Hello Thomas, Thanks for the update on the facets! I just tested this with my PyLucene 4.8.0 and can confirm it works great:
Indexed 2 documents with facets. search by term 'white' ... Categories: 1 'root' (2) Root-a-Categories: 3 'f1' (2) 'f2' (1) 'f3' (1) Author: 2 'Bob' (1) 'Lisa' (1) search by term 'car' ... Categories: 1 'root' (1) Root-a-Categories: 2 'f1' (1) 'f2' (1) Author: 1 'Bob' (1) search all documents ... Categories: 1 'root' (2) Root-a-Categories: 3 'f1' (2) 'f2' (1) 'f3' (1) Author: 2 'Bob' (1) 'Lisa' (1) Best regards, —Ed On Jun 2, 2014, at 8:04, Thomas Koch <k...@orbiteam.de> wrote: > Am 30.05.2014 um 23:08 schrieb Andi Vajda <va...@apache.org>: > >> Thanks Thomas ! >> Once you do that maybe it's time to make a 4.8.1 release too. >> Let me know when you're ready with a fix. > > TLDR; fix is available: I've now revised the FacetExample.py to use the new > API - it's tested to work with pylucene-4.8.0-1 > The source can be found here: > https://dl.dropboxusercontent.com/u/4384120/Python/FacetExample.py > Andi, can you please update the file in the repo? thanks. > > details: I should correct myself. The FacetExample was 'ported' to 4.x (with > new fully qualified imports) already. > However in Java Lucene Release 4.7.0 [2014-02-26] some API Changes did break > the code: > LUCENE-5339: The facet module was simplified/reworked to make the APIs more > approachable to new users. > > Note: when migrating to the new API, you must pass the Document that is > returned > from FacetConfig.build() to IndexWriter.addDocument(). > (Shai Erera, Gilad Barkai, Rob Muir, Mike McCandless) > see https://issues.apache.org/jira/browse/LUCENE-5339 for details! > (This was really a good and needed simplification of the Facet API!) > > Some notes for those interested in facet search in Lucene: > > - there are some Java samples available with Lucene Java, e.g. > > http://svn.apache.org/repos/asf/lucene/dev/branches/lucene_solr_4_8/lucene/demo/src/java/org/apache/lucene/demo/facet/SimpleFacetsExample.java > (which I took as a reference) > > - back in 4.4 there was some good documentation (besides Javadocs) - the > "Apache Lucene Faceted Search "User's Guide > http://lucene.apache.org/core/4_4_0/facet/org/apache/lucene/facet/doc-files/userguide.html > > I can't find it for more recent versions though and according to Changelog it > was removed with 4.5 because it's outdated: > LUCENE-4894: remove facet userguide as it was outdated. Partially absorbed > into > package's documentation and classes javadocs. > (Shai Erera) > (still think it's partially useful introductory reading though...) > > - developer hint: > > whereas in Java you can write > doc.add(new FacetField("Publish Date", "2010", "10", "20")); > here "Publish Date" is the 'dimension' > and "2010", "10", "20" is the 'path' > > in Python you need to declare the path as an array argument: > doc.add(FacetField("Publish Date", ["2010", "10", "20"])) > > > Java introduced 'varargs' feature to pass unspecified number of argument to a > method in JDK 5.0. > Python can do similar by using the *args which can be passed a list of > arguments - as positional arguments. > Seems however JCC does for some (probably good) reason not map Java varargs > to python *args. > > > regards, > Thomas
