On Tue, 01 Apr 2008 20:20:56 +0200, Andi Vajda <[EMAIL PROTECTED]>
wrote:
On Tue, 1 Apr 2008, Dirk Rothe wrote:
Ok, but by inspecting the java code, this was pretty trivial to
implement in Python. Only curiosity, but do you think the java
version would be (significantly) faster. I'm not sure I understand
the performance implications from the jcc bridge.
I don't know. How about measuring it ?
The jcc bridge involves converting some literals from java to python
(such as strings), releasing the GIL (global interpreter lock) when
leaving python and reacquiring it when returnig.
The jcc bridge also keeps track of the java objects returned to
python so that they don't get garbage collected until python no longer
uses them. This is implemented via a C++ multimap.
It's been shown before that using a python HitCollector (used in a
very tight loop by the Lucene core) is significantly slower than using
the java equivalent [1].
Ok, I will try to measure it.
After I understand the makefile jar/java stuff better - and I guess
thats after my theoretical CS Exams next Week ;).
To add a JAR file to the PyLucene build, look at line 171 in the
Makefile for the current list of JAR files. Looking above that line
should show you how to add another JAR file.
Yeah, I have seen that, doesnt look that hard.
thnx, dirk
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