Module org.apache.arrow.vector

Package org.apache.arrow.vector.dictionary

Interface DictionaryProvider

All Known Implementing Classes:

ArrowFileReader, ArrowReader, ArrowScannerReader, ArrowStreamReader, CDataDictionaryProvider, DictionaryProvider.MapDictionaryProvider, JsonFileReader, NativeScanner.NativeReader, OrcStripeReader

public interface DictionaryProvider

A manager for association of dictionary IDs to their corresponding Dictionary.

Nested Class Summary

Nested Classes

Modifier and Type	Interface	Description
static class	DictionaryProvider.MapDictionaryProvider	Implementation of DictionaryProvider that is backed by a hash-map.

Method Summary

Modifier and Type	Method	Description
Set<Long>	getDictionaryIds()	Get all dictionary IDs.
Dictionary	lookup(long id)	Return the dictionary for the given ID.

Method Details

lookup

Dictionary lookup(long id)

Return the dictionary for the given ID.

getDictionaryIds

Set<Long> getDictionaryIds()

Get all dictionary IDs.