org.apache.arrow.vector.util

Class DictionaryUtility

java.lang.Object

org.apache.arrow.vector.util.DictionaryUtility

public class DictionaryUtility
extends Object

Constructor Summary

Constructors

Constructor and Description
DictionaryUtility()

Method Summary

Methods

Modifier and Type	Method and Description
static Field	toMemoryFormat(Field field, BufferAllocator allocator, Map<Long,Dictionary> dictionaries) Convert field and child fields that have a dictionary encoding to message format, so fields have the index type
static Field	toMessageFormat(Field field, DictionaryProvider provider, Set<Long> dictionaryIdsUsed) Convert field and child fields that have a dictionary encoding to message format, so fields have the dictionary type NOTE: in the message format, fields have the dictionary type in the memory format, they have the index type

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

DictionaryUtility

public DictionaryUtility()

Method Detail

toMessageFormat

public static Field toMessageFormat(Field field,
                    DictionaryProvider provider,
                    Set<Long> dictionaryIdsUsed)

Convert field and child fields that have a dictionary encoding to message format, so fields have the dictionary type NOTE: in the message format, fields have the dictionary type in the memory format, they have the index type

toMemoryFormat

public static Field toMemoryFormat(Field field,
                   BufferAllocator allocator,
                   Map<Long,Dictionary> dictionaries)

Convert field and child fields that have a dictionary encoding to message format, so fields have the index type