Returns the data type information of an object as a string.

String.typeName

Returns

System.String

Example:

vStringValue:String='SomeString'

vStringValue.OclType.typeName

Returns

System.String

OclType.asString returns the same value as typeName.

Asking a variable X:

let X = 2

“What kind of thing are you?”“Are you a String? Are you an Integer? Are you a Boolean?”

typeName answers that question.

The typeName operator in OCL is helpful for several reasons:

• It helps verify that a value has the expected type.
• It's useful in debugging, as you can check the type of values during development.
• It's valuable when writing generic functions or expressions that need to work on many kinds of data.
• It helps confirm model behavior during validation by ensuring types are used correctly.
• It ensures expressions behave as expected, especially when values may be null or dynamically computed, by allowing you to inspect their types at runtime.

See also:

• OCLOperators OclType