Re: mRFC 0024: Full text indexing in Midgard

Hi,

Different options for linking Lucene functionality with midgard-core
as described in mRFC 0024:

* lucene4j (http://incubator.apache.org/lucene4c/)
  Not yet stable, and not too actively maintained. Based on APR.
  Author seems to think that using Lucene Java with gcj is a better option.

* CLucene (http://clucene.sourceforge.net/)
  C++ library, would require C++ code in midgard-core.

* Lucene Java (http://lucene.apache.org/java/) with gcj
(http://gcc.gnu.org/java/)
  The "official" Lucene version compiled with gcj to a native library.
  Accessible from midgard-core through the standard JNI methods.

* Remote calls to a separate indexer process
  Used by MidCOM indexer.

After evaluating all the above options I've come to the conclusion
that using Lucene Java with gcj seems like the best choise for
midgard-core. We could distribute the Lucene jar along the
midgard-core sources to avoid any external dependencies besides gcj.
We could even use the same mechanism for the indexer process, and
avoid the JRE dependency alltogether.

Unless anyone objects, I will proceed with the gcj integration.

BR,

Jukka Zitting

--
Yukatan - http://yukatan.fi/ - [email protected]
Software craftmanship, JCR consulting, and Java development