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• A report writer for non-programmers?

  - by Earlz

  Hello, we are wanting for users to be able to write their own reports in our application. It is a web application. We don't care if they must download an application in order to create reports, but we need for them to be able to print off reports from the web in PDF format or similar. The report writer is to be used by non-programmers, or at best very light programmers(like the ones that make VBA macros and such). (the writer is not a core part of the program though. So if there is a learning curve, then that is acceptable to a certain extent) We were looking at Crystal Reports but it seems like it'll cost $7000 which is just way too much for right now(though our system is very flexible so could support it eventually). We are also looking at Fast Reports which seems pretty promising, but I'm not sure the report writer would be easy for non-programmers to grasp. Can someone recommend a good report writer for non programmers that won't break the bank?

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• MDX Except function in where clause

  - by rfders

  Hi, i'm having problem restricting a query in mdx, using except function at where clause. i need to retrieved a set of data but which not in an specific set. Then i created the next query: select {[Measures].[Amount], [Measures].[Transaction Cost], [Measures].[Transaction Number]} ON COLUMNS,{[ManualProcessing].[All ManualProcessings].[MAGNETICSTRIPE], ManualProcessing].[All ManualProcessings].[MANUAL]} ON ROWS FROM [Transactions] where except([Product].[All Products].Children,{[Product].[All Products].[Debit}) apparently this works fine, but when i try to add another restriction to slicer, i got this error: No function matches signature (Set,Member). I'm currently working on mondrian 3.1 Is it possible to add multiple restriction to slicer when im sing the except funtion ? are there any other way to get this ? thanks in advance.

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• Django: Summing values of records grouped by foreign key

  - by Dan0

  Hi there In django, given the following models (slightly simplified), I'm struggling to work out how I would get a view including sums of groups class Client(models.Model): api_key = models.CharField(unique=True, max_length=250, primary_key=True) name = models.CharField(unique=True, max_length=250) class Purchase(models.Model): purchase_date = models.DateTimeField() client = models.ForeignKey(SavedClient, to_field='api_key') amount_to_invoice = models.FloatField(null=True) For a given month, I'd like to see e.g. April 2010 For Each Client that purchased this month: * CLient: Name * Total amount of Purchases for this month * Total cost of purchases for this month For each Purchase made by client: * Date * Amount * Etc I've been looking into django annotation, but can't get my head around how to sum values of a field for a particular group over a particular month and send the information to a template as a variable/tag. Any info would be appreciated

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• Proper Case Title Case Question

  - by Michael Quiles

  What am i doing wrong here? I want the users name to be shown in the output as propercase but I cant figure it out. string proper = this.xTripNameTextBox.Text; CultureInfo properCase = System.Threading.Thread.CurrentThread.CurrentCulture; TextInfo currentInfo = properCase.TextInfo; proper = currentInfo.ToTitleCase(proper); this.xTripOutputLabel.Text = proper + Environment.NewLine + "The total gallons you would use: " + Output.ToString("0") + Environment.NewLine + "Total amount it will cost you: " + Coutput.ToString("C") + Environment.NewLine +" Your customer number is " + rnd1.Next(1, 1000).ToString();

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• How to : required validator based on user role ASP.Net MVC 3

  - by user70909

  Hi, i have a form where i have the field "Real Cost" i want to customize its appearance and wither it should be validated based on user role. to be more clear is say the client want to show his field in the form or details page and also make it editable for users in Roles "Senior Sales, Manager" but not other roles, so can anyone please guide me of the best way ? should i write custom required validation based on user in role, and if so can you please provide the right implementation of it? some may tell me create custom model for this, but i think it would be hassle plus the Roles will be dynamic so it is not predefined set of roles. i hope i was clear enough

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• Labeling connections using Oracle Universal Connection Pool (UCP) doesn't seem to work

  - by sapporo

  I'm evaluating the Oracle Universal Connection Pool (UCP) included with their 11.2 JDBC driver, but cannot get the labeling functionality to work properly (which I'd like to use to minimize the amount of ALTER SESSION statements). I'm basically following their sample code to implement the ConnectionLabelingCallback interface. The callback method cost(Properties reqLabels, Properties currentLabels) is called as expected, so the callback seems to be configured correctly. However, the other callback method configure(Properties reqLabels, Object conn) is passed arguments that make it impossible to provide a meaningful implementation: reqLabels is always null, so the callback method has no way of knowing what labels need to be set. conn is of type oracle.jdbc.driver.T4CConnection, which cannot be cast to LabelableConnection, so the callback method has no way of inspecting or manipulating the labels attached to the connection. My code is running on Java 6 and using ojdbc6.jar and ucp.jar version 11.2.0.1.0. The database is actually 10.2, but that should not be a problem according to the docs, since the UCP functionality is completely implemented in the JDBC driver. Thanks in advance!

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• Long-running transactions structured approach

  - by disown

  I'm looking for a structured approach to long-running (hours or more) transactions. As mentioned here, these type of interactions are usually handled by optimistic locking and manual merge strategies. It would be very handy to have some more structured approach to this type of problem using standard transactions. Various long-running interactions such as user registration, order confirmation etc. all have transaction-like semantics, and it is both error-prone and tedious to invent your own fragile manual roll-back and/or time-out/clean-up strategies. Taking a RDBMS as an example, I realize that it would be a major performance cost associated with keeping all the transactions open. As an alternative, I could imagine having a database supporting two isolation levels/strategies simultaneously, one for short-running and one for long-running conversations. Long-running conversations could then for instance have more strict limitations on data access to facilitate them taking more time (read-only semantics on some data, optimistic locking semantics etc). Are there any solutions which could do something similar?

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• Singleton again, but with multi-thread and Objective-C

  - by Tonny Xu

  I know Singleton pattern has been discussed so much. But because I'm not fully understand the memory management mechanism in Objective-C, so when I combined Singleton implementation with multithreading, I got a big error and cost me a whole day to resolve it. I had a singleton object, let's call it ObjectX. I declared an object inside ObjectX that will detach a new thread, let's call that object objectWillSpawnNewThread, when I called [[ObjectX sharedInstance].objectWillSpawnNewThread startNewThread]; The new thread could not be executed correctly, and finally I found out that I should not declare the object objectWillSpawnNewThread inside the singleton class. Here are my questions: How does Objective-C allocate static object in the memory? Where does Objective-C allocate them(Main thread stack or somewhere else)? Why would it be failed if we spawn a new thread inside the singleton object? I had searched the Objective-C language [ObjC.pdf] and Objective-C memory management document, maybe I missed something, but I currently I could not find any helpful information.

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• What is the performance hit of enabling sessions on Google App Engine?

  - by Spines

  What is the performance hit of enabling sessions on the Google App Engine? I just turned on <sessions-enabled>true</sessions-enabled> in my Google App Engine app and now my requests are consistently using 100 more ms of CPU time than before I enabled it. It also makes the user wait an additional 100ms for the server to respond on each request. This seems to be quite a significant cost, I'm not even calling getSession or using it in any way yet and it still adds this extra latency. Is there something I can do to speed this up?

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• Free Large datasets to experiment with Hadoop

  - by Sundar

  Do you know any large datasets to experiment with Hadoop which is free/low cost? Any pointers/links related is appreciated. Prefernce: Atleast one GB of data. Production log data of webserver. Few of them which I found so far: http://dumps.wikimedia.org/enwiki/20100130/ http://wiki.freebase.com/wiki/Data_dumps http://aws.amazon.com/publicdatasets/ Also can we run our own crawler to gather data from sites e.g. Wikipedia? Any pointers on how to do this is appreciated as well.

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• Upload large files in .NET

  - by Austin

  I've done a good bit of research to find an upload component for .NET that I can use to upload large files, has a progress bar, and can resume the upload of large files. I've come across some components like AjaxUploader, SlickUpload, and PowUpload, to name a few. Each of these options cost money and only PowUpload does the resumable upload, but it does it with a java applet. I'm willing to pay for a component that does those things well, but if I could write it myself that would be best. I have two questions: Is it possible to resume a file upload on the client without using flash/java/Silverlight? Does anyone have some code or a link to an article that explains how to write a .NET HTTPHandler that will allow streaming upload and an ajax progress bar? Thank you, Austin [Edit] I realized I do need to be able to do resumable file uploads for my project, any suggestions for components that can do that?

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• Education After High School

  - by Travis O.

  I know this isn't specifically a programming question, but please bear with me. I'm currently a high-school junior. I have no idea what to look for in a college: what degree, what school, etc. I've searched all around the internet but can't really find anything that relevant. I know I need a degree, but I don't know which or what to specialize in. My grades are good and I am in the top 15 percent of my class. I scored about a 1800 on the SAT and have not yet taken the ACT. I'd like to go to a 4 year school that doesn't cost too much. What do I need to be looking for and what is important to colleges accepting CS students and the business after college?

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• free geolocation geoip, are they viable?

  - by brett

  I'm trying to get a visitor's location based on their IP, pretty common stuff. My research so far shows that there's a database from MaxMind that costs $370 + $90/month... not the type of cost I can afford. Then there's a free version called GeoLite City. Anyone used these before? Drop a quick line here please. Why is one free and the answer so expensive. Is the free one usable, is it not as accurate, what's the catch? P.S. Any other suggestions are welcome.

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• Does Windows Azure support the Application Warm-Up module or something similar?

  - by Corey O'Brien

  We have a Web Role that we are hosting in Windows Azure that uses an old ASMX based Web Reference to contact an external system. The Web Reference proxy code is big enough that instantiating it the first time has a significant cost. We'd like to be able to have this run when the Web Role starts instead of on the first request. I know IIS 7.5 has an Application Warm-Up module that would allow us to achieve this, but I'm having trouble figuring out if something similar exists with hosting on Windows Azure. Thanks, Corey

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• What's the best value for money c# code protection for a single developer

  - by Cliff Cawley

  What's the best value for money c# code protection? Some just use obfuscation, others add win32 wrapping, some cost a fortune. So far I've come up with http://www.eziriz.com/ who's Intellilock looks promising. Any other suggestions? Any reasons why this is not a good idea? I know its impossible to completely protect but I'd prefer the ability to protect my code so that it would require a lot of effort in order to recover it. I do hope to sell my products eventually, while also releasing some for free.

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• Magento Checkout options

  - by graham barnes

  Hi I want to add some options to my magento, lets say i print on clothing, a customer buys some t-shirts, shirts and jackets from me, it totals to £60+ VAT on the checkout area where i signup and not before I need to add an option where I can add a text box and upload option, can i do this? I ideally then want to add some pricing options if the user has chosen to add some branding to a product or multiple products e.g. if the branding was on the top right of the shirt it will cost £5.00, if on the back it costs £7.00 etc all if possible to be done via the admincp. I also want an option so when they upload their logo for the first time they are charged a one off charge, like a setup fee but If the customer has allready sent in there logo then no charge applies. thanks Graham

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• Open source alternative to WebEx WebOffice?

  - by Dieseltime

  I have a client who has been using WebOffice (from WebEx) for a variety of tasks within their small organization. The problem is that they only really need a small subset of the features WebOffice provides (Contact list, Database, and Document Storage). They've asked me to develop a website focused on these three features with the rationalization that this should be more cost-effective, since they currently aren't using many of the features of WebOffice they pay for. What are some open-source alternatives that I could implement for them? Sharepoint sounds like it would be too bloated and Google Apps may not be as collaborative as they would like.

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• Is it worthwhile to implement observer pattern in PHP?

  - by Extrakun

  I have been meaning to make use of design pattern in PHP, such as the observer pattern, but that I have to recreate the observers' relationship each time the page is loaded pains me. As references are saved as a new concrete objects in session, there is no way to preserve relationships between subscribers and their observers unless you use a GUID or some other properties to form a lookup, and store that property instead. With the cost of recreating the relationships each time a page is loaded, is it worthwhile to use design patterns such as observers in PHP, compared to having a clean design? Any real-world experience to share?

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• DotnetNuke redirect

  - by X-Dev

  our client needs to shortcuts to particular pages We need to redirect non existent urls like http://site.com/promotion1 to the actual URL similar to http://site.com/promotions/promotion1/tabid/799/language/en-AU/Default.aspx ... I've sent a list of appropriate DNN modules to our client but it may take them forever to get back to me. In the mean time they still submitting requests to us to create redirects for them. if there's no cost involved then i wont have to wait for them to get back to me. so I'm looking for a Quick and free way to enable the clients to set these up on this own. I've looked at: http://www.snowcovered.com/snowcovered2/Default.aspx?tabid=242&PackageID=3302 http://www.ventrian.com/Resources/Projects/FriendlyUrls.aspx http://www.codeproject.com/kb/aspnet/dnn2url_rewrite.aspx But haven't had much luck in the small amount of time i have available. Has anyone got some suggestions on how to achieve our goal with either the above resources or maybe some additional resource i haven't found yet? (DNN v4.9)

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• Can you recommend an effective and cheap CDN for video streaming?

  - by Shaul Dar

  I am looking for a streaming CDN recommendation. Cost and performance are my chief concerns. Video viewers may be all over the globe, with the, US, Europe, Russia and South America topping the list (yes, I know that leaves out a little :-). I saw the following list of streaming CDNs in LinkedIn: Akamai, BitGravity, EdgeCast, Highwinds, Internap, Level3, Limelight, Mirror Image, Move Networks, Qbrick, SimpleCDN, StreamZilla, Swarmcast (streaming via HTTP), WINK Streaming... (+Amazon's S3 and CloudFront) Can anyone recommend any of these or others? Or a different type of technology (e.g. P2P).

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• How-to limit feature functionality

  - by ph0enix

  Are there any standard or "best practice" ways of limiting feature functionality for a particular application? Example: We have a product with a variety of features, and our customers can pick and choose which features they would like to use, and the cost of the product varies based on which features they are actually using. In the past, we have distributed along with our software installer an encrypted license file that contains information about the customer, as well as the collection of features that they have enabled. In code, we read from the license file and enable the functionality according to the license file. This seems to work fine, except there a few disadvantages: Upgrading users with new functionality can be sort of a pain If a particular feature shows up in multiple places throughout the application, a developer might not realize that this feature should be licensed, and forget to check the license file before granting functionality to the user If the license file becomes corrupted, deleted, moved, renamed, etc. the application will not run We're getting ready to roll out a new set of features, and I was just curious what others in the community have done to tackle this problem?

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• Mobile development decision - Future wise (Iphone,android,symbian)

  - by Idan

  Hi, I would like to learn mobile development, but I'm not sure which category would be the most cost effective one. I know it's kind of a prophecy question, but anyhow, suggestions would be welcomed. So, as i'm pretty familiar with C++ development , I though about learning QT. I understand that using QT, I can develop once and then deploy to symbian,Mee-go, and of course to windows, linux and more. (does that mean I won't have to lean each OS internal calls, and just learn the QT library ? ) Learning development for android , mean I will have to learn Java, which is not my preferred way of action right now. Another option is to learn Objective-C, but as it only apply to Iphone development, I think it's a pretty narrow zone for me. I want to learn a library, which would be a wise decision career wise. Any recommendations ?

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• Isn't INT more efficient than UNIQUEIDENTIFIER?

  - by ck

  I have a parent table and child table where the columns that join them together are the UNIQUEIDENTIFIER type. The child table has a clustered index on the column that joins it to the parent table (its PK, which is also clustered). I have created a copy of both of these tables but changed the relationship columns to be INTs instead, have rebuilt the indexes so that they are essentially the same structure and can be queried in the same way. When I query for a known 20 records from the parent table, pulling in all the related records from the child tables, I get identical query costs across both, i.e. 50/50 cost for the batches. If this is true, then my giant project to change all of the tables like this appears to be pointless, other than speeding up inserts. Can anyone provide any light on the situation?

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• HBase schema help

  - by Jody Powlette

  Coming from a SQL Server background, I'm a newbie with regard to HBase, but the technology looks to be a good fit for what we're doing and the cost is definitely right! I need to maintain a list of log entries which normally I would create in an RDBS as: create table Log ( UserID int, SiteID int, Page varchar(50), Date smalldatetime ) where one user may have 0 or 1000 rows in this simple table. Typical queries would be to find all the rows for one user or all the rows for one user on one site. How does this translate into a "map" in HBase where there is no "row key" AND the same (SiteID,Page) may appear many times. My first thought is that UserID is a row key, but I still don't understand "column families" and the other terminology well enough to understand how to setup the table to hold this data where the one UserID can have many (SiteID,Page,Date) "rows". Any direction is appreciated!

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• Slow SelectSingleNode

  - by Simon

  I have a simple structured XML file like this: <ttest ID="ttest00001", NickName="map00001"/> <ttest ID="ttest00002", NickName="map00002"/> <ttest ID="ttest00003", NickName="map00003"/> <ttest ID="ttest00004", NickName="map00004"/> ..... This xml file can be around 2.5MB. In my source code I will have a loop to get nicknames In each loop, I have something like this: nickNameLoopNum = MyXmlDoc.SelectSingleNode("//ttest[@ID=' + testloopNum + "']").Attributes["NickName"].Value This single line will cost me 30 to 40 millisecond. I searched some old articles (dated back to 2002) saying, use some sort of compiled "xpath" can help the situation, but that was 5 years ago. I wonder is there a mordern practice to make it faster? (I'm using .NET 3.5)

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