The design and implementation of a poll-type error-handling mechanism

Error | Error handling | Design and implementation of a poll-type error handling mechanism (i.)


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Summary

This paper briefly introduces the design idea and implementation of a polling error handling mechanism, which can flexibly realize the extension of error handling mode and the customization of error information format.


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Directory

Brief introduction
Class diagram
Description of class and code implementation
How the client is invoked
Summarize
For more information

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Brief introduction

Error handling is a fixed module that every application needs to contain. How to design an error-handling mechanism with universal applicability is the core of this paper. This article describes a polling approach that allows users to selectively use defined or user-defined methods for error handling, while allowing users to customize and extend the error message output format.


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Class diagram














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Description of class and code implementation

Global:



This class is used to enlist error handling and to define its flag value, and there is a global static method numbersplit that converts incoming parameter int x into a string output in binary format. The specific code is as follows:



public class Global

{

Error handling method Count

public const int Error_handle_mode = 5;

Flag values for each type of error handling

public const int None = 0;

public const int debuginfo = 1;

public const int EVENTLOG = 2;

public const int MESSAGEBOX = 4;

public const int LogFile = 8;

public const int Mail = 16;

public const int shortmessage = 32;

public const int Print = 64;

public const int MessageQueue = 128;

public const int Database = 256;

public const int Console = 512;



Public Global ()

{

//

Todo:add constructor Logic here

//

}



public static string Numbersplit (int x)

{

string r = "";

while (x!=0)

{

int t = x%2;

R = t.tostring () + R;

x = X/2;

}

return R;

}

}







Errormsgclass:



The class is an error message containing a class, and any Error object is present as an instance of the class, and an instance of the class is also used as the carrier of the error message throughout the error handling system. The class has only one parameter of the hash type, which holds the specific error message. When this class is instantiated, the error handling is automatically set to 0 (not processed). The specific code is as follows:



public class Errormsgclass

{

Public Hashtable hash= New Hashtable ();



Public Errormsgclass ()

{

//

Error handling defaults to not handling

Hash. ADD ("Mode", 0);

//

}



}