Package org.apache.druid.segment.column

Class StringEncodingStrategies.Utf8ToStringIndexed

java.lang.Object

org.apache.druid.segment.column.StringEncodingStrategies.Utf8ToStringIndexed

All Implemented Interfaces:

Iterable<String>, HotLoopCallee, Indexed<String>

Enclosing class:

StringEncodingStrategies

public static final class StringEncodingStrategies.Utf8ToStringIndexed
extends Object
implements Indexed<String>

Adapter to convert Indexed with utf8 encoded bytes into Indexed to be friendly to consumers.

Constructor Summary

Constructors

Constructor	Description
Utf8ToStringIndexed(Indexed<ByteBuffer> delegate)

Method Summary

Modifier and Type	Method	Description
String	get(int index)	Get the value at specified position
int	indexOf(String value)	Returns the index of "value" in this Indexed object, or a negative number if the value is not present.
void	inspectRuntimeShape(RuntimeShapeInspector inspector)	Implementations of this method should call inspector.visit() with all fields of this class, which meet two conditions: 1.
Iterator<String>	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.segment.data.Indexed

isSorted

Methods inherited from interface java.lang.Iterable

forEach, spliterator

Constructor Detail

Utf8ToStringIndexed

public Utf8ToStringIndexed(Indexed<ByteBuffer> delegate)

Method Detail

size

public int size()

Description copied from interface: Indexed

Number of elements in the value set

Specified by:

size in interface Indexed<String>

get

@Nullable
public String get(int index)

Description copied from interface: Indexed

Get the value at specified position

Specified by:

get in interface Indexed<String>

indexOf

public int indexOf(@Nullable
                   String 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<String>

Parameters:

value - value to search for

Returns:

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

iterator

public Iterator<String> iterator()

Specified by:

iterator in interface Iterable<String>

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.

Specified by:

inspectRuntimeShape in interface HotLoopCallee