Uses of Interface
org.apache.drill.exec.vector.accessor.ColumnReader

Packages that use ColumnReader

Package	Description
org.apache.drill.exec.physical.rowSet	Provides a set of tools to work with row sets.
org.apache.drill.exec.vector.accessor	Provides a light-weight, simplified set of column readers and writers that can be plugged into a variety of row-level readers and writers.
org.apache.drill.exec.vector.accessor.reader	Provides the reader hierarchy as explained in the API package.
org.apache.drill.exec.vector.accessor.writer	Implementation of the vector writers.
org.apache.drill.exec.vector.accessor.writer.dummy	This package provides a "dummy" set of writers.

Uses of ColumnReader in org.apache.drill.exec.physical.rowSet

Subinterfaces of ColumnReader in org.apache.drill.exec.physical.rowSet

Modifier and Type	Interface and Description
interface	RowSetReader Reader for all types of row sets: those with or without a selection vector.

Classes in org.apache.drill.exec.physical.rowSet that implement ColumnReader

Modifier and Type	Class and Description
class	RowSetReaderImpl Reader implementation for a row set.

Uses of ColumnReader in org.apache.drill.exec.vector.accessor

Subinterfaces of ColumnReader in org.apache.drill.exec.vector.accessor

Modifier and Type	Interface and Description
interface	ArrayReader Generic array reader.
interface	DictReader
interface	ObjectReader Defines a reader to get values for value vectors using a simple, uniform interface modeled after a JSON object.
interface	ScalarReader Defines a reader to obtain values from value vectors using a simple, uniform interface.
interface	TupleReader Interface for reading from tuples (rows or maps).
interface	VariantReader Reader for a Drill "union vector." The union vector is presented as a reader over a set of variants.

Classes in org.apache.drill.exec.vector.accessor that implement ColumnReader

Modifier and Type	Class and Description
static class	ColumnAccessors.BigIntColumnReader
static class	ColumnAccessors.DateColumnReader
static class	ColumnAccessors.Decimal18ColumnReader
static class	ColumnAccessors.Decimal28SparseColumnReader
static class	ColumnAccessors.Decimal38SparseColumnReader
static class	ColumnAccessors.Decimal9ColumnReader
static class	ColumnAccessors.Float4ColumnReader
static class	ColumnAccessors.Float8ColumnReader
static class	ColumnAccessors.IntColumnReader
static class	ColumnAccessors.IntervalColumnReader
static class	ColumnAccessors.IntervalDayColumnReader
static class	ColumnAccessors.IntervalYearColumnReader
static class	ColumnAccessors.SmallIntColumnReader
static class	ColumnAccessors.TimeColumnReader
static class	ColumnAccessors.TimeStampColumnReader
static class	ColumnAccessors.TinyIntColumnReader
static class	ColumnAccessors.UInt1ColumnReader
static class	ColumnAccessors.UInt2ColumnReader
static class	ColumnAccessors.UInt4ColumnReader
static class	ColumnAccessors.UInt8ColumnReader
static class	ColumnAccessors.Var16CharColumnReader
static class	ColumnAccessors.VarBinaryColumnReader
static class	ColumnAccessors.VarCharColumnReader
static class	ColumnAccessors.VarDecimalColumnReader

Methods in org.apache.drill.exec.vector.accessor that return ColumnReader

Modifier and Type	Method and Description
ColumnReader	ObjectReader.reader() Gets the reader as a generic type, for dynamic programming.

Methods in org.apache.drill.exec.vector.accessor with parameters of type ColumnReader

Modifier and Type	Method and Description
void	ColumnWriter.copy(ColumnReader from) Copy a single value from the given reader, which must be of the same type as this writer.
void	ColumnAccessors.TinyIntColumnWriter.copy(ColumnReader from)
void	ColumnAccessors.UInt1ColumnWriter.copy(ColumnReader from)
void	ColumnAccessors.UInt2ColumnWriter.copy(ColumnReader from)
void	ColumnAccessors.SmallIntColumnWriter.copy(ColumnReader from)
void	ColumnAccessors.IntColumnWriter.copy(ColumnReader from)
void	ColumnAccessors.UInt4ColumnWriter.copy(ColumnReader from)
void	ColumnAccessors.Float4ColumnWriter.copy(ColumnReader from)
void	ColumnAccessors.TimeColumnWriter.copy(ColumnReader from)
void	ColumnAccessors.IntervalYearColumnWriter.copy(ColumnReader from)
void	ColumnAccessors.Decimal9ColumnWriter.copy(ColumnReader from)
void	ColumnAccessors.BigIntColumnWriter.copy(ColumnReader from)
void	ColumnAccessors.UInt8ColumnWriter.copy(ColumnReader from)
void	ColumnAccessors.Float8ColumnWriter.copy(ColumnReader from)
void	ColumnAccessors.DateColumnWriter.copy(ColumnReader from)
void	ColumnAccessors.TimeStampColumnWriter.copy(ColumnReader from)
void	ColumnAccessors.Decimal18ColumnWriter.copy(ColumnReader from)
void	ColumnAccessors.IntervalDayColumnWriter.copy(ColumnReader from)
void	ColumnAccessors.IntervalColumnWriter.copy(ColumnReader from)
void	ColumnAccessors.Decimal38SparseColumnWriter.copy(ColumnReader from)
void	ColumnAccessors.Decimal28SparseColumnWriter.copy(ColumnReader from)
void	ColumnAccessors.VarBinaryColumnWriter.copy(ColumnReader from)
void	ColumnAccessors.VarCharColumnWriter.copy(ColumnReader from)
void	ColumnAccessors.Var16CharColumnWriter.copy(ColumnReader from)
void	ColumnAccessors.VarDecimalColumnWriter.copy(ColumnReader from)

Uses of ColumnReader in org.apache.drill.exec.vector.accessor.reader

Classes in org.apache.drill.exec.vector.accessor.reader that implement ColumnReader

Modifier and Type	Class and Description
class	AbstractObjectReader
class	AbstractScalarReader
static class	AbstractScalarReader.NullReader
static class	AbstractScalarReader.ScalarObjectReader
class	AbstractTupleReader Reader for a tuple (a row or a map.) Provides access to each column using either a name or a numeric index.
static class	AbstractTupleReader.TupleObjectReader
class	ArrayReaderImpl Reader for an array-valued column.
static class	ArrayReaderImpl.ArrayObjectReader Object representation of an array reader.
class	BaseScalarReader Column reader implementation that acts as the basis for the generated, vector-specific implementations.
static class	BaseScalarReader.BaseFixedWidthReader
static class	BaseScalarReader.BaseVarWidthReader
class	BitColumnReader Specialized reader for bit columns.
class	DictEntryReader Reader for a Dict entry.
class	DictReaderImpl
static class	DictReaderImpl.DictObjectReader
class	MapReader Reader for a Drill Map type.
class	OffsetVectorReader Reader for an offset vector.
class	UnionReaderImpl Reader for a union vector.
static class	UnionReaderImpl.UnionObjectReader

Methods in org.apache.drill.exec.vector.accessor.reader that return ColumnReader

Modifier and Type	Method and Description
abstract ColumnReader	AbstractObjectReader.reader()
ColumnReader	AbstractScalarReader.ScalarObjectReader.reader()
ColumnReader	AbstractTupleReader.TupleObjectReader.reader()
ColumnReader	ArrayReaderImpl.ArrayObjectReader.reader()
ColumnReader	UnionReaderImpl.UnionObjectReader.reader()

Uses of ColumnReader in org.apache.drill.exec.vector.accessor.writer

Methods in org.apache.drill.exec.vector.accessor.writer with parameters of type ColumnReader

Modifier and Type	Method and Description
void	AbstractObjectWriter.copy(ColumnReader from)
void	BitColumnWriter.copy(ColumnReader from)
void	MapWriter.DummyMapWriter.copy(ColumnReader from)
void	MapWriter.DummyArrayMapWriter.copy(ColumnReader from)
void	NullableScalarWriter.copy(ColumnReader from)
void	OffsetVectorWriterImpl.copy(ColumnReader from)
void	UnionWriterImpl.copy(ColumnReader from)
void	AbstractArrayWriter.copy(ColumnReader from)
void	AbstractTupleWriter.copy(ColumnReader from)

Uses of ColumnReader in org.apache.drill.exec.vector.accessor.writer.dummy

Methods in org.apache.drill.exec.vector.accessor.writer.dummy with parameters of type ColumnReader

Modifier and Type	Method and Description
void	DummyArrayWriter.copy(ColumnReader from)
void	DummyScalarWriter.copy(ColumnReader from)