Re: [Jython-users] How to test is an object a Java class?

[<wer...@gm...>]

Hello Peke,

I hope I understood your problem correctly.

How about:

from java.lang import String
my_javatype=type(String)

[...]

if object_to_be_tested is my_javatype:
    foo
    foo

Hope this works;at the moment I can´t try it out...

Kind regards

Markus
-------- Original-Nachricht --------
Datum: Thu, 2 Aug 2007 02:19:11 +0300
Von: "Pekka Laukkanen" <pe...@ik...>
An: "jython users" <jyt...@li...>
Betreff: [Jython-users] How to test is an object a Java class?

> Hello,
> 
> In my code I'd like to test is an imported thing a module, Python
> class or Java class. Testing for the two former is easy using
> types.ModuleType and types.ClassType, respectively, but the latter is
> more problematic. As the code below demonstrates there seems to be
> separate JavaClass type but that's not available in types.
> 
> >>> import types
> >>> import os.path
> >>> from java.lang import String
> >>> class C: pass
> ...
> >>> type(os.path)
> <type 'module'>
> >>> type(C)
> <type 'class'>
> >>> type(String)
> <type 'javaclass'>
> >>> type(os.path) is types.ModuleType
> 1
> >>> type(C) is types.ClassType
> 1
> >>> type(String) is types.ClassType
> 0
> >>> dir(types)
> ['ArrayType', 'BuiltinFunctionType', 'BuiltinMethodType', 'ClassType',
> 'CodeType', 'ComplexType', 'DictProxyType', 'DictType',
> 'DictionaryType', 'EllipsisType', 'FileType', 'FloatType',
> 'FrameType', 'FunctionType', 'GeneratorType', 'InstanceType',
> 'IntType', 'LambdaType', 'ListType', 'LongType', 'MethodType',
> 'ModuleType', 'NoneType', 'ObjectType', 'SliceType', 'StringType',
> 'StringTypes', 'TracebackType', 'TupleType', 'TypeType',
> 'UnboundMethodType', 'UnicodeType', 'XRangeType', '__doc__',
> 'classDictInit']
> 
> 
> What's the recommended way to test do I have a Java class or not?
> Additionally, should types actually contain JavaClassType? Adding
> Jython specific stuff there ought to be ok since ArrayType is there
> already. Should I submit a bug/feature request about adding
> JavaClassType?
> 
> Cheers,
>     .peke
> 
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