org.apache.drill.exec.physical.rowSet

Class AbstractSingleRowSet

java.lang.Object

org.apache.drill.exec.physical.rowSet.AbstractRowSet

org.apache.drill.exec.physical.rowSet.AbstractSingleRowSet

All Implemented Interfaces:

RowSet, RowSet.SingleRowSet

Direct Known Subclasses:

DirectRowSet, IndirectRowSet

public abstract class AbstractSingleRowSet
extends AbstractRowSet
implements RowSet.SingleRowSet

Base class for row sets backed by a single record batch.

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.drill.exec.physical.rowSet.RowSet

RowSet.ExtendableRowSet, RowSet.HyperRowSet, RowSet.HyperRowSetBuilder, RowSet.SingleRowSet

Field Summary

Fields inherited from class org.apache.drill.exec.physical.rowSet.AbstractRowSet

container, schema

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	AbstractSingleRowSet(AbstractSingleRowSet rowSet)
protected	AbstractSingleRowSet(VectorContainer container, TupleMetadata schema)

Method Summary

Modifier and Type	Method and Description
protected RowSetReader	buildReader(ReaderIndex rowIndex) Internal method to build the set of column readers needed for this row set.
long	size() Return the size in memory of this record set, including indirection vectors, null vectors, offset vectors and the entire (used and unused) data vectors.

Methods inherited from class org.apache.drill.exec.physical.rowSet.AbstractRowSet

allocator, batchSchema, clear, container, print, rowCount, schema, toString, vectorAccessible

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.drill.exec.physical.rowSet.RowSet.SingleRowSet

getSv2, toIndirect, toIndirect

Methods inherited from interface org.apache.drill.exec.physical.rowSet.RowSet

allocator, batchSchema, clear, container, indirectionType, isExtendable, isWritable, print, reader, rowCount, schema, vectorAccessible

Constructor Detail

AbstractSingleRowSet

protected AbstractSingleRowSet(AbstractSingleRowSet rowSet)

AbstractSingleRowSet

protected AbstractSingleRowSet(VectorContainer container,
                               TupleMetadata schema)

Method Detail

size

public long size()

Description copied from interface: RowSet

Return the size in memory of this record set, including indirection vectors, null vectors, offset vectors and the entire (used and unused) data vectors.

Specified by:

size in interface RowSet

Overrides:

size in class AbstractRowSet

Returns:

memory size in bytes

buildReader

protected RowSetReader buildReader(ReaderIndex rowIndex)

Internal method to build the set of column readers needed for this row set. Used when building a row set reader.

Parameters:

rowIndex - object that points to the current row

Returns:

an array of column readers: in the same order as the (non-map) vectors.