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

Class NullStateReaders.ComplexMemberStateReader

java.lang.Object

org.apache.drill.exec.vector.accessor.reader.NullStateReaders.ComplexMemberStateReader

All Implemented Interfaces:

NullStateReader

Enclosing class:

NullStateReaders

protected static class NullStateReaders.ComplexMemberStateReader
extends Object
implements NullStateReader

Handle the awkward situation with complex types. They don't carry their own bits (null state) vector. Instead, we define them as null if the type of the union is other than the type of the map or list. (Since the same vector that holds state also holds the is-null value, this check includes the check if the entire union is null.)

Constructor Summary

Constructors

Constructor	Description
ComplexMemberStateReader(ColumnAccessors.UInt1ColumnReader typeReader, TypeProtos.MinorType type)

Method Summary

Modifier and Type	Method	Description
void	bindBuffer()
void	bindIndex(ColumnReaderIndex rowIndex)
boolean	isNull()

Methods inherited from class java.lang.Object

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

Constructor Details

ComplexMemberStateReader

public ComplexMemberStateReader(ColumnAccessors.UInt1ColumnReader typeReader,
 TypeProtos.MinorType type)

Method Details

bindIndex

public void bindIndex(ColumnReaderIndex rowIndex)

Specified by:

bindIndex in interface NullStateReader

isNull

public boolean isNull()

Specified by:

isNull in interface NullStateReader

bindBuffer

public void bindBuffer()

Specified by:

bindBuffer in interface NullStateReader