API Flag Setting, is there no better way?

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API Flag Setting, is there no better way?

 
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  #1
Sep 18th, 2009
I am writing a database API in C++ and I cant seem to think of a good way to handle the errors. For example if certain error conditions are met I would like to set some sort of error flag and allow every class to check that flag. I have the following classes

Database
Table (included in Database)
Column (included in Table)

I want to set some sort of flag in Column if an error is found and then check it on the next function call to a function of table or database. I was thinking I would create an error class as follows:
C++ Syntax (Toggle Plain Text) 
  1. class Error
  2. {
  3. 	bool error;
  4. 	string message;
  5.  
  6. 	Error() {
  7. 		error = false;
  8. 		message = " ";
  9. 	}
  10.  
  11. 	bool isError() { return error;
  12. 	string getMessage() { return message; }
  13. }
An Error object would be initialized in the Database class(top level class) but to set it I would have to have return types that could somehow pass up to Database every time. Is there a way to make a flag that every class can see and access? That or is there a better way to do this that I am missing? I really don't like to waste the overhead of passing info up and down the chain.

Thanks!!
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Re: API Flag Setting, is there no better way?

 
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  #2
Sep 18th, 2009
Use the error handling that already built in, called stdexcept 
1) Prove that the area of a circle is pi*r^2, where "r" is the radius of the circle.
2) Problem 2[b]solved by : jonsca
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Re: API Flag Setting, is there no better way?

 
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  #3
Sep 19th, 2009
Thanks for information, actually I was looking for this, if you want know more information about c++ static analysis keep visit this forum.
Code Review | Source code analysis | static code analysis
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