org.apache.arrow.vector.dictionary

Class ListSubfieldEncoder

java.lang.Object

org.apache.arrow.vector.dictionary.ListSubfieldEncoder

public class ListSubfieldEncoder
extends Object

Sub fields encoder/decoder for Dictionary encoded BaseListVector.

Constructor Summary

Constructors

Constructor and Description
ListSubfieldEncoder(Dictionary dictionary, BufferAllocator allocator)
ListSubfieldEncoder(Dictionary dictionary, BufferAllocator allocator, ArrowBufHasher hasher) Construct an instance.

Method Summary

Modifier and Type	Method and Description
BaseListVector	decodeListSubField(BaseListVector vector) Decodes a dictionary subfields encoded vector using the provided dictionary.
BaseListVector	encodeListSubField(BaseListVector vector) Dictionary encodes subfields for complex vector with a provided dictionary.

Methods inherited from class java.lang.Object

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

Constructor Detail

ListSubfieldEncoder

public ListSubfieldEncoder(Dictionary dictionary,
                           BufferAllocator allocator)

ListSubfieldEncoder

public ListSubfieldEncoder(Dictionary dictionary,
                           BufferAllocator allocator,
                           ArrowBufHasher hasher)

Construct an instance.

Method Detail

encodeListSubField

public BaseListVector encodeListSubField(BaseListVector vector)

Dictionary encodes subfields for complex vector with a provided dictionary. The dictionary must contain all values in the sub fields vector.

Parameters:

vector - vector to encode

Returns:

dictionary encoded vector

decodeListSubField

public BaseListVector decodeListSubField(BaseListVector vector)

Decodes a dictionary subfields encoded vector using the provided dictionary.

Parameters:

vector - dictionary encoded vector, its data vector must be int type

Returns:

vector with values restored from dictionary