Package org.apache.drill.exec.physical.impl.protocol

package org.apache.drill.exec.physical.impl.protocol

Defines a revised implementation of the Drill RecordBatch protocol. This version separates concerns into specific classes, and creates as single "shim" class to implement the iterator protocol, deferring to specific classes as needed.

This version is an eventual successor to the original implementation which used the "kitchen sink" pattern to combine all functionality into s single, large record batch implementation.

Related Packages

Package	Description
org.apache.drill.exec.physical.impl

Class	Description
BatchAccessor	Provides access to the row set (record batch) produced by an operator.
IndirectContainerAccessor	Extension of the container accessor that holds an optional selection vector, presenting the batch row count as the selection vector count.
OperatorDriver	State machine that drives the operator executable.
OperatorDriver.State
OperatorExec	Core protocol for a Drill operator execution.
OperatorRecordBatch	Modular implementation of the standard Drill record batch iterator protocol.
SchemaTracker	Tracks changes to schemas via "snapshots" over time.
VectorContainerAccessor	Wraps a vector container and optional selection vector in an interface simpler than the entire RecordBatch.