Package org.apache.druid.frame.segment

Class FrameFilteredOffset

java.lang.Object

org.apache.druid.segment.data.Offset

org.apache.druid.segment.SimpleSettableOffset

org.apache.druid.frame.segment.FrameFilteredOffset

All Implemented Interfaces:

Cloneable, HotLoopCallee, ReadableOffset

public class FrameFilteredOffset
extends SimpleSettableOffset

Copy of FilteredOffset that does not require bitmap indexes. In a future where FilteredOffset is opened up for usage outside of regular segments, this class could be removed and usages could be migrated to FilteredOffset.

Constructor Summary

Constructors

Constructor	Description
FrameFilteredOffset(SimpleSettableOffset baseOffset, ColumnSelectorFactory columnSelectorFactory, Filter postFilter)

Method Summary

Modifier and Type	Method	Description
Offset	clone()	See FilteredOffset.clone() for notes.
ReadableOffset	getBaseReadableOffset()	Returns the same offset ("this") or a readable "view" of this offset, which always returns the same value from ReadableOffset.getOffset(), as this offset.
int	getOffset()
void	increment()	Move to next offset
void	inspectRuntimeShape(RuntimeShapeInspector inspector)	Implementations of this method should call inspector.visit() with all fields of this class, which meet two conditions: 1.
void	reset()	Resets the Offset to the position it was created or cloned with.
void	setCurrentOffset(int currentOffset)
boolean	withinBounds()	Check if current offset position is within the valid range

Methods inherited from class java.lang.Object

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

Constructor Details

FrameFilteredOffset

public FrameFilteredOffset(SimpleSettableOffset baseOffset,
 ColumnSelectorFactory columnSelectorFactory,
 Filter postFilter)

Method Details

increment

public void increment()

Description copied from class: Offset

Move to next offset

Specified by:

increment in class Offset

withinBounds

public boolean withinBounds()

Description copied from class: Offset

Check if current offset position is within the valid range

Specified by:

withinBounds in class Offset

setCurrentOffset

public void setCurrentOffset(int currentOffset)

Specified by:

setCurrentOffset in class SimpleSettableOffset

reset

public void reset()

Description copied from class: Offset

Resets the Offset to the position it was created or cloned with.

Specified by:

reset in class Offset

getBaseReadableOffset

public ReadableOffset getBaseReadableOffset()

Description copied from class: Offset

Returns the same offset ("this") or a readable "view" of this offset, which always returns the same value from ReadableOffset.getOffset(), as this offset. This method is useful for "unwrapping" such offsets as FilteredOffset and reduce reference indirection, when only ReadableOffset API is needed.

Specified by:

getBaseReadableOffset in class Offset

clone

public Offset clone()

See FilteredOffset.clone() for notes.

Overrides:

clone in class Offset

getOffset

public int getOffset()

inspectRuntimeShape

public void inspectRuntimeShape(RuntimeShapeInspector inspector)

Description copied from interface: HotLoopCallee

Implementations of this method should call inspector.visit() with all fields of this class, which meet two conditions: 1. They are used in methods of this class, annotated with CalledFromHotLoop 2. They are either: a. Nullable objects b. Instances of HotLoopCallee c. Objects, which don't always have a specific class in runtime. For example, a field of type Set could be HashSet or TreeSet in runtime, depending on how this instance (the instance on which inspectRuntimeShape() is called) is configured. d. ByteBuffer or similar objects, where byte order matters e. boolean flags, affecting branch taking f. Arrays of objects, meeting any of conditions a-e.