io.druid.query.lookup

Class MapLookupExtractorFactory

java.lang.Object

io.druid.query.lookup.MapLookupExtractorFactory

All Implemented Interfaces:

com.google.common.base.Supplier<LookupExtractor>, LookupExtractorFactory

public class MapLookupExtractorFactory
extends Object
implements LookupExtractorFactory

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	MapLookupExtractorFactory.MapLookupIntrospectionHandler

Constructor Summary

Constructors

Constructor and Description
MapLookupExtractorFactory(Map<String,String> map, boolean isOneToOne)

Method Summary

Modifier and Type	Method and Description
boolean	close() This method will be called to stop the LookupExtractor upon deletion.
boolean	equals(Object o)
LookupExtractor	get()
LookupIntrospectHandler	getIntrospectHandler()
int	hashCode()
boolean	replaces(LookupExtractorFactory other) For MapLookups, the replaces consideration is very easy, it simply considers if the other is the same as this one
boolean	start() This method will be called to start the LookupExtractor upon registered Calling start multiple times should return true if successfully started.

Methods inherited from class java.lang.Object

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

Constructor Detail

MapLookupExtractorFactory

public MapLookupExtractorFactory(Map<String,String> map,
                                 boolean isOneToOne)

Method Detail

start

public boolean start()

Description copied from interface: LookupExtractorFactory

This method will be called to start the LookupExtractor upon registered Calling start multiple times should return true if successfully started.

Specified by:

start in interface LookupExtractorFactory

Returns:

Returns false if is not successfully started the LookupExtractor otherwise returns true.

close

public boolean close()

Description copied from interface: LookupExtractorFactory

This method will be called to stop the LookupExtractor upon deletion. Calling this method multiple times should always return true if successfully closed.

Specified by:

close in interface LookupExtractorFactory

Returns:

Returns false if not successfully closed the LookupExtractor otherwise returns true

replaces

public boolean replaces(@Nullable
                        LookupExtractorFactory other)

For MapLookups, the replaces consideration is very easy, it simply considers if the other is the same as this one

Specified by:

replaces in interface LookupExtractorFactory

Parameters:

other - Some other LookupExtractorFactory which might need replaced

Returns:

true - should replace, false - should not replace

getIntrospectHandler

@Nullable
public LookupIntrospectHandler getIntrospectHandler()

Specified by:

getIntrospectHandler in interface LookupExtractorFactory

Returns:

Returns the actual introspection request handler, can return null if it is not supported. This will be called once per HTTP request to introspect the actual lookup.

get

public LookupExtractor get()

Specified by:

get in interface com.google.common.base.Supplier<LookupExtractor>

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object