On Fri, Jan 21, 2011 at 05:54:52PM -0800, Andi Vajda wrote:
>
> On Sat, 22 Jan 2011, Eric Hall wrote:
>
> >On Wed, Jan 19, 2011 at 07:15:11PM -0800, Andi Vajda wrote:
> >>
> >>On Wed, 19 Jan 2011, Eric Hall wrote:
> >>
> >>>On Wed, Jan 19, 2011 at 11:05:28AM -0800, Andi Vajda wrote:
> >>>>
> >>>>On Wed, 19 Jan 2011, Eric Hall wrote:
> >>>>
> >>>
> >>> Tha HashMap()... method works fine for storing the metadata, and luke
> >>>shows that its there. Of course getting the metadata back for later
> >>>comparison/display is also useful, and seemed like it would be
> >>>straightforward.... Naturally its not working using:
> >>>
> >>> indexMetaDataHashMap = reader.getCommitUserData()
> >>>
> >>> I get an empty hashmap back from the above. I also tried using:
> >
> > Whups, I was wrong, I don't get a HashMap type back, I get
> >a 'Map' type back (still empty). I don't know if that makes a difference
> >or not....
>
> That shouldn't make a difference, that interface is wrapped too.
> To see what the actual Java class is for that map, you can call getClass()
> on it. Maybe I'm missing something obvious here, how do you see that this
> Map instance is empty ?
I currently use:
if (indexMetaDataHashMap.isEmpty()):
## the map is empty...
else
## the map is not empty...
I also tried getting the size() (is zero), and getting the
keySet() (the set/list I get back says its empty (isEmpty()), and
I get nothing when I iterate over it).
Hopefully I'm doing all of those correctly of course.
>
> >>>
> >>> indexCommit = reader.getIndexCommit
> >>> indexMetaDataHashMap = indexCommit.getUserData()
> >>>
> >>>with the same result (empty hashmap). Is there a different way to do
> >>>this?
> >>>
> >>
> >>If you're getting a HashMap back then the PyLucene side of things is
> >>working. If it's empty it could mean that you're doing something wrong
> >>Lucene-wise or that you found a bug there. Could it be that you opened the
> >>IndexReader before the IndexWriter got committed ? If so, reopen() it
> >>after
> >>commit or move the opening code. If not, you may want to ask about this on
> >>the Lucene user list at java-u...@lucene.apache.org.
> >>
> >
> > I definitely open the reader after the writer is committed and
> > closed,
> >they're separate scripts.
>
> Maybe you're not using this API correctly ?
> http://lucene.apache.org/java/3_0_3/api/core/org/apache/lucene/index/IndexReader.html#getIndexCommit()
> Why aren't you calling reader.getCommitUserData() directly ? (the former is
> labeled Expert and liable to change but I don't know either APIs)
> http://lucene.apache.org/java/3_0_3/api/core/org/apache/lucene/index/IndexReader.html#getCommitUserData()
I am using reader.getCommitUserData(), I just tried using
the getIndexCommit() to see if it would work or not.
>
> Did you ask about this on java-u...@lucene.apache.org ?
I have not, that'll be the next thing, I wanted to check that
it should work in pylucene and I'm doing it correctly.
>
> Of course, to help with narrowing down the bug, you could write the same
> Java code directly and see if you encounter the same problem...
Yup, and/or check the luke source since its able to show me the
information.
Thanks again,
-eric
