Using regex as an IF statement
In this recipe, we will write a simple program that will function as an if statement. A simple find regex statement will be used.
Getting ready
We will first write an if statement that will check if the value of a parameter variable field1 has the value equal to ABC, DEF, or CDE. In case the value is equal to any of the three, the message Field Value is Valid is displayed. We will then see the equivalent regex.
How to do it...
For replacing the if statement with find regex statement, proceed as follows:
- Instead of the
ifstatement, we will write afind regexstatement along with theregex '[ABC|CDE|DEF]'. - After the statement, the
sy-subrcis checked, and the appropriate messages are written.
How it works...
We have used an OR (|) operator within the find statement. A match is found if the value of the three-character field1 is equal to any of the three values specified. In this case, sy-subrc is equal to zero, and the success message is then displayed.
There's more...
Suppose we need to ignore the case. Say the input is to be compared such that there is no difference between ABC, abc, and ABc. In such a case, we may simply add ignoring case to the statement, as shown in the following screenshot:
