java - Equivalent in Objective c of BeanUtils.copyProperties. -

i know if have equivalent in objective c of java's methode "beanutils.copyproperties(bean1, bean2);" ?

or other solution, cast motherobject childobject :

@interface motherbean : nsobject{ ...} @interface childbean : motherbean { ...}  motherbean m = [motherbean new]; childbean f = m; 

with first tests it's work have warning : "incompatible pointer types returning ...";

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i use wsdl2objc , generate bean, , name of can change between 2 generation :-/

i prefere work child , change name in definition

thanks

anthony

take @ commons-beanutils package. has lots of property method copy stuff. in particular:

propertyutils.copyproperties(bean1, bean2); 

however, second question, you're trying downcast instance of parent class child class?

i'm not sure how legal in oo language. sure can forcibly cast:

// not legal because can't case 1 class anther // unless actual instance type (not declared type of variable, // constructed type) either casted class or subclass. parent p = new parent(); child c = (child) p; 

but you'd classcastexception , since can't treat instance of parent class if child class (only other way around). either of these legal however:

// legal because you're upcasting, fine child c = new child(); parent p = c;  // legal because instance "p" // instance of "child" class, downcast legal. parent p = new child(); child c = (child) p;