Uses of Package
org.apache.drill.exec.vector.accessor.reader

Packages that use org.apache.drill.exec.vector.accessor.reader

Package	Description
org.apache.drill.exec.physical.resultSet.model	The "row set model" provides a "dual" of the vector structure used to create, allocate and work with a collection of vectors.
org.apache.drill.exec.physical.resultSet.model.hyper	Implementation of a row set model for hyper-batches.
org.apache.drill.exec.physical.resultSet.model.single	This set of classes models the structure of a batch consisting of single vectors (as contrasted with a hyper batch.) Provides tools or metdata-based construction, allocation, reading and writing of the vectors.
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.

Classes in org.apache.drill.exec.vector.accessor.reader used by org.apache.drill.exec.physical.resultSet.model

Class and Description
AbstractObjectReader
VectorAccessor

Classes in org.apache.drill.exec.vector.accessor.reader used by org.apache.drill.exec.physical.resultSet.model.hyper

Class and Description
AbstractObjectReader
VectorAccessor
VectorAccessors.BaseHyperVectorAccessor Vector accessor used by the column accessors to obtain the vector for each column value.

Classes in org.apache.drill.exec.vector.accessor.reader used by org.apache.drill.exec.physical.resultSet.model.single

Class and Description
AbstractObjectReader

Classes in org.apache.drill.exec.vector.accessor.reader used by org.apache.drill.exec.physical.rowSet

Class and Description
AbstractObjectReader
AbstractTupleReader Reader for a tuple (a row or a map.) Provides access to each column using either a name or a numeric index.
ReaderEvents Internal operations to wire up a set of readers.

Classes in org.apache.drill.exec.vector.accessor.reader used by org.apache.drill.exec.vector.accessor

Class and Description
AbstractScalarReader
BaseScalarReader Column reader implementation that acts as the basis for the generated, vector-specific implementations.
BaseScalarReader.BaseFixedWidthReader
BaseScalarReader.BaseVarWidthReader
ReaderEvents Internal operations to wire up a set of readers.
VectorAccessor

Classes in org.apache.drill.exec.vector.accessor.reader used by org.apache.drill.exec.vector.accessor.reader

Class and Description
AbstractObjectReader
AbstractScalarReader
AbstractScalarReader.ScalarObjectReader
AbstractTupleReader Reader for a tuple (a row or a map.) Provides access to each column using either a name or a numeric index.
AbstractTupleReader.TupleObjectReader
ArrayReaderImpl Reader for an array-valued column.
ArrayReaderImpl.ArrayObjectReader Object representation of an array reader.
ArrayReaderImpl.ElementReaderIndex Index into the vector of elements for a repeated vector.
BaseScalarReader Column reader implementation that acts as the basis for the generated, vector-specific implementations.
BaseScalarReader.BaseFixedWidthReader
BaseScalarReader.BufferAccessor Provide access to the DrillBuf for the data vector.
DictReaderImpl
DictReaderImpl.DictObjectReader
NullStateReader Internal mechanism to detect if a value is null.
NullStateReaders.RequiredStateReader Dummy implementation of a null state reader for cases in which the value is never null.
OffsetVectorReader Reader for an offset vector.
ReaderEvents Internal operations to wire up a set of readers.
UnionReaderImpl Reader for a union vector.
VectorAccessor
VectorAccessors.BaseHyperVectorAccessor Vector accessor used by the column accessors to obtain the vector for each column value.