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PyLucene's Python to Java bridge (ctypes/cffi-based JCC)

Project description

Currently only as placeholder (because a base package jtypes.jvm is still in development)


PyLucene’s Python to Java bridge.


jtypes.jcc provides a bridge necessary to call into Java classes from Python via Java’s Native Invocation Interface (JNI).

PyPI record.

jtypes.jcc is a lightweight Python package, based on the ctypes or cffi library.
It is an almost fully compliant implementation of PyLucene’s JCC package by reimplementing its functionality in a clean Python instead of C++.

About JCC:

Borrowed from the original website:

What is JCC ?

JCC is a C++ code generator that produces a C++ object interface wrapping a Java library via Java’s Native Interface (JNI). JCC also generates C++ wrappers that conform to Python’s C type system making the instances of Java classes directly available to a Python interpreter. …

JCC is a Python extension written in Python and C++. It requires a Java Runtime Environment (JRE) to operate as it uses Java’s reflection APIs to do its work.


  • Various Java Runtime Environments such as Oracle Java 1.7+, Apple’s Java 1.6+ on Mac OS X as well as open source Java OpenJDK 1.7+ builds.



To install run:

python -m pip install --upgrade jtypes.jcc

To ensure everything is running correctly you can run the tests using:

python -m jt.jcc.tests


Visit development page

Installation from sources:

Clone the sources and run:

python -m pip install ./jtypes.jcc

or on development mode:

python -m pip install --editable ./jtypes.jcc


  • Development is strictly based on tox. To install it run:

    python -m pip install tox


Copyright 2015-2018 Adam Karpierz

Licensed under the Apache License, Version 2.0
Please refer to the accompanying LICENSE file.



2.22.0a8 (2018-09-03)

  • Synchro with JCC master branch (svn rev: 1839491).

2.22.0a6 (2018-05-23)

  • Update of the required setuptools version.

2.22.0a5 (2018-02-26)

  • Improvement and simplification of setup and packaging.

2.22.0a4 (2018-01-29)

  • Development moved to github.
  • General improvements and update.

2.22.0a3 (2017-01-10)

  • Initial version.

2.21.0a0 (2015-10-14)

  • Initial version.

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