com.google.common.collect

## Class MapConstraints

- java.lang.Object
- - com.google.common.collect.MapConstraints

- Deprecated.
  Use `Preconditions` for basic checks. In place of constrained maps, we encourage you to check your preconditions explicitly instead of leaving that work to the map implementation. For the specific case of rejecting null, consider `ImmutableMap`. This class is scheduled for removal in Guava 20.0.

      @Beta
      @GwtCompatible
      @Deprecated
      public final class MapConstraints
      extends java.lang.Object

  Factory and utilities pertaining to the `MapConstraint` interface.
  Since:
    3.0
  See Also:
    `Constraints`

- - ### Method Summary

    Methods
    Modifier and Type | Method and Description
    --- | ---
    `static <K,V> BiMap<K,V>` | `constrainedBiMap(BiMap<K,V> map, MapConstraint<? super K,? super V> constraint)` Deprecated. Returns a constrained view of the specified bimap, using the specified constraint.
    `static <K,V> ListMultimap<K,V>` | `constrainedListMultimap(ListMultimap<K,V> multimap, MapConstraint<? super K,? super V> constraint)` Deprecated. Returns a constrained view of the specified list multimap, using the specified constraint.
    `static <K,V> java.util.Map<K,V>` | `constrainedMap(java.util.Map<K,V> map, MapConstraint<? super K,? super V> constraint)` Deprecated. Returns a constrained view of the specified map, using the specified constraint.
    `static <K,V> Multimap<K,V>` | `constrainedMultimap(Multimap<K,V> multimap, MapConstraint<? super K,? super V> constraint)` Deprecated. Returns a constrained view of the specified multimap, using the specified constraint.
    `static <K,V> SetMultimap<K,V>` | `constrainedSetMultimap(SetMultimap<K,V> multimap, MapConstraint<? super K,? super V> constraint)` Deprecated. Returns a constrained view of the specified set multimap, using the specified constraint.
    `static <K,V> SortedSetMultimap<K,V>` | `constrainedSortedSetMultimap(SortedSetMultimap<K,V> multimap, MapConstraint<? super K,? super V> constraint)` Deprecated. Returns a constrained view of the specified sorted-set multimap, using the specified constraint.
    `static MapConstraint<java.lang.Object,java.lang.Object>` | `notNull()` Deprecated. Returns a constraint that verifies that neither the key nor the value is null.

    - ### Methods inherited from class java.lang.Object

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

- - ### Method Detail

    - #### notNull

          public static MapConstraint<java.lang.Object,java.lang.Object> notNull()

      Deprecated.
      Returns a constraint that verifies that neither the key nor the value is null. If either is null, a `NullPointerException` is thrown.

    - #### constrainedMap

          public static <K,V> java.util.Map<K,V> constrainedMap(java.util.Map<K,V> map,
                                                MapConstraint<? super K,? super V> constraint)

      Deprecated.
      Returns a constrained view of the specified map, using the specified constraint. Any operations that add new mappings will call the provided constraint. However, this method does not verify that existing mappings satisfy the constraint.

      The returned map is not serializable.

      Parameters:
        `map` - the map to constrain
        `constraint` - the constraint that validates added entries
      Returns:
        a constrained view of the specified map

    - #### constrainedMultimap

          public static <K,V> Multimap<K,V> constrainedMultimap(Multimap<K,V> multimap,
                                                MapConstraint<? super K,? super V> constraint)

      Deprecated.
      Returns a constrained view of the specified multimap, using the specified constraint. Any operations that add new mappings will call the provided constraint. However, this method does not verify that existing mappings satisfy the constraint.

      Note that the generated multimap's `Multimap.removeAll(java.lang.Object)` and `Multimap.replaceValues(K, java.lang.Iterable<? extends V>)` methods return collections that are not constrained.

      The returned multimap is not serializable.

      Parameters:
        `multimap` - the multimap to constrain
        `constraint` - the constraint that validates added entries
      Returns:
        a constrained view of the multimap

    - #### constrainedListMultimap

          public static <K,V> ListMultimap<K,V> constrainedListMultimap(ListMultimap<K,V> multimap,
                                                        MapConstraint<? super K,? super V> constraint)

      Deprecated.
      Returns a constrained view of the specified list multimap, using the specified constraint. Any operations that add new mappings will call the provided constraint. However, this method does not verify that existing mappings satisfy the constraint.

      Note that the generated multimap's `Multimap.removeAll(java.lang.Object)` and `Multimap.replaceValues(K, java.lang.Iterable<? extends V>)` methods return collections that are not constrained.

      The returned multimap is not serializable.

      Parameters:
        `multimap` - the multimap to constrain
        `constraint` - the constraint that validates added entries
      Returns:
        a constrained view of the specified multimap

    - #### constrainedSetMultimap

          public static <K,V> SetMultimap<K,V> constrainedSetMultimap(SetMultimap<K,V> multimap,
                                                      MapConstraint<? super K,? super V> constraint)

      Deprecated.
      Returns a constrained view of the specified set multimap, using the specified constraint. Any operations that add new mappings will call the provided constraint. However, this method does not verify that existing mappings satisfy the constraint.

      Note that the generated multimap's `Multimap.removeAll(java.lang.Object)` and `Multimap.replaceValues(K, java.lang.Iterable<? extends V>)` methods return collections that are not constrained.

      The returned multimap is not serializable.

      Parameters:
        `multimap` - the multimap to constrain
        `constraint` - the constraint that validates added entries
      Returns:
        a constrained view of the specified multimap

    - #### constrainedSortedSetMultimap

          public static <K,V> SortedSetMultimap<K,V> constrainedSortedSetMultimap(SortedSetMultimap<K,V> multimap,
                                                                  MapConstraint<? super K,? super V> constraint)

      Deprecated.
      Returns a constrained view of the specified sorted-set multimap, using the specified constraint. Any operations that add new mappings will call the provided constraint. However, this method does not verify that existing mappings satisfy the constraint.

      Note that the generated multimap's `Multimap.removeAll(java.lang.Object)` and `Multimap.replaceValues(K, java.lang.Iterable<? extends V>)` methods return collections that are not constrained.

      The returned multimap is not serializable.

      Parameters:
        `multimap` - the multimap to constrain
        `constraint` - the constraint that validates added entries
      Returns:
        a constrained view of the specified multimap

    - #### constrainedBiMap

          public static <K,V> BiMap<K,V> constrainedBiMap(BiMap<K,V> map,
                                          MapConstraint<? super K,? super V> constraint)

      Deprecated.
      Returns a constrained view of the specified bimap, using the specified constraint. Any operations that modify the bimap will have the associated keys and values verified with the constraint.

      The returned bimap is not serializable.

      Parameters:
        `map` - the bimap to constrain
        `constraint` - the constraint that validates added entries
      Returns:
        a constrained view of the specified bimap