Salesforce Apex: Switch Statements

Were you aware that Salesforce introduced Switch Statement in Summer 18’ release? The Switch statements will enable developers to write APEX code without having to write nested if-else blocks, eventually resulting in a more readable, maintainable code. It supports the following:

• Long
• Integer
• String
• Enum
• SObject

The SObject type can be directly validated against a Salesforce object record or field value. How cool is that! The following examples are what we can do with SObject type.

Example 1 – SObject Type

Account sobj = [select id, name from account limit 1];

switch on sobj {
    when Account acc {
        system.debug(acc);
    }
    when Contact acc {
        system.debug(acc);
    }
    when else {
        system.debug('not supported');
    }
}

Example 2 – Object Field

Account acc = [select id, name, rating from account limit 1];

switch on acc.Rating{
    when 'Hot' {
        system.debug('Rating is hot.');
    }
    when 'Warm' {
        system.debug('Rating is warm.');
    }
    when else {
        system.debug('Rating is unknown');
    }
}

References:

Salesforce Documentation on Switch statements

Release notes for Switch statements