[mike]
>I am running into a problem trying to subclass a java class from
>Jython2.0. The problem lies in the fact that the java class I extend from
>uses reflection to implement the template method pattern. The methods it is
>looking for is implemented in my jython class. Here is an example using the
>JUnit framework which illustrates my problem:
>
>---- example.py ----
>import java
>import junit
>
>class MyJavaClassTest(junit.framework.TestCase):
>
> def __init__(self, name):
> junit.framework.TestCase.__init__(self, name)
>
> def setUp(self):
> "@sig public void setUp()"
> pass
>
> def testMyJavaClass(self):
> "@sig public void testMyJavaClass()"
> pass
>
>junit.textui.TestRunner.run(MyJavaClassTest("testMyJavaClass"))
>---- end example.py ----
>
>Running this from the command line I get:
>
>$ cmd /c c:/devel/jython-2.1/jython.bat example.py
>.F
>Time: 0
>There was 1 failure:
>1) testMyJavaClass(org.python.proxies.__main__$MyJavaClassTest$1) "Method "testM
>yJavaClass" not found"
>
>FAILURES!!!
>Tests run: 1, Failures: 1, Errors: 0
>
>As you can see the JUnit TestCase class is using reflection to look for the
>testMyJavaClass method. Will this example only work if I run jythonc?
Yes.
>It
>looks like the autogenerated proxy class is ignoring the "@sig"
>information.
Correct. This is unlikely to change.
>Also, with the upcoming 2.1 release, will function attributes be used to
>replace the "@sig" syntax?
No.
You will have to override the runTest() method in order to subclass
TestCase:
import java, junit
class MyJavaClassTest(junit.framework.TestCase):
def __init__(self, name):
junit.framework.TestCase.__init__(self, name)
def setUp(self):
pass
def runTest(self):
self.testMyJavaClass()
def testMyJavaClass(self):
print "testing"
junit.textui.TestRunner.run(MyJavaClassTest("someName"))
regards,
finn
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