker processes to use?

  - by blackbird07

  I am running a Ruby on Rails app on a virtual Linux server that is capped at 1GB RAM. Currently, I am constantly hitting the limit and would like to optimize memory utilization. One option I am looking at is reducing the number of unicorn workers. So what is the best way to determine the number of unicorn workers to use? The current setting is 10 workers, but the maximum number of requests per second I have seen on Google Analytics Real-Time is 3 (only scored once at a peak time; in 99% of the time not going above 1 request per second). So is it a save assumption that I can - for now - go with 4 workers, leaving room for unexpected amounts of requests? What are the metrics I should have a look at for determining the number of workers and what are the tools I can use for that on my Ubuntu machine?

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• Why do firefox/chrome show a different page than IE8?

  - by Edward Tanguay

  When I look at this published Google Docs document, I see the latest version with Firefox and Chrome, but an older version with IE8. Also, screen-scraping it via PHP/Curl gives me an older version. I've tried CTRL-Refresh in IE8 but I can't get it to show me the newest version. No matter what headers I try to change in PHP/Curl, I can't get it to show me the newest version. What am I not understanding about browsers/headers/caching here? How can it be that different browsers show different contents of one page?

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• Sending http headers with python

  - by Niklas R

  I've set up a little script that should feed a client with html. import socket sock = socket.socket() sock.bind(('', 8080)) sock.listen(5) client, adress = sock.accept() print "Incoming:", adress print client.recv(1024) print client.send("Content-Type: text/html\n\n") client.send('<html><body></body></html>') print "Answering ..." print "Finished." import os os.system("pause") But it is shown as plain text in the browser. Can you please tell what I need to do ? I just can't find something in google that helps me.. Thanks.

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• Chronoscope with GWT - ChronoscopeBrowserInjector binding failed

  - by Gknee

  I want to use Timepedia Chronoscope (http://code.google.com/p/gwt-chronoscope/) in my GWT application. I have all the configuration like shown on chronoscope project site: chronoscope-1.0.jar in gwt-2.0.x applications: gwt-user-2.0.x and gwt-servlet-2.0.x chronoscope-api-1.0.jar gwtexporter-2.0.10.jar gin-1.0.jar I've inherited chornoscope module. I get the error from gwt plugin to eclipse that looks like that: java.lang.RuntimeException: Deferred binding failed for 'org.timepedia.chronoscope.client.browser.Chronoscope$ChronoscopeBrowserInjector' (did you forget to inherit a required module?) Can you help me?

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• Is there a name for the technique of using base-2 numbers to encode a list of unique options?

  - by Lunatik

  Apologies for the rather vague nature of this question, I've never been taught programming and Google is rather useless to a self-help guy like me in this case as the key words are pretty ambiguous. I am writing a couple of functions that encode and decode a list of options into a Long so they can easily be passed around the application, you know this kind of thing: 1 - Apple 2 - Orange 4 - Banana 8 - Plum etc. In this case the number 11 would represent Apple, Orange & Plum. I've got it working but I see this used all the time so assume there is a common name for the technique, and no doubt all sorts of best practice and clever algorithms that are at the moment just out of my reach.

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• PHP & AJAX SEO - For users with javascript and non javascript

  - by RussellHarrower

  So I understand this may come across as a open question, but I need away to solve this issue. I can either make the site do ajax request that load the body content, or I can have links that re-loads the whole page. I need the site to be SEO compliant, and I would really like the header to not re-load when the content changes, the reason is that we have a media player that plays live audio. Is there away that if Google BOT or someone without ajax enabled it does the site like normal href but if ajax or javascript allowed do it the ajax way.

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• How to get the LAN IP of a client using Java?

  - by Henrik

  How can i get the LAN IP-address of a computer using Java? I want the IP-address which is connected to the router and the rest of the network. I've tried something like this: Socket s = new Socket("www.google.com", 80); String ip = s.getLocalAddress().getHostAddress(); s.close(); This seem to work on some cases, but sometimes it returns the loopback-address or something completely different. Also, it requires internet connection. Does anyone got a more accurate method of doing this?

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• Cannot save model due to bad transaction? Django

  - by Kenneth Love

  Trying to save a model in Django admin and I keep getting the error: Transaction managed block ended with pending COMMIT/ROLLBACK I tried restarting both the Django (1.2) and PostgreSQL (8.4) processes but nothing changed. I added "autocommit": True to my database settings but that didn't change anything either. Everything that Google has turned up has either not been answered or the answer involved not having records in the users table, which I definitely have. The model does not have a custom save method and there are no pre/post save signals tied to it. Any ideas or anything else I can provide to make answering this easier?

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• Best PHP framework for jQuery?

  - by Radagaisus

  I've read all the answers on stackoverflow for similar questions but no one really laid down an explanation: why is zend/symfony/kohana/cakePHP the best for jQuery? what is the difference? I'm writing a snazzy ultra-cool web 2.0 app with google maps and facebook connect integration plus a bunch of other APIs. Almost everything will be AJAX vis JSON. For me PHP is a burden, an unnecessary evil. I need database control, almost always via JSON. I need user authentication. This is all. Nothing fancy. And I need it to scale. Most of all I need it to work effortlessly with jQuery, I need it to be jQuery's BFF, and I need to know why it is so. Thank you very much EDIT: The candidates right now are Yii, CodeIgniter and MongoDB.

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• Download a php-linked file in JavaScript

  - by fonix232

  I have a big problem. I've made a simple Google Chrome plugin (based on the old Youtube Video Downloader) but I have some problems with it. The first problem is that it won't pop up a new save window on click, but opens a new page with the video in the default Chrome player. The second is, that when the user clicks right click-save, they won't get the video name but a standardized name. Is there any way to make a file save dialog with a specified file save name?

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