Package org.apache.druid.frame.segment.columnar

Class FrameQueryableIndex

java.lang.Object

org.apache.druid.frame.segment.columnar.FrameQueryableIndex

All Implemented Interfaces:

Closeable, AutoCloseable, Expr.InputBindingInspector, ColumnInspector, QueryableIndex

public class FrameQueryableIndex
extends Object
implements QueryableIndex

A QueryableIndex implementation based on a single columnar Frame. There is no internal caching of columns here, so callers should generally wrap this in a ColumnCache. This class exists so ColumnarFrameCursorFactory can reuse code meant for regular segment-backed QueryableIndex. Some methods are implemented by throwing UnsupportedOperationException, wherever it is not expected that those methods are actually going to be needed.

Constructor Summary

Constructors

Constructor	Description
FrameQueryableIndex(Frame frame, RowSignature signature, List<FrameColumnReader> columnReaders)

Method Summary

Modifier and Type	Method	Description
void	close()	The close method shouldn't actually be here as this is nasty.
Indexed<String>	getAvailableDimensions()	List of dimensions, not including ColumnHolder.TIME_COLUMN_NAME.
BitmapFactory	getBitmapFactoryForDimensions()
BaseColumnHolder	getColumnHolder(String columnName)
List<String>	getColumnNames()
org.joda.time.Interval	getDataInterval()
Map<String,DimensionHandler>	getDimensionHandlers()	Map of column name to DimensionHandler, whose contents and iteration order matches QueryableIndex.getAvailableDimensions().
Metadata	getMetadata()
int	getNumRows()
List<OrderBy>	getOrdering()	Returns the ordering of rows in this index.

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.druid.segment.ColumnInspector

getType

Methods inherited from interface org.apache.druid.math.expr.Expr.InputBindingInspector

areNumeric, areNumeric, areSameTypes, areSameTypes, areScalar, areScalar, canVectorize, canVectorize

Methods inherited from interface org.apache.druid.segment.QueryableIndex

getColumnCapabilities, getProjection, getProjectionQueryableIndex

Constructor Details

FrameQueryableIndex

public FrameQueryableIndex(Frame frame,
 RowSignature signature,
 List<FrameColumnReader> columnReaders)

Method Details

getNumRows

public int getNumRows()

Specified by:

getNumRows in interface QueryableIndex

getColumnNames

public List<String> getColumnNames()

Specified by:

getColumnNames in interface QueryableIndex

getColumnHolder

@Nullable
public BaseColumnHolder getColumnHolder(String columnName)

Specified by:

getColumnHolder in interface QueryableIndex

getDataInterval

public org.joda.time.Interval getDataInterval()

Specified by:

getDataInterval in interface QueryableIndex

getAvailableDimensions

public Indexed<String> getAvailableDimensions()

Description copied from interface: QueryableIndex

List of dimensions, not including ColumnHolder.TIME_COLUMN_NAME.

Specified by:

getAvailableDimensions in interface QueryableIndex

getOrdering

public List<OrderBy> getOrdering()

Description copied from interface: QueryableIndex

Returns the ordering of rows in this index.

Specified by:

getOrdering in interface QueryableIndex

getBitmapFactoryForDimensions

public BitmapFactory getBitmapFactoryForDimensions()

Specified by:

getBitmapFactoryForDimensions in interface QueryableIndex

getMetadata

@Nullable
public Metadata getMetadata()

Specified by:

getMetadata in interface QueryableIndex

getDimensionHandlers

public Map<String,DimensionHandler> getDimensionHandlers()

Description copied from interface: QueryableIndex

Map of column name to DimensionHandler, whose contents and iteration order matches QueryableIndex.getAvailableDimensions().

Specified by:

getDimensionHandlers in interface QueryableIndex

close

public void close()

Description copied from interface: QueryableIndex

The close method shouldn't actually be here as this is nasty. We will adjust it in the future.

Specified by:

close in interface AutoCloseable

Specified by:

close in interface Closeable

Specified by:

close in interface QueryableIndex