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add a runtime changes entry for 1483 

git-svn-id: https://svn.apache.org/repos/asf/lucene/java/trunk@805815 13f79535-47bb-0310-9956-ffa450edef68
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Mark Robert Miller 2009-08-19 14:22:03 +00:00
parent 1d9a96c2fc
commit c7641880b4
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@ -187,6 +187,15 @@ Changes in runtime behavior
AttributeSource.clearAttributes() to work identical for Token as one for all AttributeSource.clearAttributes() to work identical for Token as one for all
AttributeImpl and the 6 separate AttributeImpls. (Uwe Schindler, Michael Busch) AttributeImpl and the 6 separate AttributeImpls. (Uwe Schindler, Michael Busch)
13. LUCENE-1483: When searching over multiple segments, a new Scorer is now created
for each segment. The Weight is created only once for the top level Searcher.
Each Scorer is passed the per-segment IndexReader. This will result in docids
in the Scorer being internal to the per-segment IndexReader. If a custom Scorer
implementation uses any caches/filters that rely on being based on the top level
IndexReader, it will need to be updated to use caches/filters on a per segment
basis. There is currently no way provided to rebase the docids in the Scorer to
the top level IndexReader. (Mark Miller, Mike McCandless)
API Changes API Changes
1. LUCENE-1419: Add expert API to set custom indexing chain. This API is 1. LUCENE-1419: Add expert API to set custom indexing chain. This API is