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• UDDI Best Practices

  - by Andrew Cripps

  My organisation is getting into the SOA world (a bit late, but that's what it's like here!) and we're looking into the ESB Toolkit 2.0 (we already have BizTalk Server 2009). We're keen on implementing UDDI (specifically, the UDDI Services v3.0 that ships with BTS 2009), but we're low on actual UDDI experience. We want to manage the ever-burgeoning number of web services we have across all our environments. What are the best practices for implementing UDDI? For example:- Would you implement a single highly-available resilient UDDI server that hosts all services and bindings, including test environment versions? Or would you implement separate UDDI repositories for test and production environments? I'm aware of the Oasis Technical Note v2.0 on WSDL and UDDI, but does anyone actually implement that? I.e. the abstract parts of the WSDL as tModels, the implementation parts of the WSDL as bindings? Would you go to the effort of capturing non-web service endpoints in UDDI, or just use it for WSDL? What are the "gotchas"?

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• WCF fault logging and SQL Exception 4060 error.

  - by Bill

  I have been attempting to compile/run a sample WCF application from Juval Lowy's website (author of Programming WCF Services & founder of IDesign) for several days. The example app utilizes Juval's ServiceModelEx library which logs faults/errors to a "WCFLogbook" SQL database. Unfortunately, when the sample app faults, I get the following error: SQL Exception 4060: "Cannot open database \"WCFLogbook\" requested by the login. The login failed.\r\nLogin failed for user 'Bill-PC\Bill'." I confirmed that the SQL WCFLogbook database has been created and have granted all of the appropriate permissions for my (Bill-PC\Bill) access to the database. Additionally port 8006 and port 1433 have been opened in the Firewall. TCP/IP has been enabled and "Allow remote connections to this server" has been checked. I am using the following endpoint within the App.Config file: <client> <endpoint name="LogbookTCP" address="net.tcp://Bill-PC:8006/LogbookManager" binding="netTcpBinding" contract="ILogbookManager" /> </client> Unfortunately SQL is a 'world' that I hadn't needed to venture into before now and I am terribly frustrated with my lack of success. Would anyone have any other suggestions on how to get this working? Have I missed anything?

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• Why are floating point values so prolific?

  - by Kibbee

  So, title says it all. Why are floating point values so prolific in computer programming. Due to problems like rounding errors, and not being able to even accurately represent numbers such as 0.1, I really can't see how they got as far as they did. I understand that the computation is faster with floating point numbers, however, I can think of only a few cases that they actually the right data type would be using. If you sat back and think about every time you used a floating point value, how many times did you say, well, some error would be ok, as long as the result was a few microseconds faster. It really makes me think because Jeff was talking about NP completeness, and how heuristics give an answer that is kind of right. And well, computers shouldn't do that. They should give you the answer that is correct. Yet we see floating point values used in many applications where they are completely not valid. What really bugs me, isn't that floating point exists, but that in many languages, there isn't even a viable alternative, non-floating point, decimal value. A lot of programmers when doing financial applications have to fall back to storing the number of cents in an integer field. Which brings with it all kinds of other problems. Why do floats continue to be so prolific, even though they can't represent the real answer, and we expect computers to be accurate? [EDIT] Just to clarify, I was talking about Base 2 floating points, and not base 10 floating points. .Net offers the Decimal data type, which is a base 10 floating point value which offers a much better representation of the numbers we deal with on a daily basis in most computer programs. I find it hard to believe that even modern languages like Java don't support base 10 floating point values, unless you want to move into the realm of things like BigDecimal, which isn't really the right answer either in a lot of situations.

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• Text mining on large database (data mining)

  - by yox

  Hello, I have a large database of resumes (CV), and a certain table skills grouping all users skills. inside that table there's a field skill_text that describes the skill in full text. I'm looking for an algorithm/software/method to extract significant terms/phrases from that table in order to build a new table with standarized skills.. Here are some examples skills extracted from the DB : Sectoral and competitive analysis Business Development (incl. in international settings) Specific structure and road design software - Microstation, Macao, AutoCAD (basic knowledge) Creative work (Photoshop, In-Design, Illustrator) checking and reporting back on campaign progress organising and attending events and exhibitions Development : Aptana Studio, PHP, HTML, CSS, JavaScript, SQL, AJAX Discipline: One to one marketing, E-marketing (SEO & SEA, display, emailing, affiliate program) Mix marketing, Viral Marketing, Social network marketing. The output shoud be something like : Sectoral and competitive analysis Business Development Specific structure and road design software - Macao AutoCAD Photoshop In-Design Illustrator organising events Development Aptana Studio PHP HTML CSS JavaScript SQL AJAX Mix marketing Viral Marketing Social network marketing emailing SEO One to one marketing As you see only skills remains no other representation text. I know this is possible using text mining technics but how to do it ? the database is realy large.. it's a good thing because we can calculate text frequency and decide if it's a real skill or just meaningless text... The big problem is .. how to determin that "blablabla" is a skill ? thanks

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• How to approach ninject container/kernel in inheritance situation

  - by Bas

  I have the following situation: class RuleEngine {} abstract class RuleImplementation {} class RootRule : RuleImplementation {} class Rule1 : RuleImplementation {} class Rule2 : RuleImplementation {} The RuleEngine is injected by Ninject and has a kernel at it's disposal, the role of the RuleEngine is to fire off the root rule, which on it's turn will load all the other rules also using Ninject, but using a different Module and creating a new Kernel. Now my question is, some of the rules require some dependencies which I want to inject using Ninject. What would be the best way to create the kernel for these rules and also still do proper unit testing with it? (the kernel shouldn't become a real pain in my tests) I've been thinking of the following possibilitys: The kernel that I use in the RuleEngine class could be tossed around to RuleImplementation and thus be available for every rule. But tossing around Kernels isn't really something I wish to do. When creating the rules, I could give the kernel (which creates the rules) as a constructor argument for each rule. I could create a method inside the RuleImplementation which creates a kernel and makes it possible for the rules to retrieve the kernel using a get() in the abstract class Whats the convention of passing around/creating kernels? Just create new kernels, or reuse them?

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• Wpf Mvvm ComboBox

  - by 2Fast4YouBR

  Hi All, I am new in the Wpf world, so I created a couple of views and all of them have at least one ComboBox, as I am using the MvvM pattern, I get my self re-typing all the time the same line of codes to fill the Combo and to get the SelectedItem (creating properties, privates for fill and other to get). Is there some kind of framework that can improve this part ? or hack/trick ??? as I see too much repetitive code... maybe I am doing something wrong, take a look: XAML: <ComboBox name= "cbDepartments" DisplayMemberPath="DepartmentName" SelectedValuePath ="PrimaryKey" ItemsSource="{Binding Path=Departments}" SelectedItem="{Binding Path=DefaultBranch,Mode=TwoWay}" > ViewModel: private Department defaultBranch; public Department DefaultBranch { get { return this.defaultBranch; } set { if (this.defaultBranch != value) { this.defaultBranch = value; this.OnPropertyChanged("DefaultBranch"); this.saveChangeCommand.RaiseCanExecuteChanged(); this.UserMessage = string.Empty; } } } private ObservableCollection<Department> departments; public ObservableCollection<Department> Departments { get { return this.departments; } set { if (this. departments!= value) { this. departments = value; this.OnPropertyChanged("Departments"); } } }

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• aapt not found when building new Android app in NetBeans

  - by Oz

  I just installed NetBeans and the Android SDK following the instructions here. I am running Ubuntu 9.10 (Karmic). NetBeans is 6.7.1. The Android SDK is version 7. When I try to compile a new project it gives me the following error: Execute failed: java.io.IOException: Cannot run program "/home/oz/android-sdk/platforms/android-7/tools/aapt" (in directory "/home/oz/projects/ArmyBuilder/android"): java.io.IOException: error=2, No such file or directory When I go into that directory, I see that the file does exist and it has proper permissions to be executable by anyone, yet even bash can't find it! oz@Ivory-Coast:~/android-sdk/platforms/android-7/tools$ pwd /home/oz/android-sdk/platforms/android-7/tools oz@Ivory-Coast:~/android-sdk/platforms/android-7/tools$ ls -l total 4652 -rwxrwxrwx 1 oz oz 3472784 2010-04-20 18:16 aapt -rwxrwxrwx 1 oz oz 1050336 2010-04-20 18:16 aidl -rwxrwxrwx 1 oz oz 213698 2010-04-20 18:16 dexdump -rwxrwxrwx 1 oz oz 2497 2010-04-20 18:16 dx drwxr-xr-x 2 oz oz 4096 2010-04-20 18:16 lib -rw-r--r-- 1 oz oz 10800 2010-04-20 18:16 NOTICE.txt oz@Ivory-Coast:~/android-sdk/platforms/android-7/tools$ ./aapt bash: ./aapt: No such file or directory oz@Ivory-Coast:~/android-sdk/platforms/android-7/tools$ Googling for this error turns up a few other people having this same issue (ht tp://www.mentby.com/erisa/aapt-not-found.html, ht tp://www.helloandroid.com/content/file-not-found-hello-world-application) both with no responses.

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• Is this error caused by a 64-bit library being accessed by a Java program running in a 32-bit JVM?

  - by Mike

  I'm trying to create a simple Java app that uses JNI to call some native functions. I've followed the examples in the JNI Programming Guide and can't seem to get them to work. I have the following Hello World program, written in Java: class HelloWorld { private native void print(); public static void main(String [] args) { new HelloWorld().print(); } static { System.load("/home/mike/Desktop/libHelloWorld.so"); } } I compile it using javac HelloWorld.java, just like normal. Then I run javah -jni HelloWorld, and finally the following: gcc34 -shared -fpic -o libHelloWorld.so -I/<path to JDK>/include -I/<path to JDK>/include/linux HelloWorld.c gcc34 is the name of the GCC program on my machine here at work (I don't control that) and I obviously place the real path to the JDK in that command. When I run my program, using the standard java HelloWorld, I get an error saying the following: Exception in thread "main" java.lang.UnsatisfiedLinkError: /home/mike/Desktop/libHelloWorld.so: /home/mike/Desktop/libHelloWorld.so: wrong ELF class: ELFCLASS64 (Possible causes: architecture word width mismatch) at java.lang.ClassLoader$NativeLibrary.load(Native Method) at java.lang.ClassLoader.loadLibrary0(ClassLoader.java:1778) at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1674) at java.lang.Runtime.load0(Runtime.java:770) at java.lang.System.load(System.java:1003) at HelloWorld.<clinit>(HelloWorld.java:8) Could not find the main class: HelloWorld. Program will exit. I know I'm running a 32-bit JVM (and unfortunately, as of right now, I'm not allowed to get a 64-bit JVM). I tried telling GCC to compile in 32-bit mode using the "-m32" option, but we don't have (and again, can't get) what we need for that. Does this sound like a 32/64-bit conflict or something else?

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• spring 3 AOP anotated advises

  - by Art79

  Trying to figure out how to Proxy my beans with AOP advices in annotated way. I have a simple class @Service public class RestSampleDao { @MonitorTimer public Collection<User> getUsers(){ .... return users; } } i have created custom annotation for monitoring execution time @Target({ ElementType.METHOD, ElementType.TYPE }) @Retention(RetentionPolicy.RUNTIME) public @interface MonitorTimer { } and advise to do some fake monitoring public class MonitorTimerAdvice implements MethodInterceptor { public Object invoke(MethodInvocation invocation) throws Throwable{ try { long start = System.currentTimeMillis(); Object retVal = invocation.proceed(); long end = System.currentTimeMillis(); long differenceMs = end - start; System.out.println("\ncall took " + differenceMs + " ms "); return retVal; } catch(Throwable t){ System.out.println("\nerror occured"); throw t; } } } now i can use it if i manually proxy the instance of dao like this AnnotationMatchingPointcut pc = new AnnotationMatchingPointcut(null, MonitorTimer.class); Advisor advisor = new DefaultPointcutAdvisor(pc, new MonitorTimerAdvice()); ProxyFactory pf = new ProxyFactory(); pf.setTarget( sampleDao ); pf.addAdvisor(advisor); RestSampleDao proxy = (RestSampleDao) pf.getProxy(); mv.addObject( proxy.getUsers() ); but how do i set it up in Spring so that my custom annotated methods would get proxied by this interceptor automatically? i would like to inject proxied samepleDao instead of real one. Can that be done without xml configurations? i think should be possible to just annotate methods i want to intercept and spring DI would proxy what is necessary. or do i have to use aspectj for that? would prefere simplest solution :- ) thanks a lot for help!

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• docs/examples on libxml2 type system?

  - by Wang

  I'm reading through the libxml2 API and examples on xmlsoft.com and having some real difficulty wrapping my head around the type system. For example, the _xmlAttribute struct has an xmlChar* field called name. This obviously refers to the name of the attribute (e.g., "bar" for the struct tied to the element <foo bar='baz' />). The _xmlAttribute struct also has a field called value, which I would expect to be "baz", except the type is xmlNodePtr. Um, what? I guess I could write up some test code and examine the memory in gdb, but there has to be an easier way. Has anyone written up examples of the data structures generated by a libxml2 parser? I'm looking for an English prose text, not generated documentation, that will walk me through the various types and the values they take when parsing some example bit of XML. Bonus points if it presents only the subset of libxml2 needed to read and write a config file---no namespaces or XPath or even modifying an existing document, just parse some XML, access the data, and then write it out again.

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• Suggestions for entering mobile development -- pure iPhone SDK, Android SDK, Mono Touch or Titanium

  - by Tom Cabanski

  I am entering mobile development. I have been working primarily in .NET since 1.0 came out in beta. Before that, I was mostly a C++ and Delphi guy and still dabble in C++ from time to time. I do web apps quite a bit so I am reasonably proficient with Javascript, JQuery and CSS. I have also done a few Java applications. I started web programming with CGI and live mostly in the ASP.NET MVC world these days. I am trying to decide on which platform/OS and tool to select. I am concerned with the size of the market available for my applications as well as the marketibility of the skills I will pick up. The apps I have in mind would work on both phones and pads. Some aspects of what I have in mind will play better on the bigger screens that will be available on pads. Here are the options I am considering: Apple iPhone/iPad using pure Apple SDK (Objective-C) Apple iPhone/iPad using Mono Touch (C#) Android using pure Android SDK (Java) Multiple platforms using something like Titanium to generate native apps from web technologies (HTML, CSS and Javascript) Multiple platforms using HTML5 web applications that run in the browser (HTML, CSS and Javascript). Which option would you choose? Do you have a different suggestion? What are the pros and cons?

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• Db4o Mvc Application Architecture

  - by Mac

  I am currently testing out Db4o for an asp.net MVC 2 application idea but there are a few things I'm not quite sure on the best way to proceed. I want my application to use guessable routes rather than Id's for referencing my entities but I also think I need Id's of some sort for update scenarios. so for example I want /country/usa instead of /country/1 I may want to change the key name though (not perhaps on a country but on other entities) so am thinking I need an Id to use as the reference to retrieve the object prior to updating it's fields. From other comments it seems like the UUID is a bit long to be using and would prefer to use my own id's anyway for clean separation of concerns. Looking at both the KandaAlpha project I wasn't too keen on some aspects of the design and prefer something more along the lines of S#arp architecture where they use things like the [domainsignature] and EntityWithTypedId, IEntityDuplicateChecker, IHasAssignedId, BaseObject and IValidatable in their entities to control insert/update behaviour which seems cleaner and more extensible, covers validation and is encapsulated well within the core and base repository classes. So would a port of S#arp architecture to Db4o make sense of am I still thinking rmdbs in an oodb world? Also is there a best practice for managing indexes (including Unique ones as above) in Db4o? Should they be model metadata based and loaded using DI in a bootstrapper for example or should they be more loaded more like Automapper.CreateMap? Its a bit of a rambling question I know but any thoughts, ideas or suggested reading material is greatly appreciated. Thanks Mac

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• Coupling between controller and view

  - by cheez

  The litmus test for me for a good MVC implementation is how easy it is to swap out the view. I've always done this really badly due to being lazy but now I want to do it right. This is in C++ but it should apply equally to non-desktop applications, if I am to believe the hype. Here is one example: the application controller has to check some URL for existence in the background. It may connect to the "URL available" event (using Boost Signals) as follows: BackgroundUrlCheckerThread(Controller & controller) { // ... signalUrlAvailable.connect( boost::bind(&Controller::urlAvailable,&controller,_1)) } So what does Controller::urlAvailable look like? Here is one possibility: void Controller::urlAvailable(Url url) { if(!view->askUser("URL available, wanna download it?")) return; else // Download the url in a new thread, repeat } This, to me, seems like a gross coupling of the view and the controller. Such a coupling makes it impossible to implement the view when using the web (coroutines aside.) Another possibility: void Controller::urlAvailable(Url url) { urlAvailableSignal(url); // Now, any view interested can do what it wants } I'm partial to the latter but it appears that if I do this there will be: 40 billion such signals. The application controller can get huge for a non-trivial application A very real possibility that a given view accidentally ignores some signals (APIs can inform you at link-time, but signals/slots are run-time) Thanks in advance.

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• JQuery - Slide Example

  - by gav

  Hi All, I want to perform a simple slide motion on an HTML element. JQuery is already available on the site in question so the next logical step for me was to look at their documentation. JQuery - Slide down When I check out their demo however, it doesn't seem to be functioning. In firebug they have an error; missing ) after argument list wyciwyg://0/http://docs.jquery.com/UI/Effects/Slide Line 18 Whilst the error seems simple, I can't work out how to correct it (On thier site by editing the JS). On my own site using the same example an error is found in the JQuery 1.4.2 script itself; jQuery.easing[specialEasing || defaultEasing] is not a function file:///home/gav/ee-workspaces/web/site/php/jquery-1.4.2.js Line 5854 I don't mean to sound lazy / rude but what's going on? Is the JQuery site and newest release actually broken, I doubt it, what am I doing wrong? I'm a CS grad with no real web dev experience so I'm not used to this method of debugging, where should I start with this? Thanks, Gav

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• Beanshell in Ant yielding, "Unable to create javax script engine for beanshell"

  - by John B.

  Greeting, I'm trying to put some Beanshell script in my Ant build.xml file. I've followed the Ant manual as well as I can but I keep getting "Unable to create javax script engine for beanshell" when I run Ant. Here is the test target I wrote mostly from examples in the Ant manual: <target name="test-target"> <script language="beanshell" setbeans="true"> <classpath> <fileset dir="c:\TEMP" includes="*.jar" /> </classpath> System.out.println("Hello world"); </script> </target> My beanshell "bsh-2.0b4.jar" file is on the script task's classpath the way the manual recommended. Hope I have the right file. I'm working in c:\TEMP right now. I've been googling and trying for a while now. Any ideas would be greatly appreciated. Thanks.

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• emacs indentation problem

  - by Gauthier

  I'm really trying to switch to emacs, but learning to setup the environment is a real pain. Everybody says it's worth it, so I just continue. I want my c code to be implemented that way: if(asdf) { asdr = 1; } Depending on the current standard (I know, don't get me started), could be: if(asdf) { asdr = 1; } I can't seem to change the indentation size from 2, it always looks like the GNU standard: if(asdf) { asdr = 1; } , which I dislike. Here is what I have put in my .emacs: ; Warn in C for while();, if(x=0), ... (global-cwarn-mode 1) ; no electric mode in c (c-toggle-electric-state -1) ; indent the current line only if the cursor is at the beginning of the line (setq-default c-tab-always-indent nil) (setq-default c-indent-level 4) (setq-default tab-width 4) (setq-default indent-tabs-mode nil) (setq-default c-basic-offset 4) (setq-default c-basic-indent 4) ; These commands I read about on the web, but they don't work? ;(highlight-tabs) ;(highlight-trailing_whitespace) This did not help, I have still the GNU indent. Anyone?

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• Change ObjectChoiceField Color not working on Blackberry OS 5.0

  - by Ari R. Fikri

  I want to create a custom ObjectChoiceField, the expected behavior is if the data change then upon leavinge the focus the font color will change. I have succeded in BB OS upto 4.7 but when tested on simulator and on real device with BB OS 5.0 the color won't change. This is my class : public class MyObjectChoiceField extends ObjectChoiceField { int color; Object oldValue, newValue; boolean isChanged; public MyObjectChoiceField(){ super(); oldValue = new Object(); newValue = new Object(); } public MyObjectChoiceField(int color, String label, String[] choices, int intP, long styleP){ super(label, choices, intP, styleP); this.color = color; } public void onUnfocus(){ if (getSelectedIndex() != -1){ newValue = getChoice(getSelectedIndex()); if (oldValue != newValue){ isChanged = true; invalidate(); } } super.onUnfocus(); } public void onFocus(int directionInt){ if (getSelectedIndex() != -1) oldValue = getChoice(getSelectedIndex()); super.onFocus(directionInt); } public void paint(Graphics g){ if (isChanged){ g.setColor(this.color); } super.paint(g); } What should I do to make this also work on BB OS 5.0. FYI : The ObjectChoiceField in BB 5.0 is look like a button with a triangle point down in the right side, which is different with BB OS 4.7.

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• gnuplot: display only the roots.

  Hi, Gnuplot, a great package ... I'm in love with it. But we can have our tiffs as well, as any couple :-) This time, I wanted to simply plot the roots of an equation: say a quadratic to keep things simple. However, I only want two nice round dots appearing on the x-axis representing the point where the quadratic crosses the x-axis or y=0 axis. In other words the roots (when they are real that is). I don't want to do this with datafile ... I want gnuplot to calculate the roots and plot them. First off, my attempts: single points aren't really what gnuplot would have you plot, it likes a good wide range of values. Preferably filling up the whole width of your canvas. It's possible to locate a rectangle at a certain coordinate on your plot, but I wanted a round point. Currently I'm chasing up how to do a tiny filled polygon at that point. I have tried the "samples" option bu it doesn't seem useful. Also though about defining a dirac-delta function so that only one point would be highlighted (though two would be needed). ANy suggestions welcome, thanks.

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• Error in WCF service - Silverlight client communication.

  - by David

  I created a WCF service and I planned to consume this in a Silverlight application. So I created the WCF service in the Website host project. The service is a simple WCF service that only returns a number - something like a Hello World WCF-SL. So after adding a service reference in the silverlight client project to the Service URI, after calling async the service method (by using the generated proxy), I get the following exception in the callback method: An error occurred while trying to make a request to URI 'http://localhost:4566/SLService.svc'. This could be due to attempting to access a service in a cross-domain way without a proper cross-domain policy in place, or a policy that is unsuitable for SOAP services. You may need to contact the owner of the service to publish a cross-domain policy file and to ensure it allows SOAP-related HTTP headers to be sent. This error may also be caused by using internal types in the web service proxy without using the InternalsVisibleToAttribute attribute. Please see the inner exception for more details. I only created a HelloWorld WCF service with nothing else but a simple method that returns a dumb number and it's hosted on my locally. Must I have clientaccesspolicy.xml or crossdomain.xml? I acces my service locally. Every time I create a new simple/dumb WCF-SL solution, I get this error. I use VS2010 and Silverlight 4. I cannot get a simple/dumb WCF-SL solution working locally. Is there something wrong with the configuration? On another machine in the same network, it does work properly, so I assume something is misconfigured. Any thoughts?

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• String.Empty in strings, need some explanation if possible :)

  - by Pabuc

  Hello all, 2 days ago, there was a question related to string.LastIndexOf(String.Empty) returning the last index of string. So I thought that; a string can always contain string.empty between characters like: "testing" == "t" + String.Empty + "e" + String.Empty +"sting" + String.Empty; After this, I wanted to test if String.IndexOf(String.Empty) was returning 0 because since String.Empty can be between any char in a string, that would be what I expect it to return and I wasn't wrong. string testString = "testing"; int index = testString.LastIndexOf(string.Empty); // index is 6 index = testString.IndexOf(string.Empty); // index is 0 It actually returned 0. I started to think that if I could split a string with String.Empty, I would get at least 2 string and those would be String.Empty and rest of the string since String.IndexOf(String.Empty) returned 0 and String.LastIndexOf(String.Empty) returned length of the string.. Here is what I coded: string emptyString = string.Empty; char[] emptyStringCharArr = emptyString.ToCharArray(); string myDummyString = "abcdefg"; string[] result = myDummyString.Split(emptyStringCharArr); The problem here is, I can't obviously convert String.Empty to char[] and result in an empty string[]. I would really love to see the result of this operation and the reason behind this. So my questions are: Is there any way to split a string with String.Empty? If it is not possible but in an absolute world which it would be possible, would it return an array full of chars like [0] = "t" [1] = "e" [2] = "s" and so on or would it just return the complete string? Which would make more sense and why? Thank you for your time.

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• Java how can I add an accented "e" to a string?

  - by behrk2

  Hello, With the help of tucuxi from the existing post Java remove HTML from String without regular expressions I have built a method that will parse out any basic HTML tags from a string. Sometimes, however, the original string contains html hexadecimal characters like é (which is an accented e). I have started to add functionality which will translate these escaped characters into real characters. You're probably asking: Why not use regular expressions? Or a third party library? Unfortunately I cannot, as I am developing on a BlackBerry platform which does not support regular expressions and I have never been able to successfully add a third party library to my project. So, I have gotten to the point where any é is replaced with "e". My question now is, how do I add an actual 'accented e' to a string? Here is my code: public static String removeHTML(String synopsis) { char[] cs = synopsis.toCharArray(); String sb = new String(); boolean tag = false; for (int i = 0; i < cs.length; i++) { switch (cs[i]) { case '<': if (!tag) { tag = true; break; } case '>': if (tag) { tag = false; break; } case '&': char[] copyTo = new char[7]; System.arraycopy(cs, i, copyTo, 0, 7); String result = new String(copyTo); if (result.equals("&#x00E9")) { sb += "e"; } i += 7; break; default: if (!tag) sb += cs[i]; } } return sb.toString(); } Thanks!

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• Boost Solr results based on the field that contained the hit

  - by TomFor

  Hi, I was browsing the web looking for a indexing and search framework and stumbled upon Solr. A functionality that we abolutely need is to boost results based on what field contained the hit. A small example: Consider a record like this: <movie> <title>The Dark Knight</title> <alternative_title>Batman Begins 2</alternative_title> <year>2008</year> <director>Christopher Nolan</director> <plot>Batman, Gordon and Harvey Dent are forced to deal with the chaos unleashed by an anarchist mastermind known only as the Joker, as it drives each of them to their limits.</plot> </movie> I want to combine for example the title, alternative_title and plot fields into one search field, which isn't too difficult after looking at the Solr/Lucene documentation and tutorials. However I also want that movies that have a hit in title have a higher score than hits on alternative_title and those in their turn should score higher than hits in the plot field. Is there any way to indicate this kond of scoring in the xml or do we need to develop some custom scoring algorythm? Please also note that the example I've givnen is fictional end the real data will probably contain 100+ fields. Thanks in advance, Tom

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• Open mails in outlook from java using the protocol "mapi://"

  - by Goulutor

  I developp a Java application using Windows Desktop Search from which I can retrieve some information about files on my computer such as urls (System.ItemUrl). An example of such url is file://c:/users/ausername/documents/aninterestingfile.txt for "normal" files. This field give also urls of mail items indexed from Outlook or Thunderbird. Thunderbird's items (only available using vista and seven) are also files (.wdseml). But outlook's items urls start with "mapi://" like : mapi://{S-1-5-21-1626573300-1364474481-487586288-1001}/[email protected]($b423dcd5)/0/Inbox/???????????????????????? The problem I have is opening the real item from Java in Outlook using this url. If I copy/paste it in the run dialog of Windows, it works ; it also works if I use "start" followed by the copied/pasted url in command line. The url seems to be encoded in UTF-16. I want to be able to write such code : String url = "mapi://{S-1-5-21-1626573300-1364474481-487586288-1001}/[email protected]($b423dcd5)/0/Inbox/????????????????????????"; Runtime.getRuntime().exec("cmd.exe /C start " + url); I doesn't work and I've tried other solutions like : String start = "start"; String url = "mapi://{S-1-5-21-1626573300-1364474481-487586288-1001}/[email protected]($b423dcd5)/0/Inbox/????????????????????????"; FileOutputStream fos = new FileOutputStream(new File("test.bat"); fos.write(start.getBytes("UTF16"); fos.write(url.getBytes("UTF16")); fos.close(); Runtime.getRuntime().exec("cmd.exe /C test.bat"); without any success. Using the solution above, the file "test.bat" contains the correct url and the "start" command, but the run of "test.bat" results in the well known error message : '¦' is not recognized as an internal or external command, operable program or batch file. Has anybody an idea to be able to open "mapi://" items from Java ?

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• How to pass a reference to a JS function as an argument to an ExternalInterface call?

  - by Ryan Wilson

  Summary I want to be able to call a JavaScript function from a Flex app using ExternalInterface and pass a reference to a different JavaScript function as an argument. Base Example Given the following JavaScript: function foo(callback) { // ... do some stuff callback(); } function bar() { // do some stuff that should happen after a call to foo } I want to call foo from my flex app using ExternalInterface and pass a reference to bar as the callback. Why Really,foo is not my function (but, rather, FB.Connect.showBookmarkDialog), which due to restrictions on Facebook iframe apps can only be called on a button click. My button, for design reasons, is in the Flex app. Fortunately, it's possible to call ExternalInterface.call("FB.Connect.showBookmarkDialog", callback) to display the bookmark dialog. But, FB.Connect.showBookmarkDialog requires a JS callback so, should I want to receive a callback (which I do), I need to pass a reference to a JS function as the single argument. Real Example MXML: <mx:Button click="showBookmarkDialog();" /> ActionScript: function showBookmarkDialog() : void { ExternalInterface.registerCallback( "onBookmarkDialogClosed", onBookmarkDialogClosed ); ExternalInterface.call( "FB.Connect.showBookmarkDialog", /* ref to JS function onBookmarkDialogClosed ? */ ); } function onBookmarkDialogClosed(success:Boolean) : void { // sweet, we made it back } JavaScript: function onBookmarkDialogClosed() { var success; // determine value of success getSWF().onBookmarkDialogClosed(success); } Failed Experiments I have tried... ExternalInterface.call( "FB.Connect.showBookmarkDialog", "onBookmarkDialogClosed" ); ExternalInterface.call( "FB.Connect.showBookmarkDialog", onBookmarkDialogClosed ); ExternalInterface.call( "FB.Connect.showBookmarkDialog", function() : void { ExternalInterface.call("onBookmarkDialogClosed"); } ); ExternalInterface.call( "FB.Connect.showBookmarkDialog", function() { this["onBookmarkDialogClosed"](); } ); Of note: Passing a string as the argument to an ExternalInterface call results in FB's JS basically trying to do `"onBookmarkDialogClosed"()` which, needless to say, will not work. Passing a function as the argument results in a function object on the other side (confirmable with `typeof`), but it seems to be an empty function; namely, `function Function() {}`

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• How to secure Add child record functionality in MVC on Parent's view?

  - by RSolberg

  I'm trying to avoid some potential security issues as I expose some a new set of functionality into the real world. This is basically functionality that will allow for a new comment to be added via a partialview on the "Parent" page. My comment needs to know a couple of things, first what record is the comment for and secondly who is making the comment. I really don't like using a hidden field to store the ID for the Parent record in the add comment form as that can be easily changed with some DOM mods. How should I handle this? PARENT <% Html.RenderPartial("AddComment", Model.Comments); %> CHILD <%@ Control Language="C#" Inherits="System.Web.Mvc.ViewUserControl<CommentsViewModel>" %> <% using (Html.BeginForm("AddComment", "Requests")) {%> <fieldset> <legend>New Comment</legend> <%= Html.HiddenFor(p => p.RequestID) %> <%= Html.TextBoxFor(p => p.Text) %> &nbsp; <input type="submit" value="Add" /> </fieldset> <% } %> CONTROLLER [AcceptVerbs(HttpVerbs.Post)] public void AddComment(CommentsViewModel commentsModel) { var user = GetCurrentUser(); commentsModel.CreatedByID = user.UserID; RequestsService.AddComment(commentsModel); }

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