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

Packages that use WriterPosition

Package	Description
org.apache.drill.exec.physical.resultSet.impl	Handles the details of the result set loader implementation.
org.apache.drill.exec.physical.rowSet	Provides a set of tools to work with row sets.
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 WriterPosition in org.apache.drill.exec.physical.resultSet.impl

Classes in org.apache.drill.exec.physical.resultSet.impl that implement WriterPosition

Modifier and Type	Class and Description
class	RowSetLoaderImpl Implementation of the row set loader.

Constructors in org.apache.drill.exec.physical.resultSet.impl with parameters of type WriterPosition

Constructor and Description
OffsetVectorState(WriterEvents writer, ValueVector mainVector, WriterPosition childWriter)

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

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

Modifier and Type	Class and Description
class	RowSetWriterImpl Implementation of a row set writer.
class	TestDummyWriter.RootWriterFixture Test only, bare-bones tuple writer used to gather the dummy column writers.

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

Subinterfaces of WriterPosition in org.apache.drill.exec.vector.accessor.writer

Modifier and Type	Interface and Description
interface	OffsetVectorWriter Interface for specialized operations on an offset vector.
static interface	UnionWriterImpl.UnionShim
interface	WriterEvents Internal interface used to control the behavior of writers.

Classes in org.apache.drill.exec.vector.accessor.writer that implement WriterPosition

Modifier and Type	Class and Description
class	AbstractArrayWriter Writer for an array-valued column.
static class	AbstractArrayWriter.BaseArrayWriter
class	AbstractFixedWidthWriter Base class for writers for fixed-width vectors.
static class	AbstractFixedWidthWriter.BaseFixedWidthWriter
static class	AbstractFixedWidthWriter.BaseIntWriter Base class for writers that use the Java int type as their native type.
class	AbstractScalarWriterImpl Column writer implementation that acts as the basis for the generated, vector-specific implementations.
class	AbstractTupleWriter Implementation for a writer for a tuple (a row or a map.) Provides access to each column using either a name or a numeric index.
class	BaseScalarWriter Column writer implementation that acts as the basis for the generated, vector-specific implementations.
class	BaseVarWidthWriter Base class for variable-width (VarChar, VarBinary, etc.) writers.
class	BitColumnWriter Specialized writer for bit columns.
class	DictEntryWriter Writer for a Dict entry.
class	EmptyListShim Internal implementation for a list of (possible) variants when the list has no type associated with it at all.
class	ListWriterImpl List writer, which is basically an array writer, with the addition that each list element can be null.
class	MapWriter Writer for a Drill Map type.
protected static class	MapWriter.ArrayMapWriter Writer for a an array of maps.
protected static class	MapWriter.DummyArrayMapWriter
protected static class	MapWriter.DummyMapWriter
protected static class	MapWriter.SingleMapWriter Writer for a single (non-array) map.
class	NullableScalarWriter
class	ObjectArrayWriter Writer for an array of either a map or another array.
class	ObjectDictWriter The implementation represents the writer as an array writer with special dict entry writer as its element writer.
class	OffsetVectorWriterImpl Specialized column writer for the (hidden) offset vector used with variable-length or repeated vectors.
class	RepeatedListWriter Implements a writer for a repeated list.
class	ScalarArrayWriter Writer for a column that holds an array of scalars.
class	SimpleListShim Shim for a list that holds a single type, but may eventually become a list of variants.
class	UnionVectorShim Lists can operate in three modes: no type, one type or many types (that is, a list of unions.) This shim implements the variant writer when the backing vector is a union or a list backed by a union.
class	UnionWriterImpl Writer to a union vector.

Methods in org.apache.drill.exec.vector.accessor.writer that return WriterPosition

Modifier and Type	Method and Description
WriterPosition	UnionWriterImpl.elementPosition()

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

Classes in org.apache.drill.exec.vector.accessor.writer.dummy that implement WriterPosition

Modifier and Type	Class and Description
class	DummyArrayWriter Dummy scalar array writer that allows a client to write values into the array, but discards all of them.
static class	DummyArrayWriter.DummyOffsetVectorWriter
class	DummyDictWriter
class	DummyScalarWriter Represents a non-projected column.