fixed point - Page 657 - Developer IT

How to calculate bandwidth consumption for a Hosting Account using C# in ASP.Net Application?

- by Steve Johnson

HI all, I am working on SaaS Hosting Software. a large number of sites are hosted on the server. I am trying to calculate bandwidth consumption, (bytes transferred in and out) using C#, described Here using the MS Log Parser. In the above case, if the log files are deleted by the user or any administrator even, the bandwidth calculation will not be possible. Q1: *What is the standard way to measure the Bandwidth for various Hosting accounts (of websites) on a single server?* Q2: *If Log parser mechanism (as described above) is used, then how to take care of the security issue? Is there some system directory or event viewer logs or something which cannot be deleted except by the System account and contains bandwidth data?* Please point me in the right direction. Thanks

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science.js’s loess() output is identical to input

- by user3710111

Rendered project available here. The line is supposed to be a trend line (as rendered with LOESS), but it merely follows each data point instead. I am no stats wonk, so maybe it makes sense that a LOESS function’s output would match the input as seen in the above example, but it strikes me as being wrong. Here is the relevant bit of code: var loess = science.stats.loess().bandwidth(.2); var xVal = data.map(function(d) { return d.date; }); var yVal = data.map(function(d) { return d.A; }); var loessData = loess([xVal], [yVal])[0]; console.log(yVal); console.log(loessData);

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perl TemplateToolkit - Can't locate object method "new" via package

- by simnom

Hi, I have inherited a web project that is perl based and I'm attempting to set up a local testing server so changes can be made internally to the project. The server architecture Ubuntu 9.10 php 5.2.10 mysql 5.1.37 perl 5.10.0-24ubuntu4 All the dependent modules and packages are installed such as DateTime.pm, TemplateToolkit.pm but running the application throws the following error message: Can't locate object method "new" via package "Template" (perhaps you forgot to load "Template"?) at ../lib//KPS/TemplateToolkit.pm line 51 The code block that this refers to is: sub new { return Template->new( INCLUDE_PATH => $KPS::Config::templatepath, ABSOLUTE => 1, DEBUG => 1, ); } If anybody is able to shed any light on this or point me in the right direction it would be greatly appreciated. Thanks Simnom

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Class member functions instantiated by traits

- by Jive Dadson

I am reluctant to say I can't figure this out, but I can't figure this out. I've googled and searched Stack Overflow, and come up empty. The abstract, and possibly overly vague form of the question is, how can I use the traits-pattern to instantiate non-virtual member functions? The question came up while modernizing a set of multivariate function optimizers that I wrote more than 10 years ago. The optimizers all operate by selecting a straight-line path through the parameter space away from the current best point (the "update"), then finding a better point on that line (the "line search"), then testing for the "done" condition, and if not done, iterating. There are different methods for doing the update, the line-search, and conceivably for the done test, and other things. Mix and match. Different update formulae require different state-variable data. For example, the LMQN update requires a vector, and the BFGS update requires a matrix. If evaluating gradients is cheap, the line-search should do so. If not, it should use function evaluations only. Some methods require more accurate line-searches than others. Those are just some examples. The original version instantiates several of the combinations by means of virtual functions. Some traits are selected by setting mode bits that are tested at runtime. Yuck. It would be trivial to define the traits with #define's and the member functions with #ifdef's and macros. But that's so twenty years ago. It bugs me that I cannot figure out a whiz-bang modern way. If there were only one trait that varied, I could use the curiously recurring template pattern. But I see no way to extend that to arbitrary combinations of traits. I tried doing it using boost::enable_if, etc.. The specialized state information was easy. I managed to get the functions done, but only by resorting to non-friend external functions that have the this-pointer as a parameter. I never even figured out how to make the functions friends, much less member functions. The compiler (VC++ 2008) always complained that things didn't match. I would yell, "SFINAE, you moron!" but the moron is probably me. Perhaps tag-dispatch is the key. I haven't gotten very deeply into that. Surely it's possible, right? If so, what is best practice? UPDATE: Here's another try at explaining it. I want the user to be able to fill out an order (manifest) for a custom optimizer, something like ordering off of a Chinese menu - one from column A, one from column B, etc.. Waiter, from column A (updaters), I'll have the BFGS update with Cholesky-decompositon sauce. From column B (line-searchers), I'll have the cubic interpolation line-search with an eta of 0.4 and a rho of 1e-4, please. Etc... UPDATE: Okay, okay. Here's the playing-around that I've done. I offer it reluctantly, because I suspect it's a completely wrong-headed approach. It runs okay under vc++ 2008. #include <boost/utility.hpp> #include <boost/type_traits/integral_constant.hpp> namespace dj { struct CBFGS { void bar() {printf("CBFGS::bar %d\n", data);} CBFGS(): data(1234){} int data; }; template<class T> struct is_CBFGS: boost::false_type{}; template<> struct is_CBFGS<CBFGS>: boost::true_type{}; struct LMQN {LMQN(): data(54.321){} void bar() {printf("LMQN::bar %lf\n", data);} double data; }; template<class T> struct is_LMQN: boost::false_type{}; template<> struct is_LMQN<LMQN> : boost::true_type{}; struct default_optimizer_traits { typedef CBFGS update_type; }; template<class traits> class Optimizer; template<class traits> void foo(typename boost::enable_if<is_LMQN<typename traits::update_type>, Optimizer<traits> >::type& self) { printf(" LMQN %lf\n", self.data); } template<class traits> void foo(typename boost::enable_if<is_CBFGS<typename traits::update_type>, Optimizer<traits> >::type& self) { printf("CBFGS %d\n", self.data); } template<class traits = default_optimizer_traits> class Optimizer{ friend typename traits::update_type; //friend void dj::foo<traits>(typename Optimizer<traits> & self); // How? public: //void foo(void); // How??? void foo() { dj::foo<traits>(*this); } void bar() { data.bar(); } //protected: // How? typedef typename traits::update_type update_type; update_type data; }; } // namespace dj int main_() { dj::Optimizer<> opt; opt.foo(); opt.bar(); std::getchar(); return 0; }

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How can I install xpdf on a Godaddy Linux shared hosting server?

- by Andrew

I'm having trouble determining if it's possible, based on the amount of access I have to my Godaddy server, to install XPDF. Could someone shed some light on this? Here's the link to XPDF. And here is info about the GoDaddy server. My goal is to convert PDF's to Plain Text automatically using a PHP script on the server. So far, other solutions like code posted in the comments of the PHP website have been insufficient. All research seems to point to XPDF.

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Using SQL Source Control with Fortress or Vault – Part 1

- by AjarnMark

I am fanatical when it comes to managing the source code for my company. Everything that we build (in source form) gets put into our source control management system. And I’m not just talking about the UI and middle-tier code written in C# and ASP.NET, but also the back-end database stuff, which at times has been a pain. We even script out our Scheduled Jobs and keep a copy of those under source control. The UI and middle-tier stuff has long been easy to manage as we mostly use Visual Studio which has integration with source control systems built in. But the SQL code has been a little harder to deal with. I have been doing this for many years, well before Microsoft came up with Data Dude, so I had already established a methodology that, while not as smooth as VS, nonetheless let me keep things well controlled, and allowed doing my database development in my tool of choice, Query Analyzer in days gone by, and now SQL Server Management Studio. It just makes sense to me that if I’m going to do database development, let’s use the database tool set. (Although, I have to admit I was pretty impressed with the demo of Juneau that Don Box did at the PASS Summit this year.) So as I was saying, I had developed a methodology that worked well for us (and I’ll probably outline in a future post) but it could use some improvement. When Solutions and Projects were first introduced in SQL Management Studio, I thought we were finally going to get our same experience that we have in Visual Studio. Well, let’s say I was underwhelmed by Version 1 in SQL 2005, and apparently so were enough other people that by the time SQL 2008 came out, Microsoft decided that Solutions and Projects would be deprecated and completely removed from a future version. So much for that idea. Then I came across SQL Source Control from Red-Gate. I have used several tools from Red-Gate in the past, including my favorites SQL Compare, SQL Prompt, and SQL Refactor. SQL Prompt is worth its weight in gold, and the others are great, too. Earlier this year, we upgraded from our earlier product bundles to the new Developer Bundle, and in the process added SQL Source Control to our collection. I thought this might really be the golden ticket I was looking for. But my hopes were quickly dashed when I discovered that it only integrated with Microsoft Team Foundation Server and Subversion as the source code repositories. We have been using SourceGear’s Vault and Fortress products for years, and I wholeheartedly endorse them. So I was out of luck for the time being, although there were a number of people voting for Vault/Fortress support on their feedback forum (as did I) so I had hope that maybe next year I could look at it again. But just a couple of weeks ago, I was pleasantly surprised to receive notice in my email that Red-Gate had an Early Access version of SQL Source Control that worked with Vault and Fortress, so I quickly downloaded it and have been putting it through its paces. So far, I really like what I see, and I have been quite impressed with Red-Gate’s responsiveness when I have contacted them with any issues or concerns that I have had. I have had several communications with Gyorgy Pocsi at Red-Gate and he has been immensely helpful and responsive. I must say that development with SQL Source Control is very different from what I have been used to. This post is getting long enough, so I’ll save some of the details for a separate write-up, but the short story is that in my regular mode, it’s all about the script files. Script files are King and you dare not make a change to the database other than by way of a script file, or you are in deep trouble. With SQL Source Control, you make your changes to your development database however you like. I still prefer writing most of my changes in T-SQL, but you can also use any of the GUI functionality of SSMS to make your changes, and SQL Source Control “manages” the script for you. Basically, when you first link your database to source control, the tool generates scripts for every primary object (tables and their indexes are together in one script, not broken out into separate scripts like DB Projects do) and those scripts are checked into your source control. So, if you needed to, you could still do a GET from your source control repository and build the database from scratch. But for the day-to-day work, SQL Source Control uses the same technique as SQL Compare to determine what changes have been made to your development database and how to represent those in your repository scripts. I think that once I retrain myself to just work in the database and quit worrying about having to find and open the right script file, that this will actually make us more efficient. And for deployment purposes, SQL Source Control integrates with the full SQL Compare utility to produce a synchronization script (or do a live sync). This is similar in concept to Microsoft’s DACPAC, if you’re familiar with that. If you are not currently keeping your database development efforts under source control, definitely examine this tool. If you already have a methodology that is working for you, then I still think this is worth a review and comparison to your current approach. You may find it more efficient. But remember that the version which integrates with Vault/Fortress is still in pre-release mode, so treat it with a little caution. I have found it to be fairly stable, but there was one bug that I found which had inconvenient side-effects and could have really been frustrating if I had been running this on my normal active development machine. However, I can verify that that bug has been fixed in a more recent build version (did I mention Red-Gate’s responsiveness?).

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How to add a pulldown button in a view's toolbar?

- by madgnome

I need to add a pulldown button to a view's toolbar in an Eclipse plugin. Actually buttons in the toolbar are added like that : <extension point="org.eclipse.ui.viewActions"> <viewContribution id="..." targetId="$MyViewId$"> <action id="..." toolbarPath="action1" class="Class extending Action and implementing IViewActionDelegate"> </action> </viewContribution> </extension>

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C++ namespace alias and forward declaration

- by Dave

I am using a C++ third party library that places all of its classes in a versioned namespace, let's call it tplib_v44. They also define a generic namespace alias: namespace tplib = tplib_v44; If a forward-declare a member of the library in my own .h file using the generic namespace... namespace tplib { class SomeClassInTpLib; } ... I get compiler errors on the header in the third-party library (which is being included later in my .cpp implementation file): error C2386: 'tplib' : a symbol with this name already exists in the current scope If I use the version-specific namespace, then everything works fine, but then ... what's the point? What's the best way to deal with this?

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Cabal: Odd Error Message + Lack of Documentation

- by voxcogitatio

So I recently installed cabal (from the default binary of ArchLinux). I then tried to upgrade cabal as a user: cabal upgrade Cabal --user --prefix=$USER Resolving dependencies... cabal: fromFlag NoFlag. Use fromFlagOrDefault What I've already done: Googled the error message. Turned up the cabal source and little else. Looked at haskell-wiki on cabal-install. Looked through this guide. So basically I'm wondering: What's up with the error message? Could anyone point me in the direction of a cabal tutorial?

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NServiceBus persisting subscriptions in Pub/Sub sample

- by Bogdan Nedelcu

I want to figure out how I to set up the Pub/Sub sample from NServiceBus to work in the case of publisher malfunction. When I start the samples and accidentaly close the Subscribers, if I restart everything works fine. If however I kill the publisher and the subscriptions continue to work, if I restart the publisher, then it doesn't seem to know it has subscribers and doesn't post any messages. I added the config entry <MsmqSubscriptionStorageConfig Queue="subscriptions"/> but it seems to not function... I miss something. I googled about MsmqSubscriptionStorageConfig and DbSubscriptionStorageConfig but i didn't find a solution. Could someone point me in the right direction ?

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Divs being hidden behind content, need to push it down.

- by wilwaldon

I'm pretty much at wits end right about now and can't seem to figure out why my divs aren't pushing content down on the page. If you go to http://www.wilwaldon.com/itsbroken/template.php you'll notice that the thumbnails on the right side are getting hidden behind the content below them. I'd like the thumbnails to push the bottom content down as opposed to being behind it. Any help would be greatly appreciated and you'd pretty much save my brain from exploding at this point. Thank you in advance!

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Maven SVN checkout example

- by c0mrade

Concerning my previous question - http://stackoverflow.com/questions/2622191/is-there-a-svn-maven , I went trough usage page - http://maven.apache.org/scm/maven-scm-plugin/usage.html didn't found quite what I was looking for, here what I would like to do : Checkout list of projects which I specify for ex : http://mysvnurl/myprojectname where I could parametrize the project name Then lets say if there is 3-4 or n number of sub-projects(modules)(for which I can specify the names as well) that I want to checkout, and that I could specify branch(trunk) and revision. To simplify : Checkout certain sub-projects(modules) trunk of myprojectname Ex : http://mysvnurl/myprojectname/project1/trunk/* // get everything http://mysvnurl/myprojectname/project2/trunk/* // get everything How would I do that with maven, can someone with more expirience explain how to do this or point me to somewhere where I can read how to, I've googled nothing specific to my needs. Thank you

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Monitoring your WCF Web Apis with AppFabric

- by cibrax

The other day, Ron Jacobs made public a template in the Visual Studio Gallery for enabling monitoring capabilities to any existing WCF Http service hosted in Windows AppFabric. I thought it would be a cool idea to reuse some of that for doing the same thing on the new WCF Web Http stack. Windows AppFabric provides a dashboard that you can use to dig into some metrics about the services usage, such as number of calls, errors or information about different events during a service call. Those events not only include information about the WCF pipeline, but also custom events that any developer can inject and make sense for troubleshooting issues. This monitoring capabilities can be enabled on any specific IIS virtual directory by using the AppFabric configuration tool or adding the following configuration sections to your existing web app, <system.serviceModel> <serviceHostingEnvironment aspNetCompatibilityEnabled="true" multipleSiteBindingsEnabled="true" /> <diagnostics etwProviderId="3e99c707-3503-4f33-a62d-2289dfa40d41"> <endToEndTracing propagateActivity="true" messageFlowTracing="true" /> </diagnostics> <behaviors> <serviceBehaviors> <behavior name=""> <etwTracking profileName="EndToEndMonitoring Tracking Profile" /> </behavior> </serviceBehaviors> </behaviors> </system.serviceModel> <microsoft.applicationServer> <monitoring> <default enabled="true" connectionStringName="ApplicationServerMonitoringConnectionString" monitoringLevel="EndToEndMonitoring" /> </monitoring> </microsoft.applicationServer> Bad news is that none of the configuration above can be easily set on code by using the new configuration model for WCF Web stack. A good thing is that you easily disable it in the configuration when you no longer need it, and also uses ETW, a general-purpose and high-speed tracing facility provided by the operating system (it’s part of the windows kernel). By adding that configuration section, AppFabric will start monitoring your service automatically and providing some basic event information about the service calls. You need some custom code for injecting custom events in the monitoring data. What I did here is to copy and refactor the “WCFUserEventProvider” class provided as sample in the Ron’s template to make it more TDD friendly when using IoC. I created a simple interface “ILogger” that any service (or resource) can use to inject custom events or monitoring information in the AppFabric database. public interface ILogger { bool WriteError(string name, string format, params object[] args); bool WriteWarning(string name, string format, params object[] args); bool WriteInformation(string name, string format, params object[] args); } The “WCFUserEventProvider” class implements this interface by making possible to send the events to the AppFabric monitoring database. The service or resource implementation can receive an “ILogger” as part of the constructor. [ServiceContract] [Export] public class OrderResource { IOrderRepository repository; ILogger logger; [ImportingConstructor] public OrderResource(IOrderRepository repository, ILogger logger) { this.repository = repository; this.logger = logger; } [WebGet(UriTemplate = "{id}")] public Order Get(string id, HttpResponseMessage response) { var order = this.repository.All.FirstOrDefault(o => o.OrderId == int.Parse(id, CultureInfo.InvariantCulture)); if (order == null) { response.StatusCode = HttpStatusCode.NotFound; response.Content = new StringContent("Order not found"); } this.logger.WriteInformation("Order Requested", "Order Id {0}", id); return order; } } The example above uses “MEF” as IoC for injecting a repository and the logger implementation into the service. You can also see how the logger is used to write an information event in the monitoring database. The following image illustrates how the custom event is injected and the information becomes available for any user in the dashboard. An issue that you might run into and I hope the WCF and AppFabric teams fixed soon is that any WCF service that uses friendly URLs with ASP.NET routing does not get listed as a available service in the WCF services tab in the AppFabric console. The complete example is available to download from here.

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Using python to play two sine tones at once

- by Alex

I'm using python to play a sine tone. The tone is based off the computer's internal time in minutes, but I'd like to simultaneously play one based off the second for a harmonized or dualing sound. This is what I have so far; can someone point me in the right direction? from struct import pack from math import sin, pi import time def au_file(name, freq, dur, vol): fout = open(name, 'wb') # header needs size, encoding=2, sampling_rate=8000, channel=1 fout.write('.snd' + pack('>5L', 24, 8*dur, 2, 8000, 1)) factor = 2 * pi * freq/8000 # write data for seg in range(8 * dur): # sine wave calculations sin_seg = sin(seg * factor) fout.write(pack('b', vol * 127 * sin_seg)) fout.close() t = time.strftime("%S", time.localtime()) ti = time.strftime("%M", time.localtime()) tis = float(t) tis = tis * 100 tim = float(ti) tim = tim * 100 if __name__ == '__main__': au_file(name='timeSound1.au', freq = tim, dur=1000, vol=1.0) import os os.startfile('timeSound1.au')

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Dot Net Nuke - Sub Domains

- by Tristan

Hi Guys, I've got a DNN portal set up for me and my brother, which works, and i'd like to make it so that sub domains point to our respective sub section of the sites. I.e. brothers.co.uk = brothers.co.uk/home.aspx me.brothers.co.uk = brothers.co.uk/me.aspx him.brothers.co.uk = brothers.co.uk/him.aspx I've got the sub sections set up in DNN, but can't figure out what to do with domain names to get it working. I'd like this to be all one site with the same login set, although if there's a better way to structure this, I'm open to ideas. Any thoughts? Regards Tristan

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Recommendations for 'C' Project architecture guidlines?

- by SiegeX

Now that I got my head wrapped around the 'C' language to a point where I feel proficient enough to write clean code, I'd like to focus my attention on project architecture guidelines. I'm looking for a good resource that coves the following topics: How to create an interface that promotes code maintainability and is extensible for future upgrades. Library creation guidelines. Example, when should I consider using static vs dynamic libraries. How to properly design an ABI to cope with either one. Header files: what to partition out and when. Examples on when to use 1:1 vs 1:many .h to .c Anything you feel I missed but is important when attempting to architect a new C project. Ideally, I'd like to see some example projects ranging from small to large and see how the architecture changes depending on project size, function or customer. What resource(s) would you recommend for such topics? Thanks

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Visual C# GUI Designer basic tutorial

- by cusack

Hi, can you recommend a Visual C# Form Designer tutorial that is targeted at experienced programmers who have at least a basic knowledge of C# but are new to the VS C# Form Designer. At least it shouldn't be targeted at programming newbs, like Introduction to Visual C# 2008 Express Edition (it explains how a comment looks like in C#). So far I've found C# Programming Tutorial - Programming Winforms in C# on stackoverflow. Wishlist: ;-) I'm more interested in focus on the designer itself rather than an explanation of single gui-elements. In other words explaining separation between generated-code, what to not edit manually (visual-c#-designer-responsibility) and on the other hand the parts for which the programmer himself is responsible. So a little more abstract best-practice point of view pointing out some caveats would be great as well. I would prefer text over video as well, but that's minor. /Wishlist Perhaps even a Microsoft reference specific to the Visual c# forms designer (which I seem to have been unable to find) would be helpful.

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asp.net mvc json 2 times post to the controller

- by mazhar kaunain baig

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MIT vs. BSD vs. Dual License

- by ryanve

My understanding is that: MIT-licensed projects can be used/redistributed in BSD-licensed projects. BSD-licensed projects can be used/redistributed in MIT-licensed projects. The MIT and the BSD 2-clause licenses are essentially identical. BSD 3-clause = BSD 2-clause + the "no endorsement" clause Issuing a dual license allows users to choose from those licenses—not be bound to both. If all of the above is correct, then what is the point of using a dual MIT/BSD license? Even if the BSD refers to the 3-clause version, then can't a user legally choose to only abide by the MIT license? It seems that if you really want the "no endorsement" clause to apply then you have to license it as just BSD (not dual). If you don't care about the "no endorsement" clause, then MIT alone is sufficient and MIT/BSD is redundant. Similarly, since the MIT and BSD licenses are both "GPL-compatible" and can be redistributed in GPL-licensed projects, then dual licensing MIT/GPL also seems redundant.

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SQL SERVER – ?Finding Out What Changed in a Deleted Database – Notes from the Field #041

- by Pinal Dave

[Note from Pinal]: This is a 41th episode of Notes from the Field series. The real world is full of challenges. When we are reading theory or book, we sometimes do not realize how real world reacts works and that is why we have the series notes from the field, which is extremely popular with developers and DBA. Let us talk about interesting problem of how to figure out what has changed in the DELETED database. Well, you think I am just throwing the words but in reality this kind of problems are making our DBA’s life interesting and in this blog post we have amazing story from Brian Kelley about the same subject. In this episode of the Notes from the Field series database expert Brian Kelley explains a how to find out what has changed in deleted database. Read the experience of Brian in his own words. Sometimes, one of the hardest questions to answer is, “What changed?” A similar question is, “Did anything change other than what we expected to change?” The First Place to Check – Schema Changes History Report: Pinal has recently written on the Schema Changes History report and its requirement for the Default Trace to be enabled. This is always the first place I look when I am trying to answer these questions. There are a couple of obvious limitations with the Schema Changes History report. First, while it reports what changed, when it changed, and who changed it, other than the base DDL operation (CREATE, ALTER, DELETE), it does not present what the changes actually were. This is not something covered by the default trace. Second, the default trace has a fixed size. When it hits that size, the changes begin to overwrite. As a result, if you wait too long, especially on a busy database server, you may find your changes rolled off. But the Database Has Been Deleted! Pinal cited another issue, and that’s the inability to run the Schema Changes History report if the database has been dropped. Thankfully, all is not lost. One thing to remember is that the Schema Changes History report is ultimately driven by the Default Trace. As you may have guess, it’s a trace, like any other database trace. And the Default Trace does write to disk. The trace files are written to the defined LOG directory for that SQL Server instance and have a prefix of log_: Therefore, you can read the trace files like any other. Tip: Copy the files to a working directory. Otherwise, you may occasionally receive a file in use error. With the Default Trace files, if you ask the question early enough, you can see the information for a deleted database just the same as any other database. Testing with a Deleted Database: Here’s a short script that will create a database, create a schema, create an object, and then drop the database. Without the database, you can’t do a standard Schema Changes History report. CREATE DATABASE DeleteMe; GO USE DeleteMe; GO CREATE SCHEMA Test AUTHORIZATION dbo; GO CREATE TABLE Test.Foo (FooID INT); GO USE MASTER; GO DROP DATABASE DeleteMe; GO This sets up the perfect situation where we can’t retrieve the information using the Schema Changes History report but where it’s still available. Finding the Information: I’ve sorted the columns so I can see the Event Subclass, the Start Time, the Database Name, the Object Name, and the Object Type at the front, but otherwise, I’m just looking at the trace files using SQL Profiler. As you can see, the information is definitely there: Therefore, even in the case of a dropped/deleted database, you can still determine who did what and when. You can even determine who dropped the database (loginame is captured). The key is to get the default trace files in a timely manner in order to extract the information. If you want to get started with performance tuning and database security with the help of experts, read more over at Fix Your SQL Server. Reference: Pinal Dave (http://blog.sqlauthority.com)Filed under: Notes from the Field, PostADay, SQL, SQL Authority, SQL Query, SQL Security, SQL Server, SQL Tips and Tricks, T SQL

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How define charset for HTMLhelp?

- by Oleg Svechkarenko

My C++ windows program uses htmlhelp. Structure HH_POPUP includes field pszFont in format: "Facename[, point size[, CHARSET[, color[, PLAIN BOLD ITALIC UNDERLINE]]]]", but I cannot find any info about way to define the charset. My russian popup help is totally unreadeable. HH_POPUP popupAttr; memset(&popupAttr, 0, sizeof(popupAttr)); popupAttr.cbStruct = sizeof(popupAttr); popupAttr.clrBackground = COLORREF(-1); popupAttr.clrForeground = COLORREF(-1); popupAttr.rcMargins.left = -1; popupAttr.rcMargins.bottom = -1; popupAttr.rcMargins.right = -1; popupAttr.idString = UINT(helpInfo->dwContextId); popupAttr.pt = helpInfo->MousePos; popupAttr.pszFont = _T("Arial,18,HOW_TO_DEFINE_THIS_CHARSET"); // please!!! CWnd::GetDesktopWindow()->HtmlHelp(reinterpret_cast<DWORD>(&popupAttr), HH_DISPLAY_TEXT_POPUP);

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zf2 \Zend\Db\Sql\Sql using predicate in where condition

- by RomanKonz

i really don't get the point how to use predicates in zend framework 2. this is what i got: $sql->select() ->columns(array('GroupedColum' ,'minValue' => new Expression('min(ValueColumn)'))) ->from('ValueTable') ->group('GroupedColum') ->order('minValue') ->order('GroupedColum') ->limit(10); this is working fine now i want to apply somethin like that: $predicate = new Zend\Db\Sql\Predicate\Predicate(); $sql->where($predicate->greaterThan('filterColumn','20); this is what i tried, it throws no error, but it is not working :-( This is what i expect as SQL: select GroupedColum , min(ValueColumn) as minValue from ValueTable where filterColumn > 20 group by GroupedColum order by minValue GroupedColum limit 10;

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AJAX is reloading page on a SharePoint site (SharePoint 2007 AJAX-enabled)

- by Josh

I have an AJAX-enabled SharePoint 2007 site. I have also created a user control that has an interactive ajax form. It obviuosly works like a charm locally, but I am trying to get it working on the SharePoint site. The problem is that once I load up the user control on to an aspx page inside SharePoint, the form (which has ajax), causes the page to reload every time a postback occurs. Can someone help point me in the direction of debugging this? - I really need to eliminate the page refreshes and have the ajax work correctly in SharePoint. I read that the ScriptManager has to be in the SharePoint masterpage, but that did not work either... Page still reloads everytime. Thanks.

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Django aggregation query on related one-to-many objects

- by parxier

Here is my simplified model: class Item(models.Model): pass class TrackingPoint(models.Model): item = models.ForeignKey(Item) created = models.DateField() data = models.IntegerField() In many parts of my application I need to retrieve a set of Item's and annotate each item with data field from latest TrackingPoint from each item ordered by created field. For example, instance i1 of class Item has 3 TrackingPoint's: tp1 = TrackingPoint(item=i1, created=date(2010,5,15), data=23) tp2 = TrackingPoint(item=i1, created=date(2010,5,14), data=21) tp3 = TrackingPoint(item=i1, created=date(2010,5,12), data=120) I need a query to retrieve i1 instance annotated with tp1.data field value as tp1 is the latest tracking point ordered by created field. That query should also return Item's that don't have any TrackingPoint's at all. If possible I prefer not to use QuerySet's extra method to do this. That's what I tried so far... and failed :( Item.objects.annotate(max_created=Max('trackingpoint__created'), data=Avg('trackingpoint__data')).filter(trackingpoint__created=F('max_created')) Any ideas?

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Django loading mysql data into template correctly

- by user805981

I'm new to django and I'm trying to get display a list of buildings and sort them alphabetically, then load it into an html document. Is there something that I am not doing correctly? below is models.py class Class(models.Model): building = models.CharField(max_length=20) class Meta: db_table = u'class' def __unicode__(self): return self.building below is views.py views.py def index(request): buildinglist = Class.objects.all().order_by('building') c = {'buildinglist': buildinglist} t = loader.get_template('index.html') return HttpResponse(t.render(c)) below is index.html index.html {% block content%} <h3>Buildings:</h3> <ul> {% for building in buildinglist %} <li> <a href='www.{% building %}.com'> # ex. www.searstower.com </li> {% endfor %} </ul> {% endblock %} Can you guys point me in the right direction? Thank you in advance guys! I appreciate your help very much.

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