Package org.apache.druid.segment.data

Class GenericIndexed.BufferIndexed

java.lang.Object

org.apache.druid.segment.data.GenericIndexed.BufferIndexed

All Implemented Interfaces:

Iterable<T>, HotLoopCallee, Indexed<T>

Enclosing class:

GenericIndexed<T>

public abstract class GenericIndexed.BufferIndexed
extends Object
implements Indexed<T>

Single-threaded view.

Constructor Summary

Constructors

Constructor	Description
BufferIndexed()

Method Summary

Modifier and Type	Method	Description
T	get(int index)	Get the value at specified position
protected abstract ByteBuffer	getByteBuffer(int index)	Like get(int), but returns a ByteBuffer instead of using the ObjectStrategy.
int	indexOf(T value)	Returns the index of "value" in this Indexed object, or a negative number if the value is not present.
boolean	isSorted()	Indicates if this value set is sorted, the implication being that the contract of Indexed.indexOf(T) is strenthened to return a negative number equal to (-(insertion point) - 1) when the value is not present in the set.
Iterator<T>	iterator()
int	size()	Number of elements in the value set

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.query.monomorphicprocessing.HotLoopCallee

inspectRuntimeShape

Methods inherited from interface java.lang.Iterable

forEach, spliterator

Constructor Detail

BufferIndexed

public BufferIndexed()

Method Detail

size

public int size()

Description copied from interface: Indexed

Number of elements in the value set

Specified by:

size in interface Indexed<T>

get

public T get(int index)

Description copied from interface: Indexed

Get the value at specified position

Specified by:

get in interface Indexed<T>

getByteBuffer

@Nullable
protected abstract ByteBuffer getByteBuffer(int index)

Like get(int), but returns a ByteBuffer instead of using the ObjectStrategy. The returned ByteBuffer is reused by future calls. Callers must discard it before calling another method on this BufferedIndexed object that may want to reuse the buffer.

indexOf

public int indexOf(@Nullable
                   T value)

Description copied from interface: Indexed

Returns the index of "value" in this Indexed object, or a negative number if the value is not present. The negative number is not guaranteed to be any particular number unless Indexed.isSorted() returns true, in which case it will be a negative number equal to (-(insertion point) - 1), in the manner of Arrays.binarySearch.

Specified by:

indexOf in interface Indexed<T>

Parameters:

value - value to search for

Returns:

index of value, or a negative number (equal to (-(insertion point) - 1) if Indexed.isSorted())

isSorted

public boolean isSorted()

Description copied from interface: Indexed

Indicates if this value set is sorted, the implication being that the contract of Indexed.indexOf(T) is strenthened to return a negative number equal to (-(insertion point) - 1) when the value is not present in the set.

Specified by:

isSorted in interface Indexed<T>

iterator

public Iterator<T> iterator()

Specified by:

iterator in interface Iterable<T>