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dbComponent Class Reference

#include <query.h>

List of all members.

Public Methods

 dbComponent (char const *s, char const *f=NULL)

Public Attributes

char const * structure
char const * field


Detailed Description

This class represents component of the structure. It is mostly needed for implementation of application specific database types. For example, look at dbDate class. It contains int4 jday component which stores time in seconds sinse 1970. This class defines its own comparison methods:
     dbQueryExpression operator==(char const *field) { 
	   dbQueryExpression expr;
	   expr = dbComponent(field,"jday"),"=",jday;
    	   return expr;
     }
 
Making it possible to sepcify queries like this (assume that record has column "released" with type dbDate:
     dbQuery q;
     dbDate  date;
     q = date == "released";
 


The documentation for this class was generated from the following file:
Generated on Fri Nov 15 21:06:29 2002 for FastDB by doxygen1.2.15