Thomas Koch <k...@orbiteam.de> wrote:
> > ...
> > I realize that PyLucene doesn't make that easy because it doesn't warn
> > about deprecated API use.
> >
> [Thomas Koch] Well this is a general drawback in Python as interpreted
> language I guess - wrong interfaces are only detected at runtime and are
> thus harder to test (unless you describe the interfaces and use tools such
> as pylint...)
> I wouldn't expect PyLucene to provide direct support here.
>
> > One thing I could add to JCC is a command line flag to _not_ wrap any
> > deprecated APIs. With that applied to PyLucene, one could then find all
> > errors they'd be hitting when upgrading to 3.x. That being said, I don't
> > see
> > the difference between this and just upgrading to 3.x and looking for
> > the
> > very same errors since, by definition, 3.0 == 2.9 - deprecations. This
> > explains why I haven't implemented this feature so far.
> >
> > Andi..
> >
> [Thomas Koch] Thanks for the explanation - that makes it more clear to me
> now.
>
> The question remains if it's feasible to support 2.x *and* 3.x - as Bill
> mentioned "... I'd like to make it work on both." - me too. I did fear that
> this makes things much more complicated and you end up with code "if
> lucene.VERSION.split('.')[0]>2: ... else ..." - we did that some time ago
> during GCJ and JCC based versions of PyLucene, but at that time it was
> merely a matter of different imports and init stuff (initVM).
>
> But I understand now that as long as you remove deprecated code from 2.9 it
> *should* work with 2.9 and 3.0 as well! Right?
>
> e.g.
> <method>Hits search(Query query)
> Is now deprecated as
> "Hits will be removed in Lucene 3.0"
>
> 2.9 already supports
> <method>TopDocs search(Query, Filter, int)
> Which one should use instead.
>
> The problem here is that - as far as I understand - you can make it work
> with 2.9 and 3.0 - but then you loose backward compatibility with any 2.x
> version before 2.9.... The point is that you may then end up forcing your
> users (admins) to install a newer version of PyLucene - which people may not
> want to do...
I changed my code to this:
try:
from lucene import TopDocs
except ImportError:
_have_topdocs = False
else:
_have_topdocs = True
[...]
if _have_topdocs:
topdocs = s.search(parsed_query, count or 1000000)
for hit in topdocs.scoreDocs:
doc = s.doc(hit.doc)
score = hit.score
rval.append((doc.get("id"), score,))
else:
hits = s.search(parsed_query)
for hit in hits:
doc = Hit.cast_(hit).getDocument()
score = Hit.cast_(hit).getScore()
rval.append((doc.get("id"), score,))
Unfortunately, 2.9.3 now coredumps on me (OS X 10.5.8, system python 2.5):
Exception Type: EXC_BAD_ACCESS (SIGBUS)
Exception Codes: KERN_PROTECTION_FAILURE at 0x0000000000000000
Crashed Thread: 14
VM state:not at safepoint (normal execution)
VM Mutex/Monitor currently owned by a thread: None
Heap
def new generation total 4544K, used 2441K [0x0d5a0000, 0x0da80000,
0x0fd00000)
eden space 4096K, 48% used [0x0d5a0000, 0x0d7926a8, 0x0d9a0000)
from space 448K, 100% used [0x0da10000, 0x0da80000, 0x0da80000)
to space 448K, 0% used [0x0d9a0000, 0x0d9a0000, 0x0da10000)
tenured generation total 60544K, used 722K [0x0fd00000, 0x13820000,
0x2d5a0000)
the space 60544K, 1% used [0x0fd00000, 0x0fdb49c0, 0x0fdb4a00, 0x13820000)
compacting perm gen total 8192K, used 2246K [0x2d5a0000, 0x2dda0000,
0x315a0000)
the space 8192K, 27% used [0x2d5a0000, 0x2d7d1ba8, 0x2d7d1c00, 0x2dda0000)
ro space 8192K, 63% used [0x315a0000, 0x31abcf60, 0x31abd000, 0x31da0000)
rw space 12288K, 43% used [0x31da0000, 0x322d35a8, 0x322d3600, 0x329a0000)
Virtual Machine arguments:
JVM args: -Xms64m -Xmx512m -Xss100m -Djava.awt.headless=true
Java command: <unknown>
launcher type: generic
Thread 14 Crashed:
0 libjvm.dylib 0x019b81cb 0x1915000 + 668107
1 libjvm.dylib 0x01b23c47 JNI_CreateJavaVM_Impl + 96759
2 libjcc.dylib 0x0073368d
JCCEnv::callObjectMethod(_jobject*, _jmethodID*, ...) const + 73
3 libjcc.dylib 0x00733254 JCCEnv::iterator(_jobject*)
const + 34
4 _lucene.so 0x013c0e65 _object*
get_iterator<java::util::t_List>(java::util::t_List*) + 59
5 org.python.python 0x00121dfd PyObject_GetIter + 107
6 org.python.python 0x0018edbd PyEval_EvalFrameEx + 15227
7 org.python.python 0x00191173 PyEval_EvalCodeEx + 1638
I'm going back to 2.9.2 :-).
Bill
