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  • Decorator Design Pattern - Not Possible

    - by Lennie
    Hi, This is more a design question... You can't do a decorate design pattern if: 1) The object is marked "sealed" meaning you can't extend from it. 2) or you want to override a method but its not virtual. What can you do then? Taken that you can't change the class source code if you don't have the source code (like a 3rd party library).

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  • ASP.NET - extracting from databases and pagination

    - by whitstone86
    I've got basic page templates working in ASP.NET from master pages and can include pages in ASP.NET - however, I'm having difficulty extracting from pages and paginating them. This is the design structure (i.e. the model for my site) I'm trying to base it on: http://library.digiguide.com/lib/programmenextshowing/Medium-319648 I have an SQL Driver installed, my ODBC Advisor says it is MySQL ODBC Driver 5.1. How should I get this project to work, now I have the basics under way?

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  • Is there any documentation for the Cassandra Erlang interface?

    - by Zubair
    I have looked everywhere, and to use Cassandra from Erlang you end up having to download (amongst others): boost thrift : and then you have generate the erlang library by hand, and then copy lib files and beams files. Once you have the whole thing working there is absolutely zero documentation anywhere. If anyone could show me some user friendly documentation it would be much appreciated.

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  • How do I 'globally' catch exceptions thrown in object instances.

    - by SleepyBobos
    I am currently writing a winforms application (C#). I am making use of the Enterprise Library Exception Handling Block, following a fairly standard approach from what I can see. IE : In the Main method of Program.cs I have wired up event handler to Application.ThreadException event etc. This approach works well and handles the applications exceptional circumstances. In one of my business objects I throw various exceptions in the Set accessor of one of the objects properties set { if (value > MaximumTrim) throw new CustomExceptions.InvalidTrimValue("The value of the minimum trim..."); if (!availableSubMasterWidthSatisfiesAllPatterns(value)) throw new CustomExceptions.InvalidTrimValue("Another message..."); _minimumTrim = value; } My logic for this approach (without turning this into a 'when to throw exceptions' discussion) is simply that the business objects are responsible for checking business rule constraints and throwing an exception that can bubble up and be caught as required. It should be noted that in the UI of my application I do explictly check the values that the public property is being set to (and take action there displaying friendly dialog etc) but with throwing the exception I am also covering the situation where my business object may not be used by a UI eg : the Property is being set by another business object for example. Anyway I think you all get the idea. My issue is that these exceptions are not being caught by the handler wired up to Application.ThreadException and I don't understand why. From other reading I have done the Application.ThreadException event and it handler "... catches any exception that occurs on the main GUI thread". Are the exceptions being raised in my business object not in this thread? I have not created any new threads. I can get the approach to work if I update the code as follows, explicity calling the event handler that is wired to Application.ThreadException. This is the approach outlined in Enterprise Library samples. However this approach requires me to wrap any exceptions thrown in a try catch, something I was trying to avoid by using a 'global' handler to start with. try { if (value > MaximumTrim) throw new CustomExceptions.InvalidTrimValue("The value of the minimum..."); if (!availableSubMasterWidthSatisfiesAllPatterns(value)) throw new CustomExceptions.InvalidTrimValue("Another message"); _minimumTrim = value; } catch (Exception ex) { Program.ThreadExceptionHandler.ProcessUnhandledException(ex); } I have also investigated using wiring a handler up to AppDomain.UnhandledException event but this does not catch the exceptions either. I would be good if someone could explain to me why my exceptions are not being caught by my global exception handler in the first code sample. Is there another approach I am missing or am I stuck with wrapping code in try catch, shown above, as required?

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  • Any way to make DataContractJsonSerializer serialize Dictionaries properly?

    - by morpheus
    The DataContractJsonSerializer is not able to serialize Dictionaries properly. Whereas JavaScriptSerializer serializes Dictionaries as {"abc":"xyz","def":42} for example, the DataContractJsonSerializer gives [{"Key":"abc","Value":"xyz"},{"Key":"def","Value":42}] instead. This is really problematic and I want to know how can I serialize Dictionary objects correctly in my WCF service. I am looking for a solution that would require least amount of effort. ref: http://msdn.microsoft.com/en-us/library/bb412170.aspx

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  • Mail Composer Address Problem

    - by Arun Sharma
    I found email composer sample code from iphone OS Ref Library. Here is a code- Code: NSArray *toRecipients = [NSArray arrayWithObject:@"[email protected]"]; NSArray *ccRecipients = [NSArray arrayWithObjects:@"[email protected]", @"[email protected]", nil]; NSArray *bccRecipients = [NSArray arrayWithObject:@"[email protected]"]; My question is how to take user's input? Here all email address are predefined in code. so what are the IDs of to, CC, Bcc, subject and body fields?

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  • How to compress/decompress a long query string in PHP?

    - by jodeci
    I doubt if this is encryption but I can't find a better phrase. I need to pass a long query string like this: http://test.com/test.php?key=[some_very_loooooooooooooooooooooooong_query_string] The query string contains NO sensitive information so I'm not really concerned about security in this case. It's just...well, too long and ugly. Is there a library function that can let me encode/encrypt/compress the query string into something similar to the result of a md5() (similar as in, always a 32 character string), but decode/decrypt/decompress-able?

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  • Profiling tool for Clojure?

    - by j-g-faustus
    Hi, does anyone know of a good profiling tool or library for Clojure? I would prefer something that could be used from the REPL, along the lines of (with-profiling ...) in Allegro Common Lisp back in the day. Is there anything along those lines? Or do you have any experience with (non-commercial) Java profilers that work well with Clojure?

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  • Unable to start Tomcat 6.x when Mac OS X 10.6 is boot up

    - by SkyEagle888
    I am using Mac OS X 10.6 and installed MAMP and Tomcat. My Tomcat is installed in /Users/(userID)/Tomcat I can start Tomcat server in Terminal without a problem But it cannot be started automatically when Mac OS X is boot up. I put a file org.apache.tomcat.plist in /Library/LaunchDaemons Disabled Label org.apache.tomcat ProgramArguments /Users/henryfok/Tomcat/bin/startup.sh RunAtLoad Any hint ?

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  • How Can open root in iphone?

    - by Fatemeh
    Hi , I want to knowing how can i open root directory ? I know Messages saved in sms.db that is in "/var/root/Library/SMS/sms.db" , but I can not see sub folder of root, I know ,the root have password and should enter it to open ,... but how can open this without Unlock or entering password?

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  • project plan scheduling...

    - by Muhammad Adnan
    I am looking for some algorithm/library to get functionality like microsoft project caters for scheduling tasks dates as if we change any task date then its parent, predecessors and successors dates get effected. is there any help i can get... in any way.. Thanks,

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  • LDAP c++ API choice

    - by ypnos
    I would like to write my own LDAP client under Linux, specific to our local environment. Most probably I will use QT4 to provide a shiny frontend without much hassle. I found that there seems to be no standard C++ library for this. OpenLDAP provides a C API and there should also be a C++ API (experimental?) somewhere.. Do I need to use the C stuff or is there a C++ API out there worth of recommendation?

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