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What to answer to a customer who asks which one of two equivalent technologies must be used?

- by MainMa

As a freelancer, I am often asked by my customers what they must choose between similar elements, neither of which being better than another. Examples: “Do I need my e-commerce website be in PHP or ASP.NET?” “Do I need to host this ordinary web service in Cloud or use an ordinary hosting service?” “Which one is better for my new website: MySQL or Oracle?” etc. There is maybe at most 1% of cases where the choice is relevant, and there is a real, objective reason to use one over another, based on the precise metrics and studies. In all other cases, it doesn't matter at all. It is totally, completely irrelevant, either because there are no implications¹, or because those implications are too small to be taken in account², or, finally, because it's impossible to predict those implications³. If you know one thing and not another one, the answer to those questions is easy: “You can either write the application in C# or Java, both being probably equivalent in your case. Note that I'm a C# developer, so if you choose Java, I would not be able to work on your project and you would need to find another freelancer.” When you know both technologies, you can't answer that. In this case, how to explain to the customer that the question he asks is subject to flamewar and has no real consequences on his project? In other words, how to explain that you've chosen to use one technology rather than an equivalent one for the reasons related to human resources, without giving the impression to be unprofessional or to not care about the project? ¹ Example: Is MySQL better (worse?), performance-wise, compared to Oracle, for a personal website which will be accessed by, oh, let's be optimistic, two people per day? ² Example: for a given project, I was asked to asset if Windows Azure hosting would be cheaper than the hosting of the same application on a well-known ASP.NET hosting provider. The cost revealed to be exactly the same. ³ Example: your customer have an idea of a future application (the idea itself being extremely vague). There is no business plan, no requirements, nothing at all. Just an idea. You are asked if Java is better than C# for this app. What do you answer?

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Generate MERGE statements from a table

- by Bill Graziano

We have a requirement to build a test environment where certain tables get reset from production every night. These are mainly lookup tables. I played around with all kinds of fancy solutions and finally settled on a series of MERGE statements. And being lazy I didn’t want to write them myself. The stored procedure below will generate a MERGE statement for the table you pass it. If you have identity values it populates those properly. You need to have primary keys on the table for the joins to be generated properly. The only thing hard coded is the source database. You’ll need to update that for your environment. We actually used a linked server in our situation. CREATE PROC dba_GenerateMergeStatement (@table NVARCHAR(128) )ASset nocount on; declare @return int;PRINT '-- ' + @table + ' -------------------------------------------------------------'--PRINT 'SET NOCOUNT ON;--'-- Set the identity insert on for tables with identitiesselect @return = objectproperty(object_id(@table), 'TableHasIdentity')if @return = 1 PRINT 'SET IDENTITY_INSERT [dbo].[' + @table + '] ON; 'declare @sql varchar(max) = ''declare @list varchar(max) = '';SELECT @list = @list + [name] +', 'from sys.columnswhere object_id = object_id(@table)SELECT @list = @list + [name] +', 'from sys.columnswhere object_id = object_id(@table)SELECT @list = @list + 's.' + [name] +', 'from sys.columnswhere object_id = object_id(@table)-- --------------------------------------------------------------------------------PRINT 'MERGE [dbo].[' + @table + '] AS t'PRINT 'USING (SELECT * FROM [source_database].[dbo].[' + @table + ']) as s'-- Get the join columns ----------------------------------------------------------SET @list = ''select @list = @list + 't.[' + c.COLUMN_NAME + '] = s.[' + c.COLUMN_NAME + '] AND 'from INFORMATION_SCHEMA.TABLE_CONSTRAINTS pk , INFORMATION_SCHEMA.KEY_COLUMN_USAGE cwhere pk.TABLE_NAME = @tableand CONSTRAINT_TYPE = 'PRIMARY KEY'and c.TABLE_NAME = pk.TABLE_NAMEand c.CONSTRAINT_NAME = pk.CONSTRAINT_NAMESELECT @list = LEFT(@list, LEN(@list) -3)PRINT 'ON ( ' + @list + ')'-- WHEN MATCHED ------------------------------------------------------------------PRINT 'WHEN MATCHED THEN UPDATE SET'SELECT @list = '';SELECT @list = @list + ' [' + [name] + '] = s.[' + [name] +'],'from sys.columnswhere object_id = object_id(@table)-- don't update primary keysand [name] NOT IN (SELECT [column_name] from INFORMATION_SCHEMA.TABLE_CONSTRAINTS pk , INFORMATION_SCHEMA.KEY_COLUMN_USAGE c where pk.TABLE_NAME = @table and CONSTRAINT_TYPE = 'PRIMARY KEY' and c.TABLE_NAME = pk.TABLE_NAME and c.CONSTRAINT_NAME = pk.CONSTRAINT_NAME)-- and don't update identity columnsand columnproperty(object_id(@table), [name], 'IsIdentity ') = 0 --print @list PRINT left(@list, len(@list) -3 )-- WHEN NOT MATCHED BY TARGET ------------------------------------------------PRINT ' WHEN NOT MATCHED BY TARGET THEN';-- Get the insert listSET @list = ''SELECT @list = @list + '[' + [name] +'], 'from sys.columnswhere object_id = object_id(@table)SELECT @list = LEFT(@list, LEN(@list) - 1)PRINT ' INSERT(' + @list + ')'-- get the values listSET @list = ''SELECT @list = @list + 's.[' +[name] +'], 'from sys.columnswhere object_id = object_id(@table)SELECT @list = LEFT(@list, LEN(@list) - 1)PRINT ' VALUES(' + @list + ')'-- WHEN NOT MATCHED BY SOURCEprint 'WHEN NOT MATCHED BY SOURCE THEN DELETE; 'PRINT ''PRINT 'PRINT ''' + @table + ': '' + CAST(@@ROWCOUNT AS VARCHAR(100));';PRINT ''-- Set the identity insert OFF for tables with identitiesselect @return = objectproperty(object_id(@table), 'TableHasIdentity')if @return = 1 PRINT 'SET IDENTITY_INSERT [dbo].[' + @table + '] OFF; 'PRINT ''PRINT 'GO'PRINT '';

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Taking a Chomp out of a (Social Network) Product Hype

- by kellsey.ruppel

Andrew Kershaw, Senior Director Oracle Social Network Product Development, speaks about Oracle Social Network One of our competitors is being very aggressive with its own developed Social Network add-on, but there should be no doubt in the minds that the Oracle social capabilities available with Fusion CRM stack up well against it. Within the Oracle Cloud, we have announced a product called Oracle Social Network. That technology is pre-integrated into Fusion Applications, enabling your customer to build a collaborative and social enterprise (without all the noise!). Oracle Social Network is designed together with our Fusion Applications. It is very conveniently pre-integrated with CRM, HCM, Financials, Projects, Supply Chain, and the Fusion family. But what's even better is that the individual teams can take a considered approach to what they are trying to achieve within the collaboration process and the outcome they are trying to enable. Then they can utilize the network and collaboration tools to support that result. And there's more! The Fusion teams can design social interactions that bridge across and outside their individual product lines because we have more than just a product line and they know they have the social network to connect them. I know we have a superior product, but it is our ability to understand and execute across the enterprise that will enable us to deliver a much more robust and capable platform in the short term than our competitor can. We have built a product specifically designed for enterprise social collaboration which is not the same for the competition. We have delivered a much more effective solution - one in which individuals can easily collaborate to get results, while being confident that they know who has access to their information. Our platform has been pre-built to cross the company boundaries and enable our customers to collaborate, not just with their customers, but with their partners and suppliers as well. So Fusion addresses the combination of the enterprise application suite with enterprise collaboration and social networking. Oracle Social Network already has a feature function advantage over our competitor's tool providing a real added value to the employees. Plus Oracle has the ability to execute in a broad enterprise and cross-enterprise way that our competitors cannot. We have the power of a tool that provides the core social fabric across all of the applications, as well as supporting enterprise collaboration. That allows us to provide intelligent business insight, connections, and recommendations that our competitor simply can't. From our competitors, customers get integration for Sales; they get integration for Service, but then they have to integrate every other enterprise asset that they have by themselves. With Oracle, we are doing the integration. Fusion Applications will be pre-integrated, and over time, all of the applications in the business suite, including our Applications Unlimited and specialist industry applications, will connect to the Oracle Social Network. I'm confident these capabilities make Oracle Social Network the only collaboration platform on which to deliver the social enterprise.

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Can I upgrade the CPU in my Lenovo 3000 N100 laptop?

- by Pavel

I've got an Intel Core Duo T2300 in my laptop (Lenovo 3000 N100, 0768-49G). Here is what I could find out about it: $ sudo dmidecode # dmidecode 2.11 SMBIOS 2.4 present. 42 structures occupying 1436 bytes. Table at 0x000DC010. Handle 0x0000, DMI type 0, 24 bytes BIOS Information Vendor: LENOVO Version: 61ET37WW Release Date: 06/04/07 Address: 0xE6B70 [...] Handle 0x0002, DMI type 2, 8 bytes Base Board Information Manufacturer: LENOVO Product Name: CAPELL VALLEY(NAPA) CRB [...] Handle 0x0004, DMI type 4, 35 bytes Processor Information Socket Designation: U2E1 Type: Central Processor Family: Other Manufacturer: Intel ID: E8 06 00 00 FF FB E9 BF Version: Genuine Intel(R) CPU T2300 @ 1.66GHz Voltage: 3.3 V External Clock: 166 MHz Max Speed: 2048 MHz Current Speed: 1600 MHz Status: Populated, Enabled Upgrade: ZIF Socket L1 Cache Handle: 0x0005 L2 Cache Handle: 0x0006 L3 Cache Handle: Not Provided Serial Number: Not Specified Asset Tag: Not Specified Part Number: Not Specified $ cat /proc/cpuinfo processor : 0 vendor_id : GenuineIntel cpu family : 6 model : 14 model name : Genuine Intel(R) CPU T2300 @ 1.66GHz stepping : 8 microcode : 0x39 cpu MHz : 1000.000 cache size : 2048 KB I believe the chipset is "Mobile Intel 945GM Express", but I don't know how to verify it on a Linux system. I'm not sure about the socket, but Intel claims "Sockets Supported: PBGA479, PPGA478". Now, I'd like to upgrade to the fastest compatible CPU available, but I'm a bit lost in all the details. Can you guys help me out with a couple of questions, please? What CPUs can I choose from? (I think it's only the Core2Duo line, but it should be enough for an upgrade) Can I use a 64-bit CPU? Can I use a CPU with a higher FSB than 667 MHz? Do I have to worry about additional cooling, or is it enough to check for similar voltage/TDP values? Thank you!

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Ubuntu 12.04 - Pound Reverse Proxy and Adobe Flex/Flash Auth

- by James

First time posting, I have a completely fresh install of ubuntu 12.04 Client as a reverse proxy gateway to our internal network. Our setup is we have one external ip but three domains we would like to point to various webservers on our internal network. It's not so much a load balancing issue or cacheing etc. Merely routing some Client browsers to a port 80 webpage (to adhere to some stricter corporate policies regarding placing port numbers after domain names). I have gone with pound and everything seems to be working fine. Static pages load etc. Everything is good with the exception of a Flash/Flex based WebClient for a Digital Asset Management program. The actual static page loads fine, it is just at the moment of entering credentials, be they correct or incorrect, and hitting login, there is no response whatsoever. Either a rejection or confirmation etc. So the request back to the internal server can't be getting through. I have googled extensively and there might be a solution in a crossdomain.xml file? Documentation isn't very clear. And we are not the authors of the DAM app, and have no control over the code on the Flash/Flex side. Questions: Is there a particular config file/solution for pound that allows Flash/Flex auth information to be forwarded? Is there another reverse proxy program (nginx?)that allows this type of config? Am I looking at this the entire wrong way, should Flash/Flex fundamentally not be allowed to have this access?

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Static file serving only works if root is a subfolder under public

- by lulalala

I am trying to serve static cache files using nginx. There are index.html files under the rails_root/public/cache directory. I tried the following configuration first, which doesn't work: root <%= current_path %>/public; # $uri always contains one slash(the first slash but not the last) try_files /cache$uri/index.html /cache$uri.html @rails; This give error: [error] 4056#0: *13503414 directory index of "(...)current/public/" is forbidden, request: "GET / HTTP/1.1" I then tried root <%= current_path %>/public/cache; # $uri always contains one slash(the first slash but not the last) try_files $uri/index.html $uri.html @rails; And to my surprise this works. Why is it that I can do the latter not the former( since they point to the same location) The permissions of the folders are: 775 public 755 cache 644 index.html The thing is that my favicon sitting under public/ is served correctly: # asset server server { listen 80; server_name assets.<%= server_name %>; expires max; add_header Cache-Control public; charset utf-8; root <%= current_path %>/public; }

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Outlook error-'Can't open e-mail folders.You must connect to Exchange w/ current profile before you can sync folders w/ your Outlook data file'

- by Emilio

Note that the error message I put in the title of this question is abbreviated. The actual error message is below. I have an Exchange account and using Outlook 2010 as the client. I run in Cached Exchange Mode and have an .OST file locally. Recently I uninstalled and reinstalled office. I set up a new mail profile when prompted by Outlook 2010 upon first execution of the program. In my initial attempt, I pointed the data file at my existing OST file. In my second attempt, I had Outlook create a fresh empty file. In both cases I'm getting the error 'Cannot open your default e-mail folders. You must connect to Microsoft Exchange with the current profile before you can synchronize your folders with your Outlook data file (.ost).', also shown in this screenshot -- http://drop.io/4rc9v9o/asset/outlook-error-png. I don't know how to connect with the current profile - that's what I thought I did when I created a new .OST file? I've had this problem for several days so my OST file is now out of date. Once I get things running I obviously want my active mailbox to update the OST, not the other way around.

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Managing per-user rc.d init scripts

- by Steve Schnepp

I want to delegate SysV init scripts to each user. Like the SysV init, each item in ${HOME}/rc.d starting with S will be launched on server start-up with the start argument. The same for the server shut-down with the one starting with K and with the stop argument. I thought about scripting it myself, but maybe there is already some kind of implementation out there1. In summary it would be a script in /etc/init.d/ that iterates through all the users and launches runparts as the user on the relevant scripts. The platform here is a Linux (Debian flavour), but I think the solution would be quite portable among various Unix-like platforms. Update: The point here is for users to be able to create their own init scripts that should be launch on their behalf when the system boots up. As Dan Carley pointed out, the services won't be able to access any system asset (priviledged ports, system logs, ...). 1. This way I don't have to think that much about all the subtle security implications such as script timeouts for example...

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Nginx and Gunicorn hanging on GET requests

- by whatWhat

I'm using Nginx + Gunicorn which is serving my Django project. All GET requests hang for ~1 min. The content seems to be available immediately as I can see it in the Browser inspector but the browser itself looks like it's still waiting for more data. Heres my Ngnix config #allow for up to 3 connections per second. limit_req_zone $binary_remote_addr zone=one:10m rate=3r/s; server { listen 80; server_name example.com; root /var/www/example.com/example/; # serve directly - analogous for static/staticfiles location /media/ { # this changes depending on your python version root /home/example/; } location /static/ { # if asset versioning is used if ($query_string) { expires max; } root /var/www/example.com; } location / { #Allow for a burst of 50. limit_req zone=one burst=50 nodelay; proxy_pass_header Server; proxy_set_header Host $http_host; proxy_redirect off; proxy_set_header X-Real-IP $remote_addr; proxy_set_header X-Scheme $scheme; proxy_connect_timeout 10; proxy_read_timeout 10; proxy_pass http://localhost:8001/; } # what to serve if upstream is not available or crashes error_page 500 502 503 504 /media/50x.html; } My Gunicorn Config: bind = "127.0.0.1:8001" workers = 3 worker_class = "gevent" Is there anything obvious that would be causing the requests to stay open for so long?

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Enterprise level Ticketing and inventory system reccomendations [closed]

- by TrackingSystem

My company is sort off at a stand still when it comes to our technician ticketing and inventory system. We currently use Numara TrackIt! - which isn't cutting it to say the least. Dell recommended KACE, but it's web based which is what we would like to avoid. We need a good ticketing and inventory system with the following: Server/Client setup Client supports XP/Windows 7 Ent. Web Based as well as Client is a plus Technician ticketing Active Directory integration Inventory System (Asset tag tracking etc/PO tracking) Exchange integrated - when tickets are made you have an option to send to the requester. Something that will scale well Please, if anyone is a Systems Admin or has knowledge regarding use of a great ticketing system please let me know. We have a large international corporation - price honestly isn't an issue. Keep in mind this will be mainly used for technicians to create tickets, enter inventory(track PCS) and possible even an option to track purchase orders. We want an enterprise level ticketing system with these capabilities please help! Thank you.

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Js (+Mootools) - Why my script use over 60% of processor?

- by Misiur

On this site - LINK - i need to use 3 banner scrollers (2x vertical + 1x horizontal). I've tried to do it in flash, but then everyone web browsers shut down, or suspended. Now i want to do it in JS (i use mootools). All data come from MySQL. Here's the complete code (even if you don't know mootools, You should understand it) global $wpdb; $table = $wpdb->prefix.'part'; $sql = "SELECT * FROM $table"; $q = $wpdb->get_results($sql); $g = 0; if($wpdb->num_rows > 0) { ?> <script type="text/javascript"> window.addEvent('load', function(){ var totall = 0; var totalr = 0; $$('#leftCont0 .contElement').each(function(el){ var img = new Asset.image(el.getFirst('a').getFirst('img').get('src')); totall += img.height; }); $$('#rightCont0 .contElement').each(function(el){ var img = new Asset.image(el.getFirst('a').getFirst('img').get('src')); totalr += img.height; }); $$('.leftCont').each(function(el){ var h = parseInt(el.get('id').substr(8)); el.setStyle('top', h * totall); }); $$('.rightCont').each(function(el){ var h = parseInt(el.get('id').substr(9)); el.setStyle('top', h * totalr); }); var total = new Array(totall, totalr); move.periodical(30, null, total); }); function move(num, num2) { var h = 0; var da = false; var target = null; $$('.leftCont').each(function(el){ var act = el.getStyle('top'); var n = parseInt(act)+1; el.setStyle('top', n+"px"); if(el.getStyle('top') < h) { h = parseInt(el.getStyle('top')); alert(h); } if(parseInt(el.getStyle('top')) > 400) { da = true; target = el; } }); if(da) { var n = h - num; target.setStyle('top', n+'px'); } h = 0; da = false; $$('.rightCont').each(function(el){ var act = el.getStyle('top'); var n = parseInt(act)+1; el.setStyle('top', n+"px"); if(el.getStyle('top') < h) { h = parseInt(el.getStyle('top')); alert(h); } if(parseInt(el.getStyle('top')) > 400) { da = true; target = el; } }); if(da) { var n = h - num2; target.setStyle('top', n+'px'); } } </script> <?php $g = 0; $l = 0; $r = 0; $leftContent = array(); $rightContent = array(); $leftHeight = 0; $rightHeight = 0; foreach($q as $q) { if(($g % 2) == 0) { $leftContent[$l] = '<div class="contElement"> <a href="'.$q->aurl.'"><img src="'.$q->imgurl.'" alt="Partner" /></a> </div>'; $lHeight = getimagesize($q->imgurl); $leftHeight .= $lHeight[1]; $l++; } else { $rightContent[$r] = '<div class="contElement"> <a href="'.$q->aurl.'"><img src="'.$q->imgurl.'" alt="Partner" /></a> </div>'; $rHeight = getimagesize($q->imgurl); $rightHeight .= $rHeight[1]; $r++; } $g++; } $quantity = ceil(400 / $leftHeight) + 1; for($i = 0; $i < $quantity; $i++) { $str = ""; for($j = 0; $j < sizeof($leftContent); $j++) { $str .= $leftContent[$j]; } $leftContainer[$i] = '<div class="leftCont" id="leftCont'.$i.'">'.$str.'</div>'; } $quantity = ceil(400 / $rightHeight) + 1; for($i = 0; $i < $quantity; $i++) { $str = ""; for($j = 0; $j < sizeof($rightContent); $j++) { $str .= $rightContent[$j]; } $rightContainer[$i] = '<div class="rightCont" id="rightCont'.$i.'">'.$str.'</div>'; } ?> <div id="pcl"> <?php for($i = 0; $i < sizeof($leftContainer); $i++) { echo $leftContainer[$i]; } ?> </div> <div id="pcr"> <?php for($i = 0; $i < sizeof($rightContainer); $i++) { echo $rightContainer[$i]; } ?> </div> <?php }

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Caching with AVPlayer and AVAssetExportSession

- by tba

I would like to cache progressive-download videos using AVPlayer. How can I save an AVPlayer's item to disk? I'm trying to use AVAssetExportSession on the player's currentItem (which is fully loaded). This code is giving me "AVAssetExportSessionStatusFailed (The operation could not be completed)" : AVAsset *mediaAsset = self.player.currentItem.asset; AVAssetExportSession *es = [[AVAssetExportSession alloc] initWithAsset:mediaAsset presetName:AVAssetExportPresetLowQuality]; NSString *outPath = [NSTemporaryDirectory() stringByAppendingPathComponent:@"out.mp4"]; NSFileManager *fileManager = [NSFileManager defaultManager]; [fileManager removeItemAtPath:outPath error:NULL]; es.outputFileType = @"com.apple.quicktime-movie"; es.outputURL = [[[NSURL alloc] initFileURLWithPath:outPath] autorelease]; NSLog(@"exporting to %@",outPath); [es exportAsynchronouslyWithCompletionHandler:^{ NSString *status = @""; if( es.status == AVAssetExportSessionStatusUnknown ) status = @"AVAssetExportSessionStatusUnknown"; else if( es.status == AVAssetExportSessionStatusWaiting ) status = @"AVAssetExportSessionStatusWaiting"; else if( es.status == AVAssetExportSessionStatusExporting ) status = @"AVAssetExportSessionStatusExporting"; else if( es.status == AVAssetExportSessionStatusCompleted ) status = @"AVAssetExportSessionStatusCompleted"; else if( es.status == AVAssetExportSessionStatusFailed ) status = @"AVAssetExportSessionStatusFailed"; else if( es.status == AVAssetExportSessionStatusCancelled ) status = @"AVAssetExportSessionStatusCancelled"; NSLog(@"done exporting to %@ status %d = %@ (%@)",outPath,es.status, status,[[es error] localizedDescription]); }]; How can I export successfully? I'm looking into copying mediaAsset into an AVMutableComposition, but haven't had much luck with that either. Thanks! PS: Here are some questions from people trying to accomplish the same thing (but with MPMoviePlayerController): Cache Progressive downloaded content in MPMoviePlayerController Simultaneously stream and save a video? Caching videos to disk after successful preload by MPMoviePlayerController

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Fluent NHibernate is bringing ClassMap Id and SubClassMap Id to referenced table?

- by Andy

HI, I have the following entities I'm trying to map: public class Product { public int ProductId { get; private set; } public string Name { get; set; } } public class SpecialProduct : Product { public ICollection<Option> Options { get; private set; } } public class Option { public int OptionId { get; private set; } } And the following mappings: public class ProductMap : ClassMap<Product> { public ProductMap() { Id( x => x.ProductId ); Map( x => x.Name ); } public class SpecialProductMap : SubclassMap<SpecialProduct> { public SpecialProductMap() { Extends<ProductMap>(); HasMany( p => p.Options ).AsSet().Cascade.SaveUpdate(); } } public class OptionMap : ClassMap<Option> { public OptionMap() { Id( x => x.OptionId ); } } The problem is that my tables end up like this: Product -------- ProductId Name SpecialProduct -------------- ProductId Option ------------ OptionId ProductId // This is wrong SpecialProductId // This is wrong There should only be the one ProductId and single reference to the SpecialProduct table, but we get "both" Ids and two references to SpecialProduct.ProductId. Any ideas? Thanks Andy

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AVFoundation: Video to OpenGL texture working - How to play and sync audio?

- by j00hi

I've managed to load a video-track of a movie frame by frame into a OpenGL texture with AVFoundation. I followed the steps described in the answer here: iOS4: how do I use video file as an OpenGL texture? and took some code from the GLVideoFrame sample from WWDC2010 which can be downloaded here: http://bit.ly/cEf0rM How do I play the audio-track of the movie synchronously to the video. I think it would not be a good idea to play it in a separate player, but to use the audio-track of the same AVAsset. AVAssetTrack* audioTrack = [[asset tracksWithMediaType:AVMediaTypeAudio] objectAtIndex:0]; I retrieve a videoframe and it's timestamp in the CADisplayLink-callback via CMSampleBufferRef sampleBuffer = [self.readerOutput copyNextSampleBuffer]; CMTime timestamp = CMSampleBufferGetPresentationTimeStamp( sampleBuffer ); where readerOutput is of type AVAssetReaderTrackOutput* How to get the corresponding audio-samples? And how to play them? Edit: I've looked around a bit and I think, best would be to use AudioQueue from the AudioToolbox.framework using the approach described here: AVAssetReader and Audio Queue streaming problem There is also an audio-player in the AVFoundation: AVAudioPlayer. But I don't know exactly how I should pass data to it's initWithData-initializer which expects NSData. Furthermore I don't think it's the best choice for my case because a new AVAudioPlayer-instance would have to be created for every new chunk of audio samples, as I understand it. Any other suggestions? What's the best way to play the raw audio samples which i get from the AVAssetReaderTrackOutput?

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Seems doctrine listener is not fired

- by Roel Veldhuizen

Got a service which should be executed the moment an object is persisted. Though, I think the code looks like it should work, it doesn't. I configured the service like the following yml. services: bla_orm.listener: class: Bla\OrmBundle\EventListener\UserManager arguments: [@security.encoder_factory] tags: - { name: doctrine.event_listener, event: prePersist } The class: namespace Bla\OrmBundle\EventListener; use Doctrine\ORM\Event\LifecycleEventArgs; use Bla\OrmBundle\Entity\User; class UserManager { protected $encoderFactory; public function __construct(\Symfony\Component\Security\Core\Encoder\EncoderFactoryInterface $encoderFactory) { $this->encoderFactory = $encoderFactory; } public function prePersist(LifecycleEventArgs $args) { $entity = $args->getEntity(); if ($entity instanceof User) { $encoder = $this->encoderFactory ->getEncoder($entity); $entity->setSalt(rand(10000, 99999)); $password = $encoder->encodePassword($entity->getPassword(), $entity->getSalt()); $entity->setPassword($password); } } } Symfony version: Symfony version 2.3.3 - app/dev/debug Output of container:debug [container] Public services Service Id Scope Class Name annotation_reader container Doctrine\Common\Annotations\FileCacheReader assetic.asset_manager container Assetic\Factory\LazyAssetManager assetic.controller prototype Symfony\Bundle\AsseticBundle\Controller\AsseticController assetic.filter.cssrewrite container Assetic\Filter\CssRewriteFilter assetic.filter_manager container Symfony\Bundle\AsseticBundle\FilterManager assetic.request_listener container Symfony\Bundle\AsseticBundle\EventListener\RequestListener cache_clearer container Symfony\Component\HttpKernel\CacheClearer\ChainCacheClearer cache_warmer container Symfony\Component\HttpKernel\CacheWarmer\CacheWarmerAggregate data_collector.request container Symfony\Component\HttpKernel\DataCollector\RequestDataCollector data_collector.router container Symfony\Bundle\FrameworkBundle\DataCollector\RouterDataCollector database_connection n/a alias for doctrine.dbal.default_connection debug.controller_resolver container Symfony\Component\HttpKernel\Controller\TraceableControllerResolver debug.deprecation_logger_listener container Symfony\Component\HttpKernel\EventListener\ErrorsLoggerListener debug.emergency_logger_listener container Symfony\Component\HttpKernel\EventListener\ErrorsLoggerListener debug.event_dispatcher container Symfony\Component\HttpKernel\Debug\TraceableEventDispatcher debug.stopwatch container Symfony\Component\Stopwatch\Stopwatch debug.templating.engine.php container Symfony\Bundle\FrameworkBundle\Templating\TimedPhpEngine debug.templating.engine.twig n/a alias for templating doctrine container Doctrine\Bundle\DoctrineBundle\Registry doctrine.dbal.connection_factory container Doctrine\Bundle\DoctrineBundle\ConnectionFactory doctrine.dbal.default_connection container stdClass doctrine.orm.default_entity_manager container Doctrine\ORM\EntityManager doctrine.orm.default_manager_configurator container Doctrine\Bundle\DoctrineBundle\ManagerConfigurator doctrine.orm.entity_manager n/a alias for doctrine.orm.default_entity_manager doctrine.orm.validator.unique container Symfony\Bridge\Doctrine\Validator\Constraints\UniqueEntityValidator doctrine.orm.validator_initializer container Symfony\Bridge\Doctrine\Validator\DoctrineInitializer event_dispatcher container Symfony\Component\EventDispatcher\ContainerAwareEventDispatcher file_locator container Symfony\Component\HttpKernel\Config\FileLocator filesystem container Symfony\Component\Filesystem\Filesystem form.csrf_provider container Symfony\Component\Form\Extension\Csrf\CsrfProvider\SessionCsrfProvider form.factory container Symfony\Component\Form\FormFactory form.registry container Symfony\Component\Form\FormRegistry form.resolved_type_factory container Symfony\Component\Form\ResolvedFormTypeFactory form.type.birthday container Symfony\Component\Form\Extension\Core\Type\BirthdayType form.type.button container Symfony\Component\Form\Extension\Core\Type\ButtonType form.type.checkbox container Symfony\Component\Form\Extension\Core\Type\CheckboxType form.type.choice container Symfony\Component\Form\Extension\Core\Type\ChoiceType form.type.collection container Symfony\Component\Form\Extension\Core\Type\CollectionType form.type.country container Symfony\Component\Form\Extension\Core\Type\CountryType form.type.currency container Symfony\Component\Form\Extension\Core\Type\CurrencyType form.type.date container Symfony\Component\Form\Extension\Core\Type\DateType form.type.datetime container Symfony\Component\Form\Extension\Core\Type\DateTimeType form.type.email container Symfony\Component\Form\Extension\Core\Type\EmailType form.type.entity container Symfony\Bridge\Doctrine\Form\Type\EntityType form.type.file container Symfony\Component\Form\Extension\Core\Type\FileType form.type.form container Symfony\Component\Form\Extension\Core\Type\FormType form.type.hidden container Symfony\Component\Form\Extension\Core\Type\HiddenType form.type.integer container Symfony\Component\Form\Extension\Core\Type\IntegerType form.type.language container Symfony\Component\Form\Extension\Core\Type\LanguageType form.type.locale container Symfony\Component\Form\Extension\Core\Type\LocaleType form.type.money container Symfony\Component\Form\Extension\Core\Type\MoneyType form.type.number container Symfony\Component\Form\Extension\Core\Type\NumberType form.type.password container Symfony\Component\Form\Extension\Core\Type\PasswordType form.type.percent container Symfony\Component\Form\Extension\Core\Type\PercentType form.type.radio container Symfony\Component\Form\Extension\Core\Type\RadioType form.type.repeated container Symfony\Component\Form\Extension\Core\Type\RepeatedType form.type.reset container Symfony\Component\Form\Extension\Core\Type\ResetType form.type.search container Symfony\Component\Form\Extension\Core\Type\SearchType form.type.submit container Symfony\Component\Form\Extension\Core\Type\SubmitType form.type.text container Symfony\Component\Form\Extension\Core\Type\TextType form.type.textarea container Symfony\Component\Form\Extension\Core\Type\TextareaType form.type.time container Symfony\Component\Form\Extension\Core\Type\TimeType form.type.timezone container Symfony\Component\Form\Extension\Core\Type\TimezoneType form.type.url container Symfony\Component\Form\Extension\Core\Type\UrlType form.type_extension.csrf container Symfony\Component\Form\Extension\Csrf\Type\FormTypeCsrfExtension form.type_extension.form.http_foundation container Symfony\Component\Form\Extension\HttpFoundation\Type\FormTypeHttpFoundationExtension form.type_extension.form.validator container Symfony\Component\Form\Extension\Validator\Type\FormTypeValidatorExtension form.type_extension.repeated.validator container Symfony\Component\Form\Extension\Validator\Type\RepeatedTypeValidatorExtension form.type_extension.submit.validator container Symfony\Component\Form\Extension\Validator\Type\SubmitTypeValidatorExtension form.type_guesser.doctrine container Symfony\Bridge\Doctrine\Form\DoctrineOrmTypeGuesser form.type_guesser.validator container Symfony\Component\Form\Extension\Validator\ValidatorTypeGuesser fragment.handler container Symfony\Component\HttpKernel\Fragment\FragmentHandler fragment.listener container Symfony\Component\HttpKernel\EventListener\FragmentListener fragment.renderer.hinclude container Symfony\Bundle\FrameworkBundle\Fragment\ContainerAwareHIncludeFragmentRenderer fragment.renderer.inline container Symfony\Component\HttpKernel\Fragment\InlineFragmentRenderer http_kernel container Symfony\Component\HttpKernel\DependencyInjection\ContainerAwareHttpKernel kernel container locale_listener container Symfony\Component\HttpKernel\EventListener\LocaleListener logger container Symfony\Bridge\Monolog\Logger mailer n/a alias for swiftmailer.mailer.default monolog.handler.chromephp container Symfony\Bridge\Monolog\Handler\ChromePhpHandler monolog.handler.debug container Symfony\Bridge\Monolog\Handler\DebugHandler monolog.handler.firephp container Symfony\Bridge\Monolog\Handler\FirePHPHandler monolog.handler.main container Monolog\Handler\StreamHandler monolog.logger.deprecation container Symfony\Bridge\Monolog\Logger monolog.logger.doctrine container Symfony\Bridge\Monolog\Logger monolog.logger.emergency container Symfony\Bridge\Monolog\Logger monolog.logger.event container Symfony\Bridge\Monolog\Logger monolog.logger.profiler container Symfony\Bridge\Monolog\Logger monolog.logger.request container Symfony\Bridge\Monolog\Logger monolog.logger.router container Symfony\Bridge\Monolog\Logger monolog.logger.security container Symfony\Bridge\Monolog\Logger monolog.logger.templating container Symfony\Bridge\Monolog\Logger profiler container Symfony\Component\HttpKernel\Profiler\Profiler profiler_listener container Symfony\Component\HttpKernel\EventListener\ProfilerListener property_accessor container Symfony\Component\PropertyAccess\PropertyAccessor request request response_listener container Symfony\Component\HttpKernel\EventListener\ResponseListener router container Symfony\Bundle\FrameworkBundle\Routing\Router router_listener container Symfony\Component\HttpKernel\EventListener\RouterListener routing.loader container Symfony\Bundle\FrameworkBundle\Routing\DelegatingLoader security.context container Symfony\Component\Security\Core\SecurityContext security.encoder_factory container Symfony\Component\Security\Core\Encoder\EncoderFactory security.firewall container Symfony\Component\Security\Http\Firewall security.firewall.map.context.dev container Symfony\Bundle\SecurityBundle\Security\FirewallContext security.firewall.map.context.login container Symfony\Bundle\SecurityBundle\Security\FirewallContext security.firewall.map.context.rest container Symfony\Bundle\SecurityBundle\Security\FirewallContext security.firewall.map.context.secured_area container Symfony\Bundle\SecurityBundle\Security\FirewallContext security.rememberme.response_listener container Symfony\Component\Security\Http\RememberMe\ResponseListener security.secure_random container Symfony\Component\Security\Core\Util\SecureRandom security.validator.user_password container Symfony\Component\Security\Core\Validator\Constraints\UserPasswordValidator sensio.distribution.webconfigurator n/a alias for sensio_distribution.webconfigurator sensio_distribution.webconfigurator container Sensio\Bundle\DistributionBundle\Configurator\Configurator sensio_framework_extra.cache.listener container Sensio\Bundle\FrameworkExtraBundle\EventListener\CacheListener sensio_framework_extra.controller.listener container Sensio\Bundle\FrameworkExtraBundle\EventListener\ControllerListener sensio_framework_extra.converter.datetime container Sensio\Bundle\FrameworkExtraBundle\Request\ParamConverter\DateTimeParamConverter sensio_framework_extra.converter.doctrine.orm container Sensio\Bundle\FrameworkExtraBundle\Request\ParamConverter\DoctrineParamConverter sensio_framework_extra.converter.listener container Sensio\Bundle\FrameworkExtraBundle\EventListener\ParamConverterListener sensio_framework_extra.converter.manager container Sensio\Bundle\FrameworkExtraBundle\Request\ParamConverter\ParamConverterManager sensio_framework_extra.view.guesser container Sensio\Bundle\FrameworkExtraBundle\Templating\TemplateGuesser sensio_framework_extra.view.listener container Sensio\Bundle\FrameworkExtraBundle\EventListener\TemplateListener service_container container session container Symfony\Component\HttpFoundation\Session\Session session.handler container Symfony\Component\HttpFoundation\Session\Storage\Handler\NativeFileSessionHandler session.storage n/a alias for session.storage.native session.storage.filesystem container Symfony\Component\HttpFoundation\Session\Storage\MockFileSessionStorage session.storage.native container Symfony\Component\HttpFoundation\Session\Storage\NativeSessionStorage session.storage.php_bridge container Symfony\Component\HttpFoundation\Session\Storage\PhpBridgeSessionStorage session_listener container Symfony\Bundle\FrameworkBundle\EventListener\SessionListener streamed_response_listener container Symfony\Component\HttpKernel\EventListener\StreamedResponseListener swiftmailer.email_sender.listener container Symfony\Bundle\SwiftmailerBundle\EventListener\EmailSenderListener swiftmailer.mailer n/a alias for swiftmailer.mailer.default swiftmailer.mailer.default container Swift_Mailer swiftmailer.mailer.default.plugin.messagelogger container Swift_Plugins_MessageLogger swiftmailer.mailer.default.spool container Swift_FileSpool swiftmailer.mailer.default.transport container Swift_Transport_SpoolTransport swiftmailer.mailer.default.transport.real container Swift_Transport_EsmtpTransport swiftmailer.plugin.messagelogger n/a alias for swiftmailer.mailer.default.plugin.messagelogger swiftmailer.spool n/a alias for swiftmailer.mailer.default.spool swiftmailer.transport n/a alias for swiftmailer.mailer.default.transport swiftmailer.transport.real n/a alias for swiftmailer.mailer.default.transport.real templating container Symfony\Bundle\TwigBundle\Debug\TimedTwigEngine templating.asset.package_factory container Symfony\Bundle\FrameworkBundle\Templating\Asset\PackageFactory templating.filename_parser container Symfony\Bundle\FrameworkBundle\Templating\TemplateFilenameParser templating.globals container Symfony\Bundle\FrameworkBundle\Templating\GlobalVariables templating.helper.actions container Symfony\Bundle\FrameworkBundle\Templating\Helper\ActionsHelper templating.helper.assets request Symfony\Component\Templating\Helper\CoreAssetsHelper templating.helper.code container Symfony\Bundle\FrameworkBundle\Templating\Helper\CodeHelper templating.helper.form container Symfony\Bundle\FrameworkBundle\Templating\Helper\FormHelper templating.helper.logout_url container Symfony\Bundle\SecurityBundle\Templating\Helper\LogoutUrlHelper templating.helper.request container Symfony\Bundle\FrameworkBundle\Templating\Helper\RequestHelper templating.helper.router container Symfony\Bundle\FrameworkBundle\Templating\Helper\RouterHelper templating.helper.security container Symfony\Bundle\SecurityBundle\Templating\Helper\SecurityHelper templating.helper.session container Symfony\Bundle\FrameworkBundle\Templating\Helper\SessionHelper templating.helper.slots container Symfony\Component\Templating\Helper\SlotsHelper templating.helper.translator container Symfony\Bundle\FrameworkBundle\Templating\Helper\TranslatorHelper templating.loader container Symfony\Bundle\FrameworkBundle\Templating\Loader\FilesystemLoader templating.name_parser container Symfony\Bundle\FrameworkBundle\Templating\TemplateNameParser translation.dumper.csv container Symfony\Component\Translation\Dumper\CsvFileDumper translation.dumper.ini container Symfony\Component\Translation\Dumper\IniFileDumper translation.dumper.mo container Symfony\Component\Translation\Dumper\MoFileDumper translation.dumper.php container Symfony\Component\Translation\Dumper\PhpFileDumper translation.dumper.po container Symfony\Component\Translation\Dumper\PoFileDumper translation.dumper.qt container Symfony\Component\Translation\Dumper\QtFileDumper translation.dumper.res container Symfony\Component\Translation\Dumper\IcuResFileDumper translation.dumper.xliff container Symfony\Component\Translation\Dumper\XliffFileDumper translation.dumper.yml container Symfony\Component\Translation\Dumper\YamlFileDumper translation.extractor container Symfony\Component\Translation\Extractor\ChainExtractor translation.extractor.php container Symfony\Bundle\FrameworkBundle\Translation\PhpExtractor translation.loader container Symfony\Bundle\FrameworkBundle\Translation\TranslationLoader translation.loader.csv container Symfony\Component\Translation\Loader\CsvFileLoader translation.loader.dat container Symfony\Component\Translation\Loader\IcuResFileLoader translation.loader.ini container Symfony\Component\Translation\Loader\IniFileLoader translation.loader.mo container Symfony\Component\Translation\Loader\MoFileLoader translation.loader.php container Symfony\Component\Translation\Loader\PhpFileLoader translation.loader.po container Symfony\Component\Translation\Loader\PoFileLoader translation.loader.qt container Symfony\Component\Translation\Loader\QtFileLoader translation.loader.res container Symfony\Component\Translation\Loader\IcuResFileLoader translation.loader.xliff container Symfony\Component\Translation\Loader\XliffFileLoader translation.loader.yml container Symfony\Component\Translation\Loader\YamlFileLoader translation.writer container Symfony\Component\Translation\Writer\TranslationWriter translator n/a alias for translator.default translator.default container Symfony\Bundle\FrameworkBundle\Translation\Translator twig container Twig_Environment twig.controller.exception container Symfony\Bundle\TwigBundle\Controller\ExceptionController twig.exception_listener container Symfony\Component\HttpKernel\EventListener\ExceptionListener twig.loader container Symfony\Bundle\TwigBundle\Loader\FilesystemLoader twig.translation.extractor container Symfony\Bridge\Twig\Translation\TwigExtractor uri_signer container Symfony\Component\HttpKernel\UriSigner bla_orm.listener container Bla\OrmBundle\EventListener\UserManager validator container Symfony\Component\Validator\Validator web_profiler.controller.exception container Symfony\Bundle\WebProfilerBundle\Controller\ExceptionController web_profiler.controller.profiler container Symfony\Bundle\WebProfilerBundle\Controller\ProfilerController web_profiler.controller.router container Symfony\Bundle\WebProfilerBundle\Controller\RouterController web_profiler.debug_toolbar container Symfony\Bundle\WebProfilerBundle\EventListener\WebDebugToolbarListener Update It seems that the listener is not invoked when an updateAction, generated by generate:doctrine:crud has taken place though. At another part of the code the lister seems to be invoked. Though, there are both Controller types and both us $em->persist($something); $em->flush(); to save the changes. I would expect that in both cases the listener is invoked.

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Encrypt/Decrypt ECB/PKS5/Blowfish between AS3Crypto & Javax.Crypto fails with padding error

- by BlueDude

I have a secret key that was sent to me as a file so I can encrypt some xml data using Blowfish. How do I access the key so that I can use it with AS3Crypto? I assume I need to Embed it using the [Embed] meta tag. It's mimeType="application/octet-stream" but I'm not sure if thats right. How do I embed, then reference this file as the secret key? The xmls that I'm encrypting cannot be decrypted on the Java side. Each attempt fails with this exception: javax.crypto.BadPaddingException: Given final block not properly padded. As a bonus, if anyone has experience using the lib to work with the Java implementation and knows the ideal mode/padding/IV to use that would be awesome. Thanks! //keyFile is an embedded asset. I was given a file to use as the key var kdata:ByteArray = new keyFile() as ByteArray; //Convert orderXML to Base64 var orderData:ByteArray = Base64.decodeToByteArray(String(orderXML)); //Cipher name var cname:String = "simple-blowfish-ecb"; var pad:IPad = new PKCS5; var mode:ICipher = Crypto.getCipher(cname, kdata, pad); //not sure if this is necessary. seems to be also set in mode pad.setBlockSize(mode.getBlockSize()); mode.encrypt(orderData); var transmitXML:String = Base64.encodeByteArray(orderData); //DEBUG: Output to TextArea storePanel.statusBox.text += "\n--TRANSMIT--\n"+transmitXML;

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Can the Flash CS4 [embed] tag be made to export assets to frame 2 rather than frame 1?

- by Tim Knauf

We're working on a Flash CS4 project where the main .fla file has ballooned in size and 'Publish' is taking forever. I suspect a large amount of the size (and at least some of the compile time) is due to the quantity of audio symbols in the library. I would love to remove this unnecessary bloat from the .fla file. I've experimented with removing an audio symbol from the library and using the [embed] metadata tag instead, like so: [Embed(source="audio/music/EndOfLevelDitty.mp3")] public var EndOfLevelDitty:Class The resulting published file works perfectly, but there is a problem. Our game uses a preloader on the first frame of the timeline, so all other classes need to be exported in frame 2 (as set in Publish Settings ActionScript 3.0 Settings). So a size report normally begins like this: Frame # Frame Bytes Total Bytes Scene ------- ----------- ----------- ---------------- 1 284515 284515 Scene 1 2 5485305 5769820 (AS 3.0 Classes Export Frame) However, if I use an [embed] tag on a small sound, my size report is now: Frame # Frame Bytes Total Bytes Scene ------- ----------- ----------- ---------------- 1 363320 363320 Scene 1 2 5407240 5770560 (AS 3.0 Classes Export Frame) As you can see, the embedded sound has been exported into frame 1 rather than frame 2. If I were to embed all sounds in this manner, the size of frame 1 would grow to be huge, and users would be looking at a white screen for ages before the preloader frame even loaded. So my question is this: can I use an [embed] tag but have the embedded asset export in frame 2 instead of frame 1? Project constraints: Our team composition means we can't change to pure Flex at this stage. The compiled .swf needs to be 'all in one', so we can't split the preloader into a separate file, and we can't access external resources. Edit: I'd also settle for having the audio in an embedded library SWC, but there seems to be no way to make that embed in frame 2 either; it always ends up in frame 1.

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Qt Jambi: Accessing the content of QNetworkReply

- by Richard

Hi All, I'm having trouble accessing the content of QNetworkReply objects. Content appears to be empty or zero. According to the docs (translating from c++ to java) I think I've got this set up correctly, but to no avail. Additionally an "Unknown error" is being reported. Any ideas much appreciated. Code: public class Test extends QObject { private QWebPage page; public Test() { page = new QWebPage(); QNetworkAccessManager nac = new QNetworkAccessManager(); nac.finished.connect(this, "requestFinished(QNetworkReply)"); page.setNetworkAccessManager(nac); page.loadProgress.connect(this, "loadProgress(int)"); page.loadFinished.connect(this, "loadFinished()"); } public void requestFinished(QNetworkReply reply) { reply.reset(); reply.open(OpenModeFlag.ReadOnly); reply.readyRead.connect(this, "ready()"); // never gets called System.out.println("bytes: " + reply.url().toString()); // writes out asset uri no problem System.out.println("bytes: " + reply.bytesToWrite()); // 0 System.out.println("At end: " + reply.atEnd()); // true System.out.println("Error: " + reply.errorString()); // "Unknown error" } public void loadProgress(int progress) { System.out.println("Loaded " + progress + "%"); } public void loadFinished() { System.out.println("Done"); } public void ready() { System.out.println("Ready"); } public void open(String url) { page.mainFrame().load(new QUrl(url)); } public static void main(String[] args) { QApplication.initialize(new String[] { }); Test t = new Test(); t.open("http://news.bbc.co.uk"); QApplication.exec(); } }

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Rails paginate array items one-by-one instead of page-by-page

- by hnovick

Hi Guys, I have a group of assets, let's call them "practitioners". I'm displaying these practitioners in the header of a calendar interface. There are 7 columns to the calendar. 7 columns = 7 practitioners per view/page. Right now: if the first page shows you practitioners 1-7, when you go the next page you will see practitioners 8-15, next page 16-23, etc. etc. i am wondering how to page the practitioners so that if the first page shows you practitioners 1-7, the next page will show you practitioners 2-8, then 3-9, etc. etc. i would greatly appreciate any help you can offer. here is the rails code i am working with. best regards, harris novick # get the default sort order sort_order = RESOURCE_SORT_ORDER # if we've been given asset ids, start our list with them unless params[:asset_ids].blank? params[:asset_ids] = params[:asset_ids].values unless params[:asset_ids].is_a?(Array) sort_order = "#{params[:asset_ids].collect{|id| "service_provider_resources.id = #{id} DESC"}.join(",")}, #{sort_order}" end @asset_set = @provider.active_resources(:include => {:active_services => :latest_approved_version}).paginate( :per_page => RESOURCES_IN_DAY_VIEW, :page => params[:page], :order => sort_order )

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Linking AS code to symbols defined in an external SWC?

- by Ender

(apologies ahead of time, I only really know Flash; my Flex experience is basically nil. There may be a very standard and obvious workflow solution that Flex people know about) I have a number of UI elements that are graphically quite complex (they're not components, they're just Sprites). Since it takes a long time to compile them, I've been trying to move them into an external .swc. However, I want to associate some code with these classes, but I don't want to have to recompile the graphical assets every time I make a code change. At the moment I have it set up like this: UI elements are created in a separate FLA and exported to a SWC. In my primary FLA, I have actionscript classes that extend each of the graphical assets in the SWC. For example: external.swc: (some symbol defined in the Library and exported for actionscript in frame 1) class: com.foo.WidgetGraphic base: flash.display.Sprite main.fla: Widget.as: package com.foo { public class Widget extends WidgetGraphic { ... } } This works, but is time-consuming and prone to error. I'd rather be able to avoid having to inherit from each graphical asset, and just define them directly. Is there a better way to do what I'm trying to accomplish? Note: the main concern here is compile time. I don't have any movies or audio or fonts, just a lot of vector art assets that appear to be slowing down my compilation time significantly. When I'm debugging I'm only making code changes, and would rather not have to keep recompiling the art...

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"Link" against a SWC in Flex

- by ggambett

I'm trying to do a very simple app in Flash/Flex, that loads an image embedded in the swf itself and then shows it. The thing is I'm trying to do it using the command line only (mxmlc and compc) and without using @Embed, and failing miserably. I have a very simple Main.as : package { import flash.display.*; import flash.utils.*; public class Main extends Sprite { public function Main () : void { var pDef:Class = getDefinitionByName("icon_big.png") as Class; var _image:BitmapData = new pDef(0, 0); var pSprite:Sprite = new Sprite(); pSprite.graphics.beginBitmapFill(_image); pSprite.graphics.drawRect(0, 0, _image.width, _image.height); pSprite.graphics.endFill(); addChild(pSprite); } } } This works fine if I add icon_big.png to the Library using the Flash IDE, but I can't figure out how to do it from the command line. I'm using compc to put the png inside a swc : compc --include-file icon_big.png icon_big.png -output assets.swc This generates a 17 kb assets.swf, slightly bigger than icon_big.png. Then I try to compile and link Main.as : mxmlc -include-libraries+=assets.swc Main.as This produces a 944 byte Main.swf, which clearly doesn't include the asset, and fails at runtime. According to the mxmlc docs I found, -include-libraries should link with every class, including the ones not directly referenced by code (as is the case here, since I'm getting the class from code), and it unsurprisingly fails at runtime. Note that this same code (or, more precisely, quite equivalent code) works when used within a Flash project - I'm not looking to fix the code, but how to do in the command line whatever Flash does internally. I feel I'm just "not getting" something... any clues?

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Memory usage in Flash / Flex / AS3

- by ggambett

I'm having some trouble with memory management in a flash app. Memory usage grows quite a bit, and I've tracked it down to the way I load assets. I embed several raster images in a class Embedded, like this [Embed(source="/home/gabriel/text_hard.jpg")] public static var ASSET_text_hard_DOT_jpg : Class; I then instance the assets this way var pClass : Class = Embedded[sResource] as Class; return new pClass() as Bitmap; At this point, memory usage goes up, which is perfectly normal. However, nulling all the references to the object doesn't free the memory. Based on this behavior, looks like the flash player is creating an instance of the class the first time I request it, but never ever releases it - not without references, calling System.gc(), doing the double LocalConnection trick, or calling dispose() on the BitmapData objects. Of course, this is very undesirable - memory usage would grow until everything in the SWFs is instanced, regardless of whether I stopped using some asset long ago. Is my analysis correct? Can anything be done to fix this?

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C# WinForms MultiThreading in Loop

- by Goober

Scenario I have a background worker in my application that runs off and does a bunch of processing. I specifically used this implementation so as to keep my User Interface fluid and prevent it from freezing up. I want to keep the background worker, but inside that thread, spawn off ONLY 3 MORE threads - making them share the processing (currently the worker thread just loops through and processes each asset one-by-one. However I would like to speed this up but using only a limited number of threads. Question Given the code below, how can I get the loop to choose a thread that is free, and then essentially wait if there isn't one free before it continues. CODE foreach (KeyValuePair<int, LiveAsset> kvp in laToHaganise) { Haganise h = new Haganise(kvp.Value, busDate, inputMktSet, outputMktSet, prodType, noOfAssets, bulkSaving); h.DoWork(); } Thoughts I'm guessing that I would have to start off by creating 3 new threads, but my concern is that if I'm instantiating a new Haganise object each time - how can I pass the correct "h" object to the correct thread..... Thread firstThread = new Thread(new ThreadStart(h.DoWork)); Thread secondThread =new Thread(new ThreadStart(h.DoWork)); Thread thirdThread = new Thread(new ThreadStart(h.DoWork)); Help greatly appreciated.

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Home_path issue with RoR testing locally on mobile device

- by Amir

When I use <%= link_to image_tag("foo.png"), home_path %> and display it on my localhost on my iPhone, it's broken. When I inspect on with firebug, the src of the image is http://localhost:3000/images/foo.png thus causing it to break on my iPhone. When I use <img src="/images/foo.png" /> it displays fine on my iPhone. I am pointing to the IP address of my PC running the server of my rails app in Safari. It's loading the text but all the css, JavaScript, and images are missing unless the path is absolute with using the rails default helpers. Is there a way to correct this path issue locally so it's absolute like /images/foo.png instead of http://localhost:3000/images/foo.png. Update CSS file paths are also affected. Instead of just making the path /stylesheets/foo.css, it's http://localhost:3000/stylesheets/foo.css. Update: Solution It's the Facebook plugin changing the asset host to the callback url of my facebook app settings which is currently set to http://localhost:3000/

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Loading a helper elsewhere than the autoload.php?

- by drpcken

I inherited a project and I'm cleaning up a bit and trying to finish it. I noticed that they used (or wrote) a breadcrumb helper. It is in my helpers folder and is named breadcrumb_helper.php It has a single function to build a breadcrumb menu with links and pass it to the view breadcrumbs.php. Here's the code: function show_breadcrumbs() { $ci =& get_instance(); $ci->load->helper('inflector'); $data = ''; //build breadcrumb and store in $data $this->load->view("breadcrumbs", $data) } I was trying to figure out how this helper worked and I checked the autoload.php but there is no reference to the helper in there. In face here is my autoload: $autoload['helper'] = array('url','asset','combine','navigation','form','portfolio','cookie','default'); This show_breadcrumbs() function is used quite a bit in some of my pages so I'm confused as to how its loading if it isn't in the autoloader. It is called like this in a few of my pages: <?=show_breadcrumbs()?> What am I missing? Why isn't this in my autoload? I even did a global search and couldn't find anywhere the helper is being loaded.

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