com.google.maps.android.data.geojson

Class BiMultiMap<K>

java.lang.Object

java.util.AbstractMap<K,V>

java.util.HashMap<K,java.lang.Object>

com.google.maps.android.data.geojson.BiMultiMap<K>

All Implemented Interfaces:

java.io.Serializable, java.lang.Cloneable, java.util.Map<K,java.lang.Object>

public class BiMultiMap<K>
extends java.util.HashMap<K,java.lang.Object>

Extension of HashMap that provides two main features. Firstly it allows reverse lookup for a key given a value, by storing a second HashMap internally which maps values to keys. Secondly, it supports Collection values, in which case, each item in the collection is used as a key in the internal reverse HashMap. It's therefore up to the caller to ensure the overall set of values, and collection values, are unique.

Used by GeoJsonRenderer to store GeoJsonFeature instances mapped to corresponding Marker, Polyline, and Polygon map objects. We want to look these up in reverse to provide access to GeoJsonFeature instances when map objects are clicked.

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class java.util.AbstractMap

java.util.AbstractMap.SimpleEntry<K,V>, java.util.AbstractMap.SimpleImmutableEntry<K,V>

Nested classes/interfaces inherited from interface java.util.Map

java.util.Map.Entry<K,V>

Constructor Summary

Constructors

Constructor and Description
BiMultiMap()

Method Summary

Modifier and Type	Method and Description
void	clear()
BiMultiMap<K>	clone()
K	getKey(java.lang.Object value) Reverse lookup of key by value.
java.lang.Object	put(K key, java.util.Collection values)
java.lang.Object	put(K key, java.lang.Object value)
void	putAll(java.util.Map<? extends K,?> map)
java.lang.Object	remove(java.lang.Object key)

Methods inherited from class java.util.HashMap

compute, computeIfAbsent, computeIfPresent, containsKey, containsValue, entrySet, forEach, get, getOrDefault, isEmpty, keySet, merge, putIfAbsent, remove, replace, replace, replaceAll, size, values

Methods inherited from class java.util.AbstractMap

equals, hashCode, toString

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.util.Map

equals, hashCode

Constructor Detail

BiMultiMap

public BiMultiMap()

Method Detail

putAll

public void putAll(java.util.Map<? extends K,?> map)

Specified by:

putAll in interface java.util.Map<K,java.lang.Object>

Overrides:

putAll in class java.util.HashMap<K,java.lang.Object>

put

public java.lang.Object put(K key,
                            java.lang.Object value)

Specified by:

put in interface java.util.Map<K,java.lang.Object>

Overrides:

put in class java.util.HashMap<K,java.lang.Object>

put

public java.lang.Object put(K key,
                            java.util.Collection values)

remove

public java.lang.Object remove(java.lang.Object key)

Specified by:

remove in interface java.util.Map<K,java.lang.Object>

Overrides:

remove in class java.util.HashMap<K,java.lang.Object>

clear

public void clear()

Specified by:

clear in interface java.util.Map<K,java.lang.Object>

Overrides:

clear in class java.util.HashMap<K,java.lang.Object>

clone

public BiMultiMap<K> clone()

Overrides:

clone in class java.util.HashMap<K,java.lang.Object>

getKey

public K getKey(java.lang.Object value)

Reverse lookup of key by value.

Parameters:

value - Value to lookup

Returns:

Key for the given value