Exercise 2: Add Storage Subroutine

1. Start Studio, and open the myBASdatent routine. The finished routine is also available in the SAMPLES namespace as BASdatent2.BAS.

2. Add an If statement to the validPhone function, that checks to see if the phone exists in the index already.

   
   public function validPhone(phone As %String) As %String
   'validate a phone - just checks for 3 pieces using "-" and length
   'returns 0 for an invalid phone and writes error message
   'else returns unchanged phone with default area code added
       if (len(phone) = 8 and len(phone, "-") = 2) then
           phone = "617-" & phone ' add default area code
       end if
       
       if (len(phone) = 12 and len(phone, "-") = 3) then
           if exists( ^PersonI( "Phone", phone)) then
               print "Phone number in use" : println
               return 0
           else
               return phone
           end if        
       else
           print "###-###-#### or ###-####" : println
           return 0
       end if
   end function
   

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3. Add the following new store subroutine.

   
   public sub store()
   ' store the data
       dim yn, id, rec, ln, fn
   
       input "Store? (y/n): ", yn ' see if user wants to store
       ' only go on if user says yes
       if ( yn <> "y" ) then
           println "...not stored."
           exit sub
       end if
    
       id = increment(^PersonD) ' generate a new id
       rec = name & "^" & phone & "^" & intdob ' concatenate data into a record
       ^PersonD( id ) = rec ' store the record
   
       ' break name for storage in index
       ln = piece(name, ",", 1) : fn = piece(name, ",", 2)
    
       ' the next three statements store data in subscripts
       ' because of the automatic sorting of subscripts,
       ' this has the effect of building 3 indices: name, phone, and DOB
       ^PersonI( "Name", ln, fn, id) = "" ' store the name
       ^PersonI( "Phone", phone) = id     ' store the UNIQUE phone
       ^PersonI( "DOB", intdob, id) = ""  ' store the DOB
       println "...stored"                ' done
   
   end sub
   

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4. Store some people, and look at the globals with the Management Portal.