public Interface MutableMultimap<K, V>

Modification operation similar to put, however, takes the key-value pair as the input.

Parameters

keyValuePair:Pair<? extends K, ? extends V>

key value pair to add in the multimap

Since

6.0

See Also

put(Object, Object)

Returns a synchronized wrapper backed by this multimap. The preferred way of iterating over a synchronized multimap is to use the forEachKey(), forEachValue(), forEachKeyValue() and forEachKeyMultiValues methods which are properly synchronized internally.

 MutableMultimap synchedMultimap = multimap.asSynchronized();

 synchedMultimap.forEachKey(key -> ... );
 synchedMultimap.forEachValue(value -> ... );
 synchedMultimap.forEachKeyValue((key, value) -> ... );
 synchedMultimap.forEachKeyMultiValues((key, values) -> ... );

If you want to iterate imperatively over the keySet(), keysView(), valuesView(), or other views, you will need to protect the iteration by wrapping the code in a synchronized block on the multimap.

Returns:MutableMultimap<K, V>

a synchronized view of this multimap.

Since

8.0

See Also

MutableMapIterable#asSynchronized()

Redeclares org.eclipse.collections.api.multimap.Multimap.collectKeyMultiValues.

Doc from org.eclipse.collections.api.multimap.Multimap.collectKeyMultiValues.

Returns a new multimap with the results of applying the specified keyFunction and valueFunction on each key and corresponding values of the source multimap. This method is also commonly called transform or map.

e.g.
return multimap.collectKeyMultiValues(each -> each + 1, Person::getLastName);

Annotations

@Override

Redeclares org.eclipse.collections.api.multimap.Multimap.collectKeysValues.

Doc from org.eclipse.collections.api.multimap.Multimap.collectKeysValues.

Returns a new multimap with the results of applying the specified function on each key and value of the source multimap. This method is also commonly called transform or map.

e.g.
return multimap.collectKeysValues(new Function2<Integer, Person, Pair<String, String>>()
{
    public Pair<String, String> valueOf(Integer age, Person person)
    {
        return Tuples.pair(age.toString(), person.getLastName());
    }
});

Annotations

@Override

Redeclares org.eclipse.collections.api.multimap.Multimap.collectValues.

Doc from org.eclipse.collections.api.multimap.Multimap.collectValues.

Returns a new multimap with the results of applying the specified function on each value of the source multimap. This method is also commonly called transform or map.

e.g.
return multimap.collectValues(new Function<Person, String>()
{
    public String valueOf(Person person)
    {
        return person.getLastName();
    }
});

Annotations

@Override

Redeclares org.eclipse.collections.api.multimap.Multimap.flip.

Doc from org.eclipse.collections.api.multimap.Multimap.flip.

Given a Multimap from Domain -> Range return a multimap from Range -> Domain.

Annotations

@Override

Redeclares org.eclipse.collections.api.multimap.Multimap.get.

Doc from org.eclipse.collections.api.multimap.Multimap.get.

Returns a view of all values associated with the given key.

If the given key does not exist, an empty RichIterable is returned.

Annotations

@Override

Puts values into multimap if there are no values already associated with key. Then returns a view of the values associated with key, like the result of Multimap#get(Object)

Since

10.0

Redeclares org.eclipse.collections.api.multimap.Multimap.newEmpty.

Doc from org.eclipse.collections.api.multimap.Multimap.newEmpty.

Creates a new instance of the same implementation type, using the default capacity and growth parameters.

Annotations

@Override

Redeclares org.eclipse.collections.api.multimap.Multimap.rejectKeysMultiValues.

Doc from org.eclipse.collections.api.multimap.Multimap.rejectKeysMultiValues.

Returns all elements of the source multimap that don't satisfy the predicate.

e.g.
return multimap.rejectKeysMultiValues(new Predicate2<Integer, Iterable<Person>>()
{
    public boolean accept(Integer age, Iterable<Person> values)
    {
        return (age >= 18)
                 && ((RichIterable<Person>)values.size() >= 2);
    }
});

Annotations

@Override

Redeclares org.eclipse.collections.api.multimap.Multimap.rejectKeysValues.

Doc from org.eclipse.collections.api.multimap.Multimap.rejectKeysValues.

Returns all elements of the source multimap that don't satisfy the predicate.

e.g.
return multimap.rejectKeysValues(new Predicate2<Integer, Person>()
{
    public boolean accept(Integer age, Person person)
    {
        return (age >= 18)
                 && (person.getAddress().getCity().equals("Metuchen"));
    }
});

Annotations

@Override

Redeclares org.eclipse.collections.api.multimap.Multimap.selectKeysMultiValues.

Doc from org.eclipse.collections.api.multimap.Multimap.selectKeysMultiValues.

Returns all elements of the source multimap that satisfies the predicate. This method is also commonly called filter.

e.g.
return multimap.selectKeysMultiValues(new Predicate2<Integer, Iterable<Person>>()
{
    public boolean accept(Integer age, Iterable<Person> values)
    {
        return (age >= 18)
                 && ((RichIterable<Person>)values.size() >= 2);
    }
});

Annotations

@Override

Redeclares org.eclipse.collections.api.multimap.Multimap.selectKeysValues.

Doc from org.eclipse.collections.api.multimap.Multimap.selectKeysValues.

Returns all elements of the source multimap that satisfies the predicate. This method is also commonly called filter.

e.g.
return multimap.selectKeysValues(new Predicate2<Integer, Person>()
{
    public boolean accept(Integer age, Person person)
    {
        return (age >= 18)
                 && (person.getAddress().getCity().equals("Metuchen"));
    }
});

Annotations

@Override

Puts the key / values combination into the MutableMultimap and returns the MutableMultimap (this).

Since

11.1

Puts the key / value combination into the MutableMultimap and returns the MutableMultimap (this).

Since

11.1