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-LeafReader, instead of using this class.NOTE: This is very costly.
- WARNING: This API is experimental and might change in incompatible ways in the next release.
- NOTE: This API is for internal purposes only and might change in incompatible ways in the next release.
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Nested Class Summary
Nested Classes Modifier and Type Class Description static classMultiDocValues.MultiSortedDocValuesImplements SortedDocValues over n subs, using an OrdinalMapstatic classMultiDocValues.MultiSortedSetDocValuesImplements MultiSortedSetDocValues over n subs, using an OrdinalMap
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Method Summary
All Methods Static Methods Concrete Methods Modifier and Type Method Description static BinaryDocValuesgetBinaryValues(IndexReader r, String field)Returns a BinaryDocValues for a reader's docvalues (potentially merging on-the-fly)static NumericDocValuesgetNormValues(IndexReader r, String field)Returns a NumericDocValues for a reader's norms (potentially merging on-the-fly).static NumericDocValuesgetNumericValues(IndexReader r, String field)Returns a NumericDocValues for a reader's docvalues (potentially merging on-the-fly)static SortedNumericDocValuesgetSortedNumericValues(IndexReader r, String field)Returns a SortedNumericDocValues for a reader's docvalues (potentially merging on-the-fly)static SortedSetDocValuesgetSortedSetValues(IndexReader r, String field)Returns a SortedSetDocValues for a reader's docvalues (potentially doing extremely slow things).static SortedDocValuesgetSortedValues(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
LeafReader.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)- 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)- Throws:
IOException
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getSortedNumericValues
public static SortedNumericDocValues getSortedNumericValues(IndexReader r, String field) throws IOException
Returns a SortedNumericDocValues for a reader's docvalues (potentially merging on-the-fly)This is a slow way to access sorted numeric values. Instead, access them per-segment with
LeafReader.getSortedNumericDocValues(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
LeafReader.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
LeafReader.getSortedSetDocValues(String)- Throws:
IOException
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