Calling multiple import and export parameters in webservice

Hello Experts,

                I have requirement to create odata web service in which I have to call one method of one class.But,that method has multiple import parameters and one table.also in output I have to retrieve multiple export parameters(i.e. 2 tables).How can I import multiple import parameters and retrieve multiple export parameter in et_etityset.

For example,

In Getentityset method-

call method class name->method name

Importing

iv_emp_name = emp_name

iv_emp_age = emp_age

it_sal = it_salary(Import table parameter)

exporting(Output tables parameters)

et_outputdata

et_messages

Please guide me for this.

Thanks in advance.

Regards,

Aditi mahajan