org.apache.drill.exec.physical.resultSet

Interface ResultVectorCache

All Known Implementing Classes:

NullResultVectorCacheImpl, ResultVectorCacheImpl

public interface ResultVectorCache

Interface for a cache that implements "vector persistence" across multiple result set loaders. Allows a single scan operator to offer the same set of vectors even when data is read by a set of readers.

Method Summary

Modifier and Type	Method and Description
BufferAllocator	allocator()
ResultVectorCache	childCache(String colName)
TypeProtos.MajorType	getType(String name)
boolean	isPermissive()
ValueVector	vectorFor(MaterializedField colSchema)

Method Detail

allocator

BufferAllocator allocator()

vectorFor

ValueVector vectorFor(MaterializedField colSchema)

getType

TypeProtos.MajorType getType(String name)

isPermissive

boolean isPermissive()

childCache

ResultVectorCache childCache(String colName)