EDT:Writing statements

EGL provides general statements, as well as "action statements" that are used for interacting with an external data source.

General statements

Case

The case statement never runs more than one clause:

• The first form of the statement tests a criterion value. The following example invokes mySecondFunction if the field value is 2, 3, or 4:

case (myRecord.requestID)
   when (1)
      myFirstFunction();
   when (2, 3, 4)
      mySecondFunction();      
   otherwise
      myDefaultFunction();
end

• The second form of the statement executes the first clause that resolves to true. The following example displays only "x passes":

function test()
   x INT = 3;
   y INT = 5;
   z INT = 7;
 
   case
      when (x == 3)
         SysLib.writeStdOut("x passes");
      when (y == 5)
         SysLib.writeStdOut("y passes");
      when (z == 7)
         SysLib.writeStdOut("z passes");
      otherwise
         SysLib.writeStdErr("You will not see this message.");
      end
   end 
end