using variable as package/class name to call Class method
Is it possible to use a variable instead the actual class name when calling a class method?
Ex.
s var = "MyPackage.MyClass"
d ##class(var).Main()
Product version: IRIS 2021.1
$ZV: 2021.1.2
Discussion (6)2
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https://community.intersystems.com/post/using-variable-packageclass-name-call-class-method
If your class is instantiable (i.e. not an abstarct class) then
set obj = ##class(MyPackage.MyClass).%New() do obj.Main() set x=obj.OtherMethod(parameter)The other way is, to put the classname into a variable and
set var = "MyPackage.MyClass" do $classmethod(var,"Main") set x=$classmethod(var,"Othermethod",params) // or, if you have an instance set obj=##class(MyClass).%New() do $method(obj,"Main") set x=$method(obj,"Othermethod",params)That works great, thanks! What about to instantiate a new object?
Ex.
s var = "MyClass"
s obj=##class(var).%New()
set var="MyClass" execute "set obj=##class("_var_").%New()"a bit dirty but matches your request
you can use as following: s clsName = "MyClass" $System.
You can use $classmethod to invoke any class method, including %New, e.g.
set cls = "MyPackage.MyClass" set obj = $classmethod(cls,"%New")