can't wrap weka because of attribute and method with the same name
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Key: PYLUCENE-16
URL: https://issues.apache.org/jira/browse/PYLUCENE-16
Project: PyLucene
Issue Type: Bug
Environment: Ubuntu Linux 10.04, Python 2.6, Java 6, PyLucene 3.5
Reporter: Bill Janssen
I'm trying to wrap Weka, a popular machine learning system, with PyLucene.
One of the Weka classes, weka.core.Utils, has a public static variable,
and a public static method, with the same name (see below). When I
compile it, JCC has no way to say that, and I get the following:
In file included from build/_test/__wrap__.cpp:5983:
build/_test/test.h:36: error: declaration of 'static jdouble
test::log2(jdouble)'
build/_test/test.h:32: error: conflicts with previous declaration 'jdouble
test::log2'
build/_test/__wrap__.cpp:5990: error: 'jdouble test::log2' is not a static
member of 'class test'
build/_test/__wrap__.cpp: In static member function 'static _jclass*
test::initializeClass()':
build/_test/__wrap__.cpp:6006: error: assignment of read-only location
'test::log2'
build/_test/__wrap__.cpp:6006: error: cannot convert 'jdouble' to
'jdouble(jdouble)' in assignment
build/_test/__wrap__.cpp: In static member function 'static void
t_test::initialize(PyObject*)':
build/_test/__wrap__.cpp:6048: error: call of overloaded
'make_descriptor(jdouble (&)(jdouble))' is ambiguous
/usr/local/lib/python2.6/dist-packages/JCC-2.11-py2.6-linux-x86_64.egg/jcc/sources/functions.h:102:
note: candidates are: PyObject* make_descriptor(_jclass* (*)()) <near match>
/usr/local/lib/python2.6/dist-packages/JCC-2.11-py2.6-linux-x86_64.egg/jcc/sources/functions.h:105:
note: PyObject* make_descriptor(PyObject* (*)(_jobject*
const&)) <near match>
/usr/local/lib/python2.6/dist-packages/JCC-2.11-py2.6-linux-x86_64.egg/jcc/sources/functions.h:106:
note: PyObject* make_descriptor(int (*)(PyTypeObject*,
PyObject*, java::lang::Object*)) <near match>
/usr/local/lib/python2.6/dist-packages/JCC-2.11-py2.6-linux-x86_64.egg/jcc/sources/functions.h:107:
note: PyObject* make_descriptor(jboolean) <near match>
/usr/local/lib/python2.6/dist-packages/JCC-2.11-py2.6-linux-x86_64.egg/jcc/sources/functions.h:108:
note: PyObject* make_descriptor(jbyte) <near match>
/usr/local/lib/python2.6/dist-packages/JCC-2.11-py2.6-linux-x86_64.egg/jcc/sources/functions.h:109:
note: PyObject* make_descriptor(jchar) <near match>
/usr/local/lib/python2.6/dist-packages/JCC-2.11-py2.6-linux-x86_64.egg/jcc/sources/functions.h:112:
note: PyObject* make_descriptor(jint) <near match>
/usr/local/lib/python2.6/dist-packages/JCC-2.11-py2.6-linux-x86_64.egg/jcc/sources/functions.h:113:
note: PyObject* make_descriptor(jlong) <near match>
/usr/local/lib/python2.6/dist-packages/JCC-2.11-py2.6-linux-x86_64.egg/jcc/sources/functions.h:114:
note: PyObject* make_descriptor(jshort) <near match>
error: command 'gcc' failed with exit status 1
%
Here's a simple test case which exhibits the bug. Compile this and put it in a
jar file, then try to wrap that jar.
public final class test {
/** The natural logarithm of 2. */
public static double log2 = Math.log(2);
/**
* Returns the logarithm of a for base 2.
*
* @param a a double
* @return the logarithm for base 2
*/
public static /*@pure@*/ double log2(double a) {
return Math.log(a) / log2;
}
}
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