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• What are good Opensource Billing Solution with Customer Portal?

  - by krunaloverflow

  I'm looking for an Online Billing Solution along with a Customer Portal in open source space so that I can customize it the way as required in future. My requires are: Flat & Subscription(Periodical) based Billing (orders/invoices) Able to set products/services, its prices add customers or customers can register themselves from client end (a web page) and mange their profile themselves from customer portal, pay online, order products, check invoices, cancel order / subscription, etc. An interface (web service or API) that would provide a mechanism to check when customer recieves service, his current status and then allow them access to the services (similar to subscription membership website ) Please provide me with the options I should consider.

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• Cakephp beforeFind() - How do I add a JOIN condition AFTER the belongsTo association is added?

  - by michael

  I'm in Model-beforeFind($queryData), trying to add a JOIN condition to the queryData on a model which has belongsTo associations. Unfortunately, the new JOIN references a table in the belongsTo association, so it must appear AFTER the belongsTo in the query. Here is my Tagged-belongsTo association: app\plugins\tags\models\tagged.php (line 192) Array ( [Tag] => Array ( [className] => Tag [foreignKey] => tag_id [conditions] => [fields] => [order] => [counterCache] => ) [Group] => Array ( [className] => Group [foreignKey] => foreign_key [conditions] => Array ( [Tagged.model] => Group ) [fields] => [order] => [counterCache] => ) ) Here is the JOIN added in Tagged-beforeFind(), notice that the belongsTo joins have not yet been added: app\plugins\tags\models\tagged.php (line 194) Array ( [conditions] => Array ( [Tag.keyname] => europe ) [fields] => Array ( [0] => DISTINCT Group.* [1] => GroupPermission.* ) [joins] => Array ( [0] => Array ( [table] => permissions [alias] => GroupPermission [foreignKey] => [type] => INNER [conditions] => Array ( [GroupPermission.model] => Group [0] => GroupPermission.foreignId = Group.id [or] => Array ( ... ) ) ) ) [limit] => [offset] => [order] => Array ( [0] => ) [page] => 1 [group] => [callbacks] => 1 [by] => europe [model] => Group ) When I check the output, it fails with "1054: Unknown column 'Group.id' in 'on clause'" because the Permissions join appeared BEFORE the Groups join. SELECT DISTINCT `Group`.*, `GroupPermission`.* FROM `tagged` AS `Tagged` INNER JOIN permissions AS `GroupPermission` ON (`GroupPermission`.`model` = 'Group' AND `GroupPermission`.`foreignId` = `Group`.`id` AND (...)) LEFT JOIN `tags` AS `Tag` ON (`Tagged`.`tag_id` = `Tag`.`id`) LEFT JOIN `groups` AS `Group` ON (`Tagged`.`foreign_key` = `Group`.`id` AND `Tagged`.`model` = 'Group') WHERE `Tag`.`keyname` = 'europe' But this SQL (with Permissions joined moved to the end) works fine: SELECT DISTINCT `Group`.*, `GroupPermission`.* FROM `tagged` AS `Tagged` LEFT JOIN `tags` AS `Tag` ON (`Tagged`.`tag_id` = `Tag`.`id`) LEFT JOIN `groups` AS `Group` ON (`Tagged`.`foreign_key` = `Group`.`id` AND `Tagged`.`model` = 'Group') INNER JOIN permissions AS `GroupPermission` ON (`GroupPermission`.`model` = 'Group' AND `GroupPermission`.`foreignId` = `Group`.`id` AND (...)) WHERE `Tag`.`keyname` = 'europe' How do I add my join in beforeFind() after the belongsTo join?

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• Is the "impossible object" possible in computer graphics?

  - by CPP_Person

  This may be a silly question but I want to know the answer to it. I saw this thing called the "impossible object", while they're many different images of this online, it's suppost to be impossible geometry. Here is an example: Now as far as logic goes, I know you don't have to obey it in games, such as a flying cow, or an impossible object. So that's out of the way, but what stands in my way is whether or not there is a way to draw this onto a 3D scene. Like is there a way to represent it as a 3D object? Thanks!

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• Is programming for me? It seems too rigid and unforgiving.

  - by AM

  This question is a follow-up to: Should I continue to pursue programming based on my experience? I am currently majoring in CS in college and was thinking along similar lines as the above question. I'm fine at math and logic, but I haven't yet found programming to be enjoyable. Although I like the idea of being able to build software, too much of it seems to consist of figuring out tiny details or dealing with annoying bugs. So far I've only done small school projects and the like. Does programming become more enjoyable once you have more experience? How can someone know if a career in it is for them?

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• Developing applications for iPhone, BlackBerry and J2ME in ASP.Net

  Hi, I would like to introduce you a new mobile application framework iPFaces for developing native, form-oriented applications. The aim of the solution is to screen the programmer completely out from the mobile platform itself, and transfer the entire application logic to the central application server level. Developers with experience with one of the supported Web technologies (ASP.Net, Java, and PHP) may start working with iPFaces virtually immediately. For more information, see the project...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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• How can I bind an interface to a class decided by an xml or database configuration at the launch of the application?

  - by ipohfly

  I'm re-working on the design of an existing application which is build using WebForms. Currently the plan is to work it into a MVP pattern application while using Ninject as the IoC container. The reason for Ninject to be there is that the boss had wanted a certain flexibility within the system so that we can build in different flavor of business logic in the model and let the programmer to choose which to use based on the client request, either via XML configuration or database setting. I know that Ninject have no need for XML configuration, however I'm confused on how it can help to dynamically inject the dependency into the system? Imagine I have a interface IMember and I need to bind this interface to the class decided by a xml or database configuration at the launch of the application, how can I achieve that?

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• node.js storing gamestate, how?

  - by expressnoob

  I'm writing a game in javascript, and to prevent cheating, i'm having the game be played on the server (it's a board game like a more complicated checkers). Since the game is fairly complex, I need to store the gamestate in order to validate client actions. Is it possible to store the gamestate in memory? Is that smart? Should I do that? If so, how? I don't know how that would work. I can also store in redis. And that sort of thing is pretty familiar to me and requires no explanation. But if I do store in redis, the problem is that on every single move, the game would need to get the data from redis and interpret and parse that data in order to recreate the gamestate from scratch. But since moves happen very frequently this seems very stupid to me. What should I do?

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• Sort collection within collection using Linq

  - by user327066

  Hi, I have a one-to-many Linq query and I would like to sort on a property within the "many" collection. For example in the pseudo-code below, I am returned a List from the Linq query but I would like to sort / order the Products property based on the SequenceNumber property of the Product class. How can I do this? Any information is appreciated. Thanks. class Order { int OrderId; List<Product> Products; } class Product { string name; int SequenceNumber; }

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• Update int array based on parent

  - by Pickels

  I have the following int[] in my database: '{0}' '{0,0}' '{0,0,0}' '{0,0,0,0}' This column is used to sort my tree data. Now when a parent updates it's order the children should also update. For example if the second record updates it's order to 1 it should result in the following. '{0}' '{0,1}' '{0,1,0}' '{0,1,0,0}' So I was wondering what the query would be to update record 3 and 4. In case it's not clear what I am asking leave a comment I can add additional information. Screenshot of my actual data:

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• How to check if string contains a string in string array

  - by Abu Hamzah

  edit: the order might change as you can see in the below example, both string have same name but different order.... How would you go after checking to see if the both string array match? the below code returns true but in a reality its should return false since I have extra string array in the _check what i am trying to achieve is to check to see if both string array have same number of strings. string _exists = "Adults,Men,Women,Boys"; string _check = "Men,Women,Boys,Adults,fail"; if (_exists.All(s => _check.Contains(s))) //tried Equal { return true; } else { return false; }

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• C++ object in memory

  - by Neo_b

  Hello. Is there a standard in storing a C++ objects in memory? I wish to set a char* pointer to a certain address in memory, so that I can read certain objects' variables directly from the memory byte by byte. When I am using Dev C++, the variables are stored one by one right in the memory address of an object in the order that they were defined. Now, can it be different while using a different compiler (like the variables being in a different order, or somewhere else)? Thank you in advance. :-)

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• What things need to be considered when redeveloping the whole UI for a web app?

  - by Robin

  I am the lead developer on a thick client web app (Java swing) which we're looking at recreating as a web app. We're part way through some initial work, have chosen a framework on the server and integrated with our previous backend code. We're just starting to get into the client side of things, looking at javascript frameworks etc. The previous system was pretty sensibly architected so the logic is already serverside. The challenge ahead of us is really about redeveloping the user interface rather than anything else. What would be the list of things to consider in redeveloping the entire user interface for any application? I'm trying to get an idea of how large a task might still be ahead of me and the team.

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• java application architecture

  - by LostMohican

  We have to write an administration panel for many customers. But we want to have just one administration panel, and use it in various projects. This admin panel will have basic components such as access control logic, maker-checker system in changes, user logging and etc. It will also have reporting for the customer, logs of transaction of the customer (which can vary according to the industry such as mobile banking, banking, ticket sales). These components may have to be modified according to the business. So we are thinking about the architecture here, Is it OK to use jars of every basic components, and bring them together on a glue application? Or should we build each component as WARs and make interfaces between them? If there are any more ideas, it will be appreciated.

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• How to synchronize two (or n) replication processes for MS SQL databases?

  - by Yauheni Sivukha

  There are two master databases and two read-only copies updated by standard transactional replication. It is needed to map some entity from both read-only databases, lets say that A databases contains orders and B databases contains lines. The problem is that replication to one database can lag behind replication of second database, and at the moment of mapping R-databases will have inconsistent data. For example. We stored 2 orders with lines at 19:00 and 19:03. Mapping process started at 19:05, but to the moment of mapping A database replication processed all changes up to 19:03, but B database replication processed only changes up to 19:00. After mapping we will have order entity with order as of 19:03 and lines as of 19:00. The troubles are guaranteed:) In my particular case both databases have temporal model, so it is possible to fetch data for every time slice, but the problem is to identify time of latest replication. Question: How to synchronize replication processes for several databases to avoid situation described above?

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• Macro - To create one [.csv] file from/using multiple workbooks, kept in a folder, containing multi

  - by AJ

  Hello, I have more than one Excel Workbooks containing multiple worksheets in each of them. I would like to have a macro which help me to create (combine the information from) all the worksheets into one pipe [|] delimited [.csv] file. These sheets should be combined/appended into the [.csv] file, in the same order these worksbooks appear in a folder and in the order sheets appear in these workbooks. The macro should ask for a delimiter/separator specific to me and the input and output path based on my selection. It would be great if the output [.csv] file is names as "foldername" + "Output.csv" Thank you, Best Regards - AJ

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• Using TDD: "top down" vs. "bottom up"

  - by Christian Mustica

  Since I'm a TDD newbie, I'm currently developing a tiny C# console application in order to practice (because practice makes perfect, right?). I started by making a simple sketchup of how the application could be organized (class-wise) and started developing all domain classes that I could identify, one by one (test first, of course). In the end, the classes have to be integrated together in order to make the application runnable, i.e. placing necessary code in the Main method which calls the necessary logic. However, I don't see how I can do this last integration step in a "test first" manner. I suppose I wouldn't be having these issues had I used a "top down" approach. The question is: how would I do that? Should I have started by testing the Main() method? If anyone could give me some pointers, it will be much appreciated.

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• Format MySQL code inside PHP string

  - by JohnA

  Is there any program IDE or not that can format MySQL code inside PHP string e.g. I use PHPStorm IDE and it cannot do it. It does that for PHP and MYSQL but not for MYSQL inside php string. I am ready to use new IDE because now i have to manually format hundreds of database requests that are one line and not readable. Only criteria for my choice is that ide can do that automatically. <?php ... $request1 = "select * from tbl_admin where admin_id= {$_SESSION['admin_id']} and active= 1 order By admin_id Asc"; ... ?> should become <?php ... $request1 = "SELECT * FROM tbl_admin WHERE admin_id = {$_SESSION['admin_id']} AND active = 1 ORDER BY admin_id ASC"; ... ?>

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• Shuffling a list with a constraint

  - by 500

  Preparing a new psychophysic experiment, I have 48 original stimuli displayed 4 times (4 conditions). Resulting in 192 trials. Trying to randomize the order of presentation during the experiment, I need to maximize the distance between the 4 display of the same original stimuli. Please Consider : Table[{j, i}, {j, Range[48]}, {i, Range[4]}] Where j is the original stimuli number and i the condition Output Sample : {{1, 1}, {1, 2}, {1, 3}, {1, 4}, {2, 1}, {2, 2}, {2, 3}, {2, 4}, ... {47, 1}, {47, 2}, {47, 3},{47, 4}, {48, 1}, {48, 2}, {48, 3}, {48, 4}} How could I shuffle the order of presentation of those 192 items, maximizing the distance between identical item with regard to j the original stimuli number ?

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• Converting SQL with subselect in select to HQL

  - by UltraVi01

  I have the following SQL that I am having problems converting to HQL. A NPE is getting thrown -- which I think has something to do with the SUM function. Also, I'd like to sort on the subselect alias -- is this possible? SQL (subselect): SELECT q.title, q.author_id, (SELECT IFNULL(SUM(IF(vote_up=true,1,-1)), 0) FROM vote WHERE question_id = q.id) AS votecount FROM question q ORDER BY votecount DESC HQL (not working) SELECT q, (SELECT COALESCE(SUM(IF(v.voteUp=true,1,-1)), 0) FROM Vote v WHERE v.question = q) AS votecount FROM Question AS q LEFT JOIN q.author u LEFT JOIN u.blockedUsers ub WHERE q.dateCreated BETWEEN :week AND :now AND u.id NOT IN ( SELECT ub.blocked FROM UserBlock AS ub WHERE ub.blocker =:loggedInUser ) AND (u.blockedUsers IS EMPTY OR ub.blocked !=:loggedInUser) ORDER BY votecount DESC

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• Selecting previous and next row using sp

  - by davor

  I want to select previous and next row from table based on current id. I send current id to stored procedure and use this query: -- previous select top 1 id from table where id < @currentId order by id desc -- next select top 1 id from table where id < @currentId order by id asc The problem is when I send currentId which is the last id in the table and want to select next row. Then is nothing selected. Same problem for previous row, when I send currentId which is first id in table Is it possible to solve this in sql without additional queries?

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• accessing nth element (value) of a vector after sorting

  - by memC

  dear experts, This question is an extension of this question I asked. I have a std::vector vec_B.which stores instances of class Foo. The order of elements in this vector changes in the code. Now, I want to access the value of the current "last element" or current 'nth' element of the vector. If I use the code below to get the last element using getLastFoo() method, it doesn't return the correct value. For example, to begin with the last element of the vector has Foo.getNumber() = 9. After sorting it in descending order of num, for the last element, Foo.getNumber() = 0. But with the code below, it still returns 9.. that means it is still pointing to the original element that was the last element. What change should I make to the code below so that "lastFoo" points to the correct last element? class Foo { public: Foo(int i); ~Foo(){}; int getNum(); private: int num; }; Foo:Foo(int i){ num = i; } int Foo::getNum(){ return num; } class B { public: Foo* getLastFoo(); B(); ~B(){}; private: vector<Foo> vec_B; }; B::B(){ int i; for (i = 0; i< 10; i++){ vec_B.push_back(Foo(i)); } // Do some random changes to the vector vec_B so that elements are reordered. For // example rearrange elements in decreasing order of 'num' //... } Foo* B::getLastFoo(){ &vec_B.back(); }; int main(){ B b; Foo* lastFoo; lastFoo = b.getLastFoo() cout<<lastFoo->getNumber(); return 0; }

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• Using DispatcherUnhandledExceptionFilterEventArgs

  - by user341689

  I tried setting DispatcherUnhandledExceptionFilterEventArgs.RequestCatch to false in order to not call the UnhandledException event handler...but this doesnt work...could someone post an example of how to do this

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• Moving from an IT department to a proper technology company

  - by user2434

  I have been working with Java/web applications in an IT department of a retail company. As much as work goes, there is nothing much to say. Fixing couple of if/else loops, writing some simple business logic etc., is all what I have been doing. Having said that, I feel I have a good technical knowledge, and I am willing to move to companies like Microsoft/Google/Amazon etc., [I want to work in these places, because I feel I am a technical guy, and I am working in a place where most people freak out when the words like 'algorithm' are heard] I can of course prepare algorithms/computer science fundamentals etc.,(I hold a 4 year degree in computer science program) but beyond that, will my experience hold against me ? I doubt I'll even get a call from them seeing my work experience. What kind of questions(apart from the algorithm types) can I expect ?

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• upload multiple images, display thumbnails, manipulate image

  - by robert

  hy, i need a little help here i want to be able to upload multiple images after i upload all i want to display thumbnails, when i click on a thumb i want to be able to rotate the image (rotate the original image not only the thumb) All uploaded images i want to be in one php array, in the order they have been uploaded. Or if i can to change the order of the images, i know is possible with jQuery! how i can code this?? i started but i can't get this done! here is my project so far: http://www.mediafire.com/?3uzzgx5onzn any help is welcome! Thanks!

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• Dropdown list with a "Select All" option

  - by shawnboy

  I have three dropdown boxes, Region, District, and City. I want my District dropdown to have a "Select All" option so the user can get all Cities in the Region, else just display the City based on the selected District. My query looks like this: IF @district =-2 THEN (SELECT DISTINCT city FROM myTable WHERE RIGHT(Region, 3) = ?) ORDER BY city) ELSE (select DISTINCT city FROM myTable WHERE District = ?) Order by city I'm using vb.net/sql I couldn't find any complex case scenarios in my search either. Any sugguestions would be appreciated!

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