Module org.apache.arrow.vector

Package org.apache.arrow.vector.complex.impl

Class UnionMapReader

java.lang.Object

org.apache.arrow.vector.complex.impl.AbstractFieldReader

org.apache.arrow.vector.complex.impl.UnionListReader

org.apache.arrow.vector.complex.impl.UnionMapReader

All Implemented Interfaces:

Iterable<String>, Positionable, BaseReader, BaseReader.ListReader, BaseReader.MapReader, BaseReader.RepeatedListReader, BaseReader.RepeatedMapReader, BaseReader.RepeatedStructReader, BaseReader.ScalarReader, BaseReader.StructReader, BigIntReader, BitReader, DateDayReader, DateMilliReader, Decimal256Reader, DecimalReader, DurationReader, ExtensionReader, FieldReader, FixedSizeBinaryReader, Float2Reader, Float4Reader, Float8Reader, IntervalDayReader, IntervalMonthDayNanoReader, IntervalYearReader, IntReader, LargeVarBinaryReader, LargeVarCharReader, SmallIntReader, TimeMicroReader, TimeMilliReader, TimeNanoReader, TimeSecReader, TimeStampMicroReader, TimeStampMicroTZReader, TimeStampMilliReader, TimeStampMilliTZReader, TimeStampNanoReader, TimeStampNanoTZReader, TimeStampSecReader, TimeStampSecTZReader, TinyIntReader, UInt1Reader, UInt2Reader, UInt4Reader, UInt8Reader, VarBinaryReader, VarCharReader, ViewVarBinaryReader, ViewVarCharReader

public class UnionMapReader
extends UnionListReader

Reader for a MapVector.

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.arrow.vector.complex.reader.BaseReader

BaseReader.ComplexReader, BaseReader.ListReader, BaseReader.MapReader, BaseReader.RepeatedListReader, BaseReader.RepeatedMapReader, BaseReader.RepeatedStructReader, BaseReader.ScalarReader, BaseReader.StructReader

Constructor Summary

Constructors

Constructor	Description
UnionMapReader(MapVector vector)	Construct a new reader for the given vector.

Method Summary

Modifier and Type	Method	Description
void	copyAsValue(DenseUnionWriter writer)
void	copyAsValue(UnionWriter writer)
void	copyAsValue(BaseWriter.MapWriter writer)
Types.MinorType	getMinorType()	Return the MinorType of the reader as MAP.
int	getPosition()
protected int	idx()
Iterator<String>	iterator()
FieldReader	key()	Start reading a key from the map entry.
void	read(int index, DenseUnionHolder holder)
void	read(DenseUnionHolder holder)
void	read(UnionHolder holder)
void	reset()
void	setKeyValueNames(String key, String value)	Set the key, value field names to read.
FieldReader	value()	Start reading a value element from the map entry.

Methods inherited from class org.apache.arrow.vector.complex.impl.UnionListReader

copyAsValue, getField, isSet, next, read, reader, readObject, setPosition, size

Methods inherited from class org.apache.arrow.vector.complex.impl.AbstractFieldReader

copyAsField, copyAsField, copyAsField, copyAsField, copyAsField, copyAsField, copyAsField, copyAsField, copyAsField, copyAsField, copyAsField, copyAsField, copyAsField, copyAsField, copyAsField, copyAsField, copyAsField, copyAsField, copyAsField, copyAsField, copyAsField, copyAsField, copyAsField, copyAsField, copyAsField, copyAsField, copyAsField, copyAsField, copyAsField, copyAsField, copyAsField, copyAsField, copyAsField, copyAsField, copyAsField, copyAsField, copyAsField, copyAsField, copyAsField, copyAsField, copyAsField, copyAsField, copyAsField, copyAsValue, copyAsValue, copyAsValue, copyAsValue, copyAsValue, copyAsValue, copyAsValue, copyAsValue, copyAsValue, copyAsValue, copyAsValue, copyAsValue, copyAsValue, copyAsValue, copyAsValue, copyAsValue, copyAsValue, copyAsValue, copyAsValue, copyAsValue, copyAsValue, copyAsValue, copyAsValue, copyAsValue, copyAsValue, copyAsValue, copyAsValue, copyAsValue, copyAsValue, copyAsValue, copyAsValue, copyAsValue, copyAsValue, copyAsValue, copyAsValue, copyAsValue, copyAsValue, copyAsValue, copyAsValue, copyAsValue, copyAsValue, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, read, readBigDecimal, readBigDecimal, readBoolean, readBoolean, readByte, readByte, readByteArray, readByteArray, readCharacter, readCharacter, readDouble, readDouble, readDuration, readDuration, reader, readFloat, readFloat, readInteger, readInteger, readLocalDateTime, readLocalDateTime, readLong, readLong, readObject, readPeriod, readPeriod, readPeriodDuration, readPeriodDuration, readShort, readShort, readString, readString, readText, readText

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.arrow.vector.complex.reader.BaseReader

copyAsValue, copyAsValue, read, read, read, reset

Methods inherited from interface org.apache.arrow.vector.complex.reader.BaseReader.RepeatedMapReader

copyAsValue

Methods inherited from interface java.lang.Iterable

forEach, iterator, spliterator

Methods inherited from interface org.apache.arrow.vector.complex.Positionable

getPosition

Constructor Details

UnionMapReader

public UnionMapReader(MapVector vector)

Construct a new reader for the given vector.

Parameters:

vector - Vector to read from.

Method Details

setKeyValueNames

public void setKeyValueNames(String key,
 String value)

Set the key, value field names to read.

Parameters:

key - Field name for key.

value - Field name for value.

key

public FieldReader key()

Start reading a key from the map entry.

Returns:

reader that can be used to read the key.

value

public FieldReader value()

Start reading a value element from the map entry.

Returns:

reader that can be used to read the value.

getMinorType

public Types.MinorType getMinorType()

Return the MinorType of the reader as MAP.

Specified by:

getMinorType in interface BaseReader

Overrides:

getMinorType in class UnionListReader

getPosition

public int getPosition()

Specified by:

getPosition in interface Positionable

idx

protected int idx()

reset

public void reset()

Specified by:

reset in interface BaseReader

iterator

public Iterator<String> iterator()

Specified by:

iterator in interface Iterable<String>

read

public void read(UnionHolder holder)

Specified by:

read in interface BaseReader

copyAsValue

public void copyAsValue(UnionWriter writer)

Specified by:

copyAsValue in interface BaseReader

read

public void read(DenseUnionHolder holder)

Specified by:

read in interface BaseReader

read

public void read(int index,
 DenseUnionHolder holder)

Specified by:

read in interface BaseReader

copyAsValue

public void copyAsValue(DenseUnionWriter writer)

Specified by:

copyAsValue in interface BaseReader

copyAsValue

public void copyAsValue(BaseWriter.MapWriter writer)

Specified by:

copyAsValue in interface BaseReader.RepeatedMapReader