Package org.eclipse.collections.impl.multimap.bag

Class SynchronizedBagMultimap<K,V>

java.lang.Object

org.eclipse.collections.impl.multimap.AbstractSynchronizedMultimap<K,V>

org.eclipse.collections.impl.multimap.bag.SynchronizedBagMultimap<K,V>

All Implemented Interfaces:

Serializable, BagMultimap<K,V>, MutableBagIterableMultimap<K,V>, MutableBagMultimap<K,V>, UnsortedBagMultimap<K,V>, Multimap<K,V>, MutableMultimap<K,V>

public class SynchronizedBagMultimap<K,V>
extends AbstractSynchronizedMultimap<K,V>
implements MutableBagMultimap<K,V>, Serializable

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor	Description
SynchronizedBagMultimap(MutableBagMultimap<K,V> multimap)
SynchronizedBagMultimap(MutableBagMultimap<K,V> multimap, Object newLock)

Method Summary

Modifier and Type	Method	Description
MutableBagMultimap<K,V>	asSynchronized()	Returns a synchronized wrapper backed by this multimap.
<K2, V2> MutableBagMultimap<K2,V2>	collectKeyMultiValues(Function<? super K,? extends K2> keyFunction, Function<? super V,? extends V2> valueFunction)	Returns a new multimap with the results of applying the specified keyFunction and valueFunction on each key and corresponding values of the source multimap.
<K2, V2> MutableBagMultimap<K2,V2>	collectKeysValues(Function2<? super K,? super V,Pair<K2,V2>> function)	Returns a new multimap with the results of applying the specified function on each key and value of the source multimap.
<V2> MutableBagMultimap<K,V2>	collectValues(Function<? super V,? extends V2> function)	Returns a new multimap with the results of applying the specified function on each value of the source multimap.
MutableBagMultimap<V,K>	flip()	Given a Multimap from Domain -> Range return a multimap from Range -> Domain.
MutableBag<V>	get(K key)	Returns a view of all values associated with the given key.
MutableBag<V>	getIfAbsentPutAll(K key, Iterable<? extends V> values)	Puts values into multimap if there are no values already associated with key.
MutableBagMultimap<K,V>	newEmpty()	Creates a new instance of the same implementation type, using the default capacity and growth parameters.
static <K, V> SynchronizedBagMultimap<K,V>	of(MutableBagMultimap<K,V> multimap)	This method will take a Multimap and wrap it directly in a SynchronizedBagMultimap.
static <K, V> SynchronizedBagMultimap<K,V>	of(MutableBagMultimap<K,V> multimap, Object lock)	This method will take a Multimap and wrap it directly in a SynchronizedBagMultimap.
void	putOccurrences(K key, V value, int occurrences)
MutableBagMultimap<K,V>	rejectKeysMultiValues(Predicate2<? super K,? super Iterable<V>> predicate)	Returns all elements of the source multimap that don't satisfy the predicate.
MutableBagMultimap<K,V>	rejectKeysValues(Predicate2<? super K,? super V> predicate)	Returns all elements of the source multimap that don't satisfy the predicate.
MutableBag<V>	removeAll(Object key)
MutableBag<V>	replaceValues(K key, Iterable<? extends V> values)
MutableBagMultimap<K,V>	selectKeysMultiValues(Predicate2<? super K,? super Iterable<V>> predicate)	Returns all elements of the source multimap that satisfies the predicate.
MutableBagMultimap<K,V>	selectKeysValues(Predicate2<? super K,? super V> predicate)	Returns all elements of the source multimap that satisfies the predicate.
ImmutableBagMultimap<K,V>	toImmutable()	Returns an immutable copy of this Multimap if it is not already immutable.
MutableBagMultimap<K,V>	toMutable()	Returns a mutable copy of this Multimap.

Methods inherited from class org.eclipse.collections.impl.multimap.AbstractSynchronizedMultimap

add, clear, collectKeyMultiValues, collectKeysValues, collectValues, containsKey, containsKeyAndValue, containsValue, equals, forEachKey, forEachKeyMultiValues, forEachKeyValue, forEachValue, hashCode, isEmpty, keyBag, keyMultiValuePairsView, keySet, keysView, keyValuePairsView, multiValuesView, notEmpty, put, putAll, putAll, putAllPairs, putAllPairs, rejectKeysMultiValues, rejectKeysValues, remove, selectKeysMultiValues, selectKeysValues, size, sizeDistinct, toMap, toMap, toString, valuesView

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface org.eclipse.collections.api.multimap.Multimap

collectKeyMultiValues, collectKeysValues, collectValues, containsKey, containsKeyAndValue, containsValue, equals, forEachKey, forEachKeyMultiValues, forEachKeyValue, forEachValue, hashCode, isEmpty, keyBag, keyMultiValuePairsView, keySet, keysView, keyValuePairsView, multiValuesView, notEmpty, rejectKeysMultiValues, rejectKeysValues, selectKeysMultiValues, selectKeysValues, size, sizeDistinct, toMap, toMap, valuesView

Methods inherited from interface org.eclipse.collections.api.multimap.MutableMultimap

add, clear, put, putAll, putAll, putAllPairs, putAllPairs, remove

Constructor Details

SynchronizedBagMultimap

public SynchronizedBagMultimap(MutableBagMultimap<K,V> multimap)

SynchronizedBagMultimap

public SynchronizedBagMultimap(MutableBagMultimap<K,V> multimap, Object newLock)

Method Details

of

public static <K, V> SynchronizedBagMultimap<K,V> of(MutableBagMultimap<K,V> multimap)

This method will take a Multimap and wrap it directly in a SynchronizedBagMultimap.

of

public static <K, V> SynchronizedBagMultimap<K,V> of(MutableBagMultimap<K,V> multimap, Object lock)

This method will take a Multimap and wrap it directly in a SynchronizedBagMultimap. Additionally, a developer specifies which lock to use with the collection.

replaceValues

public MutableBag<V> replaceValues(K key, Iterable<? extends V> values)

Specified by:

replaceValues in interface MutableBagIterableMultimap<K,V>

Specified by:

replaceValues in interface MutableBagMultimap<K,V>

Specified by:

replaceValues in interface MutableMultimap<K,V>

removeAll

public MutableBag<V> removeAll(Object key)

Specified by:

removeAll in interface MutableBagIterableMultimap<K,V>

Specified by:

removeAll in interface MutableBagMultimap<K,V>

Specified by:

removeAll in interface MutableMultimap<K,V>

newEmpty

public MutableBagMultimap<K,V> newEmpty()

Description copied from interface: Multimap

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

Specified by:

newEmpty in interface BagMultimap<K,V>

Specified by:

newEmpty in interface Multimap<K,V>

Specified by:

newEmpty in interface MutableBagIterableMultimap<K,V>

Specified by:

newEmpty in interface MutableBagMultimap<K,V>

Specified by:

newEmpty in interface MutableMultimap<K,V>

Specified by:

newEmpty in interface UnsortedBagMultimap<K,V>

get

public MutableBag<V> get(K key)

Description copied from interface: Multimap

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

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

Specified by:

get in interface BagMultimap<K,V>

Specified by:

get in interface Multimap<K,V>

Specified by:

get in interface MutableBagIterableMultimap<K,V>

Specified by:

get in interface MutableBagMultimap<K,V>

Specified by:

get in interface MutableMultimap<K,V>

Specified by:

get in interface UnsortedBagMultimap<K,V>

Parameters:

key - the key to search for

getIfAbsentPutAll

public MutableBag<V> getIfAbsentPutAll(K key, Iterable<? extends V> values)

Description copied from interface: MutableMultimap

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)

Specified by:

getIfAbsentPutAll in interface MutableBagIterableMultimap<K,V>

Specified by:

getIfAbsentPutAll in interface MutableBagMultimap<K,V>

Specified by:

getIfAbsentPutAll in interface MutableMultimap<K,V>

toMutable

public MutableBagMultimap<K,V> toMutable()

Description copied from interface: Multimap

Returns a mutable copy of this Multimap.

Specified by:

toMutable in interface Multimap<K,V>

Specified by:

toMutable in interface UnsortedBagMultimap<K,V>

toImmutable

public ImmutableBagMultimap<K,V> toImmutable()

Description copied from interface: Multimap

Returns an immutable copy of this Multimap if it is not already immutable. If the Multimap is immutable, it will return itself.

The returned Multimap will be Serializable if this Multimap is Serializable.

Specified by:

toImmutable in interface Multimap<K,V>

Specified by:

toImmutable in interface UnsortedBagMultimap<K,V>

putOccurrences

public void putOccurrences(K key, V value, int occurrences)

Specified by:

putOccurrences in interface MutableBagMultimap<K,V>

flip

public MutableBagMultimap<V,K> flip()

Description copied from interface: Multimap

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

Specified by:

flip in interface BagMultimap<K,V>

Specified by:

flip in interface Multimap<K,V>

Specified by:

flip in interface MutableBagIterableMultimap<K,V>

Specified by:

flip in interface MutableBagMultimap<K,V>

Specified by:

flip in interface MutableMultimap<K,V>

selectKeysValues

public MutableBagMultimap<K,V> selectKeysValues(Predicate2<? super K,? super V> predicate)

Description copied from interface: Multimap

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"));
     }
 });
 

Specified by:

selectKeysValues in interface BagMultimap<K,V>

Specified by:

selectKeysValues in interface Multimap<K,V>

Specified by:

selectKeysValues in interface MutableBagIterableMultimap<K,V>

Specified by:

selectKeysValues in interface MutableBagMultimap<K,V>

Specified by:

selectKeysValues in interface MutableMultimap<K,V>

Specified by:

selectKeysValues in interface UnsortedBagMultimap<K,V>

Parameters:

predicate - a Predicate2 to use as the select criteria

Returns:

Multimap, which contains elements as a result of the select criteria

rejectKeysValues

public MutableBagMultimap<K,V> rejectKeysValues(Predicate2<? super K,? super V> predicate)

Description copied from interface: Multimap

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"));
     }
 });
 

Specified by:

rejectKeysValues in interface BagMultimap<K,V>

Specified by:

rejectKeysValues in interface Multimap<K,V>

Specified by:

rejectKeysValues in interface MutableBagIterableMultimap<K,V>

Specified by:

rejectKeysValues in interface MutableBagMultimap<K,V>

Specified by:

rejectKeysValues in interface MutableMultimap<K,V>

Specified by:

rejectKeysValues in interface UnsortedBagMultimap<K,V>

Parameters:

predicate - a Predicate2 to use as the reject criteria

Returns:

Multimap, which contains elements that don't satisfy the predicate

selectKeysMultiValues

public MutableBagMultimap<K,V> selectKeysMultiValues(Predicate2<? super K,? super Iterable<V>> predicate)

Description copied from interface: Multimap

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);
     }
 });
 

Specified by:

selectKeysMultiValues in interface BagMultimap<K,V>

Specified by:

selectKeysMultiValues in interface Multimap<K,V>

Specified by:

selectKeysMultiValues in interface MutableBagIterableMultimap<K,V>

Specified by:

selectKeysMultiValues in interface MutableBagMultimap<K,V>

Specified by:

selectKeysMultiValues in interface MutableMultimap<K,V>

Specified by:

selectKeysMultiValues in interface UnsortedBagMultimap<K,V>

Parameters:

predicate - a Predicate2 to use as the select criteria

Returns:

Multimap, which contains elements as a result of the select criteria

rejectKeysMultiValues

public MutableBagMultimap<K,V> rejectKeysMultiValues(Predicate2<? super K,? super Iterable<V>> predicate)

Description copied from interface: Multimap

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);
     }
 });
 

Specified by:

rejectKeysMultiValues in interface BagMultimap<K,V>

Specified by:

rejectKeysMultiValues in interface Multimap<K,V>

Specified by:

rejectKeysMultiValues in interface MutableBagIterableMultimap<K,V>

Specified by:

rejectKeysMultiValues in interface MutableBagMultimap<K,V>

Specified by:

rejectKeysMultiValues in interface MutableMultimap<K,V>

Specified by:

rejectKeysMultiValues in interface UnsortedBagMultimap<K,V>

Parameters:

predicate - a Predicate2 to use as the reject criteria

Returns:

Multimap, which contains elements that don't satisfy the predicate

collectKeysValues

public <K2, V2> MutableBagMultimap<K2,V2> collectKeysValues(Function2<? super K,? super V,Pair<K2,V2>> function)

Description copied from interface: Multimap

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());
     }
 });
 

Specified by:

collectKeysValues in interface Multimap<K,V>

Specified by:

collectKeysValues in interface MutableBagIterableMultimap<K,V>

Specified by:

collectKeysValues in interface MutableBagMultimap<K,V>

Specified by:

collectKeysValues in interface MutableMultimap<K,V>

Specified by:

collectKeysValues in interface UnsortedBagMultimap<K,V>

Parameters:

function - a Function2 to use for transformation

Returns:

Multimap, which contains elements as a result of the transformation

collectKeyMultiValues

public <K2, V2> MutableBagMultimap<K2,V2> collectKeyMultiValues(Function<? super K,? extends K2> keyFunction, Function<? super V,? extends V2> valueFunction)

Description copied from interface: Multimap

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);
 

Specified by:

collectKeyMultiValues in interface Multimap<K,V>

Specified by:

collectKeyMultiValues in interface MutableBagIterableMultimap<K,V>

Specified by:

collectKeyMultiValues in interface MutableBagMultimap<K,V>

Specified by:

collectKeyMultiValues in interface MutableMultimap<K,V>

Specified by:

collectKeyMultiValues in interface UnsortedBagMultimap<K,V>

Parameters:

keyFunction - Function to use transformation to get the key

valueFunction - Function to use transformation to get the values

Returns:

a new Multimap, which contains elements as a result of the transformation

collectValues

public <V2> MutableBagMultimap<K,V2> collectValues(Function<? super V,? extends V2> function)

Description copied from interface: Multimap

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();
     }
 });
 

Specified by:

collectValues in interface Multimap<K,V>

Specified by:

collectValues in interface MutableBagIterableMultimap<K,V>

Specified by:

collectValues in interface MutableBagMultimap<K,V>

Specified by:

collectValues in interface MutableMultimap<K,V>

Specified by:

collectValues in interface UnsortedBagMultimap<K,V>

Parameters:

function - a Function to use for transformation

Returns:

Multimap, which contains elements as a result of the transformation

asSynchronized

public MutableBagMultimap<K,V> asSynchronized()

Description copied from interface: MutableMultimap

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.

Specified by:

asSynchronized in interface MutableBagIterableMultimap<K,V>

Specified by:

asSynchronized in interface MutableBagMultimap<K,V>

Specified by:

asSynchronized in interface MutableMultimap<K,V>

Returns:

a synchronized view of this multimap.

See Also:

MutableMapIterable.asSynchronized()