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• simple Stata program

  - by Cyrus S

  I am trying to write a simple program to combine coefficient and standard error estimates from a set of regression fits. I run, say, 5 regressions, and store the coefficient(s) and standard error(s) of interest into vectors (Stata matrix objects, actually). Then, I need to do the following: Find the mean value of the coefficient estimates. Combine the standard error estimates according to the formula suggested for combining results from "multiple imputation". The formula is the square root of the formula for "T" on page 6 of the following document: http://bit.ly/b05WX3 I have written Stata code that does this once, but I want to write this as a function (or "program", in Stata speak) that takes as arguments the vector (or matrix, if possible, to combine multiple estimates at once) of regression coefficient estimates and the vector (or matrix) of corresponding standard error estimates, and then generates 1 and 2 above. Here is the code that I wrote: (breg is a 1x5 vector of the regression coefficient estimates, and sereg is a 1x5 vector of the associated standard error estimates) mat ones = (1,1,1,1,1) mat bregmean = (1/5)*(ones*breg’) scalar bregmean_s = bregmean[1,1] mat seregmean = (1/5)*(ones*sereg’) mat seregbtv = (1/4)*(breg - bregmean#ones)* (breg - bregmean#ones)’ mat varregmi = (1/5)*(sereg*sereg’) + (1+(1/5))* seregbtv scalar varregmi_s = varregmi[1,1] scalar seregmi = sqrt(varregmi_s) disp bregmean_s disp seregmi This gives the right answer for a single instance. Any pointers would be great! UPDATE: I completed the code for combining estimates in a kXm matrix of coefficients/parameters (k is the number of parameters, m the number of imputations). Code can be found here: http://bit.ly/cXJRw1 Thanks to Tristan and Gabi for the pointers.

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• Java complex validation in Dropwizard?

  - by miku

  I'd like to accept JSON on an REST endpoint and convert it to the correct type for immediate validation. The endpoint looks like this: @POST public Response createCar(@Valid Car car) { // persist to DB // ... } But there are many subclasses of Car, e.g. Van, SelfDrivingCar, RaceCar, etc. How could I accept the different JSON representations on the endpoint, while keeping the validation code in the Resource as concise as something like @Valid Car car? Again: I send in JSON like (here, it's the representation of a subclass of Car, namely SelfDrivingCar): { "id" : "t1", // every Car has an Id "kind" : "selfdriving", // every Car has a type-hint "max_speed" : "200 mph", // some attribute "ai_provider" : "fastcarsai ltd." // this is SelfDrivingCar-specific } and I'd like the validation machinery look into the kind attribute, create an instance of the appropriate subclass, here e.g. SelfDrivingCar and perform validation. I know I could create different endpoints for all kind of cars, but thats does not seem DRY. And I know that I could use a real Validator instead of the annotation and do it by hand, so I'm just asking if there's some elegant shortcut for this problem.

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• Session variables with Cucumber Stories

  - by Matthew Savage

  I am working on some Cucumber stories for a 'sign up' application which has a number of steps. Rather then writing a Huuuuuuuge story to cover all the steps at once, which would be bad, I'd rather work through each action in the controller like a regular user. My problem here is that I am storing the account ID which is created in the first step as a session variable, so when step 2, step 3 etc are visited the existing registration data is loaded. I'm aware of being able to access controller.session[..] within RSpec specifications however when I try to do this in Cucumber stories it fails with the following error (and, I've also read somewhere this is an anti-pattern etc...): Using controller.session[:whatever] or session[:whatever] You have a nil object when you didn't expect it! The error occurred while evaluating nil.session (NoMethodError) Using session(:whatever) wrong number of arguments (1 for 0) (ArgumentError) So, it seems accession the session store isn't really possible. What I'm wondering is if it might be possible to (and I guess which would be best..): Mock out the session store etc Have a method within the controller and stub that out (e.g. get_registration which assigns an instance variable...) I've looked through the RSpec book (well, skimmed) and had a look through WebRat etc, but I haven't really found an answer to my problem... To clarify a bit more, the signup process is more like a state machine - e.g. the user progresses through four steps before the registration is complete - hence 'logging in' isn't really an option (it breaks the model of how the site works)... In my spec for the controller I was able to stub out the call to the method which loads the model based on the session var - but I'm not sure if the 'antipattern' line also applies to stubs as well as mocks? Thanks!

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• Problem running RoR app in production environment

  - by normalocity

  Have an app that has "listings" - think classified ads - and each listing has a list of tags. The following code fails when I run the app in production mode, but works fine under development mode uninitialized constant ActiveRecord::Acts::Taggable::InstanceMethods::TagList Extracted source (around line #45): 42: 43: <span class="listingIndexTags"> 44: Location: [location] | Tags: 45: <% tag_list = listing.tag_list %> 46: <% if tag_list != nil %> 47: <% for tag in tag_list %> 48: <%= link_to tag.to_s, { :action => "filter_on", The command line I'm using to start my mongrel instance in this test case: ruby script/server mongrel -e development Defaults to port 3000. I can access other views in the app that DON'T call "listing.tag_list". ".tag_list" is provided by "acts_as_taggable_on_steroids", which I'm using in this app. It is installed as a gem. Maybe my environment files are wonky? Here's my development.rb file config.cache_classes = false config.whiny_nils = true config.action_controller.consider_all_requests_local = true config.action_view.debug_rjs = true config.action_controller.perform_caching = false config.action_mailer.raise_delivery_errors = true config.action_mailer.delivery_method = :smtp config.action_mailer.smtp_settings = { ...took these settings out for this post... } And my production.rb file... config.cache_classes = true config.threadsafe! config.action_controller.consider_all_requests_local = false config.action_controller.perform_caching = true config.cache_store = :mem_cache_store config.action_mailer.raise_delivery_errors = false config.action_mailer.delivery_method = :smtp config.action_mailer.smtp_settings = { ...took these settings out for this post... }

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• Big problem with regular expression in Lex (lexical analyzer)

  - by Nazgulled

  Hi, I have some content like this: author = "Marjan Mernik and Viljem Zumer", title = "Implementation of multiple attribute grammar inheritance in the tool LISA", year = 1999 author = "Manfred Broy and Martin Wirsing", title = "Generalized Heterogeneous Algebras and Partial Interpretations", year = 1983 author = "Ikuo Nakata and Masataka Sassa", title = "L-Attributed LL(1)-Grammars are LR-Attributed", journal = "Information Processing Letters" And I need to catch everything between double quotes for title. My first try was this: ^(" "|\t)+"title"" "*=" "*"\"".+"\"," Which catches the first example, but not the other two. The other have multiple lines and that's the problem. I though about changing to something with \n somewhere to allow multiple lines, like this: ^(" "|\t)+"title"" "*=" "*"\""(.|\n)+"\"," But this doesn't help, instead, it catches everything. Than I though, "what I want is between double quotes, what if I catch everything until I find another " followed by ,? This way I could know if I was at the end of the title or not, no matter the number of lines, like this: ^(" "|\t)+"title"" "*=" "*"\""[^"\""]+"," But this has another problem... The example above doesn't have it, but the double quote symbol (") can be in between the title declaration. For instance: title = "aaaaaaa \"X bbbbbb", And yes, it will always be preceded by a backslash (\). Any suggestions to fix this regexp?

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• Maven: compile aspectj project containing Java 1.6 source

  - by gmale

  What I want to do is fairly easy. Or so you would think. However, nothing is working properly. Requirement: Using maven, compile Java 1.6 project using AspectJ compiler. Note: Our code cannot compile with javac. That is, it fails compilation if aspects are not woven in (because we have aspects that soften exceptions). Questions (based on failed attempts below): Either 1) How do you get maven to run the aspectj:compile goal directly, without ever running compile:compile? 2) How do you specify a custom compilerId that points to your own ajc compiler? Thanks for any and all suggestions. These are the things I've tried that have let to my problem/questions: Attempt 1 (fail): Specify aspectJ as the compiler for the maven-compiler-plugin: org.apache.maven.plugins maven-compiler-plugin 2.2 1.6 1.6 aspectj org.codehaus.plexus plexus-compiler-aspectj 1.8 This fails with the error: org.codehaus.plexus.compiler.CompilerException: The source version was not recognized: 1.6 No matter what version of the plexus compiler I use (1.8, 1.6, 1.3, etc), this doesn't work. I actually read through the source code and found that this compiler does not like source code above Java 1.5. Attempt 2 (fail): Use the aspectJ-maven-plugin attached to the compile and test-compile goals: org.codehaus.mojo aspectj-maven-plugin 1.3 1.6 1.6 compile test-compile This fails when running either: mvn clean test-compile mvn clean compile because it attempts to execute compile:compile before running aspectj:compile. As noted above, our code doesn't compile with javac--the aspects are required. So mvn would need to skip the compile:compile goal altogether and run only aspectj:compile. Attempt 3 (works but unnacceptable): Use the same configuration above but instead run: mvn clean aspectj:compile This works, in that it builds successfully but it's unacceptable in that we need to be able to run the compile goal and the test-compile goal directly (m2eclipse auto-build depends on those goals). Moreover, running it this way would require that we spell out every goal we want along the way (for instance, we need resources distributed and tests to be run and test resources deployed, etc)

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• How to I get the value of a custom soap header in WCF

  - by Jason Coyne

  I have created a custom soap header, and added it into my message via IClientMessageInspector public object BeforeSendRequest(ref System.ServiceModel.Channels.Message request, System.ServiceModel.IClientChannel channel) { var header = new MessageHeader<AuthHeader>(); header.Content = new AuthHeader(Key); header.Actor = "Anyone"; var header2 = header.GetUntypedHeader("Auth", "xWow"); request.Headers.Add(header2); return null; } [DataContract(Name="Auth")] public class AuthHeader { public AuthHeader(string key) { this.Key = key; } [DataMember] public string Key { get; set; } } I also have an IDispatchMessageInspector, and I can find the correct header in the list. However, there is no value. I know that the value went across the wire correctly, because the message string is correct <s:Envelope xmlns:s=\"http://schemas.xmlsoap.org/soap/envelope/\">\r\n <s:Header>\r\n <Auth s:actor=\"Anyone\" xmlns=\"xWow\" xmlns:i=\"http://www.w3.org/2001/XMLSchema-instance\">\r\n <Key xmlns=\"http://schemas.datacontract.org/2004/07/xWow.Lib\">HERE IS MY KEY VALUE!!!!</Key>\r\n </Auth>\r\n <To s:mustUnderstand=\"1\" xmlns=\"http://schemas.microsoft.com/ws/2005/05/addressing/none\">http://localhost:26443/AuthService.svc</To>\r\n <Action s:mustUnderstand=\"1\" xmlns=\"http://schemas.microsoft.com/ws/2005/05/addressing/none\">http://tempuri.org/IAuthService/GetPayload</Action>\r\n </s:Header>\r\n <s:Body>\r\n <GetPayload xmlns=\"http://tempuri.org/\" />\r\n </s:Body>\r\n</s:Envelope>" But there does not seem to be any property to retrieve this value. The MessageHeaderInfo class has Actor, etc, but nothing else useful I can find. On the client side I had to convert between Header and Untyped header, is there an equivalent operation on the server?

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• Executing MSYS from cmd.exe with arguments

  - by Chris Allison

  Hi, I am trying to learn wxWidgets library, using mingw and msys to compile the code. So far so good, but I can not find a way to send a command to MSYS through CMD.exe. I use SublimeText to edit files, and it has an option to run makefiles. I want my makefiles to be able to open an instance of MSYS and send the g++ command and arguments to it. Example: Right now my makefile is: test.exe : main.cpp g++ -s main.cpp -o test.exe `wx-config --cxxflags` `wx-config --libs` When mingw32-make goes to run the g++ command, it sends it to cmd.exe, which doesn't handle the back-ticks and wx-config jazz. (But the command does work when run from inside MSYS and the directory holding main.cpp) I want to be able to use something like... msys --command g++ -s main.cpp*...etc..* so it will load the msys enviroment, and run the command. Is this possible? I am a huge makefile newbie, so if there is an easier way, please show me! TIA!

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• How to write a C program using the fork() system call that generates the Fibonacci sequence in the

  - by Ellen

  The problem I am having is that when say for instance the user enters 7, then the display shows: 0 11 2 3 5 8 13 21 child ends. I cannot seem to figure out how to fix the 11 and why is it displaying that many numbers in the sequence! Can anyone help? The number of the sequence will be provided in the command line. For example, if 5 is provided, the first five numbers in the Fibonacci sequence will be output by the child process. Because the parent and child processes have their own copies of the data, it will be necessary for the child to output the sequence. Have the parent invoke the wait() call to wait for the child process to complete before exiting the program. Perform necessary error checking to ensure that a non-negative number is passed on the command line. #include <stdio.h> #include <sys/types.h> #include <unistd.h> int main() { int a=0, b=1, n=a+b,i,ii; pid_t pid; printf("Enter the number of a Fibonacci Sequence:\n"); scanf("%d", &ii); if (ii < 0) printf("Please enter a non-negative integer!\n"); else { pid = fork(); if (pid == 0) { printf("Child is producing the Fibonacci Sequence...\n"); printf("%d %d",a,b); for (i=0;i<ii;i++) { n=a+b; printf("%d ", n); a=b; b=n; } printf("Child ends\n"); } else { printf("Parent is waiting for child to complete...\n"); wait(NULL); printf("Parent ends\n"); } } return 0; }

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• Highlighting a Table Correctly Despite rowspan and colspan attributes - WITHOUT jQuery

  - by ScottSEA

  Thanks to some !#$#@ in another department who wrote some crap code, I am unable to use the jQuery library - despite my fervent desire to do so. Their software has already been released into the world, and I have to be compatible. ============================================ I am trying to highlight a table. Desired behavior: Clicking on a cell in the body highlights the row. Clicking on a cell in the head highlights the column. If a column and row are both highlighted, the intersection is highlighted a different color (super-highlight). Clicking on a previously super-highlighted cell turns off the highlights. This behavior is simple enough to do with a basic table, but when rowspans and colspans start rearing their ugly heads, things start to get a little wonky... highlighting cell[5], for instance, no longer works reliably. My thought, in order to speed execution time of the highlighting itself (by changing a class name), is to pre-calculate the 'offsets' of all cells - with a 'colStart' and 'colEnd', 'rowStart' and 'rowEnd' when the page loads and store that in an array somehow. The question: How would YOU implement this functionality? I am fairly rusty at my JavaScript, awfully rudimentary in my programming skills and would benefit greatly from some guidance. Thanks, Scott.

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• Practical value for concurrent-request-timeout parameter

  - by Andrei

  In the Seam Reference Guide, one can find this paragraph: We can set a sensible default for the concurrent request timeout (in ms) in components.xml: <core:manager concurrent-request-timeout="500" /> However, we found that 500 ms is not nearly enough time for most of the cases we had to deal with, especially with the severe restriction seam places on conversation access. In our application we have a combination of page scoped ajax requests (triggered by various use actions), some global scoped polling notification logic (part of the header, so included in every page) and regular links that invoke actions and/or navigate to other pages. Therefore, we get the dreaded concurrent access to conversation exception way too often, even without any significant load on the site. After researching the options for quite a bit, we ended up bumping this value to several seconds (we're debating whether to bump it up to 10s), as none of the recommended solutions seemed able to solve our issue completely (even forcing a global queue for all the ajax requests would still leave us exposed to a user deciding to click a link right when one of our polling calls was in progress). And we'd much rather have the users wait for a second or two instead of getting an error page just because they clicked a link at the wrong moment. And now to the question: is there something obvious we're missing (like a way to allow concurrent access to conversations and taking care of the needed locking ourselves, for instance :)? How do people solve this problem (ajax requests mixed with user driven interaction) in seam? Disabling all the links on the page while ajax requests are in progress (as suggested by one blog page) is really not a viable option. Any other suggestions? TIA, Andrei

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• NSIS takes ownership of IIS system files

  - by Lucas

  I recently encountered an issue with NSIS that I believe is related to an interaction with UAC, but I am at a loss to explain it and I do not know how to prevent it in the future. I have an installer that creates and removes IIS virtual directories using the NsisIIS plugin. The installer appeared worked correctly on my Windows 7 workstation. When the installer was run on a Windows 2008 R2 server it installed properly, but the uninstaller removed all of the virtual directories and put IIS is an unusable state; to the point that I had to remove the Default Web Site and re-add it. What I eventually found was that all of the IIS configuration files under C:\Windows\System32\inetsrv\config had a lock icon on them. Some investigation seem to indicate that this means a user account has taken ownership of the file, however all the files listed SYSTEM as the file owner. I did check a different server that I have not run the installer on, and it does not have the lock icon applied to the IIS files. I have also seen the same lock icon appear on other files that the NSIS installer creates. For instance, I have a Web.Config.tpl file that is processed using the NSIS ReplaceInFile which also appears with the lock icon after the installer finished. After I explicitly grant another user account access to the file, the lock icon goes away. I run the installer under the local Administrator account on the 2008 R2 server, so I do not get the UAC prompt. Here is the relevant code from the install.nsi file RequestExecutionLevel admin Section "Application" APP_SECTION SectionIn RO Call InstallApp SectionEnd Section "un.Uninstaller Section" Delete "$PROGRAMFILES\${PROGRAMFILESDIR}\Uninstall.exe" Call un.InstallApp SectionEnd Function InstallApp File /oname=Web.Config Web.Config.tpl !insertmacro ReplaceInFile Web.Config %CONNECTION_STRING% $CONNECTION_STRING FunctionEnd Function un.InstallApp ReadRegStr $0 HKLM "Software\${REGKEY}" "VirtualDir" NsisIIS::DeleteVDir "$0" Pop $0 FunctionEnd I have three questions stemming from this incident: How did this happen? How can I fix my installer to prevent it from happening again? How can I repair the permissions on the IIS config files.

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• Can't connect to SQL Server 2008 - looks like Shared Memory problem

  - by Proposition Joe

  I am unable to connect to my local instance of SQL Server 2008 Express using SQL Server Management Studio. I believe the problem is related to a change I made to the connection protocols. Before the error occurred, I had Shared Memory enabled and Named Pipes and TCP/IP disabled. I then enabled both Named Pipes and TCP/IP, and this is when I started experiencing the problem. When I try to connect to the server with SSMS (with either my SQL server sysadmin login or with windows authentication), I get the following error message: A connection was successfully established with the server, but then an error occurred during the login process. (provider: Named Pipes Provider, error: 0 - No process is on the other end of the pipe.) (Microsoft SQL Server, Error: 233) Why is it returning a Named Pipes error? Why would it not just use Shared Memory, as this has a higher priority order in the list of connection protocols? It seems like it is not listening on Shared Memory for some reason? When I set Named Pipes to enabled and try to connect, I get the same error message. My windows account is does not have administrator priviliges on my computer - perhaps this is making a difference in some way (as some of the discussions in this post about an "SuperSocketNetLib\Lpc" registry key seems to suggest).

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• Creating A Single Generic Handler For Agatha?

  - by David

  I'm using the Agatha request/response library (and StructureMap, as utilized by Agatha 1.0.5.0) for a service layer that I'm prototyping, and one thing I've noticed is the large number of handlers that need to be created. It generally makes sense that any request/response type pair would need their own handler. However, as this scales to a large enterprise environment that's going to be A LOT of handlers. What I've started doing is dividing up the enterprise domain into logical processor classes (dozens of processors instead of many hundreds or possibly eventually thousands handlers). The convention is that each request/response type (all of which inherit from a domain base request/response pair, which inherit from Agatha's) gets exactly one function in a processor somewhere. The generic handler (which inherits from Agatha's RequestHandler) then uses reflection in the Handle method to find the method for the given TREQUEST/TRESPONSE and invoke it. If it can't find one or if it finds more than one, it returns a TRESPONSE containing an error message (messages are standardized in the domain's base response class). The goal here is to allow developers across the enterprise to just concern themselves with writing their request/response types and processor functions in the domain and not have to spend additional overhead creating handler classes which would all do exactly the same thing (pass control to a processor function). However, it seems that I still need to have defined a handler class (albeit empty, since the base handler takes care of everything) for each request/response type pair. Otherwise, the following exception is thrown when dispatching a request to the service: StructureMap Exception Code: 202 No Default Instance defined for PluginFamily Agatha.ServiceLayer.IRequestHandler`1[[TSFG.Domain.DTO.Actions.HelloWorldRequest, TSFG.Domain.DTO, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null]], Agatha.ServiceLayer, Version=1.0.5.0, Culture=neutral, PublicKeyToken=6f21cf452a4ffa13 Is there a way that I'm not seeing to tell StructureMap and/or Agatha to always use the base handler class for all request/response type pairs? Or maybe to use Reflection.Emit to generate empty handlers in memory at application start just to satisfy the requirement? I'm not 100% familiar with these libraries and am learning as I go along, but so far my attempts at both those possible approaches have been unsuccessful. Can anybody offer some advice on solving this, or perhaps offer another approach entirely?

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• fabric deploy problem

  - by alexarsh

  Hi, I'm trying to deploy a django app with fabric and get the following error: Alexs-MacBook:fabric alex$ fab config:instance=peergw deploy -H <ip> - u <username> -p <password> [192.168.2.93] run: cat /etc/issue Traceback (most recent call last): File "build/bdist.macosx-10.6-universal/egg/fabric/main.py", line 419, in main File "/Users/alex/Rabota/server/mx30/scripts/fabric/fab/ commands.py", line 37, in deploy checkup() File "/Users/alex/Rabota/server/mx30/scripts/fabric/fab/ commands.py", line 140, in checkup if not 'Ubuntu' in run('cat /etc/issue'): File "build/bdist.macosx-10.6-universal/egg/fabric/network.py", line 382, in host_prompting_wrapper File "build/bdist.macosx-10.6-universal/egg/fabric/operations.py", line 414, in run File "build/bdist.macosx-10.6-universal/egg/fabric/network.py", line 65, in __getitem__ File "build/bdist.macosx-10.6-universal/egg/fabric/network.py", line 140, in connect File "build/bdist.macosx-10.6-universal/egg/paramiko/client.py", line 149, in load_system_host_keys File "build/bdist.macosx-10.6-universal/egg/paramiko/hostkeys.py", line 154, in load File "build/bdist.macosx-10.6-universal/egg/paramiko/hostkeys.py", line 66, in from_line File "build/bdist.macosx-10.6-universal/egg/paramiko/rsakey.py", line 61, in __init__ paramiko.SSHException: Invalid key Alexs-MacBook:fabric alex$ I can't connect to the server via ssh. What can be my problem? Regards, Arshavski Alexander.

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• Interface Marshalling in Delphi

  - by cemick

  I want to send Interface Ref of IVApplication from Visio Add-in to my other one COM server. But I have Ole exception. Now i do that: Code in Visio Add-in: var IStrm: IStream; hres: HResult; rhglobal: HGLOBAL; VisioAppl: IVApplication; begin hres := CreateStreamOnHGlobal(0, TRUE, IStrm); if Succeeded(hres) then hres := CoMarshalInterface(IStrm, IID_IVApplication, VisioAppl, MSHCTX_LOCAL, 0, MSHLFLAGS_NORMAL); if (Succeeded(hres)) then begin hres := GetHGlobalFromStream(IStrm, rhglobal); IStrm := nil; end; end; After this I create instance of my COM server and pass rhglobal to him. Code of my COM server: procedure (AHGlobal: HGlobal); var VisioAppl: Visio_TLB.IVApplication; iStrm: IStream; hres: HResult; begin iStrm := Nil; VisioAppl:= nil; hres := CreateStreamOnHGlobal(AHGlobal, FALSE, iStrm); if (SUCCEEDED(hres)) then begin hres := CoUnmarshalInterface(iStrm, Visio_TLB.IVApplication, VisioAppl); iStrm := nil; ShowMessage('Result:' + BoolToStr(SUCCEEDED(hres))); <-- result 0 ShowMessage(VisioAppl.ProductName); <---- Error end; end;

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• Visibility of Class field-data of Mouse Clicked ImageButton located within WrapPanel

  - by Bill

  I am attempting to obtain the class-data behind an ImageButton that is mouse-clicked; which ImageButton is located within a WrapPanel filled with ImageButtons. The problem I am having is obtaining the visibility of the field data within the class behind the image-button. Although I can see the class, I can neither see nor access the field data. Can anyone please point me in the right direction? // Handles the ImageButton mouseClick event within the WrapPanel. private void SolarSystem_Click(Object sender, RoutedEventArgs e) { FrameworkElement fe = e.OriginalSource as FrameworkElement; SelectedPlanet PlanetSelected = new SelectedPlanet(fe); PlanetSelected.Owner = this; MessageBox.Show(PlanetSelected.PlanetName); } // Used to initiate instance of Class and some field data. public SelectedPlanet(FrameworkElement fe) { InitializeComponent(); string sPlanetName = ((PlanetClass)(fe)).PlanetName; return sPlanetName } // Class Data public class PlanetClass { string planetName; public PlanetClass(string planetName) { PlanetName = planetName; } public string PlanetName { set { planetName = value; } get { return planetName; } } }

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• simpletest - Why does setReturnValue() seem to change behaviour depending on if test is run in isola

  - by JW

  I am using SimpleTest version 1.0.1 for a unit test. I create a new mock object within a test method and on it i do: $MockDbAdaptor->setReturnValue('query',1); Now, when i run this in a standalone unit test my tested object is happy to see 1 returned when query() is called on the mock db adaptor. However, when this exact same test is run as part of my 'all_tests' TestSuite, the test is failing. This happens because a call to the mock's query() method does not appear to return any value - thus causing my test subject to complain and trigger an unexpected exception that fails the test. So, the behaviour of setReturnValue() seems to change depending on whether the test is run in isolation or not. I can get it to work in both a standalone and TestSuite contexts by using this instead: $MockDbAdaptor->setReturnValueAt(0,'query',1); So my immediate problem can be fixed ...but it feels like a hack. I thought if i create a new mock within a test method then why is the setReturnValue() behaviour getting affected by the context in which the test class instance is run? It feel like a bug.

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• ws-xmlrpc claims error on part of service but other clients work fine

  - by mludd

  I've been trying to connect to an rTorrent instance using ws-xmlrpc and it just isn't going too well. Now, the URL I'm using is the same that I've been using when making sure that rTorrent's XMLRPC support is fine (which it appears to be since both a native OS X application and a small python script I threw together appear to be able to talk to it just fine without any errors). However, when I try using ws-xmlrpc to connect I get org.apache.xmlrpc.XmlRpcException: Failed to create input stream: Unexpected end of file from serverat the top of my stack trace followed by a bunch of steps down to: java.net.SocketException: Unexpected end of file from server at sun.net.www.http.HttpClient.parseHTTPHeader(HttpClient.java:769) ... So basically, it seems that ws-xmlrpc is convinced that the reply from rTorrent is malformed somehow but other libraries apparently have no problem with it. The code I use to call rTorrent is: private Object callRTorrent(String command, Object[] params) { Object result = null; try { // xmlrpcclient is an XmlRpcClient object and is instantied in // the class constructor result = xmlrpcclient.execute(command, params); } catch(XmlRpcException xre) { System.out.println("Unable to execute method "+command); xre.printStackTrace(); } return result; } With command set to system.listMethodsand params set to an empty Object[]. From reading documentation and googling my conclusion is that I'm not doing anything obviously wrong and this problem doesn't appear to be common, so does anyone have a clue what's going on here?

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• Problem merging similar XML files with XSL

  - by LOlliffe

  I have two documents that I need to merge, that happen in a way that I don't seem to be able to find covered in other examples. Namely, that it needs to match not only on a node's attribute at one level, but also on the value of an attribute a node level below that, to get that node's value. I'm trying to take this sample: <?xml version="1.0" encoding="UTF-8" ?> <marc:collection xmlns:marc="http://www.loc.gov/MARC21/slim" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"> <marc:record> <marc:datafield tag="035" ind1=" " ind2=" "> <marc:subfield code="a">12345</marc:subfield> </marc:datafield> <marc:datafield tag="041" ind1=" " ind2=" "> <marc:subfield code="a">eng</marc:subfield> </marc:datafield> <marc:datafield tag="650" ind1=" " ind2="4"> <marc:subfield code="a">Art</marc:subfield> </marc:datafield> <marc:datafield tag="949" ind1=" " ind2=" "> <marc:subfield code="i">Review of conference proceedings</marc:subfield> </marc:datafield> </marc:record> <marc:record> <marc:datafield tag="035" ind1=" " ind2=" "> <marc:subfield code="a">54321</marc:subfield> </marc:datafield> <marc:datafield tag="041" ind1=" " ind2=" "> <marc:subfield code="a">eng</marc:subfield> </marc:datafield> <marc:datafield tag="650" ind1=" " ind2="4"> <marc:subfield code="a">Byzantine</marc:subfield> </marc:datafield> </marc:record> </marc:collection> And when the value of "datafield" '035', "subfield" 'a' matches e.g. "12345" <marc:collection xmlns:marc="http://www.loc.gov/MARC21/slim" xmlns:fn="http://www.w3.org/2005/xpath-functions" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:fo="http://www.w3.org/1999/XSL/Format"> <marc:record> <marc:datafield ind2=" " ind1=" " tag="035"> <marc:subfield code="a">12345</marc:subfield> </marc:datafield> <marc:datafield ind2="4" ind1=" " tag="650"> <marc:subfield code="a">General works</marc:subfield> <marc:subfield code="x">Historians and critics</marc:subfield> <marc:subfield code="x">Smith, John, 1834-1917</marc:subfield> </marc:datafield> <marc:datafield ind2="4" ind1=" " tag="650"> <marc:subfield code="a">Généralités</marc:subfield> <marc:subfield code="x">Historiens et critiques d'art</marc:subfield> <marc:subfield code="x">Dietrichson, Lorentz, 1834-1917</marc:subfield> </marc:datafield> <marc:datafield ind2=" " ind1=" " tag="654"> <marc:subfield code="a">General works</marc:subfield> </marc:datafield> <marc:datafield ind2=" " ind1=" " tag="654"> <marc:subfield code="a">Généralités</marc:subfield> <marc:subfield code="b">Historiens et critiques d'art</marc:subfield> <marc:subfield code="b">Smith, John, 1834-1917</marc:subfield> </marc:datafield> </marc:record> <marc:record> <marc:datafield ind2=" " ind1=" " tag="035"> <marc:subfield code="a">54321</marc:subfield> </marc:datafield> <marc:datafield ind2="4" ind1=" " tag="650"> <marc:subfield code="a">General works</marc:subfield> <marc:subfield code="x">Historians and critics</marc:subfield> <marc:subfield code="x">Lange, Julius Henrik, 1838-1896</marc:subfield> </marc:datafield> </marc:record> </marc:collection> The result should be: <?xml version="1.0" encoding="UTF-8" ?> <marc:collection xmlns:marc="http://www.loc.gov/MARC21/slim" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"> <marc:record> <marc:datafield tag="035" ind1=" " ind2=" "> <marc:subfield code="a">12345</marc:subfield> </marc:datafield> <marc:datafield tag="041" ind1=" " ind2=" "> <marc:subfield code="a">eng</marc:subfield> </marc:datafield> <marc:datafield tag="650" ind1=" " ind2="4"> <marc:subfield code="a">Art</marc:subfield> </marc:datafield> <marc:datafield ind2="4" ind1=" " tag="650"> <marc:subfield code="a">General works</marc:subfield> <marc:subfield code="x">Historians and critics</marc:subfield> <marc:subfield code="x">Smith, John, 1834-1917</marc:subfield> </marc:datafield> <marc:datafield ind2="4" ind1=" " tag="650"> <marc:subfield code="a">Généralités</marc:subfield> <marc:subfield code="x">Historiens et critiques d'art</marc:subfield> <marc:subfield code="x">Dietrichson, Lorentz, 1834-1917</marc:subfield> </marc:datafield> <marc:datafield ind2=" " ind1=" " tag="654"> <marc:subfield code="a">General works</marc:subfield> </marc:datafield> <marc:datafield ind2=" " ind1=" " tag="654"> <marc:subfield code="a">Généralités</marc:subfield> <marc:subfield code="b">Historiens et critiques d'art</marc:subfield> <marc:subfield code="b">Smith, John, 1834-1917</marc:subfield> </marc:datafield> <marc:datafield tag="949" ind1=" " ind2=" "> <marc:subfield code="i">Review of conference proceedings</marc:subfield> </marc:datafield> </marc:record> <marc:record> <marc:datafield tag="035" ind1=" " ind2=" "> <marc:subfield code="a">54321</marc:subfield> </marc:datafield> <marc:datafield tag="041" ind1=" " ind2=" "> <marc:subfield code="a">eng</marc:subfield> </marc:datafield> <marc:datafield tag="650" ind1=" " ind2="4"> <marc:subfield code="a">Byzantine</marc:subfield> </marc:datafield> <marc:datafield ind2="4" ind1=" " tag="650"> <marc:subfield code="a">General works</marc:subfield> <marc:subfield code="x">Historians and critics</marc:subfield> <marc:subfield code="x">Lange, Julius Henrik, 1838-1896</marc:subfield> </marc:datafield> </marc:record> </marc:collection> I've tried using examples that I've found that did lookups, but none of them seemed to work. I didn't include any of my XSL, because all of my results were disasterous. I keep looking at it, like it must be simple, but I'm just not getting any decent results. Any help or pointers would be greatly appreciated. Thanks!

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• Beginner video capture and processing/Camera selection

  - by mattbauch

  I'll soon be undertaking a research project in real-time event recognition but have no experience with the programming aspect of video capture (I'm an upperclassman undergraduate in computer engineering). I want to start off on the right foot so advice from anyone with experience would be great. The ultimate goal is to track events such as a person standing up/sitting down, entering/leaving a room, possibly even shrugging/slumping in posture, etc. from a security camera-like vantage point. First of all, which cameras/companies would you recommend? I'm looking to spend ~$100, more if necessary but not much. Great resolution isn't a must, but is desirable if affordable. What about IP network cameras vs. a USB type webcam? Webcams are less expensive, but IP cameras seem like they'd be much less work to deal with in software. What features should I look for in the camera? Once I've selected a camera, what does converting its output to a series of RGB bitmaps entail? I've never dealt with video encoding/decoding so a starting point or a tutorial that will guide me up to this point would be great if anyone has suggestions. Finally, what is the best (least complicated/most efficient) way to display video from the camera plus my own superimposed images (boxes around events in progress, for instance) in a GUI application? I can work on any operating system in any language. I have some experience with win32 GUIs and Java GUIs. The focus of the project is on the algorithm and so I'm trying to get the video capture/display portion of the app done cleanly and quickly. Thanks for any responses!!

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• Update table columns bound to NSArrayController

  - by Loz

  Hi, I'm fairly new to the world of bindings in cocoa, and I'm having some troubles (perhaps/probably due to a misunderstanding). I have a singleton that contains an NSMutableArray called plugins, containing objects of class Plugin. It has a method called loadPlugins which adds objects to the plugins array. This may be called at any point. It's been added as an instance in Interface Builder. Also in IB is an NSObjectController, whose content outlet is connected to the singleton. There is also an NSArrayController, whose contentArray is bound to the NSObjectController (controller key is 'selection', model key path is 'plugins', object class name is 'Plugin'). And finally I have a table view with 2 columns, the values of which are bound to the NSArrayController's arrangedObjects, using keys of properties in the Plugin class. So far so standard (as far as I can tell from tutorials at least). My trouble is that when the loadPlugins method is called in the singleton, and objects are added to the plugins array, the table doesn't update to show the objects (unless loadPlugins is called before the nib is loaded). -reloadData called on the tableView doesn't do anything. Is there a way to tell the NSArrayController that the referenced array has been updated? I understand there is the -add: method for NSArrayController, which could be used in the loadPlugins, but this isn't desirable as I want to keep the singleton totally separate from the display aspect. This seems related to: http://stackoverflow.com/questions/1623396/refresh-cocoa-binding-nsarraycontroller-combobox The line: "editing the array behind the controller's back" seems to perhaps pinpoint the problem, but I would hope that it would be possible to have the singleton not know about the controller. Thanks in advance.

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• ASP.NET MVC TextBoxFor helper rendering empty when null

  - by mare

  I noticed that TextBoxFor helper renders empty if there is no model, like for instance when I have a CreateEdit ViewUserControl. When in Edit view fields are filled in, when in Create fields are empty but still rendered. The problem is TextBoxFor does not accept different Id for its name (the same as LabelFor and others, but for LabelFor I have custom Html helpers). So in some case we still have to use regular Html.TextBox helper. The problem is if I write this <%=Html.TextBox("postname", Model.PostCode.postname, new { @class = "postsDropDown" })%> an error occurs in Create view (obviously). So I have to do this: <% if (Model != null) %> <%=Html.TextBox("postname", Model.PostCode.postname, new { @class = "postsDropDown" })%> <% else %> <%=Html.TextBox("postname", null, new { @class = "postsDropDown" })%> Now that is something which I don't like anymore (the IF's). Is this the only way to do it? I know I could extend TextBoxFor helpers also but seems like so much trouble. In the end we will come to extending all of the "For" helpers but I think this should be done by ASP.NET MVC team already (built-in).

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• Monotouch serialize UIImage

  - by cvista

  Hi I need to cache images locally and was thinking about saving them as SerializableDictionary SerializableDictionary is from: http://weblogs.asp.net/pwelter34/archive/2006/05/03/444961.aspx I was wondering if this was a: a good way of handling caching of images (for offline mode - the data is constantly updated so pulls from the web first). b: how can i do this? I seem to be only left with the following xml: <?xml version="1.0" encoding="us-ascii"?> <dictionary> <item> <key> <string>http://img.theguidestar.com/thumb/491520.png</string> </key> <value> <UIImage xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema"> <Handle /> <Size> <Width>0</Width> <Height>0</Height> </Size> </UIImage> </value> </item> </dictionary> Is there anything specific i should be doing to make it serialize the image itself? w://

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• Why can't I send SOAP requests to Ebay finding API with this php?

  - by Jay

  This is my code: <?php error_reporting(E_ALL); //new instance of soapClient pointing to Ebay finding api $client = new SoapClient("http://developer.ebay.com/webservices/finding/latest/FindingService.wsdl"); //attach required parameters to soap message header $header_arr = array(); $header_arr[] = new SoapHeader("X-EBAY-SOA-MESSAGE-PROTOCOL", "SOAP11"); $header_arr[] = new SoapHeader("X-EBAY-SOA-SERVICE-NAME", "FindingService"); $header_arr[] = new SoapHeader("X-EBAY-SOA-OPERATION-NAME", "findItemsByKeywords"); $header_arr[] = new SoapHeader("X-EBAY-SOA-SERVICE-VERSION", "1.0.0"); $header_arr[] = new SoapHeader("X-EBAY-SOA-GLOBAL-ID", "EBAY-GB"); $header_arr[] = new SoapHeader("X-EBAY-SOA-SECURITY-APPNAME", "REMOVED"); $header_arr[] = new SoapHeader("X-EBAY-SOA-REQUEST-DATA-FORMAT", "XML"); $header_arr[] = new SoapHeader("X-EBAY-SOA-MESSAGE-PROTOCOL", "XML"); $test = $client->__setSoapHeaders($header_arr); $client->__setLocation("http://svcs.ebay.com/services/search/FindingService/v1");//endpoint $FindItemsByKeywordsRequest = array( "keywords" => "potter" ); $result = $client->__soapCall("findItemsByKeywords", $FindItemsByKeywordsRequest); //print_r($client->__getFunctions()); //print_r($client->__getTypes()); //print_r($result); ? And this is the error I receive: Fatal error: Uncaught SoapFault exception: [axis2ns2:Server] Missing SOA operation name header in C:\xampplite\htdocs\OOP\newfile.php:25 Stack trace: #0 C:\xampplite\htdocs\OOP\newfile.php(25): SoapClient-__soapCall('findItemsByKeyw...', Array) #1 {main} thrown in C:\xampplite\htdocs\OOP\newfile.php on line 25 It doesnt make sense, I have already set the operation name in the header of the request... Does anyone know what is wrong here?

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