Package org.apache.drill.exec.physical.resultSet.model.hyper

package org.apache.drill.exec.physical.resultSet.model.hyper

Implementation of a row set model for hyper-batches. A hyper batch is one that contains a list of batches. The batch is logically comprised of "hyper-vectors" which are the individual vectors from each batch stacked "end-to-end."

Hyper batches allow only reading. So, the only services here are to parse a hyper-container into a row set model, then use that model to create a matching set of readers.

Related Packages

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.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.

Classes

Class	Description
HyperReaderBuilder	Base reader builder for a hyper-batch.
HyperReaderBuilder.HyperVectorAccessor	Vector accessor used by the column accessors to obtain the vector for each column value.
HyperSchemaInference	Infer the schema for a hyperbatch.