Is there a standard notation for translating a class into another?

Question

I'm working on an enterprise integration platform which has to translate data structures understood by one system into equivalent structures understood by another.

Suppose, for instance, that I have a class Employee:

class Employee {
  private String lastName;
  private String firstName;
  private int age;
}

which has to be transformed into a class SalaryMan:

class SalaryMan {
  private String surName;
  private String givenName;
  private Integer yearsSinceBirth;
}

Is there a standard notation for describing that, for example, the lastName field of class Employee must be mapped to the surName field of class SalaryMan? I instinctively turned to UML but could not find anything.

Please, please, please refrain from giving answers that involve XSLT and XML. Please show me that there is a better way.