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• Test Driven Development For Complex Methods involving external dependency

  - by bill_tx

  I am implementing a Service Contract for WCF Service. As per TDD I wrote a test case to just pass it using hardcoded values. After that I started to put real logic into my Service implementation. The actual logic relies on 3-4 external service and database. What should I do to my original test case that I wrote ? If i Keep it same in order to make test pass it will have to call several other external services. So I have question in general what should I do if I write a test case for a Business Facade first using TDD and later when I add real logic, if it involves external dependency.

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• Hidden features of x86 assembly

  - by Earlz

  I am still a fan of x86 assembly(sorta) and know a lot of developers still using x86 assembly, although by far there are very few features available in assembly, let us list out the most useful and not so well known ones. Of course the question is on the lines of the Hidden Features questions listed below.: Hidden Features of JavaScript Hidden Features of CSS Hidden Features of C# Hidden Features of VB.NET Hidden Features of Java Hidden Features of ASP.NET Hidden Features of Python Hidden Features of TextPad Hidden Features of Eclipse Hidden Features of Classic ASP Please specify one feature per answer. Also, you can specify all bits of the x86 such as 16bit(real mode), 32bit, and 64bit. Please keep it neutral of assembler though. Both Intel and AT&T syntax is welcome but please don't for example demonstrate a useful macro feature for yasm.

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• Ensure a new session every time the user connects to a Servlet

  - by Daziplqa

  Hi, I've a JSP/Servlet Web App that consist of more than one servlet (and some JSPs) I need to create an new HttpSession whenever the users access servlet A, knowing that, servlet A is the home page (i.e. he access it as the first servlet/page in the application) so far so good, I can write the following code at the start of the servlet A: HttpSession session = request.getSession(false); if (session == null) { logger.debug("starting new session..."); session = request.getSession(); // other staff here } But the problem is, if the user didn't close his browser (even if he closes the tab - in firefox for instance - the session will still be open), so when he try to open my site again, the last session will be re-used (in the rage of session timeout ofcourse), and this I don't need. I need whenever he access Servlet A, he got created a brand new HttpSession. but unfortunately, he may access this servlet twice per session based on some scenario!! Please help.

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• Improve mysql JDBC insert call

  - by richs

  i have a legacy Java system that every time it gets an order it makes a JDBC call to a stored procedure for each field in the order. Generally the stored procedure will get called 20 to 30 times for each order. The store procedure is just doing an insert into a table for each field. i need to improve the performance of this operation. one thought i had was to create an insert query string that does multiple inserts in one JDBC call. MySql supports a multiple insert string. INSERT INTO PersonAge (name, age) VALUES ('Helen', 24), ('Katrina', 21), ('Samia', 22), ('Hui Ling', 25), ('Yumie', 29) This has the advantage of only requiring one JDBC call per order. Any other ideas on how to improve performance?

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• Reading multiple files with PHPExcel

  - by KaOSoFt

  Hello there. I just recently started using this library (the one from CodePlex), but I ran into some issues. My goal is to use it so I can process some data from multiple Excel files, and send such data to a database, per file. I'm doing something like: foreach( $file_list as $file ) { $book = PHPExcel_IOFactory::load( $path . $file ); } So, inside the foreach I'm (for now) just showing the data to the user, but after five files, I get a memory error: Fatal error: Allowed memory size of 33554432 bytes exhausted (tried to allocate 50688 bytes) in /var/www/test/classes/PHPExcel/Shared/OLERead.php on line 76 Is there a way to __destruct the object after each file is loaded, so space is reserved (made free) for the next file, instead of accumulating it, or do you rather know of a reason and work-around for this? Please let me know any suggestions you have. Thanks in advance.

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• Hosting solution for images for website written in PHP

  - by tomaszs

  I've written a website in PHP and it will have ability for users to upload images. My website will have more than 100.000 users. Aprox. 1k users will upload image about 50 KB. And every image will be displayed on this website 5k times so it's transfer of: 1k x 50 KB x 5k = 250 GB per month. So my question is: Do you know any good solution (hosting or CDN network or else) that: will be payed for transfer not space used and no entrance fee will have API to upload images easily with PHP is extremely easy to use will be good for low budget will not require any special, complicated registration and formal things will allow commercial use will allow using this images in website layout ?

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• Configure Active Relying Party STS to Trust Multiple Identity Provider STSes

  - by CodeChef

  I am struggling with the configuration for the scenario below. I have a custom WCF/WIF STS (RP-STS) that provides security tokens to my WCF services RP-STS is an "Active" STS RP-STS acts as a claims transformation STS RP-STS trusts tokens from many customer-specific identity provider STSes (IdP-STS) When a WCF Client connects to a service it should authenticate with it's local IdP-STS The reading that I've done describes this as Home Realm Discovery. HRD is usually described within the context of web applications and Passive STSes. My questions is, for my situation, does the logic for choosing an IdP-STS endpoint belong in the RP-STS or the WCF Client application? I thought it belonged in the RP-STS, but I cannot figure out the configuration to make this happen. RP-STS has a single endpoint, but I cannot figure out how to add more than one trusted issuer per endpoint. Any guidance on this would be very appreciated (I'm out of useful keywords to Google.) Also, if I'm way off please offer alternative approaches. Thanks!

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• Shell script [Expected end of line, etc. but found unknown token]

  - by rockinthesixstring

  I'm trying to build a Synergy AutoStart script as per this article, the shell is giving me the error Syntax Error Expected end of line, etc. but found unknown token Here is the script I'm working on... #!/bin/sh . /etc/rc.common run=(/usr/local/bin/synergyc -n $(hostname -s) -1 -f 192.168.0.108) KeepAlive () { proc=${1##*/} while [ -x "$1" ] do if ! ps axco command | grep -q "^${proc}\$" then "$@" fi sleep 3 done } StartService () { ConsoleMessage "Starting Synergy" KeepAlive "${run[@]}" & } StopService () { return 0 } RestartService () { return 0 } RunService "$1" And when the error is thrown, the "period" is highlighted on this line . /etc/rc.common Is there something I'm missing here?

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• Calculating string sizes on iPhone on a background thread

  - by jbrennan

  I've got some somewhat hefty string size calculations happening in my app (each one takes close to 500ms, and happens when the user scrolls to a new "page" in my app (like the Weather app). The delay only happens once per page, as the calculation only needs to be run once (and can even be cached for subsequent launches with the same data). Anyway, I still like to not block the UI for this type of work, as to me it screams using threads, but I know UIKit is not meant to be used from other threads. (I know NSString is not part of UIKit, but the string sizing methods are part of the UIKitAdditions...) So how should I go about doing this? What's the best way to not block the UI and do so safely?

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• How to add multiple menu items with the same title to NSPopUpButton(NSMenu)?

  - by William S. Pear

  As docs say it's impossible to add two menu items to NSPopUpButton if they both have the same title. I was trying to add menu items to [popupButton menu], but with no luck. I was also trying to create a new menu, add items to it and then use [popupButton setMenu:newMenu], but no. Menu always display only one item per name. But I know it should be possible, if you try to create a smart playlist in iTunes, you could select "Playlist" from the left popup button, "=" from the middle, and the right one will hold menu items for every playlist in iTunes EVEN if they have the same title. So how do they do it?

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• Objective C: Create arrays from first array based on value

  - by Nic Hubbard

  I have an array of strings that are comma separated such as: Steve Jobs,12,CA Fake Name,21,CA Test Name,22,CA Bill Gates,44,WA Bill Nye,21,OR I have those values in an NSScanner object so that I can loop through the values and get each comma seperated value using objectAtIndex. So, what I would like to do, is group the array items into new arrays, based on a value, in this case, State. So, from those, I need to loop through, checking which state they are in, and push those into a new array, one array per state. CA Array: Steve Jobs,12,CA Fake Name,21,CA Test Name,22,CA WA Array: Bill Gates,44,WA OR Array: Bill Nye,21,OR So in the end, I would have 3 new arrays, one for each state. Also, if there were additional states used in the first array, those should have new arrays created also. Any help would be appreciated!

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• McAfee Virus Scan and Oracle RAC

  - by Lee Gathercole

  Hi, We're experiencing a strange problem with Oracle RAC and McAfee anti-virus. As part of the installation of the Oracle RAC we disable anti virus as directed. We have had our RAC running fine, but when we came to re-enable the AV and reboot we got the BSOD. Abnormal Program Termination (BugCheck, STOP: 0x00000035 (0x8E984678, 0x00000000, 0x00000000, 0x00000000 NO_MORE_IRP_STACK_LOCATIONS Following the standard process of raising this problem with Microsoft they identify the problem and also a fix. Microsoft talk about too many file filter drivers being present and pushing the DFS upper limit beyond the default size. Upping this value, as per msdn, has no impact. We're able to recover from this BSOD by disabling AV. We don't have the problem if we run the AV service manually whilst the system is up. However, if we make the service automatic we fail to boot. Tech Details 2 Node Oracle 10g Cluster 2 * Windows 2003 SP2, 16GB RAM, Quad Core 3ghz Processor SAN attached storage McAfee VirusScan Enterprise 8.5.0i, Scan Engine (5300.2777), DAT Version (5536.0000) Thanks Lee

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• Is it possible to a db constraint in for this rule?

  - by Pure.Krome

  Hi folks, I wish to make sure that my data has a constraint the following check (constraint?) in place This table can only have one BorderColour per hub/category. (eg. #FFAABB) But it can have multiple nulls. (all the other rows are nulls, for this field) Table Schema ArticleId INT PRIMARY KEY NOT NULL HubId TINYINT NOT NULL CategoryId INT NOT NULL Title NVARCHAR(100) NOT NULL Content NVARCHAR(MAX) NOT NULL BorderColour VARCHAR(7) -- Can be nullable. I'm gussing I would have to make a check constraint? But i'm not sure how, etc. sample data. 1, 1, 1, 'test', 'blah...', '#FFAACC' 1, 1, 1, 'test2', 'sfsd', NULL 1, 1, 2, 'Test3', 'sdfsd dsf s', NULL 1, 1, 2, 'Test4', 'sfsdsss', '#AABBCC' now .. if i add the following line, i should get some sql error.... INSERT INTO tblArticle VALUES (1, 2, 'aaa', 'bbb', '#ABABAB') any ideas?

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• Slow insert speed in Postgresql memory tablespace

  - by Prashant

  Hi, I have a requirement where I need to store the records at rate of 10,000 records/sec into a database (with indexing on a few fields). Number of columns in one record is 25. I am doing a batch insert of 100,000 records in one transaction block. To improve the insertion rate, I changed the tablespace from disk to RAM.With that I am able to achieve only 5,000 inserts per second. I have also done the following tuning in the postgres config: Indexes : no fsync : false logging : disabled Other information: - Tablespace : RAM - Number of columns in one row : 25 (mostly integers) - CPU : 4 core, 2.5 GHz - RAM : 48 GB I am wondering why a single insert query is taking around 0.2 msec on average when database is not writing anything on disk (as I am using RAM based tablespace). Is there something I am doing wrong? Help appreciated. Prashant

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• Safari wrapping too early

  - by the Hampster

  I've created a class web page with a page for midterm review. It uses jsMath to turn Tex into nice math. (MathML looks awful) Anyway, I would occasionally like to have several problems per line. Each problem is in its own <span>, so if it needs to wrap, it won't split the problem. It all seems to work, except that Safari for the Mac seems overly anxious to wrap, sometimes wrapping at 30% paragraph width. Even under inspection, it reports a width of 663px, but wrapping occurs at around 150px. There is no padding. Firefox renders just fine. A comparison is here: http://davehampson.net/Images/Safaribug.png Sometimes Safari works just fine. The original web page is here: http://math.davehampson.net/index3.php (study guide 2) I don't know if this is a bug in safari, or if there is some odd/subtle css point I am missing. Any help would be appreciated. --Dave

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• Spring Weblfow 2 - Double Submit

  - by John W.

  Hello All, I am investigating a possible issue with double submits and I am looking at the possibilty of a double submit from a webflow execution. I have read many times that webflow will handle double submits, there are plenty references here. However I then came across I a forum response on the spring source forums contradicting what I read saying, SWF synchronizes on the conversation. Only one request will be processed at a time per conversation. Take note that if you're using snapshots, then it's possible repeatedly clicking on the submit button will generate a second request. I would recommend setting history to invalidate or discard in the transition from your view-state. We do have snapshots enabled but the book notes that using snapshots actually allows to solve the double submits. Does anyone have any insight on this? Thanks.

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• Include a c# file in aspx page

  - by BeraCim

  Hi all: I have an aspx page that has a @Page directive which points to a c# class. e.g. <@ Page Language="C#" EnableSessionState="true" ValidateRequest="False" Inherits="MyClass" %> MyClass extends Page, which is the code behind class for that aspx page. Now I want to add another class to the aspx page. This class does some processing and will redirect the user to another page if certain conditions are met. It will be called before the above directive. I tried adding another @Page directive, but gotten an unknown error (literally). I'm thinking that there can only be one code behind class per aspx page so I got the error when I added another one. Googling such question didnt really help me with the answer. So, how do I add another c# class to the same aspx page? Thanks.

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• Do Scala and Erlang use green threads?

  - by CHAPa

  I've been reading a lot about how Scala and Erlang does lightweight threads and their concurrency model (actors). However, I have my doubts. Do Scala and Erlang use an approach similar to the old thread model used by Java (green threads) ? For example, suppose that there is a machine with 2 cores, so the Scala/Erlang environment will fork one thread per processor? The other threads will be scheduled by user-space (Scala VM / Erlang VM ) environment. Is this correct? Under the hood, how does this really work?

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• performance issue in a select query from a single table

  - by daedlus

  Hi , I have a table as below dbo.UserLogs ------------------------------------- Id | UserId |Date | Name| P1 | Dirty ------------------------------------- There can be several records per userId[even in millions] I have clustered index on Date column and query this table very frequently in time ranges. The column 'Dirty' is non-nullable and can take either 0 or 1 only so I have no indexes on 'Dirty' I have several millions of records in this table and in one particular case in my application i need to query this table to get all UserId that have at least one record that is marked dirty. I tried this query - select distinct(UserId) from UserLogs where Dirty=1 I have 10 million records in total and this takes like 10min to run and i want this to run much faster than this. [i am able to query this table on date column in less than a minute.] Any comments/suggestion are welcome. my env 64bit,sybase15.0.3,Linux

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• simpledateformat parsing date with 'Z' literal

  - by DanInDC

  I am trying to parse a date that looks like this: 2010-04-05T17:16:00Z This is a valid date per http://www.ietf.org/rfc/rfc3339.txt. The 'Z' literal "imply that UTC is the preferred reference point for the specified time." If I try to parse it using SimpleDateFormat and this pattern: yyyy-MM-dd'T'HH:mm:ss It will be parsed as a Mon Apr 05 17:16:00 EDT 2010 SimpleDateFormat is unable to parse the string with these patterns: yyyy-MM-dd'T'HH:mm:ssz yyyy-MM-dd'T'HH:mm:ssZ I can explicitly set the TimeZone to use on the SimpleDateFormat to get the expected output, but I don't think that should be necessary. Is there something I am missing? Is there an alternative date parser?

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• "Mem Usage" higher than "VM Size" in WinXP Task Manager

  - by Frederick

  In my Windows XP Task Manager, some processes display a higher value in the Mem Usage column than the VMSize. My Firefox instance, for example shows 111544 K as mem usage and 100576 K as VMSize. According to the help file of Task Manager Mem Usage is the working set of the process and VMSize is the committed memory in the Virtual address space. My question is, if the number of committed pages for a process is A and the number of pages in physical memory for the same process is B, shouldn't it always be B = A? Isn't the number of pages in physical memory per process a subset of the committed pages? Or is this something to do with sharing of memory among processes? Please explain. (Perhaps my definition of 'Working Set' is off the mark). Thanks.

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• Changing error message for datatype validation?

  - by Matthias

  Hey guys, I've a small question on ASP.NET MVC 2. I'm using Data Annotations on my Presentation Model and its model binder per default. But one step back, I want to do the most elementary thing: validation of the data type. Let's say I have an "int ID" on my model and want to edit the according entity in my view. If I enter something wrong like "foo", then I get a model error back, but the validation message is on English. I want to have this message in other languages, too. How can I do this? I remember that in MVC 1 I've written a custom model binder which checks the data types, but that's not what I want to do (at least not in MVC 2). Thus I hope there is a better way... Thanks, Matthias

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• EF 4 - associations with keys that dont match

  - by Steve Ward

  We're using POCOs and have 2 entities: Item and ItemContact. There are 1 or more contacts per item. Item has as a primary key: ItemID LanguageCode ItemContact has: ItemID ContactID We cant add an association with a referrential constraint as they have differing keys. There isnt a strict primary / foreign key as languageCode isnt in ItemContact and ContactID isnt in Item. How can we go about mapping this with an association for contacts for an item if there isnt a direct link but I still want to see the contacts for an item? One of the entities originates in a database view so it is not possible to add foreign keys to the database Thanks Stephen Ward

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• YouTube API Get all videos uploaded feed

  - by Paul

  Hi Guys, I can't seem to retrieve ALL videos from a particular channel on YouTube, despite the API giving example code that should perform just that. I'm using Java. http://gdata.youtube.com/feeds/api/users/GoogleDevelopers/uploads The above rss feed is the URL they suggest using along with the following sample code.. /*init the list*/ String feedUrl = "http://gdata.youtube.com/feeds/api/users/GoogleDevelopers/uploads"; VideoFeed videoFeeder = null; videoFeeder = serviceobject.getFeed(new URL(feedUrl), VideoFeed.class); Looping this with a for loop suggests 25 entries (as per the RSS). However - the actual number of videos uploaded is significantly larger. (662 at time of writing). My query is how on earth you retrieve everything with the API, not just a subset of the data. Any ideas on where I'm going wrong? Should I be using a different URL? http://www.youtube.com/GoogleDevelopers#g/a

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• Is it possible to add custom fields to a Drupal taxonomy term?

  - by user278457

  I'd like to add a date field to a drupal taxonomy term, alongside the default "title" and "description" Is there some technique/php/module that lets me do this? Is it possible to do with CCK?? I need to be able to display the new field in the same view presenting the content nodes referencing the term. At the moment, I've added a date field to the content nodes with CCK, and it's displayed by the view. But that's not exactly what I'm going for, I just want to update one date per term.

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