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git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1384278 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Michael McCandless 2012-09-13 11:32:19 +00:00
parent dc02cdd384
commit 882d6ec9c4
1 changed files with 7 additions and 6 deletions
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13
lucene/core/src/java/org/apache/lucene/index/CompositeReader.java
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@ -22,12 +22,13 @@ import java.util.List;
import org.apache.lucene.search.SearcherManager; // javadocs
import org.apache.lucene.store.*;
/** Instances of this reader type can only
be used to get stored fields from the underlying AtomicReaders,
but it is not possible to directly retrieve postings. To do that, get
the sub-readers via {@link #getSequentialSubReaders}.
Alternatively, you can mimic an {@link AtomicReader} (with a serious slowdown),
by wrapping composite readers with {@link SlowCompositeReaderWrapper}.
/**
Instances of this reader type can only
be used to get stored fields from the underlying AtomicReaders,
but it is not possible to directly retrieve postings. To do that, get
the {@link AtomicReaderContext} for all sub-readers via {@link #leaves}.
Alternatively, you can mimic an {@link AtomicReader} (with a serious slowdown),
by wrapping composite readers with {@link SlowCompositeReaderWrapper}.
<p>IndexReader instances for indexes on disk are usually constructed
with a call to one of the static <code>DirectoryReader.open()</code> methods,