Class ImmutableMultimap<K,​V>

    • Method Detail

      • of

        public static <K,​V> ImmutableMultimap<K,​V> of()
        Returns an empty multimap.
      • of

        public static <K,​V> ImmutableMultimap<K,​V> of​(K k1,
                                                                  V v1)
        Returns an immutable multimap containing a single entry.
      • of

        public static <K,​V> ImmutableMultimap<K,​V> of​(K k1,
                                                                  V v1,
                                                                  K k2,
                                                                  V v2)
        Returns an immutable multimap containing the given entries, in order.
      • of

        public static <K,​V> ImmutableMultimap<K,​V> of​(K k1,
                                                                  V v1,
                                                                  K k2,
                                                                  V v2,
                                                                  K k3,
                                                                  V v3)
        Returns an immutable multimap containing the given entries, in the "key-grouped" insertion order described in the class documentation.
      • of

        public static <K,​V> ImmutableMultimap<K,​V> of​(K k1,
                                                                  V v1,
                                                                  K k2,
                                                                  V v2,
                                                                  K k3,
                                                                  V v3,
                                                                  K k4,
                                                                  V v4)
        Returns an immutable multimap containing the given entries, in the "key-grouped" insertion order described in the class documentation.
      • of

        public static <K,​V> ImmutableMultimap<K,​V> of​(K k1,
                                                                  V v1,
                                                                  K k2,
                                                                  V v2,
                                                                  K k3,
                                                                  V v3,
                                                                  K k4,
                                                                  V v4,
                                                                  K k5,
                                                                  V v5)
        Returns an immutable multimap containing the given entries, in the "key-grouped" insertion order described in the class documentation.
      • copyOf

        public static <K,​V> ImmutableMultimap<K,​V> copyOf​(Multimap<? extends K,​? extends V> multimap)
        Returns an immutable multimap containing the same mappings as multimap, in the "key-grouped" iteration order described in the class documentation.

        Despite the method name, this method attempts to avoid actually copying the data when it is safe to do so. The exact circumstances under which a copy will or will not be performed are undocumented and subject to change.

        Throws:
        java.lang.NullPointerException - if any key or value in multimap is null
      • copyOf

        @Beta
        public static <K,​V> ImmutableMultimap<K,​V> copyOf​(java.lang.Iterable<? extends java.util.Map.Entry<? extends K,​? extends V>> entries)
        Returns an immutable multimap containing the specified entries. The returned multimap iterates over keys in the order they were first encountered in the input, and the values for each key are iterated in the order they were encountered.
        Throws:
        java.lang.NullPointerException - if any key, value, or entry is null
        Since:
        19.0
      • removeAll

        @Deprecated
        public ImmutableCollection<V> removeAll​(java.lang.Object key)
        Deprecated.
        Unsupported operation.
        Guaranteed to throw an exception and leave the multimap unmodified.
        Specified by:
        removeAll in interface Multimap<K,​V>
        Returns:
        the values that were removed (possibly empty). The returned collection may be modifiable, but updating it will have no effect on the multimap.
        Throws:
        java.lang.UnsupportedOperationException - always
      • replaceValues

        @Deprecated
        public ImmutableCollection<V> replaceValues​(K key,
                                                    java.lang.Iterable<? extends V> values)
        Deprecated.
        Unsupported operation.
        Guaranteed to throw an exception and leave the multimap unmodified.
        Specified by:
        replaceValues in interface Multimap<K,​V>
        Overrides:
        replaceValues in class AbstractMultimap<K,​V>
        Returns:
        the collection of replaced values, or an empty collection if no values were previously associated with the key. The collection may be modifiable, but updating it will have no effect on the multimap.
        Throws:
        java.lang.UnsupportedOperationException - always
      • clear

        @Deprecated
        public void clear()
        Deprecated.
        Unsupported operation.
        Guaranteed to throw an exception and leave the multimap unmodified.
        Specified by:
        clear in interface Multimap<K,​V>
        Throws:
        java.lang.UnsupportedOperationException - always
      • get

        public abstract ImmutableCollection<V> get​(K key)
        Returns an immutable collection of the values for the given key. If no mappings in the multimap have the provided key, an empty immutable collection is returned. The values are in the same order as the parameters used to build this multimap.
        Specified by:
        get in interface Multimap<K,​V>
      • inverse

        public abstract ImmutableMultimap<V,​K> inverse()
        Returns an immutable multimap which is the inverse of this one. For every key-value mapping in the original, the result will have a mapping with key and value reversed.
        Since:
        11.0
      • put

        @Deprecated
        public boolean put​(K key,
                           V value)
        Deprecated.
        Unsupported operation.
        Guaranteed to throw an exception and leave the multimap unmodified.
        Specified by:
        put in interface Multimap<K,​V>
        Overrides:
        put in class AbstractMultimap<K,​V>
        Returns:
        true if the method increased the size of the multimap, or false if the multimap already contained the key-value pair and doesn't allow duplicates
        Throws:
        java.lang.UnsupportedOperationException - always
      • putAll

        @Deprecated
        public boolean putAll​(K key,
                              java.lang.Iterable<? extends V> values)
        Deprecated.
        Unsupported operation.
        Guaranteed to throw an exception and leave the multimap unmodified.
        Specified by:
        putAll in interface Multimap<K,​V>
        Overrides:
        putAll in class AbstractMultimap<K,​V>
        Returns:
        true if the multimap changed
        Throws:
        java.lang.UnsupportedOperationException - always
      • putAll

        @Deprecated
        public boolean putAll​(Multimap<? extends K,​? extends V> multimap)
        Deprecated.
        Unsupported operation.
        Guaranteed to throw an exception and leave the multimap unmodified.
        Specified by:
        putAll in interface Multimap<K,​V>
        Overrides:
        putAll in class AbstractMultimap<K,​V>
        Returns:
        true if the multimap changed
        Throws:
        java.lang.UnsupportedOperationException - always
      • remove

        @Deprecated
        public boolean remove​(java.lang.Object key,
                              java.lang.Object value)
        Deprecated.
        Unsupported operation.
        Guaranteed to throw an exception and leave the multimap unmodified.
        Specified by:
        remove in interface Multimap<K,​V>
        Overrides:
        remove in class AbstractMultimap<K,​V>
        Returns:
        true if the multimap changed
        Throws:
        java.lang.UnsupportedOperationException - always
      • isPartialView

        boolean isPartialView()
        Returns true if this immutable multimap's implementation contains references to user-created objects that aren't accessible via this multimap's methods. This is generally used to determine whether copyOf implementations should make an explicit copy to avoid memory leaks.
      • containsKey

        public boolean containsKey​(java.lang.Object key)
        Description copied from interface: Multimap
        Returns true if this multimap contains at least one key-value pair with the key key.
        Specified by:
        containsKey in interface Multimap<K,​V>
      • containsValue

        public boolean containsValue​(java.lang.Object value)
        Description copied from interface: Multimap
        Returns true if this multimap contains at least one key-value pair with the value value.
        Specified by:
        containsValue in interface Multimap<K,​V>
        Overrides:
        containsValue in class AbstractMultimap<K,​V>
      • size

        public int size()
        Description copied from interface: Multimap
        Returns the number of key-value pairs in this multimap.

        Note: this method does not return the number of distinct keys in the multimap, which is given by keySet().size() or asMap().size(). See the opening section of the Multimap class documentation for clarification.

        Specified by:
        size in interface Multimap<K,​V>
      • asMap

        public ImmutableMap<K,​java.util.Collection<V>> asMap()
        Returns an immutable map that associates each key with its corresponding values in the multimap. Keys and values appear in the same order as in this multimap.
        Specified by:
        asMap in interface Multimap<K,​V>
        Overrides:
        asMap in class AbstractMultimap<K,​V>
      • forEach

        public void forEach​(java.util.function.BiConsumer<? super K,​? super V> action)
        Description copied from interface: Multimap
        Performs the given action for all key-value pairs contained in this multimap. If an ordering is specified by the Multimap implementation, actions will be performed in the order of iteration of Multimap.entries(). Exceptions thrown by the action are relayed to the caller.

        To loop over all keys and their associated value collections, write Multimaps.asMap(multimap).forEach((key, valueCollection) -> action()).

        Specified by:
        forEach in interface Multimap<K,​V>
      • keys

        public ImmutableMultiset<K> keys()
        Returns an immutable multiset containing all the keys in this multimap, in the same order and with the same frequencies as they appear in this multimap; to get only a single occurrence of each key, use keySet().
        Specified by:
        keys in interface Multimap<K,​V>
        Overrides:
        keys in class AbstractMultimap<K,​V>
      • values

        public ImmutableCollection<V> values()
        Returns an immutable collection of the values in this multimap. Its iterator traverses the values for the first key, the values for the second key, and so on.
        Specified by:
        values in interface Multimap<K,​V>
        Overrides:
        values in class AbstractMultimap<K,​V>