org.apache.drill.exec.vector.complex.reader

Interface BaseReader

All Superinterfaces:

Positionable

All Known Subinterfaces:

BaseReader.DictReader, BaseReader.ListReader, BaseReader.MapReader, BaseReader.RepeatedListReader, BaseReader.RepeatedMapReader, BaseReader.ScalarReader, BigIntReader, BitReader, DateReader, Decimal18Reader, Decimal28DenseReader, Decimal28SparseReader, Decimal38DenseReader, Decimal38SparseReader, Decimal9Reader, FieldReader, Float4Reader, Float8Reader, IntervalDayReader, IntervalReader, IntervalYearReader, IntReader, RepeatedBigIntReader, RepeatedBitReader, RepeatedDateReader, RepeatedDecimal18Reader, RepeatedDecimal28DenseReader, RepeatedDecimal28SparseReader, RepeatedDecimal38DenseReader, RepeatedDecimal38SparseReader, RepeatedDecimal9Reader, RepeatedFloat4Reader, RepeatedFloat8Reader, RepeatedIntervalDayReader, RepeatedIntervalReader, RepeatedIntervalYearReader, RepeatedIntReader, RepeatedSmallIntReader, RepeatedTimeReader, RepeatedTimeStampReader, RepeatedTinyIntReader, RepeatedUInt1Reader, RepeatedUInt2Reader, RepeatedUInt4Reader, RepeatedUInt8Reader, RepeatedVar16CharReader, RepeatedVarBinaryReader, RepeatedVarCharReader, RepeatedVarDecimalReader, SmallIntReader, TimeReader, TimeStampReader, TinyIntReader, UInt1Reader, UInt2Reader, UInt4Reader, UInt8Reader, UntypedReader, Var16CharReader, VarBinaryReader, VarCharReader, VarDecimalReader

All Known Implementing Classes:

AbstractFieldReader, AbstractRepeatedMapReaderImpl, BigIntHolderReaderImpl, BigIntReaderImpl, BitHolderReaderImpl, BitReaderImpl, DateHolderReaderImpl, DateReaderImpl, Decimal18HolderReaderImpl, Decimal18ReaderImpl, Decimal28DenseHolderReaderImpl, Decimal28DenseReaderImpl, Decimal28SparseHolderReaderImpl, Decimal28SparseReaderImpl, Decimal38DenseHolderReaderImpl, Decimal38DenseReaderImpl, Decimal38SparseHolderReaderImpl, Decimal38SparseReaderImpl, Decimal9HolderReaderImpl, Decimal9ReaderImpl, Float4HolderReaderImpl, Float4ReaderImpl, Float8HolderReaderImpl, Float8ReaderImpl, IntervalDayHolderReaderImpl, IntervalDayReaderImpl, IntervalHolderReaderImpl, IntervalReaderImpl, IntervalYearHolderReaderImpl, IntervalYearReaderImpl, IntHolderReaderImpl, IntReaderImpl, NullableBigIntHolderReaderImpl, NullableBigIntReaderImpl, NullableBitHolderReaderImpl, NullableBitReaderImpl, NullableDateHolderReaderImpl, NullableDateReaderImpl, NullableDecimal18HolderReaderImpl, NullableDecimal18ReaderImpl, NullableDecimal28DenseHolderReaderImpl, NullableDecimal28DenseReaderImpl, NullableDecimal28SparseHolderReaderImpl, NullableDecimal28SparseReaderImpl, NullableDecimal38DenseHolderReaderImpl, NullableDecimal38DenseReaderImpl, NullableDecimal38SparseHolderReaderImpl, NullableDecimal38SparseReaderImpl, NullableDecimal9HolderReaderImpl, NullableDecimal9ReaderImpl, NullableFloat4HolderReaderImpl, NullableFloat4ReaderImpl, NullableFloat8HolderReaderImpl, NullableFloat8ReaderImpl, NullableIntervalDayHolderReaderImpl, NullableIntervalDayReaderImpl, NullableIntervalHolderReaderImpl, NullableIntervalReaderImpl, NullableIntervalYearHolderReaderImpl, NullableIntervalYearReaderImpl, NullableIntHolderReaderImpl, NullableIntReaderImpl, NullableSmallIntHolderReaderImpl, NullableSmallIntReaderImpl, NullableTimeHolderReaderImpl, NullableTimeReaderImpl, NullableTimeStampHolderReaderImpl, NullableTimeStampReaderImpl, NullableTinyIntHolderReaderImpl, NullableTinyIntReaderImpl, NullableUInt1HolderReaderImpl, NullableUInt1ReaderImpl, NullableUInt2HolderReaderImpl, NullableUInt2ReaderImpl, NullableUInt4HolderReaderImpl, NullableUInt4ReaderImpl, NullableUInt8HolderReaderImpl, NullableUInt8ReaderImpl, NullableVar16CharHolderReaderImpl, NullableVar16CharReaderImpl, NullableVarBinaryHolderReaderImpl, NullableVarBinaryReaderImpl, NullableVarCharHolderReaderImpl, NullableVarCharReaderImpl, NullableVarDecimalHolderReaderImpl, NullableVarDecimalReaderImpl, NullReader, RepeatedBigIntHolderReaderImpl, RepeatedBigIntReaderImpl, RepeatedBitHolderReaderImpl, RepeatedBitReaderImpl, RepeatedDateHolderReaderImpl, RepeatedDateReaderImpl, RepeatedDecimal18HolderReaderImpl, RepeatedDecimal18ReaderImpl, RepeatedDecimal28DenseHolderReaderImpl, RepeatedDecimal28DenseReaderImpl, RepeatedDecimal28SparseHolderReaderImpl, RepeatedDecimal28SparseReaderImpl, RepeatedDecimal38DenseHolderReaderImpl, RepeatedDecimal38DenseReaderImpl, RepeatedDecimal38SparseHolderReaderImpl, RepeatedDecimal38SparseReaderImpl, RepeatedDecimal9HolderReaderImpl, RepeatedDecimal9ReaderImpl, RepeatedDictReaderImpl, RepeatedFloat4HolderReaderImpl, RepeatedFloat4ReaderImpl, RepeatedFloat8HolderReaderImpl, RepeatedFloat8ReaderImpl, RepeatedIntervalDayHolderReaderImpl, RepeatedIntervalDayReaderImpl, RepeatedIntervalHolderReaderImpl, RepeatedIntervalReaderImpl, RepeatedIntervalYearHolderReaderImpl, RepeatedIntervalYearReaderImpl, RepeatedIntHolderReaderImpl, RepeatedIntReaderImpl, RepeatedListReaderImpl, RepeatedMapReaderImpl, RepeatedSmallIntHolderReaderImpl, RepeatedSmallIntReaderImpl, RepeatedTimeHolderReaderImpl, RepeatedTimeReaderImpl, RepeatedTimeStampHolderReaderImpl, RepeatedTimeStampReaderImpl, RepeatedTinyIntHolderReaderImpl, RepeatedTinyIntReaderImpl, RepeatedUInt1HolderReaderImpl, RepeatedUInt1ReaderImpl, RepeatedUInt2HolderReaderImpl, RepeatedUInt2ReaderImpl, RepeatedUInt4HolderReaderImpl, RepeatedUInt4ReaderImpl, RepeatedUInt8HolderReaderImpl, RepeatedUInt8ReaderImpl, RepeatedVar16CharHolderReaderImpl, RepeatedVar16CharReaderImpl, RepeatedVarBinaryHolderReaderImpl, RepeatedVarBinaryReaderImpl, RepeatedVarCharHolderReaderImpl, RepeatedVarCharReaderImpl, RepeatedVarDecimalHolderReaderImpl, RepeatedVarDecimalReaderImpl, SingleDictReaderImpl, SingleLikeRepeatedMapReaderImpl, SingleListReaderImpl, SingleMapReaderImpl, SmallIntHolderReaderImpl, SmallIntReaderImpl, TimeHolderReaderImpl, TimeReaderImpl, TimeStampHolderReaderImpl, TimeStampReaderImpl, TinyIntHolderReaderImpl, TinyIntReaderImpl, UInt1HolderReaderImpl, UInt1ReaderImpl, UInt2HolderReaderImpl, UInt2ReaderImpl, UInt4HolderReaderImpl, UInt4ReaderImpl, UInt8HolderReaderImpl, UInt8ReaderImpl, UnionListReader, UnionReader, UntypedHolderReaderImpl, UntypedReaderImpl, Var16CharHolderReaderImpl, Var16CharReaderImpl, VarBinaryHolderReaderImpl, VarBinaryReaderImpl, VarCharHolderReaderImpl, VarCharReaderImpl, VarDecimalHolderReaderImpl, VarDecimalReaderImpl

public interface BaseReader
extends Positionable

Nested Class Summary

Nested Classes

Modifier and Type	Interface and Description
static interface	BaseReader.ComplexReader
static interface	BaseReader.DictReader
static interface	BaseReader.ListReader
static interface	BaseReader.MapReader
static interface	BaseReader.RepeatedListReader
static interface	BaseReader.RepeatedMapReader
static interface	BaseReader.ScalarReader

Method Summary

Modifier and Type	Method and Description
void	copyAsValue(UnionWriter writer)
MaterializedField	getField()
TypeProtos.MajorType	getType()
String	getTypeString() Returns String representation of the reader's type.
TypeProtos.MinorType	getVectorType() Returns the type of the vector, not value.
boolean	isSet()
void	read(int index, UnionHolder holder)
void	read(UnionHolder holder)
void	read(ValueHolder holder)
void	reset()

Methods inherited from interface org.apache.drill.exec.vector.complex.Positionable

setPosition

Method Detail

getType

TypeProtos.MajorType getType()

getField

MaterializedField getField()

reset

void reset()

read

void read(UnionHolder holder)

read

void read(int index,
          UnionHolder holder)

copyAsValue

void copyAsValue(UnionWriter writer)

isSet

boolean isSet()

read

void read(ValueHolder holder)

getTypeString

String getTypeString()

Returns String representation of the reader's type. In case if getType() is primitive, the method is equivalent to #getType().getMinorType().name(). If the reader has minor type equal to TypeProtos.MinorType.DICT, DICT<keyMinorType,valueMinorType>, with keyMinorType and valueMinorType being key's and value's minor types respectively, will be returned. Used in typeOf UDF.

Returns:

String representation of reader's type.

getVectorType

TypeProtos.MinorType getVectorType()

Returns the type of the vector, not value. For all vectors, this is the same as the vector's getField().getType().getMinorType(). It is used to report the actual vector type in the getDrillType() function.