org.apache.calcite.util

Class CompositeMap<K,V>

java.lang.Object

org.apache.calcite.util.CompositeMap<K,V>

Type Parameters:

K - Key type

V - Value type

All Implemented Interfaces:

Map<K,V>

public class CompositeMap<K,V>
extends Object
implements Map<K,V>

Unmodifiable view onto multiple backing maps. An element occurs in the map if it occurs in any of the backing maps; the value is the value that occurs in the first map that contains the key.

Nested Class Summary

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

Map.Entry<K,V>

Constructor Summary

Constructors

Constructor and Description
CompositeMap(com.google.common.collect.ImmutableList<Map<K,V>> maps)

Method Summary

Modifier and Type	Method and Description
void	clear()
boolean	containsKey(@Nullable Object key)
boolean	containsValue(@Nullable Object value)
Set<Map.Entry<K,V>>	entrySet()
V	get(@Nullable Object key)
boolean	isEmpty()
Set<K>	keySet()
static <K,V> CompositeMap<K,V>	of(Map<K,V> map0, Map<K,V>... maps) Creates a CompositeMap.
V	put(K key, V value)
void	putAll(Map<? extends K,? extends V> m)
V	remove(@Nullable Object key)
int	size()
Collection<V>	values()

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Map

compute, computeIfAbsent, computeIfPresent, equals, forEach, getOrDefault, hashCode, merge, putIfAbsent, remove, replace, replace, replaceAll

Constructor Detail

CompositeMap

public CompositeMap(com.google.common.collect.ImmutableList<Map<K,V>> maps)

Method Detail

of

@SafeVarargs
public static <K,V> CompositeMap<K,V> of(Map<K,V> map0,
                                                      Map<K,V>... maps)

Creates a CompositeMap.

size

public int size()

Specified by:

size in interface Map<K,V>

isEmpty

public boolean isEmpty()

Specified by:

isEmpty in interface Map<K,V>

containsKey

public boolean containsKey(@Nullable Object key)

Specified by:

containsKey in interface Map<K,V>

containsValue

public boolean containsValue(@Nullable Object value)

Specified by:

containsValue in interface Map<K,V>

get

public V get(@Nullable Object key)

Specified by:

get in interface Map<K,V>

put

public V put(K key,
             V value)

Specified by:

put in interface Map<K,V>

remove

public V remove(@Nullable Object key)

Specified by:

remove in interface Map<K,V>

putAll

public void putAll(Map<? extends K,? extends V> m)

Specified by:

putAll in interface Map<K,V>

clear

public void clear()

Specified by:

clear in interface Map<K,V>

keySet

public Set<K> keySet()

Specified by:

keySet in interface Map<K,V>

values

public Collection<V> values()

Specified by:

values in interface Map<K,V>

entrySet

public Set<Map.Entry<K,V>> entrySet()

Specified by:

entrySet in interface Map<K,V>