c# - Constraints on parameter to implement two interfaces -

i'm trying understand workings of abap-oo.

in c# possible restrict type type conform @ least (multiple) interfaces through constraints in generics doing:

where t : iaminterfacea, iaminterfaceb 

is possible archive same in abap-oo? want pass in object parameter method conforms 2 interfaces.

---

for example want have 2 interfaces:

• ivalidate
• isaveable

i not want have interface combining methods 2 provide separately.

for example there manager class wants save objects if they're valid:

manager.save(/* <object conforms both interfaces ivalidate , isaveable> */ ); 

so if got simple class simpledata : ivalidate, isaveable objects of class passed method object class implements isaveable cannot passed in.

in c# define save method generic method:

static bool save<t>(t dataobject) t : ivalidate, isaveable { /* ... */ } 

how in abap-oo, if possible?

in abap, have either create combining interface or check condition @ run-time (which not advise). can use single type parameter. more complex constraints ones quoted not possible far know.