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  • What should I know before starting my first consulting project?

    - by bo4sho
    I just got a job for a small project. I have all the relevant skills and knowledge to complete the project, but I am concerned about getting screwed over because this is my first time working on a consultant basis. We have already agreed on an hourly wage that I'm happy with, so that's not an issue. I'm just worried that since this is my first time working on my own, I'm going to make some mistakes that could be easily avoided if I had someone give me advice beforehand. This is what I already know to do/not do: -Get everything in writing -Limit the scope of the project. Once I start the actually coding, all features should be frozen. -Make sure to communicate constantly with my client. In addition he wants an max hourly cap. What is a good way to come up with one? What else do I need to know?

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  • Social Media JSR 357 NOT approved by Executive Committee

    - by alexismp
    JSR 357 (Social Media API) has not passed the initial ballot which means, according to the JCP rules, that "the JSR submitter(s) who may revise the JSR and resubmit it within 14 days". Given the comments associated with the negative votes, it may be challenging for the submitters to address the concerns about the scope assessed by many as being too wide. Standardization is a difficult task and the JCP (the Executive Committee in fact) played its role by pointing out the challenges ahead of such a JSR as it was envisioned by its submitters, and thus the risk of never completing. If anything this proves that the JCP is working as expected. For those disappointed that Java will not get a standard "Social Media API" (for now at least), let me remind you of the recent open-sourcing of DaliCore.

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  • Ask the Readers: What Are Your Must Have Presentation Tools?

    - by Jason Fitzpatrick
    Giving a presentation, be it in front of the Board of Directors or a roomful of students, has come a long way from paper handouts and poster boards. This week we want to hear about your must-have presentation tools. Whether your must-have tool is a piece of hardware, an application, or a web-based tool, we want to hear all about it. Sound off in the comments with your favorite presentation tool and how it helps you present better. Make sure to check back in on Friday for the What You Said roundup to scope out your fellow readers’ tips and tricks. How To Create a Customized Windows 7 Installation Disc With Integrated Updates How to Get Pro Features in Windows Home Versions with Third Party Tools HTG Explains: Is ReadyBoost Worth Using?

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  • How to specify ingredients in Schema.org (other than recipes or drugs)?

    - by guillem
    I'd like to use Schema.org for a series of product specs pages. The products are cosmetics (shampoos, creams, etc.) and ideally an INCI declaration will be included for every product. I'd like to use Schema.org in the declaration, but I cannot find a suitable category in Schema.org. Ingredients is meant for cooking recipes, and ActiveIngredient for (medical) drugs and dietary supplements. Did I overlook some part of the tree? Any ideas for a workaround? Or am I trying to do something out of scope?

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  • Do I own copyright of program I made in own time?

    - by Dave Mess
    I created a software package that aids electrical engineers with common calculations used on site (substations to be specific). I created the package in my own time, without being asked and without guidance. The package is now widely used within my company and I intend to distribute it nationally. Do I own the copyright? My contract does state that all work produced is theirs, but this was outside of work and outside of my 'scope of work'. My company is mainly a civil and construction company and had no influence in the creation of the program. From comments: This is the paragraph "During the course of your service, you will disclose to the company all information, formulae, processes, inventions or improvements which you have learned, discovered or evolved during the course of your service or in connection with the business of the company and will sign any necessary documents to enable the company to obtain patent protection whether still in the company service or not. " They are taking it seriously and have got their lawyers.

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  • Should I create repositories with special functions like getStaffActive()?

    - by Parhs
    I have seen lots of articles but none really help me. That is because I want to use dapper as a DAL. Should I create repositories with special functions? Like getStaffActive()? If I use repositories I can implement with dapper-extension a generic crud I have no idea how to handle database connection. Where to open the connection? If I do this at every function then how am I supposed to use transaction scope? Somehow the repositories I work with should share a connection in order transaction to work. But how to do this? Openning connection in BLL? If I use queries and execute them directly then still the same thing.

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  • Application of LGPL license on a simple algorithm

    - by georgesl
    The "scope" of the GNU license is troubling me : I know it has been answered many times ( here, here, ... ) but shouldn't we take into consideration the complexity and originality of a code before using GPL license ? I explain : I'm working on a pet project using the DTW algorithm that I have written in C using the pseudo-code given on the wikipedia page . At one point I decided to change it for a C++ implementation ( just for hone my c++ skill ) . After doing so, I've looked for an existing implementation on the web, to compare the "cleanliness" of it, and I found this one : Vectored DTW implementation, which is part of limproved, a C++ library licensed under GPL v3 . Personnally, I don't mind the GNU license because it is a personnal project, which will never led to any kind of commercial purpose, but I wonder if this implementation can abide a company using it to open their code ( and other FOSS permissions ). Theoretically, I think it can ( I may be wrong :p ), but the algorithm in question is so simple (and old) that it should not.

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  • How To Install Windows Azure

    This tutorial assumes that you are familiar with the offerings that both Windows Azure and SQL Azure have to offer. If that is not the case, I recommend you visit the products features page located at: http://www.microsoft.com/windowsazure/features/. To begin, go to www.microsoft.com/windowsazure/sdk and click on the Get Tools amp; SDK button, shown below: Alternatively, you could choose to download the Standalone Windows Azure SDK or the Windows Azure AppFabric SDK, but that is beyond the scope of this article. Basically you would choose this option if you did not want to install the other ...

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  • ignore this test

    - by Name
    http://markitup.jaysalvat.com/downloads/markupsets/wiki/set.js Here is a useful construct when trying to hide variables from the parent namespace. All the code within the function is contained in the private scope of the function, meaning it is allowed. So you've become comfortable with jQuery and would like to learn how to write your own plugins. Great! You're in the right spot. Extending jQuery with plugins and methods is very powerful and can save you and your peers a lot of development time by abstracting your most clever functions into plugins. This post will outline the basics, best practices, and common pitfalls to watch out for as you begin writing your plugin.

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  • entity framework 4 POCO's stored procedure error - "The FunctionImport could not be found in the container"

    - by user331884
    Entity Framework with POCO Entities generated by T4 template. Added Function Import named it "procFindNumber" specified complex collection named it "NumberResult". Here's what got generated in Context.cs file: public ObjectResult<NumberResult> procFindNumber(string lookupvalue) { ObjectParameter lookupvalueParameter; if (lookupvalue != null) { lookupvalueParameter = new ObjectParameter("lookupvalue", lookupvalue); } else { lookupvalueParameter = new ObjectParameter("lookupvalue", typeof(string)); } return base.ExecuteFunction<NumberResult>("procFindNumber", lookupvalueParameter); } Here's the stored procedure: ALTER PROCEDURE [dbo].[procFindNumber] @lookupvalue varchar(255) AS BEGIN SET NOCOUNT ON; DECLARE @sql nvarchar(MAX); IF @lookupvalue IS NOT NULL AND @lookupvalue <> '' BEGIN SELECT @sql = 'SELECT dbo.HBM_CLIENT.CLIENT_CODE, dbo.HBM_MATTER.MATTER_NAME, dbo.HBM_MATTER.CLIENT_MAT_NAME FROM dbo.HBM_MATTER INNER JOIN dbo.HBM_CLIENT ON dbo.HBM_MATTER.CLIENT_CODE = dbo.HBM_CLIENT.CLIENT_CODE LEFT OUTER JOIN dbo.HBL_CLNT_CAT ON dbo.HBM_CLIENT.CLNT_CAT_CODE = dbo.HBL_CLNT_CAT.CLNT_CAT_CODE LEFT OUTER JOIN dbo.HBL_CLNT_TYPE ON dbo.HBM_CLIENT.CLNT_TYPE_CODE = dbo.HBL_CLNT_TYPE.CLNT_TYPE_CODE WHERE (LTRIM(RTRIM(dbo.HBM_MATTER.CLIENT_CODE)) <> '''')' SELECT @sql = @sql + ' AND (dbo.HBM_MATTER.MATTER_NAME like ''%' + @lookupvalue + '%'')' SELECT @sql = @sql + ' OR (dbo.HBM_MATTER.CLIENT_MAT_NAME like ''%' + @lookupvalue + '%'')' SELECT @sql = @sql + ' ORDER BY dbo.HBM_MATTER.MATTER_NAME' -- Execute the SQL query EXEC sp_executesql @sql END END In my WCF service I try to execute the stored procedure: [WebGet(UriTemplate = "number/{value}/?format={format}")] public IEnumerable<NumberResult> GetNumber(string value, string format) { if (string.Equals("json", format, StringComparison.OrdinalIgnoreCase)) { WebOperationContext.Current.OutgoingResponse.Format = WebMessageFormat.Json; } using (var ctx = new MyEntities()) { ctx.ContextOptions.ProxyCreationEnabled = false; var results = ctx.procFindNumber(value); return results.ToList(); } } Error message says "The FunctionImport ... could not be found in the container ..." What am I doing wrong?

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  • jqGrid > datatype : "local" > get and save (at once) all edited cells of a column ?

    - by Qualliarys
    Hi, i have a grid with a datatype = "local". The data are an array as follows : var mydata = [{id:1,valeur:"a_value",designation:"a_designation"}, {id:2,...}, ...]; The second column (named valeur) is the only editable column of the grid (editable:true set in colModel) In the pager of the grid, i have 2 buttons. One to edit all cells (at once) of the column named valeur: $("#mygrid").jqGrid('navButtonAdd','#pager',{caption:"Edit values", onClickButton:function(){ var ids = $('#mygrid').jqGrid('getDataIDs'); for(var i=0;i<ids.length+1;i++){ $('#mygrid').jqGrid('editRow',ids[i],true);} }}); and another one to save (at once) all the changes of the edited cells: $("#mygrid").jqGrid('navButtonAdd','#pager',{caption:"Save changes", onClickButton:function(){var ids = $('#mygrid').jqGrid('getDataIDs'); for(var i=0;i<ids.length+1;i++){ ... ??? ... }}}); when i use : var rd = $("#mygrid").jqGrid('getRowData',ids[i]); alert("valeur="+rd.valeur); for each display i get something like that: valeur=< input class="editable" role="textbox" name="valeur" id="1_valeur" style="width: 98%;" type="text" ... So, when cells are in edition mode, all rd.valeur are an input text tag ! when they are not, i get the initials values of the cells ! How to get and save all changes of this column (all cells in edition mode)?

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  • MVC App Works in Visual Studio, but not IIS7

    - by kesh
    Working on a an ASP.NET MVC Project, and I'm having some difficulties deploying to a shared dev server. Locally, when debugging using the local Visual Studio 2008 server, everything works peachy. However, once deployed, I receive the following error: Parser Error Description: An error occurred during the parsing of a resource required to service this request. Please review the following specific parse error details and modify your source file appropriately.## Heading ## Parser Error Message: Unable to find an entry point named 'BCryptGetFipsAlgorithmMode' in DLL 'bcrypt.dll'. Source Error: Line 1: <%@ Application Codebehind="Global.asax.cs" Inherits="APPLICATION_NAME.Web.MvcApplication" Language="C#" %> Source File: /APPLICATION_NAME/global.asax Line: 1 Version Information: Microsoft .NET Framework Version:2.0.50727.4927; ASP.NET Version:2.0.50727.4927 In the error log: Event sequence: 1 Event occurrence: 1 Event detail code: 0 Application information: Application domain: /LM/W3SVC/1/ROOT/APPLICATION_NAME-4-128995312096183595 Trust level: Full Application Virtual Path: /APPLICATION_NAME Application Path: E:\PROJECTS\APPLICATION\APPLICATION_NAME\APPLICATION_NAME\app\APPLICATION_NAME.Web\ Machine name: PC Process information: Process ID: 4608 Process name: w3wp.exe Account name: IIS APPPOOL\DefaultAppPool Exception information: Exception type: HttpException Exception message: Unable to find an entry point named 'BCryptGetFipsAlgorithmMode' in DLL 'bcrypt.dll'. Request information: Request URL: http://localhost/APPLICATION_NAME Request path: /APPLICATION_NAME User host address: ::1 User: Is authenticated: False Authentication Type: Thread account name: IIS APPPOOL\DefaultAppPool Thread information: Thread ID: 6 Thread account name: IIS APPPOOL\DefaultAppPool Is impersonating: False Stack trace: at System.Web.Compilation.BuildManager.ReportTopLevelCompilationException() at System.Web.Compilation.BuildManager.EnsureTopLevelFilesCompiled() at System.Web.Hosting.HostingEnvironment.Initialize(ApplicationManager appManager, IApplicationHost appHost, IConfigMapPathFactory configMapPathFactory, HostingEnvironmentParameters hostingParameters) Custom event details: After finding the deployment error, I tried adding an application locally, and that seems to result in the same application. On my local dev machine, I'm using Windows 7 RTM (x64), and on the shared server I'm running Windows Server 2008 Standard (x86). Poked around, and my FIPS encryption in Local Security Policy is disabled, so I'm at a bit of a loss.

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  • Silverlight - Access the Layout Grid's DataContext in a DataGrid CellTemplate's DataTemplate?

    - by Sudeep
    Hi, I am using Silverlight 3 to develop an application. In my app, I have a layout Grid (named "LayoutGrid") in which I have a DataGrid (named "PART_datagrid") with DataGridTemplateColumns. The LayoutGrid is set a DataContext in which there is a Ladders list as a property. This Ladders list is set as the ItemsSource for the PART_datagrid. <Grid x:Name="LayoutRoot"> <DataGrid x:Name="PART_datagrid" ItemsSource="{Binding Ladders}"> ... <DataGridTemplateColumn> <DataGridTemplateColumn.CellTemplate> <DataTemplate> <Button Name="DeleteLadder" Click.Command="{Binding ElementName=LayoutRoot, Path=DataContext.DeleteLadderCommand}" /> Now in one of the DataGridTemplateColumns I have a button which should invoke a Command thats present in the LayoutGrid's DataContext. So I tried Element-To-Element binding on my DataTemplate button as follows <Button Name="DeleteLadder" Click.Command="{Binding ElementName=LayoutRoot, Path=DataContext.DeleteLadderCommand}" /> But this does not seem to work. What I want to achieve is to handle the event of deletion of a DataGrid row at the parent DataContext level using the command. Can someone pls suggest how do I proceed on this? Thanks in advance...

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  • codeigniter & cjax framework, fatal error class 'CI_Controller' not found

    - by Martin
    I'm having this weird error with Codeigniter 2.1.3 and latest cjax for codeigniter. Weird thing is, when I download the latest codeigniter, and latest cjax framework for codeitniger and copy to my friends server, and call: domain.com/ajax.php?test/test2 to show the test ajax examples ... it works like a breeze, but when I do this on my server, I get server error (even tho, we both have same php version and such). Server then throws in error log file this error: PHP Fatal error: Class 'CI_Controller' not found in /hosting/www/domain.com/www/application/response/test.php on line 3 Now, I've read thru stackoverflow with people having this problem and solving by changing the construct and calling CI_Controller instead of Controller. But I already do that ... - I mean it's in the basic example that is suppose to work without touching the code, and it does, just not on my domain for some crappy reason. Ajax.php from cjax framework for codeingter should load controller from folder response, named test and call function test2, which looks like this (the actual file named test.php): class Test extends CI_Controller { function __construct() { parent::__construct(); } /** * * ajax.php?test/test/a/b/c * * @param unknown_type $a * @param unknown_type $b * @param unknown_type $c */ function test($a = null,$b = null, $c = null) { $this->load->view('test', array('data' => $a .' '.$b.' '.$c)); } /** * ajax.php?test/test2 * * Here we are testing out the javascript library. * * Note: the library it is not meant to be included in ajax controllers - but in front-controllers, * it is being used here for the sake of simplicity in testing. */ function test2() { $ajax = ajax(); $ajax->update('response','Cjax Works'); $ajax->append('#response','<br /><br />version: '.$ajax->version); $ajax->success('Cjax was successfully installed.', 5); //see application/views/test2.php $this->load->view('test2'); } I was hoping someone could bring some light into this problem - or maybe someone has already experienced it? Thanks for your time! Mart

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  • ImportError using nose, no ImportError using raw unittest ?

    - by southof40
    I get an ImportError when running my unittests using Nose and I don't when I just run it standalone. All files referred to here may be seen at http://gist.github.com/395541# . If I run the test script, importTest-Test.py, directly I get this output: C:\usr\x\data\src\Python\mmm>python importTest-Test.py In mmdb In BusinessLogic [] . ---------------------------------------------------------------------- Ran 1 test in 0.001s If I allow Nose to run it I get an error : C:\usr\x\data\src\Python\mmm>nosetests.exe E ====================================================================== ERROR: Failure: ImportError (No module named mmdb.DataAccess.AttemptDB) ---------------------------------------------------------------------- Traceback (most recent call last): File "c:\bin\installed\python2.6\lib\site-packages\nose-0.11.3-py2.6.egg\nose\loader.py", line 382, in loadTestsFromName addr.filename, addr.module) File "c:\bin\installed\python2.6\lib\site-packages\nose-0.11.3-py2.6.egg\nose\importer.py", line 39, in importFromPath return self.importFromDir(dir_path, fqname) File "c:\bin\installed\python2.6\lib\site-packages\nose-0.11.3-py2.6.egg\nose\importer.py", line 86, in importFromDir mod = load_module(part_fqname, fh, filename, desc) File "C:\usr\x\data\src\Python\mmm\importtest-Test.py", line 2, in <module> import importtest File "C:\usr\x\data\src\Python\mmm\importtest.py", line 1, in <module> from mmdb.BusinessLogic.AttemptManager import AttemptManager File "C:\usr\x\data\src\Python\mmm\mmdb\BusinessLogic\AttemptManager.py", line 1, in <module> from mmdb.DataAccess.AttemptDB import AttemptDB ImportError: No module named mmdb.DataAccess.AttemptDB ---------------------------------------------------------------------- Ran 1 test in 0.002s FAILED (errors=1) The files involved in the package which nose is having difficulties with are in the following structure - some may be seen here http://gist.github.com/395541# .: mmm\importtest-Test.py mmm\importtest.py mmm\mmdb mmm\__init__.py mmm\mmdb\BusinessLogic mmm\mmdb\BusinessObject mmm\mmdb\DataAccess mmm\mmdb\__init__.py mmm\mmdb\BusinessLogic\AttemptManager.py mmm\mmdb\BusinessLogic\Collections mmm\mmdb\BusinessLogic\__init__.py mmm\mmdb\BusinessLogic\Collections\__init__.py mmm\mmdb\BusinessObject\__init__.py mmm\mmdb\DataAccess\AttemptDB.py mmm\mmdb\DataAccess\__init__.py This is happening on Win32 / Python 2.6 / Nose 0.11.3 . I'd be grateful for any help. thanks.

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  • Implementation review for a MVC.NET app with custom membership

    - by mrjoltcola
    I'd like to hear if anyone sees any problems with how I implemented the security in this Oracle based MVC.NET app, either security issues, concurrency issues or scalability issues. First, I implemented a CustomOracleMembershipProvider to handle the database interface to the membership store. I implemented a custom Principal named User which implements IPrincipal, and it has a hashtable of Roles. I also created a separate class named AuthCache which has a simple cache for User objects. Its purpose is simple to avoid return trips to the database, while decoupling the caching from either the web layer or the data layer. (So I can share the cache between MVC.NET, WCF, etc.) The MVC.NET stock MembershipService uses the CustomOracleMembershipProvider (configured in web.config), and both MembershipService and FormsService share access to the singleton AuthCache. My AccountController.LogOn() method: 1) Validates the user via the MembershipService.Validate() method, also loads the roles into the User.Roles container and then caches the User in AuthCache. 2) Signs the user into the Web context via FormsService.SignIn() which accesses the AuthCache (not the database) to get the User, sets HttpContext.Current.User to the cached User Principal. In global.asax.cs, Application_AuthenticateRequest() is implemented. It decrypts the FormsAuthenticationTicket, accesses the AuthCache by the ticket.Name (Username) and sets the Principal by setting Context.User = user from the AuthCache. So in short, all these classes share the AuthCache, and I have, for thread synchronization, a lock() in the cache store method. No lock in the read method. The custom membership provider doesn't know about the cache, the MembershipService doesn't know about any HttpContext (so could be used outside of a web app), and the FormsService doesn't use any custom methods besides accessing the AuthCache to set the Context.User for the initial login, so it isn't dependent on a specific membership provider. The main thing I see now is that the AuthCache will be sharing a User object if a user logs in from multiple sessions. So I may have to change the key from just UserId to something else (maybe using something in the FormsAuthenticationTicket for the key?).

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  • Can i use a different parser for Axis 1.4?

    - by NishM
    The current SAX parser takes a lot of time (20 minutes) and heap memory(around 400mb) to deserialize the response coming from the soap server as per the logs. Our response XMLs are of average size 4 mb. A part of the log when it runs the applicaiton out of heap is below DEBUG (org.apache.axis.encoding.DeserializationContext) Pushing handler org.apache.axis.message.SOAPHandler@16d22f1 DEBUG (org.apache.axis.i18n.ProjectResourceBundle) org.apache.axis.i18n.resource::handleGetObject(newElem00) DEBUG (org.apache.axis.message.MessageElement) New MessageElement (org.apache.axis.message.MessageElement@112c22) named {}name DEBUG (org.apache.axis.encoding.DeserializationContext) Pushing element name DEBUG (org.apache.axis.utils.NSStack) NSPush (32) DEBUG (org.apache.axis.encoding.DeserializationContext) Exit: DeserializationContext::startElement() DEBUG (org.apache.axis.encoding.DeserializationContext) Enter: DeserializationContext::endElement(, name) DEBUG (org.apache.axis.i18n.ProjectResourceBundle) org.apache.axis.i18n.resource::handleGetObject(popHandler00) DEBUG (org.apache.axis.encoding.DeserializationContext) Popping handler org.apache.axis.message.SOAPHandler@16d22f1 DEBUG (org.apache.axis.utils.NSStack) NSPop (32) DEBUG (org.apache.axis.encoding.DeserializationContext) Popped element stack to org.apache.axis.message.MessageElement:property DEBUG (org.apache.axis.encoding.DeserializationContext) Exit: DeserializationContext::endElement() DEBUG (org.apache.axis.encoding.DeserializationContext) Enter: DeserializationContext::startElement(, value) DEBUG (org.apache.axis.i18n.ProjectResourceBundle) org.apache.axis.i18n.resource::handleGetObject(pushHandler00) DEBUG (org.apache.axis.encoding.DeserializationContext) Pushing handler org.apache.axis.message.SOAPHandler@16880ba DEBUG (org.apache.axis.i18n.ProjectResourceBundle) org.apache.axis.i18n.resource::handleGetObject(newElem00) DEBUG (org.apache.axis.message.MessageElement) New MessageElement (org.apache.axis.message.MessageElement@1db74af) named {}value DEBUG (org.apache.axis.encoding.DeserializationContext) Pushing element value DEBUG (org.apache.axis.utils.NSStack) NSPush (32) DEBUG (org.apache.axis.encoding.DeserializationContext) Exit: DeserializationContext::startElement() DEBUG (org.apache.axis.encoding.DeserializationContext) Enter: DeserializationContext::endElement(, value) DEBUG (org.apache.axis.i18n.ProjectResourceBundle) org.apache.axis.i18n.resource::handleGetObject(popHandler00) DEBUG (org.apache.axis.encoding.DeserializationContext) Popping handler org.apache.axis.message.SOAPHandler@16880ba DEBUG (org.apache.axis.utils.NSStack) NSPop (32) I cannot use Axis2 because of technical reasons. I have tried using HTTP Commons client instead of HTTP client but the response time remains the same. How can i link a different parser(example xerces 2.10.0 or xstream 1.3.1?) to Axis 1.4 framework in this context so that memory management and response time is favorable?.

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  • Where should I declare my CDI resources?

    - by Laird Nelson
    JSR-299 (CDI) introduces the (unfortunately named) concept of a resource: http://docs.jboss.org/weld/reference/1.0.0/en-US/html/resources.html#d0e4373 You can think of a resource in this nomenclature as a bridge between the Java EE 6 brand of dependency injection (@EJB, @Resource, @PersistenceContext and the like) and CDI's brand of dependency injection. The general gist seems to be that somewhere (and this will be the root of my question) you declare what amounts to a bridge class: it contains fields annotated both with Java EE's @EJB or @PersistenceContext or @Resource annotations and with CDI's @Produces annotations. The net effect is that Java EE 6 injects a persistence context, say, where it's called for, and CDI recognizes that injected PersistenceContext as a source for future injections down the line (handled by @Inject). My question is: what is the community's consensus--or is there one--on: what this bridge class should be named where this bridge class should live whether it's best to localize all this stuff into one class or make several of them ...? Left to my own devices, I was thinking of declaring a single class called CDIResources and using that as the One True Place to link Java EE's DI with CDI's DI. Many examples do something similar, but I'm not clear on whether they're "just" examples or whether that's a good way to do it. Thanks.

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  • According to MSDN ReadFile() Win32 function may incorrectly report read operation completion. When?

    - by Martin Dobšík
    The MSDN states in its description of ReadFile() function (http://msdn.microsoft.com/en-us/library/aa365467%28VS.85%29.aspx): “If hFile is opened with FILE_FLAG_OVERLAPPED, the lpOverlapped parameter must point to a valid and unique OVERLAPPED structure, otherwise the function can incorrectly report that the read operation is complete.” I have some applications that are violating the above recommendation and I would like to know the severity of the problem. I mean the program uses named pipe that has been created with FILE_FLAG_OVERLAPPED, but it reads from it using the following call: ReadFile(handle, &buf, n, &n_read, NULL); That means it passes NULL as the lpOverlapped parameter. That call should not work correctly in some circumstances according to documentation. I have spent a lot of time trying to reproduce the problem, but I was unable to! I always got all data in right place at right time. I was testing only Named Pipes though. Would anybody know when can I expect that ReadFile() will incorrectly return and report successful completion even the data are not yet in the buffer? What would have to happen in order to reproduce the problem? Does it happen with files, pipes, sockets, consoles, or other devices? Do I have to use particular version of OS? Or particular version of reading (like register the handle to I/O completion port)? Or particular synchronization of reading and writing processes/threads? Or when would that fail? It works for me :/ Please help! With regards Martin

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  • What are alternatives to Win32 PulseEvent() function?

    - by Bill
    The documentation for the Win32 API PulseEvent() function (kernel32.dll) states that this function is “… unreliable and should not be used by new applications. Instead, use condition variables”. However, condition variables cannot be used across process boundaries like (named) events can. I have a scenario that is cross-process, cross-runtime (native and managed code) in which a single producer occasionally has something interesting to make known to zero or more consumers. Right now, a well-known named event is used (and set to signaled state) by the producer using this PulseEvent function when it needs to make something known. Zero or more consumers wait on that event (WaitForSingleObject()) and perform an action in response. There is no need for two-way communication in my scenario, and the producer does not need to know if the event has any listeners, nor does it need to know if the event was successfully acted upon. On the other hand, I do not want any consumers to ever miss any events. In other words, the system needs to be perfectly reliable – but the producer does not need to know if that is the case or not. The scenario can be thought of as a “clock ticker” – i.e., the producer provides a semi-regular signal for zero or more consumers to count. And all consumers must have the correct count over any given period of time. No polling by consumers is allowed (performance reasons). The ticker is just a few milliseconds (20 or so, but not perfectly regular). Raymen Chen (The Old New Thing) has a blog post pointing out the “fundamentally flawed” nature of the PulseEvent() function, but I do not see an alternative for my scenario from Chen or the posted comments. Can anyone please suggest one? Please keep in mind that the IPC signal must cross process boundries on the machine, not simply threads. And the solution needs to have high performance in that consumers must be able to act within 10ms of each event.

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  • Netbeans and EOF

    - by sqlnoob
    Hey there, Java, ANTLR and Netbeans newbie here. I have installed a jdk and netbeans. I started a new project on netbeans 6.8 and i have added the antlr-3.2.jar as a library. I also created a lexer and parser class using AntlrWorks. These classes are named ExprParser.java and ExprLexer.java. I copied them into a directory named path-to-netbeans-project/src/parsers. I have a main file: package javaapplication2; import org.antlr.runtime.*; import parsers.*; public class Main { public static void main(String[] args) throws Exception{ ANTLRInputStream input = new ANTLRInputStream(System.in); ExprLexer lexer = new ExprLexer(input); CommonTokenStream tokens = new CommonTokenStream(lexer); ExprParser parser = new ExprParser(tokens); parser.prog(); } } The application builds fine. The book I'm reading says I should run the program and type in some stuff and then press Ctrl+Z (I'm on windows) to send EOF to the console. Problem is that nothing happens when I press Ctrl+z in the netbeans console. When I run from the command line, ctrl+z works fine. This is probably WAY too much information, but I can't figure it out. Sorry. Probably not a good idea to learn 3 new technologies at once.

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  • How to detect hidden field tampering?

    - by Myron
    On a form of my web app, I've got a hidden field that I need to protect from tampering for security reasons. I'm trying to come up with a solution whereby I can detect if the value of the hidden field has been changed, and react appropriately (i.e. with a generic "Something went wrong, please try again" error message). The solution should be secure enough that brute force attacks are infeasible. I've got a basic solution that I think will work, but I'm not security expert and I may be totally missing something here. My idea is to render two hidden inputs: one named "important_value", containing the value I need to protect, and one named "important_value_hash" containing the SHA hash of the important value concatenated with a constant long random string (i.e. the same string will be used every time). When the form is submitted, the server will re-compute the SHA hash, and compare against the submitted value of important_value_hash. If they are not the same, the important_value has been tampered with. I could also concatenate additional values with the SHA's input string (maybe the user's IP address?), but I don't know if that really gains me anything. Will this be secure? Anyone have any insight into how it might be broken, and what could/should be done to improve it? Thanks!

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  • How to change identifier quote character in SSIS for connection to ODBC DSN

    - by William Rose
    I'm trying to create an SSIS 2008 Data Source View that reads from an Ingres database via the ODBC driver for Ingres. I've downloaded the Ingres 10 Community Edition to get the ODBC driver, installed it, set up the data access server and a DSN on the server running SSIS. If I connect to the SQL Server 2008 Database Engine on the server running SSIS, I can retrieve data from Ingres over the ODBC DSN by running the following command: SELECT * FROM OPENROWSET( 'MSDASQL' , 'DSN=IngresODBC;UID=testuser;PWD=testpass' , 'SELECT * FROM iitables') So I am quite sure that the ODBC setup is correct. If I try the same query with SQL Server style bracketed identifier quotes, I get an error, as Ingres doesn't support this syntax. SELECT * FROM OPENROWSET( 'MSDASQL' , 'DSN=IngresODBC;UID=testuser;PWD=testpass' , 'SELECT * FROM [iitables]') The error is "[Ingres][Ingres 10.0 ODBC Driver][Ingres 10.0]line 1, Unexpected character '['.". What I am finding is that I get the same error when I try to add tables from Ingres to an SSIS Data Source View. The initial step of selecting the ODBC Provider works fine, and I am shown a list of tables / views to add. I then select any table, and try to add it to the view, and get "ERROR [5000A] [Ingres][Ingres 10.0 ODBC Driver][Ingres 10.0]line 3, Unexpected character '['.". Following Ed Harper's suggestion of creating a named query also seems to be stymied. If I put into my named query the following text: SELECT * FROM "iitables" I still get an error: "ERROR [5000A] [Ingres][Ingres 10.0 ODBC Driver][Ingres 10.0]line 2, Unexpected character '['". According to the error, the query text passed by SSIS to ODBC was: SELECT [iitables].* FROM ( SELECT * FROM "iitables" ) AS [iitables] It seems that SSIS assumes that bracket quote characters are acceptable, when they aren't. How can I persuade it not to use them? Double quotes are acceptable.

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  • Axis2 Class Generation

    - by Jack
    I have an instance of a derived class (called Child) that I would like to send between the client and server of my web service. However, the method that might be returning this instance, is marked as returning an instance of the parent class (called Parent). For example: public class Service{public Parent createInstanceOfParentOrChildObject();} While Child is not a parameter anywhere in the service nor is it ever specifically named as a return type (only Parent is ever named), it is nonetheless generated and returned inside certain methods (and then cast to Parent). I generated the wsdl file using Axis2 1.4.1 java2wsdl and specifying that it include this class (using the -xc parameter). I did not use Axis2 1.5.1 because it was not honoring the -xc parameter though it looks like that bug is supposedly fixed in Axis2 1.6. I even did a quick check of the generated .wsdl file to ensure that it did indeed include a definition for Child (and, of course, Parent). However, when I used wsdl2java to generate the server-side (and client-side) code, Child was not generated. How can I get wsdl2java to generate Child? I realize that I could do this by hand but I don't want to have to do this for both the client and server. I was also hoping that I could make this as easy as possible for people to use my wsdl to generate their own clients.

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  • Django deployment - can't import app.urls

    - by hora
    I just moved a django project to a deployment server from my dev server, and I'm having some issues deploying it. My apache config is as follows: <Location "/"> Order allow,deny Allow from all SetHandler python-program PythonHandler django.core.handlers.modpython SetEnv DJANGO_SETTINGS_MODULE project.settings PythonDebug On PythonPath "['/home/django/'] + sys.path" </Location> Django does work, since it renders the Django debug views, but I get the following error: ImportError at / No module named app.urls And here is all the information Django gives me: Request Method: GET Request URL: http://myserver.com/ Django Version: 1.1.1 Python Version: 2.6.5 Installed Applications: ['django.contrib.auth', 'django.contrib.contenttypes', 'django.contrib.sessions', 'django.contrib.sites', 'django.contrib.admin', 'django.contrib.admindocs', 'project.app'] Installed Middleware: ('django.middleware.common.CommonMiddleware', 'django.contrib.sessions.middleware.SessionMiddleware', 'django.contrib.auth.middleware.AuthenticationMiddleware') Traceback: File "/usr/lib64/python2.6/site-packages/django/core/handlers/base.py" in get_response 83. request.path_info) File "/usr/lib64/python2.6/site-packages/django/core/urlresolvers.py" in resolve 218. sub_match = pattern.resolve(new_path) File "/usr/lib64/python2.6/site-packages/django/core/urlresolvers.py" in resolve 216. for pattern in self.url_patterns: File "/usr/lib64/python2.6/site-packages/django/core/urlresolvers.py" in _get_url_patterns 245. patterns = getattr(self.urlconf_module, "urlpatterns", self.urlconf_module) File "/usr/lib64/python2.6/site-packages/django/core/urlresolvers.py" in _get_urlconf_module 240. self._urlconf_module = import_module(self.urlconf_name) File "/usr/lib64/python2.6/site-packages/django/utils/importlib.py" in import_module 35. __import__(name) Exception Type: ImportError at / Exception Value: No module named app.urls Any ideas as to why I get an import error?

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