Package org.apache.lucene.index
Class ReaderUtil
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- org.apache.lucene.index.ReaderUtil
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public final class ReaderUtil extends Object
Common util methods for dealing withIndexReaders andIndexReaderContexts.- NOTE: This API is for internal purposes only and might change in incompatible ways in the next release.
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Method Summary
All Methods Static Methods Concrete Methods Modifier and Type Method Description static IndexReaderContextgetTopLevelContext(IndexReaderContext context)Walks up the reader tree and return the given context's top level reader context, or in other words the reader tree's root context.static intsubIndex(int n, int[] docStarts)Returns index of the searcher/reader for documentnin the array used to construct this searcher/reader.static intsubIndex(int n, List<LeafReaderContext> leaves)Returns index of the searcher/reader for documentnin the array used to construct this searcher/reader.
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Method Detail
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getTopLevelContext
public static IndexReaderContext getTopLevelContext(IndexReaderContext context)
Walks up the reader tree and return the given context's top level reader context, or in other words the reader tree's root context.
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subIndex
public static int subIndex(int n, int[] docStarts)Returns index of the searcher/reader for documentnin the array used to construct this searcher/reader.
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subIndex
public static int subIndex(int n, List<LeafReaderContext> leaves)Returns index of the searcher/reader for documentnin the array used to construct this searcher/reader.
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