What does it do? The statement tt:create-object can be used to create an instance of a global ABAP Objects class in an ST program. var can be used to specify a variable or a parameter of the ST program. The variable or parameter must have been created as a class reference variable or an interface reference variable with the addition ref-type. The object is created in the ABAP_ISESS of the ABAP program that called the ST program. If the attribute class is not specified, var must be a class reference variable and an instance of the corresponding class is created. If the attribute class is specified, an instance of the specified class is created. A global class from the ABAP class library can be specified for class, either more special or the same as the static type of the reference variable var:
If var is a class reference variable, class must be the class or subclass of the class of var.
If var is an interface reference variable, class must implement the interface of var. The interface parameters para1, para2, ... of the instance constructor of the class of the object can or must be bound to actual parameters, using the ST statement tt:with-parameter. The same rules apply here as to regular method calls. Constructor exceptions are also handled in the same way as exceptions for regular method calls. After the object has been created, the reference variable var points to the object and can be used to call instance methods.
ABAP_EXAMPLE_VX5 The transformation DEMO_ST_WITH_CREATE_OBJECT uses the variable ovar to create an object of class CL_DEMO_CREATE_FROM_ST and passes the data root PARA to the parameter REPL of its instance constructor. The method CONVERT is then called, whose input/output parameter is assigned the variable result. Note that a data root cannot be assigned to an input/output parameter, neither in serializations nor in deserializations. TRNS DEMO_ST_WITH_CREATE_OBJECT The transformation is called in class CL_DEMO_CREATE_OBJECT_FROM_ST. The constructor of class CL_DEMO_CREATE_FROM_ST is defined as follows: METH CL_DEMO_CREATE_FROM_ST=>CONSTRUCTOR The method CONVERT is defined as follows: METH CL_DEMO_CREATE_FROM_ST=>CONVERT The result of the transformation is as follows: < Result>1*2*3 < /Result> ABAP_EXAMPLE_END
