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• Does the Microsoft SQL Server native client support IDBAsynchNotify?

  - by Aaron Klotz

  I'm working on some OLE DB code that runs queries on MS SQL Server via ICommand::Execute. I'm converting this code to operate asynchronously by setting the DBPROPVAL_ASYNCH_INITIALIZE property on the command before executing. I'd prefer to register a IDBAsynchNotify sink so that my code can be notified of events, as opposed to polling or blocking via ISSAsynchStatus. The documentation for ICommand::Execute does not show IConnectionPointContainer as an acceptable riid parameter, but the same document, when discussing the DB_S_ASYNCHRONOUS return code, suggests that it is possible to request an IConnectionPointContainer interface that I could use to register my event sink. When I call ICommand::Execute, passing IID_IConnectionPointContainer as the riid parameter, I receive the E_NOINTERFACE error. I also tried setting the DBPROP_IConnectionPointContainer property before Execute but I received the same results. If I have to, I'll use ISSAsynchStatus, but I'd much rather use IDBAsynchNotify. Is it possible?

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• How to execute a shell script on startup?

  - by vijay.shad

  I have create a script to start a server(my first question). Now I want it to run on the system boot and start the defined server. What should I do to get this done? My findings tell me put this file in /etc/init.d location and it will execute when the system will boot. But I am not able to understand how the first argument on the startup will be start? Is this predefined somewhere to use start as $1? If I want to have a case startall that will start all the servers in the script, then what are the options I can manage. My Script is like this: #!/bin/bash case "$1" in start) start ;; stop) stop ;; restart) $0 stop $0 start ;; *) echo "usage: $0 (start|stop|restart)" ;; esac

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• Apache complex regex crashing with 500 error

  - by digitalspaghetti

  I have been working with an existing website out company has running until I finish developing the new site. I've been asked to add some additional functionality to booking pages that will automatically set a booking button based on passed parameters. The existing working regex is as follows: RewriteRule ^.+-(\d+)\.accommodation$ property_detail.php?id=$1 Which works fine with the url like below and passes through the URL. this-is-the-property-name.1234.accomodation However as a quick shiv, I am trying to do the following: this-is-the-property-name.1234.accomodation?override=true&start_date=2010-05-14&numbernights=2&sleeps=10&price=1012 The regex I came up with for this was: RewriteRule ^.+-(\d+)\.accommodation\?override=(\w+)&start_date=(19|20)[0-9]{2}[- /.](0[1-9]|1[012])[- /.](0[1-9]|[12][0-9]|3[01])&numbernights=(\d+)&sleeps=(\d+)&price=(\d+)$ property_detail.php?id=$1&override=$2&start_date=$3-$4-$5&numbernights=$6&sleeps=$7&price=$8 The regex is passing as valid in RegexBuddy - however it keeps causing a 500 error on the server. Can anyone help me get my head around this one?

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• UrlEncoding-Safe Delimiter

  - by Aren B

  So the site I'm working on has a filter system that operates by passing a key and value system through a querystring. The whole site is going through a re-factor soon and I'm maintaining the existing site so before we discuss the RIGHT way to implement this, I just need ideas for changing my delimiter. The current format is like this: cf=<key>:<value> The problem is, I've recently run into an issue because some of our new values for this filter contain : in them. I.e: cf=MO_AspectRatio:16:10 The value is being UrlEncoded, but the browsers are de-coding %3a into : on the fly because the : doesn't inherently break the urls. I need some suggestions for url-safe delimiters that aren't :,-,_,&,? that makes sense. I'm not looking for a solution like () or something wild.

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• How to interpret the bash command "usage" syntax?

  - by raoulsson

  How exactly do you have to interpret the output of a commands "usage" output, in bash for example. For example, on my OS X, cp gives me usage: cp [-R [-H | -L | -P]] [-fi | -n] [-apvX] source_file target_file cp [-R [-H | -L | -P]] [-fi | -n] [-apvX] source_file ... target_directory What does the nested options, like -H within -R, indicate? Does upper and lower case have any meaning? When is an argument optional, required? I need to implement a telnet command line against a program of mine and I would like to get this straight.

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• Does JSON.js cause conflicts with Sys.Serialization.JavaScriptSerializer.serialize

  - by David Robbins

  I am using Telerik controls in my webforms and want to serialize object on the client. Since I am getting a stackoverflow error with Sys.Serialization.JavaScriptSerializer.deserialize I wanted to try JSON. With both JSON and and the MS library I get "Sys.Application is undefined." Has anyone encountered this what did you do as a work around? EDIT I am serializing my object on a parent page and passing them via an argument to a child window. The child window is in an IFRAME tag. The object can be used in the child page, but I receive the stackoverflow error when I serialize it. The object is an Array of objects.

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• Code coverage (c++ code execution path)

  - by Poni

  Let's say I have this code: int function(bool b) { // execution path 1 int ret = 0; if(b) { // execution path 2 ret = 55; } else { // execution path 3 ret = 120; } return ret; } I need some sort of a mechanism to make sure that the code has gone in any possible path, i.e execution paths 1, 2 & 3 in the code above. I thought about having a global function, vector and a macro. This macro would simply call that function, passing as parameters the source file name and the line of code, and that function would mark that as "checked", by inserting to the vector the info that the macro passed. The problem is that I will not see anything about paths that did not "check". Any idea how do I do this? How to "register" a line of code at compile-time, so in run-time I can see that it didn't "check" yet? I hope I'm clear.

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• Why can't PHP script write a file on server 2008 via command line or task scheduler?

  - by rg89

  I have a PHP script. It runs well when I use a browser. It writes an XML file in the same directory. The script takes ~60 seconds to run, and the resulting XML file is ~16 MB. I am running PHP 5.2.13 via FastCGI on Server 2008 64 bit. I created a task in task scheduler to run c:\php5\php.exe "D:\inetpub\tools\something.php" No error returned, but no file created. If I run this same path and argument at a command line it does not error and does not create the file. I am doing a simple fopen fwrite fclose to save the contents of a php variable to a .xml file, and the file only gets created when the script is run through the browser. Thanks

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• MonoRail - Select parent category from one dropdown, show child category dropdown

  - by Justin

  Hey, I'm new to MonoRail and am trying to figure out how to have it so that I can select a parent category in a dropdown then have it show a second dropdown with the categories that are children of the parent. If I were using what I'm used to, ASP.NET MVC, I would have a javascript function that would be called onchange of the first dropdown and would make an ajax call to a controller method (passing in the selected parent category id) that would grab all child categories of that parent category and return them in JSON. Then in the callback javascript function I would eval the JSON and populate the second dropdown with the child categories. How would I do this using MonoRail/jQuery? Here's the code I have so far: $FormHelper.Select("business.category.id", $categories, "%{value='id', text='name', firstoption='Select a Category'}") $FormHelper.Select("business.category.id", $childCategories, "%{value='id', text='name', firstoption='Select a Sub-Category'}") Then in BusinessController.cs: private void AddDataToModels() { PropertyBag["categories"] = CategoryRepository.GetParentCategories(); PropertyBag["childCategories"] = CategoryRepository.GetChildCategories(1); } Thanks for any input on how to approach this! Justin

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• Is it possible to Update Sharepoint List Without "ID" ? : c#

  - by Pari

  Hi, I want to Upload File on Sharepoint and while apploading only i want to add all properties of Uploaded Document. We get ID field only when Document is uploaded on Sharepoint. Is there any other way to Update List without passing ID Field. Example: <Batch OnError="Continue" ListVersion="1" ViewName="270C0508-A54F-4387-8AD0-49686D685EB2"> <Method ID="1" Cmd="Update"> <Field Name="ID">4<Field> <Field Name="Field_Name">Value</Field> </Method> <Method ID="2" Cmd="Update"> <Field Name="ID" >6</Field> <Field Name="Field_Name">Value</Field> </Method> </Batch> Refering Link I am using Sharepoint Web Services.And Uploading Document in Chunks.**

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• Python (windows) will open files from command line, but not from a script launched from eclipse

  - by Blake

  I'm pretty new to writing python for windows (linux is no problem), and am having problems getting python to recognize files when running scripts, though it behaves fine in the command line What am I doing wrong here? def verifyFile(x): # return os.path.isfile(x) This will return true (with a valid file, of course) when called from the python command line, but when I run the script from eclipse, or launch it from windows, it ALWAYS returns false. Any thoughts on why this is? I've tried passing pathnames like this: D:\Documents and Settings\BDE\Desktop\cdburn.jpg and like this: D:/Documents and Settings/BDE/Desktop/cdburn.jpg I've changed sys,argv[0] to '' I've tried this: def verifyFile(x): # try: f = open(x, 'r') f.close() return True except: return False and am getting no love! Any help would be appreciated. Thanks Blake

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• Google Visualization legend format Jquery ui tabs

  - by Liam

  I've got an issue when using the Google Visualization api line chart with Jquery ui tabs. I've got two graphs on two tabs. The first graph, which is visible by default displays fine: the second chart on the hidden tab seems to be messing up the key: I've tried changing the options but nothing I do seems to make any difference. Here are my options: options = { 'title': title, titleTextStyle: { color: color, fontSize: 20 }, 'width': 950, 'height': 400, hAxis: { minorGridlines: { count: x } }, chartArea: { width: 880 }, legend: { position: 'bottom', textStyle: { fontSize: 10 } } }; // Instantiate and draw our chart, passing in some options. var chart = new google.visualization.LineChart(document.getElementById(divId)); chart.draw(data, options); $('#tabs').tabs(); any thoughts on what is causing this and how to prevent it?? Edit If I remove the tabs() call it displays correctly. As per answer below from @Vipul tried setting the div to a fixed width, no difference.

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• Visual Studio msbuild

  - by user62958

  I have a question regarding the commandline options of msbuild. I am currently using msbuild to build projects using the existing solution files. These solution files have references to external dll which have different paths on each machine. I am currently writing a build script and passing the specific path to the project file via the /p: switch of msbuild. My current build line is: msbuild test.sln /p:ReferencePath="c:\abc" /p:ReferencePath="c:\rca" What i have noticed that Reference Path now contains only c:\rca and not c:\abc. this is causing problems for me since, the external dlls lie in two different directorys. I am allowed to keep multiple reference paths via visual studio, but not via the commandline. Is there any known way by which i can do this

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• Purpose of dereferencing a pointer as a parameter in C.

  - by Leif Andersen

  I recently came along this line of code: CustomData_em_free_block(&em->vdata, &eve->data); And I thought, isn't: a->b just syntactic sugar for: (*a).b With that in mind, this line could be re-written as: CustomData_em_free_block(&(*em).vdata, &(*eve).data); If that's the case, what is the point of passing in &(*a), as a parameter, and not just a? It seems like the pointer equivalent of -(-a) is being passed in in, is there any logic for this? Thank you.

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• SQL Server Bulk Insert failing when called from .NET SqlCommand

  - by Nick Wright

  I have a stored procedure which does bulk insert on a SQL server 2005 database. When I call this stored procedure from some SQL (passing in the name of a local format file and data file) it works fine. Every time. However, when this same stored procedure gets called from C# .NET 3.5 code using SqlCommand.ExecuteNonQuery it works intermittently. When it fails a SqlException is generated stating "Cannot bulk load. Invalid column number in the format file "c:\bulkinsert\MyFile.fmt" I don't think this error message is correct. Has anyone experienced similar problems with calling bulk insert from code? Thanks.

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• Selenium Grid not always using all of its registered RC's, why?

  - by BenA

  My Selenium Grid setup is as follows (all VMs) VM1 - Windows 7 x64 - Grid Hub + 2 RCs registering the default *firefox environment VM2 - Windows XP x32 - 2 RCs registering the default *firefox environment VM3 - Windows XP x32 - 2 RCs registering the default *firefox environment I'm happily using Mbunit and Gallio to drive the Grid, but my problem is that sometimes the Grid hub will stop passing executions over to 1 or more of the RCs, despite their showing available on the hub console. They seem to be happily maintaining their heartbeat back to the hub, but they're never asked to do any more work. This is after they had been executing tests earlier in the test run. Does anybody have any ideas why this should happen? In every case I've observed this behaviour, the last test an RC executed, before it then seemingly gets ignored by the hub, passed, and the session was successfully closed. Interestingly, whenever it happens to more than 1 of the RCs, its always (so far) been the pair that are running on the same VM. Yet they're managing to maintain their heartbeat, so it isn't a network connectivity problem. Any help would be greatly appreciated!

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• how to send a dynamic set of parameters to webmethod using jquery ajax method?

  - by kranthi

  hi, I am using jquery ajax method on my aspx page,which will invoke the webmethod in the code behind.Currently the webmethod takes a couple of parameters like firstname,lastname,address etc which I am passing from jquery ajax method using data:JSON.stringify({fname:firstname,lname:lastname,city:city}) now my requirement has been changed such that,the number and type of parameters that are going to be passed is not fixed for ex.parameter combination can be something like fname,city or fname,city or city,lname or fname,lname,city or something else.So the webmethod should be such that it should accept any number parameters.I thought of using arrays to do so, as described here. But I do not understand how can I identify which and how many parameters have been passed to the webmethod to insert/update the data to the DB.Please could someone help me with this? thanks

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• innerHTML removes attribute quotes in Internet Explorer

  - by Augustus

  When you get the innerHTML of a DOM node in IE, if there are no spaces in an attribute value, IE will remove the quotes around it, as demonstrated below: <html> <head> <title></title> </head> <body> <div id="div1"><div id="div2"></div></div> <script type="text/javascript"> alert(document.getElementById("div1").innerHTML); </script> </body> </html> In IE, the alert will read: <DIV id=div2></DIV> This is a problem, because I am passing this on to a processor that requires valid XHTML, and all attribute values must be quoted. Does anyone know of an easy way to work around this behavior in IE?

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• PHP pecl/memcached extension slow when setting option for consistent hashing

  - by HarryF

  Using the newer PHP pecl/memcached extension. Calls to Memcached::setOption() like; $m = new Memcached(); $m->setOption(Memcached::OPT_DISTRIBUTION, Memcached::DISTRIBUTION_CONSISTENT); are costing between 150 to 500ms - just in making the call to setOption() and as we're not using persistent connections but rather doing this on every request, it hurts. Delving deeper, setting Memcached::OPT_DISTRIBUTION to Memcached::DISTRIBUTION_CONSISTENT ends up calling update_continuum() in libmemcached which appears to be fairly intensive, although we're only passing a list of 15 memcached servers in, so somewhat surprising to see it take between 150 to 500ms to rebuild the continuum data structure. Could it be setting this option is only suitable for persistent connections, where it's called only once while making the initial connection? Or is this a bug libmemcached? Using the newer pecl/memcached extension 1.0.1 with libmemcached 0.38 Thanks.

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• sharpziplib + Whenever i try to add a file to existing archive, it overwrites previous contents

  - by schmoopy

  I am trying to add files to an existing zip file. Whenever i do, the new one contains the new list of files im passing in, but all of the previous ones are wiped out. I have also tried the code here: http://stackoverflow.com/questions/1356003/c-sharpziplib-adding-file-to-existing-archive -- same results Any idea why i cannot add files to an existing zip while maintaining the previous files? Here is the code: public static void AddFileToZip(string currentZipPath, List<string> files, bool includeFullPathInEntry, int compressionLevel) { ZipOutputStream zipStrm = new ZipOutputStream(File.Open(currentZipPath, FileMode.Open, FileAccess.ReadWrite)); zipStrm.SetLevel(compressionLevel); foreach (string str in files) { string entryName = str; if (!includeFullPathInEntry) entryName = new FileInfo(str).Name; ZipEntry entry = new ZipEntry(entryName); zipStrm.PutNextEntry(entry); Byte[] b = File.ReadAllBytes(str); zipStrm.Write(b, 0, b.Length); } zipStrm.Finish(); zipStrm.Close(); }

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• Unexpected behavior in Bash

  - by cYrus

  From man bash: A simple command is a sequence of optional variable assignments followed by blank-separated words and redirections, and terminated by a control operator. The first word specifies the command to be executed, and is passed as argument zero. The remaining words are passed as arguments to the invoked command. So it's perfectly legal to write: foo=bar echo $foo but it doesn't work as I expect (it prints just a newline). It's quite strange to me since: $ foo=bar printenv foo=bar TERM=rxvt-unicode [...] Could someone please explain me where I'm doing wrong?

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• Need to call COM component using reflection in .NET

  - by Usman

  I need to determine the COM component(unmanaged code) type and invoke the exposed interface's methods using reflection in C# at runtime. First What member of "Type" tells that type is COM component and we can take CLSID at runtime? Is Type.COMObject? I need to call methods of exposed interfaces as they called in unmanaged code using CoCreateInstance by passing CLSID and REFID ... I am using InvokeMember but it returns null or 0 as out parameter. How to pass out parameter in this case.? Is there any need to pass out parameter? As all my COM unmanaged code suppose to take last parameter as an OUT parameter and after executing it puts the result into that out param. But I've converted all my unmanaged COM code to .NET managed assemblies using tlbimp.exe.

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• Is this a violation of the single responsiblity principle?

  - by L. Moser

  I have the following method and interface: public object ProcessRules(List<IRule> rules) { foreach(IRule rule in rules) { if(EvaluateExpression(rule.Exp) == true) return rule.Result; } //Some error handling here for not hitting any rules } public interface IRule { Expression Exp; Object Result; int Precedence; } Because rules have a precedence, they should actually never be processed out of order. This leads me with (I think) three solutions: Sort rules before passing them into the evaluator. Change the parameter type to something that enforces a sort order. Sort within the evaluator. I like option 3 because it always ensures that it is sorted and I like option 1 because it seems more cohesive. And option 2 seems like a good compromise. Is a scenario like this context specific/subjective, or is there really a best practice to be applied here?

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• Paypal subscription API - transaction variables not POSTed

  - by morpheous

  I am writing a payments system based around paypal, I am using the HTML 'API'. I am passing the following form fields to PayPal: 'rm' = 2 'return = http://www.example.com/payment-handler.php?token=sometoken Where 'token' is a token I generated. According to the paypal documentation, a return method (rm) of 2 indicates to Paypal that the transaction data be posted back to the callback url using the POST method. When processing items using 'buy_now' buttons, the transaction items are correctly POSTed to my callback url (payment-handler.php), but for 'subscribe' operations, although the callback url is called, no POST data is sent to the url, and also, the 'token' field is missing. Instead, there is a parameter called 'auth'. I cant see anything in the paypal docs about a 'auth' field - so I dont know whats generating it and if I can reliably using it. Can anyone shed some light on this?

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• How to zoom in google map (J2ME)

  - by Nivek

  Hi all, I am trying to develop a J2ME application that could retrieve the google map by passing in the GPS coordinates. From http://wiki.forum.nokia.com/index.php/Google_Maps_API_in_Java_ME, it provides the Utility method for map scrolling. Basically it states that i need to include MicroFloat library in my project. Here's what i did (Not sure if i am doing it right) Create a project, build the code. Add the jar file into my current project lib. but i am still getting error from codes. Example double LToY(double y) { return Math.round( offset - radius * Double.longBitsToDouble(MicroDouble.log( Double.doubleToLongBits( (1 + Math.sin(Math.toRadians(y))) / (1 - Math.sin(Math.toRadians(y))) ) )) / 2); } Am i missing any import statment??? Btw i am using netbeans 6.5. Thanks for any guidance... Kevin

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