Class MultiDocValues
- java.lang.Object
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- org.apache.lucene.index.MultiDocValues
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public class MultiDocValues extends Object
A wrapper for CompositeIndexReader providing access to DocValues.NOTE: for multi readers, you'll get better performance by gathering the sub readers using
IndexReader.getContext()
to get the atomic leaves and then operate per-AtomicReader, instead of using this class.NOTE: This is very costly.
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Nested Class Summary
Nested Classes Modifier and Type Class Description static class
MultiDocValues.MultiSortedDocValues
Implements SortedDocValues over n subs, using an OrdinalMapstatic class
MultiDocValues.MultiSortedSetDocValues
Implements MultiSortedSetDocValues over n subs, using an OrdinalMapstatic class
MultiDocValues.OrdinalMap
maps per-segment ordinals to/from global ordinal space
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Method Summary
All Methods Static Methods Concrete Methods Modifier and Type Method Description static BinaryDocValues
getBinaryValues(IndexReader r, String field)
Returns a BinaryDocValues for a reader's docvalues (potentially merging on-the-fly)static Bits
getDocsWithField(IndexReader r, String field)
Returns a Bits for a reader's docsWithField (potentially merging on-the-fly)static NumericDocValues
getNormValues(IndexReader r, String field)
Returns a NumericDocValues for a reader's norms (potentially merging on-the-fly).static NumericDocValues
getNumericValues(IndexReader r, String field)
Returns a NumericDocValues for a reader's docvalues (potentially merging on-the-fly)static SortedSetDocValues
getSortedSetValues(IndexReader r, String field)
Returns a SortedSetDocValues for a reader's docvalues (potentially doing extremely slow things).static SortedDocValues
getSortedValues(IndexReader r, String field)
Returns a SortedDocValues for a reader's docvalues (potentially doing extremely slow things).
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Method Detail
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getNormValues
public static NumericDocValues getNormValues(IndexReader r, String field) throws IOException
Returns a NumericDocValues for a reader's norms (potentially merging on-the-fly).This is a slow way to access normalization values. Instead, access them per-segment with
AtomicReader.getNormValues(String)
- Throws:
IOException
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getNumericValues
public static NumericDocValues getNumericValues(IndexReader r, String field) throws IOException
Returns a NumericDocValues for a reader's docvalues (potentially merging on-the-fly)This is a slow way to access numeric values. Instead, access them per-segment with
AtomicReader.getNumericDocValues(String)
- Throws:
IOException
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getDocsWithField
public static Bits getDocsWithField(IndexReader r, String field) throws IOException
Returns a Bits for a reader's docsWithField (potentially merging on-the-fly)This is a slow way to access this bitset. Instead, access them per-segment with
AtomicReader.getDocsWithField(String)
- Throws:
IOException
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getBinaryValues
public static BinaryDocValues getBinaryValues(IndexReader r, String field) throws IOException
Returns a BinaryDocValues for a reader's docvalues (potentially merging on-the-fly)This is a slow way to access binary values. Instead, access them per-segment with
AtomicReader.getBinaryDocValues(String)
- Throws:
IOException
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getSortedValues
public static SortedDocValues getSortedValues(IndexReader r, String field) throws IOException
Returns a SortedDocValues for a reader's docvalues (potentially doing extremely slow things).This is an extremely slow way to access sorted values. Instead, access them per-segment with
AtomicReader.getSortedDocValues(String)
- Throws:
IOException
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getSortedSetValues
public static SortedSetDocValues getSortedSetValues(IndexReader r, String field) throws IOException
Returns a SortedSetDocValues for a reader's docvalues (potentially doing extremely slow things).This is an extremely slow way to access sorted values. Instead, access them per-segment with
AtomicReader.getSortedSetDocValues(String)
- Throws:
IOException
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