org.apache.drill.exec.physical.resultSet.model.single

Class VectorAllocator

java.lang.Object

org.apache.drill.exec.physical.resultSet.model.single.VectorAllocator

public class VectorAllocator
extends Object

Given a vector container, and a metadata schema that matches the container, walk the schema tree to allocate new vectors according to a given row count and the size information provided in column metadata.

AllocationHelper - the class which this one replaces VectorInitializer - an earlier cut at implementation based on data from the RecordBatchSizer

Constructor Summary

Constructors

Constructor and Description
VectorAllocator(VectorContainer container)

Method Summary

Modifier and Type	Method and Description
void	allocate(int rowCount)
void	allocate(int rowCount, MetadataProvider mdProvider)
void	allocate(int rowCount, TupleMetadata schema)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

VectorAllocator

public VectorAllocator(VectorContainer container)

Method Detail

allocate

public void allocate(int rowCount)

allocate

public void allocate(int rowCount,
                     TupleMetadata schema)

allocate

public void allocate(int rowCount,
                     MetadataProvider mdProvider)