Question

I have in my database a coloumn say agent which can have enum values (‘G’,’Y’,’M’) where G= google Y= yahoo M= msn

how should i map the output coming from my function i.e google as G in my code so that database recognise it and saves it??

Answer 1

I think the easiest way is to get the int representation of the enum value. Enums are numbers in the background, so it’s usually easy to cast an enum member to a number and vice versa.

You can write a converter class for the best flexibility. You can process the enum value and generate a string, or get a string and return an enum member. You can do this in a simple if-then-else or switch-case structure.

If you are using .NET (C#), be aware that you can pass any number as a parameter even you specify an enum, so an else or a default branch is a must in case of conversion.

If you are using PHP, here is an example:

 $myEnum = array ('red' => 1,'blue' => 2,'yellow' => 3);   $d = $myEnum['red']; 

You will get 1 for red, 3 for yellow. If you want to use a string:

$myEnum = array ('Google' => 'G','Yahoo' => 'Y','MSN' => 'M');  $d = $myEnum['Google'];