io.druid.query.extraction

Class MapLookupExtractor

java.lang.Object

io.druid.query.extraction.MapLookupExtractor

All Implemented Interfaces:

LookupExtractor

public class MapLookupExtractor
extends Object
implements LookupExtractor

Constructor Summary

Constructors

Constructor and Description
MapLookupExtractor(Map<String,String> map)

Method Summary

Methods

Modifier and Type	Method and Description
String	apply(String val) Apply a particular lookup methodology to the input string
byte[]	getCacheKey() Create a cache key for use in results caching
Map<String,String>	getMap()

Methods inherited from class java.lang.Object

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

Constructor Detail

MapLookupExtractor

public MapLookupExtractor(Map<String,String> map)

Method Detail

getMap

public Map<String,String> getMap()

apply

@Nullable
public String apply(@NotNull
                    String val)

Description copied from interface: LookupExtractor

Apply a particular lookup methodology to the input string

Specified by:

apply in interface LookupExtractor

Parameters:

val - The value to apply the lookup to. May not be null

Returns:

The lookup, or null key cannot have the lookup applied to it and should be treated as missing.

getCacheKey

public byte[] getCacheKey()

Description copied from interface: LookupExtractor

Create a cache key for use in results caching

Specified by:

getCacheKey in interface LookupExtractor

Returns:

A byte array that can be used to uniquely identify if results of a prior lookup can use the cached values