Search Results

Search found 1290 results on 52 pages for 'hierarchy'.

Page 39/52 | < Previous Page | 35 36 37 38 39 40 41 42 43 44 45 46  | Next Page >

• Rails: keeping DRY with ActiveRecord models that share similar complex attributes

  - by Greg

  This seems like it should have a straightforward answer, but after much time on Google and SO I can't find it. It might be a case of missing the right keywords. In my RoR application I have several models that share a specific kind of string attribute that has special validation and other functionality. The closest similar example I can think of is a string that represents a URL. This leads to a lot of duplication in the models (and even more duplication in the unit tests), but I'm not sure how to make it more DRY. I can think of several possible directions... create a plugin along the lines of the "validates_url_format_of" plugin, but that would only make the validations DRY give this special string its own model, but this seems like a very heavy solution create a ruby class for this special string, but how do I get ActiveRecord to associate this class with the model attribute that is a string in the db Number 3 seems the most reasonable, but I can't figure out how to extend ActiveRecord to handle anything other than the base data types. Any pointers? Finally, if there is a way to do this, where in the folder hierarchy would you put the new class that is not a model? Many thanks.

  Read the article

• AdMob ad in iPhone app makes App content disappear when "done" is pressed!

  - by nephilite

  Hello All, When I return from an adMob ad by hitting "done" the content of my app has disappeared ! All that remains is a background image I had attached directly to the main window. Oddly I can still hear the result of my touch events from my main screen (which is now gone). This may be related to the issue some people have had regarding a 20 pixel move involving the toolbar...I see something to that effect as the ad starts to overlay. I have admob in another app that is working fine, and I notice when the ad opens in that app the ad content fills the whole screen EXCEPT the top toolbar (it starts right under it). In the new app I'm working on right now this isn't the case. When the ad starts to open I see the tool bar vanish, then the add comes in and fills the entire screen (including the area where the tool bar was); then when I click done and the the ad goes away everything under it is gone as well. It may be worth noting that the App I had working was 2.x and the current app is 3.x (and thus using the admob 3.0 libraries). This is very odd and deal-breaking; I need help ASAP The relevant part of my view hierarchy is as follows: AppDelegate - ViewController - MainView (Ad is in here) There are also some other Views that are children of the ViewController and a UITabbar is also a subview of the ViewController (programmatically declared, not a UITabBar Controller). Any help you can offer would be extremely appreciate...I need to resolve this issue ASAP, release in two days! Thanks!!

  Read the article

• Bind a SL4 TreeView to an IGrouping using Caliburn

  - by illdev

  I am just starting in the SL world and am trying to use the Caliburn NavigationShell as my starting point. I converted the solution to SL4 and use Caliburn from the trunk . To create the basic navigation, I am a bit unsure (well, quite), how I can display the original StackPanel of Buttons as a collapsible Treeview. I changed ITaskBarItem to own a simple GroupName property public interface ITaskBarItem : IEntryPoint { BitmapImage Icon { get; } string DisplayName { get; } string GroupName { get;} } then, I expose this in ShellViewModel to the View: public IEnumerable<IGrouping<string, ITaskBarItem>> TaskBarItems { get { return _taskBarItems.GroupBy(t => t.GroupName); } } How can I do the xaml markup so that I get a simple hierarchy? How can I bind Actions with out the use of Buttons? GroupName DisplayName DisplayName DisplayName GroupName DisplayName DisplayName DisplayName ... Mind, this is MVVM, so I am not going to use code behind or events to do that...

  Read the article

• Creating files with french characters and encoding.

  - by Kevin

  HI, I am creating a file like so. FileStream temp = File.Create( this.FileName ); Then putting data in the file like so. this.Writer = new StreamWriter( this.Stream ); this.Writer.WriteLine( strMessage ); That code is encapsulated in a class hierarchy but that is the meat and potatoes of it. My problem is this. MSDN says that the default encoding for creating a file this way is UTF8. And when I write a french character such as é Textpad interprets the file as a UTF 8 file, but notepad++ says it's "ANSI as UTF8" or maybe it's an ansi file but is reading it as UTF8. When I create a file the same way without the french character both textpad and notepad++ read the file as an ansi file even though according to msdn it should be a utf 8 file still. Which program should be trusted. Notepad++ or textpad - Notepad++ seems to be more consistant, but is still the oppossite to what MSDN says it should be. My problem is that we create files that get sent off to another company and depending on whether there are french characters the encoding seems to keep changing. Or is there a better way to determine the encoding of a file. I've read about byte order marks and preambles but as far as I understand neither are guaranteed to be there. We initially thought that all the files we were building were ansi. Also please note that both ansi and utf8 should handle the french characters appropriately as the characters are part of both character sets.

  Read the article

• weak or strong for IBOutlet and other

  - by Piero

  I have switched my project to ARC, and I don't understand if I have to use strong or weak for IBOutlets. Xcode do this: in interface builder, if a create a UILabel for example and I connect it with assistant editor to my ViewController, it create this: @property (nonatomic, strong) UILabel *aLabel; It uses the strong, instead I read a tutorial on RayWenderlich website that say this: But for these two particular properties I have other plans. Instead of strong, we will declare them as weak. @property (nonatomic, weak) IBOutlet UITableView *tableView; @property (nonatomic, weak) IBOutlet UISearchBar *searchBar; Weak is the recommended relationship for all outlet properties. These view objects are already part of the view controller’s view hierarchy and don’t need to be retained elsewhere. The big advantage of declaring your outlets weak is that it saves you time writing the viewDidUnload method. Currently our viewDidUnload looks like this: - (void)viewDidUnload { [super viewDidUnload]; self.tableView = nil; self.searchBar = nil; soundEffect = nil; } You can now simplify it to the following: - (void)viewDidUnload { [super viewDidUnload]; soundEffect = nil; } So use weak, instead of the strong, and remove the set to nil in the videDidUnload, instead Xcode use the strong, and use the self... = nil in the viewDidUnload. My question is: when do I have to use strong, and when weak? I want also use for deployment target iOS 4, so when do I have to use the unsafe_unretain? Anyone can help to explain me well with a small tutorial, when use strong, weak and unsafe_unretain with ARC?

  Read the article

• Software development metrics and reporting

  - by David M

  I've had some interesting conversations recently about software development metrics, in particular how they can be used in a reasonably large organisation to help development teams work better. I know there have been Stack Overflow questions about which metrics are good to use - like this one, but my question is more about which metrics are useful to which stakeholders, and at what level of aggregation. As an example, my view is that code coverage is a useful metric in the following ways (and maybe others): For a team's own internal use when combined with other measurements. For facilitating/enabling/mentoring teams, where it might be instructive when considered on a team-by-team basis as a trend (e.g. if team A and B have coverage this month of 75 and 50, I'd be more concerned with team A than B if the previous month they'd had 80 and 40). For senior management when presented as an aggregated statistic across a number of teams or a whole department. But I don't think it's useful for senior management to see this on a team-by-team basis, as this encourages artifical attempts to bolster coverage with tests that merely exercise, rather than test, code. I'm in an organisation with a couple of levels in its management hierarchy, but where the vast majority of managers are technically minded and able (with many still getting their hands dirty). Some of the development teams are leading the way in driving towards agile development practices, but others lag, and there is now a serious mandate from the top for this to be the way the organisation works. A couple of us are starting a programme to encourage this. In this sort of an organisation, what sort of metrics do you think are useful, to whom, why, and at what level of aggregation? I don't want people to feel their performance is being assessed based on a metric that they can artificially influence; at the same time, the senior management are going to want some sort of evidence that progress is being made. What advice or caveats can you provide based on experience in your own organisations? EDIT We are definitely wanting to use metrics as a tool for organisational improvement not as a tool for individual performance measurement.

  Read the article

• Jetty startup delay

  - by Tauren

  I'm trying to figure out what would be causing a 1 minute delay in the startup of Jetty. Is it a configuration problem, my application, or something else? I have Jetty 7 (jetty-7.0.1.v20091125 25 November 2009) installed on a server and I deploy a 45MB ROOT.war file into the webapps directory. This is the only webapp configured in Jetty. I then start Jetty with the command: java -DSTOP.PORT=8079 -DSTOP.KEY=mystopkey -Denv=stage -jar start.jar etc/jetty-logging.xml etc/jetty.xml & I get two lines of output right after doing this: 2010-03-07 14:20:06.642:INFO::Logging to StdErrLog::DEBUG=false via org.eclipse.jetty.util.log.StdErrLog 2010-03-07 14:20:06.710:INFO::Redirecting stderr/stdout to /home/zing/jetty-distribution-7.0.1.v20091125/logs/2010_03_07.stderrout.log When I press the enter key, I get my command prompt back. Looking at the log file (logs/2010_03_07.stderrout.log), I see the following at the beginning: 2010-03-07 14:08:50.396:INFO::jetty-7.0.1.v20091125 2010-03-07 14:08:50.495:INFO::Extract jar:file:/home/zing/jetty-distribution-7.0.1.v20091125/webapps/ROOT.war!/ to /tmp/Jetty_0_0_0_0_8080_ROOT.war___.8te0nm/webapp 2010-03-07 14:08:52.599:INFO::NO JSP Support for , did not find org.apache.jasper.servlet.JspServlet 2010-03-07 14:09:51.379:INFO::Set web app root system property: 'webapp.root' = [/tmp/Jetty_0_0_0_0_8080_ROOT.war___.8te0nm/webapp] 2010-03-07 14:09:51.585:INFO::Initializing Spring root WebApplicationContext INFO - ContextLoader - Root WebApplicationContext: initialization started INFO - XmlWebApplicationContext - Refreshing Root WebApplicationContext: startup date [Sun Mar 07 14:09:51 PST 2010]; root of context hierarchy ... Notice the 1 minute long pause between the 3rd and 4th lines. What is Jetty doing at this point? What other things could be going on? It doesn't even look like it has started my Spring initialization yet. Note that I checked my /tmp directory to see if it was simply the time to unpack my war file, but the file had been completely unpacked even at the start of this 1 minute delay.

  Read the article

• How to change disclosure style when user enters in edit mode of a UITableView?

  - by R31n4ld0

  Hello, guys. I have a UITableView that in 'normal' mode, show a UITableViewCellAccessoryDisclosureIndicator meaning if the user taps the row, another list is showed, like HIG says: "Disclosure indicator. When this element is present, users know they can tap anywhere in the row to see the next level in the hierarchy or the choices associated with the list item. Use a disclosure indicator in a row when selecting the row results in the display of another list. Don’t use a disclosure indicator to reveal detailed information about the list item; instead, use a detail disclosure button for this purpose." When the user tap the edit button in the top bar of the UITableView, I think I have to change the disclosure because if the user tap it, a view for changing the information of the current row is showed (see the bold line above), again, like HIG says: "Detail disclosure button. Users tap this element to see detailed information about the list item. (Note that you can use this element in views other than table views, to reveal additional details about something; see “Detail Disclosure Buttons” for more information.) In a table view, use a detail disclosure button in a row to display details about the list item. Note that the detail disclosure button, unlike the disclosure indicator, can perform an action that is separate from the selection of the row. For example, in Phone Favorites, tapping the row initiates a call to the contact; tapping the detail disclosure button in the row reveals more information about the contact." Have I miss understood the HIG, or I really do have to change the disclosure style in edit mode of UITableView? If yes, how I can intercept the edit mode when the user taps the Edit button? Thanks in advance.

  Read the article

• How to use Object.GetHashCode() on a type that overrides GetHashCode()

  - by Jimmy

  Hi, I have a class A that implements IEquatable<, using its fields (say, A.b and A.c) for implementing/overriding Equals() and overriding GetHashCode(), and everything works fine, 99% of the time. Class A is part of a hierarchy (class B, C) that all inherit from interface D; they can all be stored together in a dictionary Dictionary, thus it's convenient when they all carry their own default Equals()/GetHashCode(). However, while constructing A I sometime need to do some work to get the values for A.b and A.c; while that's happening, I want to store a reference to the instance that's being built. In that case, I don't want to use the default Equals()/GetHashCode() overrides provided by A. Thus, I was thinking of implementing a ReferenceEqualityComparer, that's meant to force the use of Object's Equals()/GetHashCode(): private class ReferenceEqualityComparer<T> : IEqualityComparer<T> { #region IEqualityComparer<T> Members public bool Equals(T x, T y) { return System.Object.ReferenceEquals(x, y); } public int GetHashCode(T obj) { // what goes here? I want to do something like System.Object.GetHashCode(obj); } #endregion } The question is, since A overrides Object.GetHashCode(), how can I (outside of A) call Object.GetHashCode() for an instance of A? One way of course would be for A to not implement IEquatable< and always supply an IEqualityComparer< to any dictionary that I create, but I'm hoping for a different answer. Thanks

  Read the article

• CSS - Class hierarchies???

  - by ClarkeyBoy

  Hi, I have a site with a customer front end, which has a catalogue, homepage, contact page, about us page and so on. There is also an administration front end. I would like to implement a kind of hierarchy where any elements within an element with class "admin" will inherit properties set in the admin stylesheet and anything else inherits from the customer stylesheet. The purpose of this is so that admin can login on the admin front end, where they have access to lots of advanced stuff, but they can also navigate to the customer front end where they can execute basic tasks (such as hiding catalogue items, running a debug script if a customer reports an issue and so on). I would like all the admin tools on the customer front end to have properties taken from the admin stylesheet instead of the customer one - this will change the background colour and stuff. Is there any easy way to set up like namespaces to make things simpler, for example: .admin { .list { .list-subtitle { } .list-item { } } a { } } .customer { .list { .list-subtitle { } .list-item { } } a { } } I know it can be like: .admin .list {} .admin .list .list-item {} .admin a I just dont want to have to keep putting .admin all the time. Does anyone have any suggestions on how I could do this? I suppose I could write a .net class which sets this up and writes a stylesheet according to whats put into it, but then I would not be able to read the styles so easily add there would be all sorts of like Classes.Add(blah) and so on. Thanks in advance for any replies... Regards, Richard

  Read the article

• XML: How to reprepresent objects with multiple occurences?

  - by savras

  hi, i need to save objects that can occur multiple times. each object is marked with unique identifier. when it is serialized first time all its properties are written. after that only references are used. <actionHistory> <add> <figure id="1" xsi:type="point"> <position x="1" y="2" /> </figure> </add> <change> <target ref="1" /> <property>x</property> <value>3</value> </change> </actionHistory> element 'target' only references to point saved before, but it can contain definition of new figure as well. there is also figure class hierarchy involved. is there any way to express it using xml-schema? any suggestions how to improve code above will be also appreciated.

  Read the article

• java.lang.IllegalStateException: missing behavior definition for the preceding method call getMessag

  - by user362199

  Hi All, I'm using EasyMock(version 2.4) and TestNG for writing UnitTest. I have a following scenario and I cannot change the way class hierarchy is defined. I'm testing ClassB which is extending ClassA. ClassB look like this public class ClassB extends ClassA { public ClassB() { super("title"); } @Override public String getDisplayName() { return ClientMessages.getMessages("ClassB.title"); } } ClassA code public abstract class ClassA { private String title; public ClassA(String title) { this.title = ClientMessages.getMessages(title); } public String getDisplayName() { return this.title; } } ClientMessages class code public class ClientMessages { private static MessageResourse messageResourse; public ClientMessages(MessageResourse messageResourse) { this.messageResourse = messageResourse; } public static String getMessages(String code) { return messageResourse.getMessage(code); } } MessageResourse Class code public class MessageResourse { public String getMessage(String code) { return code; } } Testing ClassB import static org.easymock.classextension.EasyMock.createMock; import org.easymock.classextension.EasyMock; import org.testng.Assert; import org.testng.annotations.Test; public class ClassBTest { private MessageResourse mockMessageResourse = createMock(MessageResourse.class); private ClassB classToTest; private ClientMessages clientMessages; @Test public void testGetDisplayName() { EasyMock.expect(mockMessageResourse.getMessage("ClassB.title")).andReturn("someTitle"); clientMessages = new ClientMessages(mockMessageResourse); classToTest = new ClassB(); Assert.assertEquals("someTitle" , classToTest.getDisplayName()); EasyMock.replay(mockMessageResourse); } } When I'm running this this test I'm getting following exception: java.lang.IllegalStateException: missing behavior definition for the preceding method call getMessage("title") While debugging what I found is, it's not considering the mock method call mockMessageResourse.getMessage("ClassB.title") as it has been called from the construtor (ClassB object creation). Can any one please help me how to test in this case. Thanks.

  Read the article

• InstallUtil Publishing WMI Schema to 64 Bit Directory Instead of 32 Bit Directory

  - by Nick

  This is similar to this question, but it doesn't look like a good solution was ever determined, so I'm opening a new one with clarified details. We wrote a .NET service, which among other things, publishes some of the class hierarchy using WMI. On a 64-Bit machine, we are running the 32-bit version of InstallUtil to install the service. It installs successfully, but when the service runs, we receive the following error message when publishing a WMI class using Instrumentation.Publish() DirectoryNotFoundException - (Could not find a part of the path 'C:\Windows\system32\WBEM\Framework\root\MyNamespace\MyService'.) However, this directory does exist in the C:\Windows\syswow64 directory. If we manually copy that directory structure to the system32 directory, then everything works. However, we are looking for automated solution, because we have this packaged up in an MSI which we distribute onto many servers. We have tried running the 64-Bit version of InstallUtil, to see if that would work, however... and this is the really weird part... it gives us an error on install that says Installing WMI Schema: Started An exception occurred during the Install phase. System.IO.DirectoryNotFoundException: Could not find a part of the path 'C:\Windows\system32\WBEM\Framework\root\MyNamespace\MyService.mof'. It looks as if somehow, the WMI installer flipped around. Has anyone else experienced this, or know of a work around?

  Read the article

• Converting Complicated Oracle Join Syntax

  - by Grasper

  I have asked for help before on porting joins of this nature, but nothing this complex. I am porting a bunch of old SQL from oracle to postgres, which includes a lot of (+) style left joins. I need this in a format that pg will understand. I am having trouble deciphering this join hierarchy: SELECT * FROM PLANNED_MISSION PM_CTRL, CONTROL_AGENCY CA, MISSION_CONTROL MC, MISSION_OBJECTIVE MOR, REQUEST_OBJECTIVE RO, MISSION_REQUEST_PAIRING MRP, FRIENDLY_UNIT FU, PACKAGE_MISSION PKM, MISSION_AIRCRAFT MA, MISSION_OBJECTIVE MO, PLANNED_MISSION PM WHERE PM.MSN_TASKED_UNIT_TYPE != 'EAM' AND PM.MSN_INT_ID = MO.MSN_INT_ID AND PM.MSN_INT_ID = PKM.MSN_INT_ID (+) AND PM.MSN_INT_ID = MA.MSN_INT_ID (+) AND COALESCE(MA.MA_RESOURCE_INT_ID,0) = (SELECT COALESCE(MIN(MA1.MA_RESOURCE_INT_ID),0) FROM MISSION_AIRCRAFT MA1 WHERE MA.MSN_INT_ID = MA1.MSN_INT_ID) AND MA.FU_UNIT_ID = FU.FU_UNIT_ID (+) AND MA.CC_COUNTRY_CD = FU.CC_COUNTRY_CD (+) AND MO.MSN_INT_ID = MC.MSN_INT_ID (+) AND MO.MO_INT_ID = MC.MO_INT_ID (+) AND MC.CAG_CALLSIGN = CA.CAG_CALLSIGN (+) AND MC.CTRL_MSN_INT_ID = PM_CTRL.MSN_INT_ID (+) AND MO.MSN_INT_ID = MRP.MSN_INT_ID (+) AND MO.MO_INT_ID = MRP.MO_INT_ID (+) AND MRP.REQ_INT_ID = RO.REQ_INT_ID (+) AND RO.MSN_INT_ID = MOR.MSN_INT_ID (+) AND RO.MO_INT_ID = MOR.MO_INT_ID (+) AND MO.MSN_INT_ID = :msn_int_id AND MO.MO_INT_ID = :obj_int_id AND COALESCE(PM.MSN_MISSION_NUM, ' ') LIKE '%' AND COALESCE( PKM.PKG_NM,' ') LIKE '%' AND COALESCE( MA.FU_UNIT_ID, ' ') LIKE '%' AND COALESCE( MA.CC_COUNTRY_CD, ' ') LIKE '%' AND COALESCE(FU.FU_COMPONENT, ' ') LIKE '%' AND COALESCE( MA.ACT_AC_TYPE,' ') LIKE '%' AND MO.MO_MSN_CLASS_CD LIKE '%' AND COALESCE(MO.MO_MSN_TYPE, ' ') LIKE '%' AND COALESCE( MO.MO_OBJ_LOCATION,COALESCE( MOR.MO_OBJ_LOCATION, ' ')) LIKE '%' AND COALESCE(CA.CAG_TYPE_OF_CONTROL, ' ') LIKE '%' AND COALESCE( MC.CAG_CALLSIGN,' ') LIKE '%' AND COALESCE( MC.ASP_AIRSPACE_NM, ' ') LIKE '%' AND COALESCE( MC.CTRL_MSN_INT_ID, 0) LIKE '%' AND COALESCE(MC.CTRL_MO_INT_ID, 0) LIKE '%' AND COALESCE( PM_CTRL.MSN_MISSION_NUM,' ') LIKE '%' Any help is appreciated.

  Read the article

• Exporting non-public type through public API

  - by feelgood

  What if I have few factory methods returning non-public type and pairing set of methods which gives variables of this non-public type? This results with titled warning message in NetBeans. In result public API will contain only two pairing sets of methods. The reason is to make my type hierarchy sealed (like seald classes in Scala) and allow users only instantiate these types through factory methods. So we get DSL in some sense. For example, Schedule class represented by calendar fields' contraints. There are some types of contraints - Range, Singleton, List, FullSet - with NumberSet interface as a root. We don't want to expose these types and how Schedule interact with them. We just want the specification from the user. So we make NumberSet package-private. In class Schedule we create few factory-methods for constraints: NumberSet singleton(int value); NumberSet range(int form, int to); NumberSet list(NumberSet ... components); and some methods for creating Schedule object: Schedule everyHour(NumberSet minutes); Schedule everyDay(NumberSet minutes, NumberSet hours); User can only use them in the manner: Schedule s = Schedule.everyDay( singleton(0), list(range(10-15), singleton(8)) ); Is it bad idea?

  Read the article

• Spy++ for PowerBuilder applications

  - by Frerich Raabe

  Hi, I'm trying to write a tool which lets me inspect the state of a PowerBuilder-based application. What I'm thinking of is something like Spy++ (or, even nicer, 'Snoop' as it exists for .NET applications) which lets me inspect the object tree (and properties of objects) of some PowerBuilder-based GUI. I did the same for ordinary (MFC-based) applications as well as .NET applications already, but unfortunately I never developed an application in PowerBuilder myself, so I'm generally thinking about two problems at this point: Is there some API (preferably in Java or C/C++) available which lets one traverse the tree of visual objects of a PowerBuilder application? I read up a bit on the PowerBuilder Native Interface system, but it seems that this is meant to write PowerBuilder extensions in C/C++ which can then be called from the PowerBuilder script language, right? If there is some API available - maybe PowerBuilder applications even expose some sort of IPC-enabled API which lets me inspect the state of a PowerBuilder object hierarchy without being within the process of the PowerBuilder application? Maybe there's an automation interface available, or something COM-based - or maybe something else? Right now, my impression is that probably need to inject a DLL into the process of the PowerBuilder application and then gain access to the running PowerBuilder VM so that I can query it for the object tree. Some sort of IPC mechanism will then let me transport this information out of the PowerBuilder application's process. Does anybody have some experience with this or can shed some light on whether anybody tried to do this already? Best regards, Frerich

  Read the article

• SEO Friendly URL Rewriter Parameters

  - by Kristen

  I would appreciate you advice on how to incorporate parameters into SEO Friendly URLs We have decided to have the "techie" parameters first, followed by the "SEO Slug" \product\ABC123\fly-your-own-helicopter much like S.O. - if the SEO Slug changes, or is truncated, or missing, we still have the Product and ABC123 parameters; various articles say that having such extra data doesn't harm SEO ranking. We need to have additional parameters; we could use "-" to separate parameters as it makes them look similar to the SEO Slug, or we could/should use something else? \product\ABC123-BOYTOY-2\boys\toys\fly-your-own-helicopter This is product=ABC123, in Category=BOYTOY and Page=2. We also want to keep the hierarchy as flat as possible, and thus I think: \product-ABC123-BOYTOY-2\boys\toys\fly-your-own-helicopter would be better - one level less. We have a number of "zones", e.g. \product-ABC123\seo-slug-for-product \category-BOYTOY\seo-slug-for-category \article-54321\terms-and-conditions it would help us a lot if we could just user our 5 digit Page ID number instead, so these would become \12345-ABC123\seo-slug-for-product \23456-BOYTOY\seo-slug-for-category \54321\terms-and-conditions (Products & Categories have a number of different Page IDs for different templates, this style would take us straight to the right one) I would appreciate your insight into what parameter separators to use, and if the leading techi-data is going work well for us. In case relevant: Classic ASP application on IIS7 + MSSQL2008 Product & Category codes contain A-Z, 0-9, "_" only.

  Read the article

• ASP MVC: Submitting a form with nested user controls

  - by Nigel

  I'm fairly new to ASP MVC so go easy :). I have a form that contains a number of user controls (partial views, as in System.Web.Mvc.ViewUserControl), each with their own view models, and some of those user controls have nested user controls within them. I intended to reuse these user controls so I built up the form using a hierarchy in this way and pass the form a parent view model that contains all the user controls' view models within it. For example: Parent Page (with form and ParentViewModel) -->ChildControl1 (uses ViewModel1 which is passed from ParentViewModel.ViewModel1 property) -->ChildControl2 (uses ViewModel2 which is passed from ParentViewModel.ViewModel2 property) -->ChildControl3 (uses ViewModel3 which is passed from ViewModel2.ViewModel3 property) I hope this makes sense... My question is how do I retrieve the view data when the form is submitted? It seems the view data cannot bind to the ParentViewModel: public string Save(ParentViewModel viewData)... as viewData.ViewModel1 and viewData.ViewModel2 are always null. Is there a way I can perform a custom binding? Ultimately I need the form to be able to cope with a dynamic number of user controls and perform an asynchronous submission without postback. I'll cross those bridges when I come to them but I mention it now so any answer won't preclude this functionality. Many thanks.

  Read the article

• Namespaces combined with TFS / Source Control explanation

  - by Christian

  As an ISV company we slowly run into the "structure your code"-issue. We mainly develop using Visual Studio 2008 and 2010 RC. Languages c# and vb.net. We have our own Team Foundation Server and of course we use Source Control. When we started developing based on the .NET Framework, we also begun using Namespaces in a primitive way. With the time we 'became more mature', i mean we learned to use the namespaces and we structured the code more and more, but only in the solution scope. Now we have about 100 different projects and solutions in our Source Safe. We realized that many of our own classes are coded very redundant, i mean, a Write2Log, GetExtensionFromFilename or similar Function can be found between one and 20 times in all these projects and solutions. So my idea is: Creating one single kind of root folder in Source Control and start an own namespace-hierarchy-structure below this root, let's name it CompanyName. A Write2Log class would then be found in CompanyName.System.Logging. Whenever we create a new solution or project and we need a log function, we will 'namespace' that solution and place it accordingly somewhere below the CompanyName root folder. To have the logging functionality we then import (add) the existing project to the solution. Those 20+ projects/solutions with the write2log class can then be maintained in one single place. To my questions: - is that a good idea, the philosophy of namespaces and source control? - There must be a good book explaining the Namespaces combined with Source Control, yes? any hints/directions/tips? - how do you manage your 50+ projects?

  Read the article

• How to use Common Table Expression and check no duplication in SQL Server

  - by vodkhang

  I have a table references to itself. User table: id, username, managerid and managerid links back to id Now, I want to get all the managers including direct manager, manager of direct manager, so on and so forth... The problem is that I do not want to have a unstop recursive sql. So, I want to check if an id alreay in a list, I will not include it anymore. Here is my sql for that: with all_managers (id, username, managerid, idlist) as ( select u1.id, u1.username, u1.managerid, ' ' from users u1, users u2 where u1.id = u2.managerid and u2.id = 6 UNION ALL select u.id, u.username, u.managerid, idlist + ' ' + u.id from all_managers a, users u where a.managerid = u.id and charindex(cast(u.id as nvarchar(5)), idlist) != 0 ) select id, username from all_managers; The problem is that in this line: select u1.id, u1.username, u1.managerid, ' ' The SQL Server complains with me that I can not put ' ' as the initialized for idlist. nvarchar(40) does not work as well. I do not know how to declare it inside a common table expression like this one. Usually, in db2, I can just put varchar(40) My sample data: ID UserName ManagerID 1 admin 1 2 a 1 3 b 1 4 c 2 What I want to do is that I want to find all managers of c guy. The result should be: admin, a, b. Some of the user can be his manager (like admin) because the ManagerID does not allow NULL and some does not have direct manager. With common table expression, it can lead to an infinite recursive. So, I am also trying to avoid that situation by trying to not include the id twice. For example, in the 1st iteration, we already have id : 1, so, in the 2nd iteration and later on, 1 should never be allowed. I also want to ask if my current approach is good or not and any other solutions? Because if I have a big database with a deep hierarchy, I will have to initialize a big varchar to keep it and it consumes memory, right?

  Read the article

• Why does Java's invokevirtual need to resolve the called method's compile-time class?

  - by Chris

  Consider this simple Java class: class MyClass { public void bar(MyClass c) { c.foo(); } } I want to discuss what happens on the line c.foo(). At the bytecode level, the meat of c.foo() will be the invokevirtual opcode, and, according to the documentation for invokevirtual, more or less the following will happen: Look up the foo method defined in compile-time class MyClass. (This involves first resolving MyClass.) Do some checks, including: Verify that c is not an initialization method, and verify that calling MyClass.foo wouldn't violate any protected modifiers. Figure out which method to actually call. In particular, look up c's runtime type. If that type has foo(), call that method and return. If not, look up c's runtime type's superclass; if that type has foo, call that method and return. If not, look up c's runtime type's superclass's superclass; if that type has foo, call that method and return. Etc.. If no suitable method can be found, then error. Step #3 alone seems adequate for figuring out which method to call and verifying that said method has the correct argument/return types. So my question is why step #1 gets performed in the first place. Possible answers seem to be: You don't have enough information to perform step #3 until step #1 is complete. (This seems implausible at first glance, so please explain.) The linking or access modifier checks done in #1 and #2 are essential to prevent certain bad things from happening, and those checks must be performed based on the compile-time type, rather than the run-time type hierarchy. (Please explain.)

  Read the article

• Help to understand the issue with protected method

  - by zeroed

  I'm reading Sybex Complete Java 2 Certification Study Guide April 2005 (ISBN0782144195). This book is for java developers who wants to pass java certification. After a chapter about access modifiers (along with other modifiers) I found the following question (#17): True or false: If class Y extends class X, the two classes are in different packages, and class X has a protected method called abby(), then any instance of Y may call the abby() method of any other instance of Y. This question confused me a little. As far as I know you can call protected method on any variable of the same class (or subclasses). You cannot call it on variables, that higher in the hierarchy than you (e.g. interfaces that you implement). For example, you cannot clone any object just because you inherit it. But the questions says nothing about variable type, only about instance type. I was confused a little and answered "true". The answer in the book is False. An object that inherits a protected method from a superclass in a different package may call that method on itself but not on other instances of the same class. There is nothing here about variable type, only about instance type. This is very strange, I do not understand it. Can anybody explain what is going on here?

  Read the article

• Design to distribute work when generating task oriented input for legacy dos application?

  - by TheDeeno

  I'm attempting to automate a really old dos application. I've decided the best way to do this is via input redirection. The legacy app (menu driven) has many tasks within tasks with branching logic. In order to easily understand and reuse the input for these tasks, I'd like to break them into bit size pieces. Since I'll need to start a fresh app on each run, repeating a context to consume a bit might be messy. I'd like to create an object model that: allows me to concentrate on the task at hand allows me to reuse common tasks from different start points prevents me from calling a task from the wrong start point To be more explicit, given I have the following task hierarchy: START A A1 A1a A1b A2 A2a B B1 B1a I'd like an object model that lets me generate an input file for task "A1b" buy using building blocks like: START -> do_A, do_A1, do_A1b but prevents me from: START -> do_A1 // because I'm assuming a different call chain from above This will help me write "do_A1b" because I can always assume the same starting context and will simplify writing "do_A1a" because it has THE SAME starting context. What patterns will help me out here? I'm using ruby at the moment so if dynamic language features can help, I'm game.

  Read the article

• ASP.NET dynamically reassign controls in the control tree

  - by pbz

  Let's say I have a custom control that looks like this <cc:MyControl runat="server" ID="myc" LinkControlID="NewParent" /> and, on the same page: <asp:TextBox runat="server" ID="NewParent" /> What I would like to do is, from MyControl, change NewParent's parent so that it would be part of MyControl's Controls collection. When I try to do this, from OnInit, I get: The control collection cannot be modified during DataBind, Init, Load, PreRender or Unload phases. Which makes sense, but is there a way around this? I'm OK if NewParent remains the child of the Page as long as from MyControl I can somehow redirect the rendering to MyControl's control. Can this be done? Thanks. EDIT: To clarify here's a mockup of MyControl: public class MyControl : Panel { protected override void OnInit(System.EventArgs e) { base.OnInit(e); if (!String.IsNullOrEmpty(LinkControlID)) { Control link = Parent.FindControl(LinkControlID); if (link != null) { Controls.Add(link); } } } public string LinkControlID { get; set; } } This assumes that MyControl and LinkControlID are placed on the same level in the tree hierarchy, which is OK in my case.

  Read the article

• Thread implemented as a Singleton

  - by rocknroll

  Hi all, I have a commercial application made with C,C++/Qt on Linux platform. The app collects data from different sensors and displays them on GUI. Each of the protocol for interfacing with sensors is implemented using singleton pattern and threads from Qt QThreads class. All the protocols except one work fine. Each protocol's run function for thread has following structure: void <ProtocolClassName>::run() { while(!mStop) //check whether screen is closed or not { mutex.lock() while(!waitcondition.wait(&mutex,5)) { if(mStop) return; } //Code for receiving and processing incoming data mutex.unlock(); } //end while } Hierarchy of GUI. 1.Login screen. 2. Screen of action. When a user logs in from login screen, we enter the action screen where all data is displayed and all the thread's for different sensors start. They wait on mStop variable in idle time and when data arrives they jump to receiving and processing data. Incoming data for the problem protocol is 117 bytes. In the main GUI threads there are timers which when timeout, grab the running instance of protocol using <ProtocolName>::instance() function Check the update variable of singleton class if its true and display the data. When the data display is done they reset the update variable in singleton class to false. The problematic protocol has the update time of 1 sec, which is also the frame rate of protocol. When I comment out the display function it runs fine. But when display is activated the application hangs consistently after 6-7 hours. I have asked this question on many forums but haven't received any worthwhile suggestions. I Hope that here I will get some help. Also, I have read a lot of literature on Singleton, multithreading, and found that people always discourage the use of singletons especially in C++. But in my application I can think of no other design for implementation. Thanks in advance A Hapless programmer

  Read the article

< Previous Page | 35 36 37 38 39 40 41 42 43 44 45 46  | Next Page >