MultiSearcher Filtering with more than one index is broken
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Key: LUCENE-958
URL: https://issues.apache.org/jira/browse/LUCENE-958
Project: Lucene - Java
Issue Type: Bug
Components: Search
Affects Versions: 2.2
Reporter: Ion Badita
Using filtering on MultiSarcher with more than one index is not working right.
Probable the best way to describe the problem is to give a small example:
Suppose we have 2 Indexes with two documents each:
Index1 {Doc(id:"A", content:".."), Doc(id:"B", content:"..")}
Index2 {Doc(id:"C", content:".."), Doc(id:"D", content:"..")}
When executing a query that returns all the documents and applying a
QueryFilter that generated the following BitSet (1, 0, 0, 0), it should filter
all the documents but first; the real results are: Doc(id:"A") and Doc(id:"B"),
this because the MultiSearcher applies the BitSet filter from the bitset's
position 0 for each Index.
The right way is to split the bitset in peaces: Index1 to get the bites form
0-1 and Index2 bites from 2-3.
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