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Articles indexed Monday March 22 2010

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  • Implementing Domain Driven Design

    - by Steve Dunn
    Is anyone using the techniques from Domain Driven Design? I've recently read the Eric Evans book of the same name (well, most of it!) and would be interested to hear from anyone who's implemented all/some of it in a project (particularly in C#/C++) I've kept this question open ended as I'd like to see as many comments as possible, but I have a few questions in particular: 1 - Should value types be real 'value types' if the language supports it? e.g. a struct in C# 2- Is there any feature in C# that makes clearer the association between the language and the model (for instance, this is an entity, this is an aggregate etc.)

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  • How to model "target day" in UML Classdiagrams

    - by Tobiask
    Hi there, I want to describe the following situation in an UML Classdiagram: A day, on which a newspaper is send to a customer. This day could be sth. like "every friday" or "every first day of a month". My idea to represent this in a UML Classdiagram: -targetDay:Integer -targetDayGrid:Enumeration targetDay would be sth. like "1" (for monday) oder "5" (for friday) or it could be "1" for the first day of the month or "10" for the 10th day of the month. targetDayGrid is an enum: weekly, monthly. So the enum sets the semantic meaning of the number in targetDay. I´m not happy with this, do you know any other solution to represent my problem? Or do you think my solution is okay?

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  • ASP.NET application stopping event?

    - by Barguast
    I have a ASP.NET application which implements a custom in-memory cache. I'm using this as opposed to ASP.NET's caching mechanism as I needed a more complex way to handle what to drop from the cache. Part of this custom cache is a separate thread which occasionally searches for data to drop from the cache whenever it gets too large. What I need to do is signal this cache maintenance thread to stop whenever the ASP.NET application 'exits'. I guess this basically amounts to when the web site is stopped in IIS. Is there a pre-existing event I can utilise to do this? Thanks.

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  • Append XML string block WITH NAMESPACE REF to existing XmlDocument in .NET

    - by FT
    I have an xml document (XmlDocument) which looks like this... <stuff xmlns:n="hhtp://tempuri.com/"> </stuff> ... and a "fragment" (string) which looks like this <things> <thing n:type="info"> </thing> </things> I want to "inject" the fragment into the main document. How? (HINT: You can't use XmlDocumentFragment because the namespace 'n' isn't declared in the fragment, and the object model complains about this - throwing an 'unknown namespace' error even though the resultant document will be perfectly valid.)

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  • Find multiple regex in each line and skip result if one of the regex doesn't match

    - by williamx
    I have a list of variables: variables = ['VariableA', 'VariableB','VariableC'] which I'm going to search for, line by line ifile = open("temp.txt",'r') d = {} match = zeros(len(variables)) for line in ifile: emptyCells=0 for i in range(len(variables)): regex = r'('+variables[i]+r')[:|=|\(](-?\d+(?:\.\d+)?)(?:\))?' pattern_variable = re.compile(regex) match[i] = re.findall(pattern_variable, line) if match[j] == []: emptyCells = emptyCells+1 if emptyCells == 0: for k, v in match[j]: d.setdefault(k, []).append(v) The requirement is that I will only keep the lines where all the regex'es matches! I want to collect all results for each variable in a dictionary where the variable name is the key, and the value becomes a list of all matches. The code provided is only what I've found out so far, and is not working perfectly yet...

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  • PHP: Get instance of static class by string value

    - by Tirithen
    I'm working on a php web api that was handed to me with a lot of code that needs to be refactored. The ones that wrote the code wanted to include a static configuration class to an api resource and then get an instance of that class something like this: <?php $obj = "User"; $confObjectSuffix = "_conf"; $confObject = $obj.$confObjectSuffix; if ($confObject::inst()->checkMethod($method)) { ..... This gives the error "Parse error: syntax error, unexpected T_PAAMAYIM_NEKUDOTAYIM in ....." since $confObject is a string and not a object. I wrote some testcode: <?php $class = "User_conf"; echo "<pre>"; print_r($$class::Inst()); echo "</pre>"; class User_conf { private static $INSTANCE = null; public static function Inst() { if(User_conf::$INSTANCE === null) { User_conf::$INSTANCE = new User_conf(); } return User_conf::$INSTANCE; } } But can't get it to work with $$ either, is there some other way around this? I don't want to rewrite more than necessary.

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  • Why can't any browser understand this link? (exept firefox)

    - by Johua
    Hy people. I'm working on my webapp for the iphone. On some point you have the option to get a particular document from our appserver. It works on firefox, but safari just shows an empty download window. IE also can't get the file. Below is the example link. Is there something wrong with a link of this kind that Safari can't see? http://192.168.200.32:9999/USER_STORAGE?user=bt&token=bEVfjg%2FGHoHHU2CxmAWyiTXFUgN9kN2o8pEKgCFV5Fw%3D&nonce=9jJgj4qGXB4U7m%2FJXjjsmbfreH2J2nT8D789jHY6zro%3D&parent_session=cjDEN3PvltsAqjiagynS8mN6HKeAgqWv82WJqxWiXD8%3D&method=download&filename=Testdokument2

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  • I need some help with either my SQL or my PHP I do not know which...

    - by sico87
    Hello I am creating a CMS and some of the functionality of it that the images that are within the content are managable. I currently trying to display a table that shows the the content title and then the associated images, ideally I would like a layout similar to this, Content Title Image 1 Image 2 Image 3 Content Title 2 Image 1 Image 2 Content Title 3 Image 1 The SQL the returns the data is actually formed using Codeigniters Active Record class, function getAllContentImages() { $this->db->select('*'); $this->db->from('contentImagesTable'); $this->db->join('contentTable', 'contentTable.contentId = contentImagesTable.contentId'); $this->db->join('categoryTable', 'categoryTable.categoryId = contentTable.categoryId'); $query = $this->db->get(); return $query->result_array(); } The array that is returned is looks like this, I have cut the size down for readability. Array ( [0] => Array ( [contentImageId] => 25 [contentImageName] => green.png [contentImageType] => .png [contentImagePath] => /var/www/bangmarketing.bang/media/uploads/contentImages/2/green.png [isHeadlineImage] => 1 [contentImageDateUploaded] => 1265222654 [contentId] => 2 [dashboardUserId] => 0 [contentTitle] => sadsadsadassss [contentAbstract] => <p>Pllllleeeeeeeaaaaasssssseeeeee Work</p> [contentBody] => <p>Please work :-( please</p> [contentOnline] => 0 [contentAllowComments] => 0 [contentDateCreated] => 1265124038 [categoryId] => 1 [categoryTitle] => blogsss [categoryAbstract] => <p>asdsdsadasdsadfdsgdgdsgdsgssssssssssss</p> [categorySlug] => blog [categoryIsSpecial] => 0 [categoryOnline] => 1 [categoryDateCreated] => 1266588327 ) [1] => Array ( [contentImageId] => 28 [contentImageName] => yellow.png [contentImageType] => .png [contentImagePath] => /var/www/bangmarketing.bang/media/uploads/contentImages/7/yellow.png [isHeadlineImage] => 1 [contentImageDateUploaded] => 1265388055 [contentId] => 7 [dashboardUserId] => 0 [contentTitle] => Another Blog [contentAbstract] => <p>This is another blog and it is shit becuase this does not work</p> [contentBody] => <p>ioasfihfududfhdufhuishdfiudshfiudhsfiuhdsiufhusdhfuids</p> [contentOnline] => 1 [contentAllowComments] => 0 [contentDateCreated] => 1265388034 [categoryId] => 1 [categoryTitle] => blogsss [categoryAbstract] => <p>asdsdsadasdsadfdsgdgdsgdsgssssssssssss</p> [categorySlug] => blog [categoryIsSpecial] => 0 [categoryOnline] => 1 [categoryDateCreated] => 1266588327 ) [2] => Array ( [contentImageId] => 33 [contentImageName] => portaski.jpg [contentImageType] => .jpg [contentImagePath] => /var/www/bangmarketing.bang/media/uploads/contentImages/11/portaski.jpg [isHeadlineImage] => 1 [contentImageDateUploaded] => 1265714175 [contentId] => 11 [dashboardUserId] => 0 [contentTitle] => Portaski - new product and brand launch by Bang [contentAbstract] => <p>Bang's experience in new product development has helped launch PortaSki &ndash; the pocket-sized device which is set to revolutionise skiing.</p> [contentBody] => <p>After developing Portaski's brand identity and positioning, Bang re-designed the product and its packaging ahead of launch in late 2008.</p> <p>A media and PR strategy was devised and implemented using Bang's close relationship with two of the UK's most influential organisations in the Advertising and Media Buying industries. On-line advertising was supported with editorial reviews in the UK's leading broadsheets and tabloids, which combined with pin-point HTML direct mail to drive consumers to the new e-commerce site.</p> <p>Impressive month-on-month growth has been achieved since launch, and the direct marketing activity resulted in an unprecedented 2.71% of targets going on-line to purchase a PortaSki.</p> <p>For further information visit <a href="http://www.portaski.com" target="_blank">www.portaski.com</a></p> [contentOnline] => 1 [contentAllowComments] => 0 [contentDateCreated] => 1265718184 [categoryId] => 1 [categoryTitle] => blogsss [categoryAbstract] => <p>asdsdsadasdsadfdsgdgdsgdsgssssssssssss</p> [categorySlug] => blog [categoryIsSpecial] => 0 [categoryOnline] => 1 [categoryDateCreated] => 1266588327 ) [3] => Array ( [contentImageId] => 26 [contentImageName] => housingplus.jpg [contentImageType] => .jpg [contentImagePath] => /var/www/bangmarketing.bang/media/uploads/contentImages/5/housingplus.jpg [isHeadlineImage] => 1 [contentImageDateUploaded] => 1265284989 [contentId] => 5 [dashboardUserId] => 0 [contentTitle] => Bang launches Housing Plus [contentAbstract] => <p>Bang has launched Housing Plus, the new brand for the Central Borders Housing Group, along with new sub-brands Property Care and SSHA.</p> [contentBody] => <p>The Midlands based Group, with turnover in excess of &pound;21M, appointed Bang in 2008 following an open pitch of over 40 agencies. Bang's work began with an extensive marketing research strategy that challenged the Group's former positioning and brand structure.</p> <p>The research unveiled that the housing sector demanded a values-led Group. This led Bang to develop the brave &lsquo;Together for the Right Reasons' positioning for Housing Plus.</p> <p>Chris Garratt, Marketing Director at Bang explained "The housing sector has witnessed wholesale change in recent years. Much to tenant's dismay, many associations and Groups appear to be losing touch with their roots, we wanted to develop a Group for associations who place principles at the heart of their corporate strategy".</p> <p>The repositioned sub-brands also play an important role in the Group's revised brand by highlighting Housing Plus' willingness to embrace and nurture individual identities. Chris Garratt continued "By adopting a &lsquo;house of brands' hierarchy from the outset, Housing Plus has sent out a strong message to prospective strategic partners".</p> <p>Bang handled all aspects of work for the redevelopment of the three brands, including research, brand creation, naming, positioning, internal branding and communications, advertising, the brand launches, building the brands' on-line presence and the creation of a powerful brand film &ndash; which is already attracting significant interest from across the sector.</p> [contentOnline] => 1 [contentAllowComments] => 0 [contentDateCreated] => 1265285940 [categoryId] => 8 [categoryTitle] => News [categoryAbstract] => <p>The world at Bang Marketing moves fast, keep up to date w [categorySlug] => news [categoryIsSpecial] => 0 [categoryOnline] => 1 [categoryDateCreated] => 1265283717 ) I need a way that I can get all the content images associated with the same content title in one group and then display under the content title. Can anyone help?

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  • RIA Services Repository Save does not work!?

    - by Savvas Sopiadis
    Hello everybody! Doing my first SL4 MVVM RIA based application and i ran into the following situation: updating a record (EF4,NO-POCOS!!) in the SL-client seems to take place, but values in the dbms are unchanged. Debugging with Fiddler the message on save is (amongst others): EntityActions.nil? b9http://schemas.microsoft.com/2003/10/Serialization/Arrays^HasMemberChanges?^Id?^ Operation?Update I assume that this says only: hey! the dbms should do an update on this record, AND nothing more! Is that right?! I 'm using a generic repository like this: public class Repository<T> : IRepository<T> where T : class { IObjectSet<T> _objectSet; IObjectContext _objectContext; public Repository(IObjectContext objectContext) { this._objectContext = objectContext; _objectSet = objectContext.CreateObjectSet<T>(); } public IQueryable<T> AsQueryable() { return _objectSet; } public IEnumerable<T> GetAll() { return _objectSet.ToList(); } public IEnumerable<T> Find(Expression<Func<T, bool>> where) { return _objectSet.Where(where); } public T Single(Expression<Func<T, bool>> where) { return _objectSet.Single(where); } public T First(Expression<Func<T, bool>> where) { return _objectSet.First(where); } public void Delete(T entity) { _objectSet.DeleteObject(entity); } public void Add(T entity) { _objectSet.AddObject(entity); } public void Attach(T entity) { _objectSet.Attach(entity); } public void Save() { _objectContext.SaveChanges(); } } The DomainService Update Method is the following: [Update] public void UpdateCulture(Culture currentCulture) { if (currentCulture.EntityState == System.Data.EntityState.Detached) { this.cultureRepository.Attach(currentCulture); } this.cultureRepository.Save(); } I know that the currentCulture-Entity is detached. What confuses me (amongst other things) is this: is the _objectContext still alive? (which means it "will be"??? aware of the changes made to record, so simply calling Attach() and then Save() should be enough!?!?) What am i missing? Development Environment: VS2010RC - Entity Framework 4 (no POCOs) Thanks in advance

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  • Silverlight: Set Items Widths in ItemsControl to Stretch

    - by Tom Allen
    I've got an ItemsControl which fills from top to bottom, but I can't get it's child items to occupy the whole width of the ItemsControl: I basically need to stretch the green bits to fill the width of the control (as shown by the blue bits). I've tried things like setting the HorizontalAlignment property of the template item to Stretch and I've even tried binding it's Width property to the ItemsControl Width, but neither worked. Should be a straight forward one, but it's something I just can't quite figure out...

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  • Inserting clobs into oracle with ODBC

    - by Carra
    I'm trying to insert a clob into Oracle. If I try this with an OdbcConnection it does not insert the data into the database. It returns 1 row affected and no errors but nothing is inserted into the database. It does work with an OracleConnection. However, using the Microsoft OracleClient makes our webservices often crash with an AccessViolationException (Attempted to read or write protected memory. This is often an indication that other memory is corrupt.). This happens a lot when we use OracleDataAdapter.Fill(dataset). So using this doesn't seem like an option. Is there any way to insert/update clobs with more then 4.000 characters from .Net with an OdbcConnection?

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  • How to set up port forwarding on a dedicated server running CentOS 5.4 to use Ubuntu 9.0.4

    - by mairtinh
    The basic situation that I have is a dedicated server running CentOS 5.4 At the moment I have one VM running Ubuntu 9.0.4. Later on, I will want to add another VM running Windows Server 2003 but at the moment I am focusing on getting Ubuntu up and running. The Ubuntu installation is working fine but I'm seriously struggling to get port forwarding working so that I can access websites to be hosted on the Ubuntu VM. As a newbie to Linux, I am confused about the relationship between IPTables and VMWare's own port forwarding. Here's what I've tried so far. The IP of my server is xxx.xxx.xxx.xxx and the provider support have told me that the subnet mask is 255.255.255.0, the gateway address is xxx.xxx.xxx.1 and the network address is xxx.xxx.xxx.0. (Those latter two surprise me a bit, I expected private gateway/network address rather than public ones.) First of all I tried Bridged Networking but had no success at all in communicating with the machine other than through the VMware console. I tried pinging it from the host (using ssh into the host) but no joy; also no Inernet access from the VM. I changed the interfaces configuration from DHCP to Static, using a static address of 192.168.1.100 and setting the gateway to xxx.xxx.xxx.1 as advised by the provider. No real difference, still cannot ping the guest from the host or vice versa and no Internet access from the guest. Then I tried NAT. The host automatically set the IP address to 192.168.132.128 with a gateway of 192.168.132.2 Now the guest has Internet access out and when I do a VNC to the host and open Firefox with 192.168.132.128 I can see the hosted website okay but I still cannot get into it from outside. I mentioned that I'm a bit confused about IPtables and VMware port forwarding, what I meant is that I'm not sure whether IPtable forwarding should be set to the IP address of the guest interface (192.168.132.128 in this case) or the gateway address 192.168.132.2 . I have a feeling that I'm missing something very simple here, can anybody tell me what it is?

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  • MySQL: Get only count of result set.

    - by Varun
    I am using MVC with PHP/MySQL. Suppose I am using 10 functions with different queries for fetching details from the database. But at other times I may want to get only the count of the result that will be returned by the query. What is the standard way to handle such situation. Should I write 10 more functions which duplicate almost whole query and return only the count. Or Should I always return the count also with the result set Or I can pass a flag to indicate that the function should return count only, and then based on the flag I will dynamically generate the (select part of) query. Or Is there a better way?

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  • How to macro-ify ant targets?

    - by Jonas Byström
    I want to be able to have different targets doing nearly the same thing, as so: ant build <- this would be a normal (default) build ant safari <- building the safari target. The targets look like this: <target name="build" depends="javac" description="GWT compile to JavaScript"> <java failonerror="true" fork="true" classname="com.google.gwt.dev.Compiler"> <classpath> <pathelement location="src"/> <path refid="project.class.path"/> </classpath> <jvmarg value="-Xmx256M"/> <arg value="${lhs.target}"/> </java> </target> <target name="safari" depends="javac" description="GWT compile to Safari/JavaScript"> <java failonerror="true" fork="true" classname="com.google.gwt.dev.Compiler"> <classpath> <pathelement location="src"/> <path refid="project.class.path"/> </classpath> <jvmarg value="-Xmx256M"/> <arg value="${lhs.safari.target}"/> </java> </target> (Nevermind the first thought that strikes: throw out ant! That's not an option just yet.) I tried using macrodef, but got a strange error message (even though the message didn't imply it, it think it had to do with putting a target in sequential). I don't want to do ant -Dwhatever=nevermind. Any ideas?

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  • Facebook Connect on iPhone question

    - by TheGambler
    When you use facebook connect on the iPhone do you have to use the supplied login button and login screen built into the framework? The reason I ask is because I'm also using twitter and I would like to have the same user experience when they log in to user as they have when they log in to facebook. So I can either replicate the login screen facebook connect uses for twitter or just not use the facebook connect login screen all together.

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  • Adding cancel ability and exception handling to async code.

    - by Rob
    I have this sample code for async operations (copied from the interwebs) public class LongRunningTask { public LongRunningTask() { //do nowt } public int FetchInt() { Thread.Sleep(2000); return 5; } } public delegate TOutput SomeMethod<TOutput>(); public class GoodPerformance { public void BeginFetchInt() { LongRunningTask lr = new LongRunningTask(); SomeMethod<int> method = new SomeMethod<int>(lr.FetchInt); // method is state object used to transfer result //of long running operation method.BeginInvoke(EndFetchInt, method); } public void EndFetchInt(IAsyncResult result) { SomeMethod<int> method = result.AsyncState as SomeMethod<int>; Value = method.EndInvoke(result); } public int Value { get; set; } } Other async approaches I tried required the aysnc page attribute, they also seemed to cancel if other page elements where actioned on (a button clicked), this approach just seemed to work. I’d like to add a cancel ability and exception handling for the longRunningTask class, but don’t erm, really know how.

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  • WMI Win32_OperatingSystem OSArchitecture field causes exception

    - by Andrew J. Brehm
    I am trying to get information on the version of Windows installed from WMI. Most fields work. I can get the operating system "Name" as well as the "Version", both are fields of the Win32_OperatingSystem object I have. But another field "OSArchitecture" generates an exception ("Not found"). strScope = "\\" + strServer + "\root\CIMV2" searcher = New ManagementObjectSearcher(strScope, "SELECT * FROM Win32_OperatingSystem") For Each mo In searcher.Get strOSName = mo("Name") strOSVersion = mo("Version") strOSArchitecture = mo("Architecture") strStatus = mo("Status") strLastBoot = mo("LastBootUpTime") Next Ignore the for each loop, I don't think it has anything to do with the field missing. The documentation says that the field ought to exist and is a String: http://msdn.microsoft.com/en-us/library/aa394239(VS.85).aspx Any ideas?

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  • Activator.CreateInstance fails in Windows Service

    - by kbe
    I have an issue with a Windows Service which throws a NullReference exception whenever I try to use var myType = Activator.CreateInstance(typeof(MyType)) There is no problem whenever I run the exact same code in a console window - and after debugging the obvious "which user is running this code" I doubt that it is a mere fact of changing the user running the service as I've tried to run the service using the computer's Administrator account as well as LocalSystem. I'm suspecting a Windows Update fiddling with default user rights but that's a bit of a desperate guess I feel. Remember: The type and assembly exist and works fine - otherwise I wouldn't be able to run the code in a console window. It is only when running in the context of a Windows Service I get an error. The question is: Can I in any way impersonate i.e. LocalSystem in a unittest by creating a GenericPrincipal (how would that GenericPrincipal look)?

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  • Facebook Connect application inside iframe not working in IE7

    - by Antoine Aubry
    I am building a Facebook Connect application that runs inside a Google gadget. Being a gadget means that the application runs inside an iframe. Inside the application, there is a form that allows registered users to post comments. The submission is made using AJAX, but I get the same results with a normal form. The problem is that I need to get the user's facebook id. In Firefox, it works fine, but on Internet Explorer 7, I get the following error: 'A session key is required for calling this method' I believe that this is due to the way IE handles third-party cookies, because if I go to Internet options / Privacy / Advanced, and check Override automatic cookie handling and accept all cookies, it works fine. I cannot pass the Facebook id from the javascript, because anyone could tamper it. EDIT: If I open the content of the iframe directly, the app works fine. The problem is really due to the IFRAME and IE security model. What am I doing something wrong? How can I work around this problem?

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  • Record demo and save as AVI for upload to YouTube?

    - by OverTheRainbow
    Hello I need to record the demo of a program in Windows, and save this into an AVI file so that I can upload it to YouTube. I tried Wink for this, but unless I overlooked it, it saves files as Flash (FLV), which YouTube refused. Is there an open-source alternative? I don't need something hardcore, just a tool that will let me save a demo, and insert a couple of slides where the demo stops to let the user read stuff and click on a button to resume watching. Thank you.

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