Package org.eclipse.collections.impl.forkjoin

Class FJIterate

java.lang.Object

org.eclipse.collections.impl.forkjoin.FJIterate

public final class FJIterate
extends Object

The FJIterate class contains several parallel algorithms that work with Collections and make use of Java's fork-join framework. All of the higher level parallel algorithms depend on the basic parallel algorithm named forEach. The forEach algorithm employs a batching fork and join approach.

All Collections that are not either a RandomAccess or List are first converted to a Java array using Iterate.toArray(Iterable), and then run with one of the FJIterate.forEach methods.

See Also:

ParallelIterate

Field Summary

Fields

Modifier and Type	Field	Description
static int	DEFAULT_MIN_FORK_SIZE

Method Summary

Modifier and Type	Method	Description
static <T,K,V> MutableMap<K,V>	aggregateBy(Iterable<T> iterable, Function<? super T,? extends K> groupBy, Function0<? extends V> zeroValueFactory, Function2<? super V,? super T,? extends V> nonMutatingAggregator)
static <T,K,V> MutableMap<K,V>	aggregateBy(Iterable<T> iterable, Function<? super T,? extends K> groupBy, Function0<? extends V> zeroValueFactory, Function2<? super V,? super T,? extends V> nonMutatingAggregator, int batchSize)
static <T,K,V> MutableMap<K,V>	aggregateBy(Iterable<T> iterable, Function<? super T,? extends K> groupBy, Function0<? extends V> zeroValueFactory, Function2<? super V,? super T,? extends V> nonMutatingAggregator, int batchSize, ForkJoinPool executor)
static <T,K,V,R extends MutableMapIterable<K,V>> R	aggregateBy(Iterable<T> iterable, Function<? super T,? extends K> groupBy, Function0<? extends V> zeroValueFactory, Function2<? super V,? super T,? extends V> nonMutatingAggregator, R mutableMap)
static <T,K,V,R extends MutableMapIterable<K,V>> R	aggregateBy(Iterable<T> iterable, Function<? super T,? extends K> groupBy, Function0<? extends V> zeroValueFactory, Function2<? super V,? super T,? extends V> nonMutatingAggregator, R mutableMap, int batchSize)
static <T,K,V,R extends MutableMapIterable<K,V>> R	aggregateBy(Iterable<T> iterable, Function<? super T,? extends K> groupBy, Function0<? extends V> zeroValueFactory, Function2<? super V,? super T,? extends V> nonMutatingAggregator, R mutableMap, int batchSize, ForkJoinPool executor)
static <T,K,V> MutableMap<K,V>	aggregateInPlaceBy(Iterable<T> iterable, Function<? super T,? extends K> groupBy, Function0<? extends V> zeroValueFactory, Procedure2<? super V,? super T> mutatingAggregator)
static <T,K,V> MutableMap<K,V>	aggregateInPlaceBy(Iterable<T> iterable, Function<? super T,? extends K> groupBy, Function0<? extends V> zeroValueFactory, Procedure2<? super V,? super T> mutatingAggregator, int batchSize)
static <T,K,V> MutableMap<K,V>	aggregateInPlaceBy(Iterable<T> iterable, Function<? super T,? extends K> groupBy, Function0<? extends V> zeroValueFactory, Procedure2<? super V,? super T> mutatingAggregator, int batchSize, ForkJoinPool executor)
static <T,K,V,R extends MutableMapIterable<K,V>> R	aggregateInPlaceBy(Iterable<T> iterable, Function<? super T,? extends K> groupBy, Function0<? extends V> zeroValueFactory, Procedure2<? super V,? super T> mutatingAggregator, R mutableMap)
static <T,K,V,R extends MutableMapIterable<K,V>> R	aggregateInPlaceBy(Iterable<T> iterable, Function<? super T,? extends K> groupBy, Function0<? extends V> zeroValueFactory, Procedure2<? super V,? super T> mutatingAggregator, R mutableMap, int batchSize)
static <T,K,V,R extends MutableMapIterable<K,V>> R	aggregateInPlaceBy(Iterable<T> iterable, Function<? super T,? extends K> groupBy, Function0<? extends V> zeroValueFactory, Procedure2<? super V,? super T> mutatingAggregator, R mutableMap, int batchSize, ForkJoinPool executor)
static <T,V> Collection<V>	collect(Iterable<T> iterable, Function<? super T,V> function)	Same effect as Iterate.collect(Iterable, Function), but executed in parallel batches.
static <T,V> Collection<V>	collect(Iterable<T> iterable, Function<? super T,V> function, boolean allowReorderedResult)	Same effect as Iterate.collect(Iterable, Function), but executed in parallel batches, and with potentially reordered result.
static <T,V,R extends Collection<V>> R	collect(Iterable<T> iterable, Function<? super T,V> function, R target, boolean allowReorderedResult)	Same effect as Iterate.collect(Iterable, Function), but executed in parallel batches, and writing output into the specified collection.
static <T,V,R extends Collection<V>> R	collect(Iterable<T> iterable, Function<? super T,V> function, R target, int batchSize, ForkJoinPool executor, boolean allowReorderedResult)
static <T,V> Collection<V>	collectIf(Iterable<T> iterable, Predicate<? super T> predicate, Function<? super T,V> function)	Same effect as Iterate.collectIf(Iterable, Predicate, Function), but executed in parallel batches.
static <T,V> Collection<V>	collectIf(Iterable<T> iterable, Predicate<? super T> predicate, Function<? super T,V> function, boolean allowReorderedResult)	Same effect as Iterate.collectIf(Iterable, Predicate, Function), but executed in parallel batches, and with potentially reordered results.
static <T,V,R extends Collection<V>> R	collectIf(Iterable<T> iterable, Predicate<? super T> predicate, Function<? super T,V> function, R target, boolean allowReorderedResult)	Same effect as Iterate.collectIf(Iterable, Predicate, Function), but executed in parallel batches, and writing output into the specified collection.
static <T,V,R extends Collection<V>> R	collectIf(Iterable<T> iterable, Predicate<? super T> predicate, Function<? super T,V> function, R target, int batchSize, ForkJoinPool executor, boolean allowReorderedResult)
static <T> int	count(Iterable<T> iterable, Predicate<? super T> predicate)	Same effect as Iterate.count(Iterable, Predicate), but executed in parallel batches.
static <T> int	count(Iterable<T> iterable, Predicate<? super T> predicate, int batchSize, ForkJoinPool executor)	Same effect as Iterate.count(Iterable, Predicate), but executed in parallel batches.
static <T,V> Collection<V>	flatCollect(Iterable<T> iterable, Function<? super T,? extends Iterable<V>> function)
static <T,V> Collection<V>	flatCollect(Iterable<T> iterable, Function<? super T,? extends Iterable<V>> function, boolean allowReorderedResult)
static <T,V,R extends Collection<V>> R	flatCollect(Iterable<T> iterable, Function<? super T,? extends Iterable<V>> function, R target, boolean allowReorderedResult)
static <T,V,R extends Collection<V>> R	flatCollect(Iterable<T> iterable, Function<? super T,? extends Iterable<V>> function, R target, int batchSize, ForkJoinPool executor, boolean allowReorderedResult)
static <T> void	forEach(Iterable<T> iterable, Procedure<? super T> procedure)	Iterate over the collection specified in parallel batches using default runtime parameter values.
static <T> void	forEach(Iterable<T> iterable, Procedure<? super T> procedure, int batchSize)	Iterate over the collection specified in parallel batches using default runtime parameter values.
static <T> void	forEach(Iterable<T> iterable, Procedure<? super T> procedure, int batchSize, ForkJoinPool executor)
static <T,PT extends Procedure<? super T>> void	forEach(Iterable<T> iterable, ProcedureFactory<PT> procedureFactory, Combiner<PT> combiner)
static <T,PT extends Procedure<? super T>> void	forEach(Iterable<T> iterable, ProcedureFactory<PT> procedureFactory, Combiner<PT> combiner, int batchSize)	Iterate over the collection specified in parallel batches using the default values for the task size.
static <T,PT extends Procedure<? super T>> void	forEach(Iterable<T> iterable, ProcedureFactory<PT> procedureFactory, Combiner<PT> combiner, int minForkSize, int taskCount)	Iterate over the collection specified in parallel batches using the default values for the task size.
static <T,PT extends Procedure<? super T>> void	forEach(Iterable<T> iterable, ProcedureFactory<PT> procedureFactory, Combiner<PT> combiner, int minForkSize, int taskCount, ForkJoinPool executor)
static <T,PT extends Procedure<? super T>> void	forEach(Iterable<T> iterable, ProcedureFactory<PT> blockFactory, Combiner<PT> combiner, int batchSize, ForkJoinPool executor)
static <T,PT extends Procedure<? super T>> void	forEach(Iterable<T> iterable, ProcedureFactory<PT> procedureFactory, Combiner<PT> combiner, ForkJoinPool executor)
static <T,PT extends Procedure<? super T>> void	forEach(Iterable<T> iterable, PT procedure, int minForkSize, int taskCount)	Iterate over the collection specified in parallel batches using the specified minimum fork and task count sizes.
static <T,PT extends Procedure<? super T>> void	forEach(Iterable<T> iterable, PT procedure, int minForkSize, int taskCount, ForkJoinPool executor)
static <T,PT extends Procedure<? super T>> void	forEach(Iterable<T> iterable, PT procedure, ForkJoinPool executor)	Iterate over the collection specified in parallel batches using default runtime parameter values and the specified executor.
static <T,PT extends Procedure<? super T>> void	forEachInBatchWithExecutor(BatchIterable<T> batchIterable, ProcedureFactory<PT> procedureFactory, Combiner<PT> combiner, int minForkSize, int taskCount, ForkJoinPool executor)
static <T,PT extends Procedure<? super T>> void	forEachInListOnExecutor(List<T> list, ProcedureFactory<PT> procedureFactory, Combiner<PT> combiner, int minForkSize, int taskCount, ForkJoinPool executor)
static <T> void	forEachWithIndex(Iterable<T> iterable, ObjectIntProcedure<? super T> procedure)	Iterate over the collection specified, in parallel batches using default runtime parameter values.
static <T,PT extends ObjectIntProcedure<? super T>> void	forEachWithIndex(Iterable<T> iterable, ObjectIntProcedureFactory<PT> procedureFactory, Combiner<PT> combiner, int minForkSize, int taskCount)
static <T,PT extends ObjectIntProcedure<? super T>> void	forEachWithIndex(Iterable<T> iterable, ObjectIntProcedureFactory<PT> procedureFactory, Combiner<PT> combiner, int minForkSize, int taskCount, ForkJoinPool executor)
static <T,PT extends ObjectIntProcedure<? super T>> void	forEachWithIndex(Iterable<T> iterable, ObjectIntProcedureFactory<PT> procedureFactory, Combiner<PT> combiner, ForkJoinPool executor)
static <T,PT extends ObjectIntProcedure<? super T>> void	forEachWithIndex(Iterable<T> iterable, PT procedure, int minForkSize, int taskCount)	Iterate over the collection specified in parallel batches.
static <T,PT extends ObjectIntProcedure<? super T>> void	forEachWithIndex(Iterable<T> iterable, PT procedure, ForkJoinPool executor)	Iterate over the collection specified in parallel batches using the default runtime parameters.
static <T,PT extends ObjectIntProcedure<? super T>> void	forEachWithIndexInListOnExecutor(List<T> list, ObjectIntProcedureFactory<PT> procedureFactory, Combiner<PT> combiner, int minForkSize, int taskCount, ForkJoinPool executor)
static <K,V> MutableMultimap<K,V>	groupBy(Iterable<V> iterable, Function<? super V,? extends K> function)	Same effect as Iterate.groupBy(Iterable, Function), but executed in parallel batches, and writing output into a SynchronizedPutFastListMultimap.
static <K,V> MutableMultimap<K,V>	groupBy(Iterable<V> iterable, Function<? super V,? extends K> function, int batchSize)	Same effect as Iterate.groupBy(Iterable, Function), but executed in parallel batches, and writing output into a SynchronizedPutFastListMultimap.
static <K,V> MutableMultimap<K,V>	groupBy(Iterable<V> iterable, Function<? super V,? extends K> function, int batchSize, ForkJoinPool executor)	Same effect as Iterate.groupBy(Iterable, Function), but executed in parallel batches, and writing output into a SynchronizedPutFastListMultimap.
static <K,V,R extends MutableMultimap<K,V>> MutableMultimap<K,V>	groupBy(Iterable<V> iterable, Function<? super V,? extends K> function, R concurrentMultimap)	Same effect as Iterate.groupBy(Iterable, Function), but executed in parallel batches, and writing output into a SynchronizedPutFastListMultimap.
static <K,V,R extends MutableMultimap<K,V>> MutableMultimap<K,V>	groupBy(Iterable<V> iterable, Function<? super V,? extends K> function, R concurrentMultimap, int batchSize)	Same effect as Iterate.groupBy(Iterable, Function), but executed in parallel batches, and writing output into a SynchronizedPutFastListMultimap.
static <K,V,R extends MutableMultimap<K,V>> MutableMultimap<K,V>	groupBy(Iterable<V> iterable, Function<? super V,? extends K> function, R concurrentMultimap, int batchSize, ForkJoinPool executor)	Same effect as Iterate.groupBy(Iterable, Function), but executed in parallel batches, and writing output into a SynchronizedPutFastListMultimap.
static <T> Collection<T>	reject(Iterable<T> iterable, Predicate<? super T> predicate)	Same effect as Iterate.reject(Iterable, Predicate), but executed in parallel batches.
static <T> Collection<T>	reject(Iterable<T> iterable, Predicate<? super T> predicate, boolean allowReorderedResult)	Same effect as Iterate.reject(Iterable, Predicate), but executed in parallel batches, and with a potentially reordered result.
static <T,R extends Collection<T>> R	reject(Iterable<T> iterable, Predicate<? super T> predicate, R target, boolean allowReorderedResult)	Same effect as Iterate.reject(Iterable, Predicate), but executed in parallel batches, and writing output into the specified collection.
static <T,R extends Collection<T>> R	reject(Iterable<T> iterable, Predicate<? super T> predicate, R target, int batchSize, ForkJoinPool executor, boolean allowReorderedResult)
static <T> Collection<T>	select(Iterable<T> iterable, Predicate<? super T> predicate)	Same effect as Iterate.select(Iterable, Predicate), but executed in parallel batches.
static <T> Collection<T>	select(Iterable<T> iterable, Predicate<? super T> predicate, boolean allowReorderedResult)	Same effect as Iterate.select(Iterable, Predicate), but executed in parallel batches, and with a potentially reordered result.
static <T,R extends Collection<T>> R	select(Iterable<T> iterable, Predicate<? super T> predicate, R target, boolean allowReorderedResult)	Same effect as Iterate.select(Iterable, Predicate), but executed in parallel batches, and writing output into the specified collection.
static <T,R extends Collection<T>> R	select(Iterable<T> iterable, Predicate<? super T> predicate, R target, int batchSize, ForkJoinPool executor, boolean allowReorderedResult)	Same effect as Iterate.select(Iterable, Predicate), but executed in parallel batches, and writing output into the specified collection.

Methods inherited from class java.lang.Object

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

Field Detail

DEFAULT_MIN_FORK_SIZE

public static final int DEFAULT_MIN_FORK_SIZE

See Also:

Constant Field Values

Method Detail

forEachWithIndex

public static <T> void forEachWithIndex(Iterable<T> iterable,
                                        ObjectIntProcedure<? super T> procedure)

Iterate over the collection specified, in parallel batches using default runtime parameter values. The ObjectIntProcedure used must be stateless, or use concurrent aware objects if they are to be shared.

e.g.

 final ConcurrentMutableMap<Integer, Object> chm = new ConcurrentHashMap<Integer, Object>();
 FJIterate.forEachWithIndex(collection, new ObjectIntProcedure()
 {
     public void value(Object object, int index)
     {
         chm.put(index, object);
     }
 });
 

forEachWithIndex

public static <T,PT extends ObjectIntProcedure<? super T>> void forEachWithIndex(Iterable<T> iterable,
                                                                                 PT procedure,
                                                                                 ForkJoinPool executor)

Iterate over the collection specified in parallel batches using the default runtime parameters. The ObjectIntProcedure used must be stateless, or use concurrent aware objects if they are to be shared. The code is executed against the specified executor.

e.g.
 final ConcurrentMutableMap<Integer, Object> chm = new ConcurrentHashMap<Integer, Object>();
 FJIterate.forEachWithIndex(collection, new ObjectIntProcedure()
 {
     public void value(Object object, int index)
     {
         chm.put(index, object);
     }
 }, executor);
 

Parameters:

executor - Use this executor for all execution.

forEachWithIndex

public static <T,PT extends ObjectIntProcedure<? super T>> void forEachWithIndex(Iterable<T> iterable,
                                                                                 PT procedure,
                                                                                 int minForkSize,
                                                                                 int taskCount)

Iterate over the collection specified in parallel batches. The ObjectIntProcedure used must be stateless, or use concurrent aware objects if they are to be shared. The specified minimum fork size and task count are used instead of the default values.

Parameters:

minForkSize - Only run in parallel if input collection is longer than this.

taskCount - The number of parallel tasks to submit to the executor.

See Also:

forEachWithIndex(Iterable, ObjectIntProcedure)

forEachWithIndex

public static <T,PT extends ObjectIntProcedure<? super T>> void forEachWithIndex(Iterable<T> iterable,
                                                                                 ObjectIntProcedureFactory<PT> procedureFactory,
                                                                                 Combiner<PT> combiner,
                                                                                 ForkJoinPool executor)

forEachWithIndex

public static <T,PT extends ObjectIntProcedure<? super T>> void forEachWithIndex(Iterable<T> iterable,
                                                                                 ObjectIntProcedureFactory<PT> procedureFactory,
                                                                                 Combiner<PT> combiner,
                                                                                 int minForkSize,
                                                                                 int taskCount)

forEachWithIndex

public static <T,PT extends ObjectIntProcedure<? super T>> void forEachWithIndex(Iterable<T> iterable,
                                                                                 ObjectIntProcedureFactory<PT> procedureFactory,
                                                                                 Combiner<PT> combiner,
                                                                                 int minForkSize,
                                                                                 int taskCount,
                                                                                 ForkJoinPool executor)

forEachWithIndexInListOnExecutor

public static <T,PT extends ObjectIntProcedure<? super T>> void forEachWithIndexInListOnExecutor(List<T> list,
                                                                                                 ObjectIntProcedureFactory<PT> procedureFactory,
                                                                                                 Combiner<PT> combiner,
                                                                                                 int minForkSize,
                                                                                                 int taskCount,
                                                                                                 ForkJoinPool executor)

forEach

public static <T> void forEach(Iterable<T> iterable,
                               Procedure<? super T> procedure)

Iterate over the collection specified in parallel batches using default runtime parameter values. The Procedure used must be stateless, or use concurrent aware objects if they are to be shared.

e.g.

 final ConcurrentMutableMap<Object, Boolean> chm = new ConcurrentHashMap<Object, Boolean>();
 FJIterate.forEach(collection, new Procedure()
 {
     public void value(Object object)
     {
         chm.put(object, Boolean.TRUE);
     }
 });
 

forEach

public static <T> void forEach(Iterable<T> iterable,
                               Procedure<? super T> procedure,
                               int batchSize)

Iterate over the collection specified in parallel batches using default runtime parameter values. The Procedure used must be stateless, or use concurrent aware objects if they are to be shared.

e.g.

 final ConcurrentMutableMap<Object, Boolean> chm = new ConcurrentHashMap<Object, Boolean>();
 FJIterate.forEachBatchSize(collection, new Procedure()
 {
     public void value(Object object)
     {
         chm.put(object, Boolean.TRUE);
     }
 }, 100);
 

forEach

public static <T> void forEach(Iterable<T> iterable,
                               Procedure<? super T> procedure,
                               int batchSize,
                               ForkJoinPool executor)

forEach

public static <T,PT extends Procedure<? super T>> void forEach(Iterable<T> iterable,
                                                               PT procedure,
                                                               ForkJoinPool executor)

Iterate over the collection specified in parallel batches using default runtime parameter values and the specified executor. The Procedure used must be stateless, or use concurrent aware objects if they are to be shared.

Parameters:

executor - Use this executor for all execution.

See Also:

forEach(Iterable, Procedure)

forEach

public static <T,PT extends Procedure<? super T>> void forEach(Iterable<T> iterable,
                                                               PT procedure,
                                                               int minForkSize,
                                                               int taskCount)

Iterate over the collection specified in parallel batches using the specified minimum fork and task count sizes. The Procedure used must be stateless, or use concurrent aware objects if they are to be shared.

Parameters:

minForkSize - Only run in parallel if input collection is longer than this.

taskCount - The number of parallel tasks to submit to the executor.

See Also:

forEach(Iterable, Procedure)

forEach

public static <T,PT extends Procedure<? super T>> void forEach(Iterable<T> iterable,
                                                               PT procedure,
                                                               int minForkSize,
                                                               int taskCount,
                                                               ForkJoinPool executor)

forEach

public static <T,PT extends Procedure<? super T>> void forEach(Iterable<T> iterable,
                                                               ProcedureFactory<PT> procedureFactory,
                                                               Combiner<PT> combiner,
                                                               ForkJoinPool executor)

forEach

public static <T,PT extends Procedure<? super T>> void forEach(Iterable<T> iterable,
                                                               ProcedureFactory<PT> procedureFactory,
                                                               Combiner<PT> combiner)

forEach

public static <T,PT extends Procedure<? super T>> void forEach(Iterable<T> iterable,
                                                               ProcedureFactory<PT> procedureFactory,
                                                               Combiner<PT> combiner,
                                                               int batchSize)

Iterate over the collection specified in parallel batches using the default values for the task size. The ProcedureFactory can create stateful closures that will be collected and combined using the specified Combiner.

forEach

public static <T,PT extends Procedure<? super T>> void forEach(Iterable<T> iterable,
                                                               ProcedureFactory<PT> blockFactory,
                                                               Combiner<PT> combiner,
                                                               int batchSize,
                                                               ForkJoinPool executor)

forEach

public static <T,PT extends Procedure<? super T>> void forEach(Iterable<T> iterable,
                                                               ProcedureFactory<PT> procedureFactory,
                                                               Combiner<PT> combiner,
                                                               int minForkSize,
                                                               int taskCount)

Iterate over the collection specified in parallel batches using the default values for the task size. The ProcedureFactory can create stateful closures that will be collected and combined using the specified Combiner.

forEach

public static <T,PT extends Procedure<? super T>> void forEach(Iterable<T> iterable,
                                                               ProcedureFactory<PT> procedureFactory,
                                                               Combiner<PT> combiner,
                                                               int minForkSize,
                                                               int taskCount,
                                                               ForkJoinPool executor)

forEachInListOnExecutor

public static <T,PT extends Procedure<? super T>> void forEachInListOnExecutor(List<T> list,
                                                                               ProcedureFactory<PT> procedureFactory,
                                                                               Combiner<PT> combiner,
                                                                               int minForkSize,
                                                                               int taskCount,
                                                                               ForkJoinPool executor)

forEachInBatchWithExecutor

public static <T,PT extends Procedure<? super T>> void forEachInBatchWithExecutor(BatchIterable<T> batchIterable,
                                                                                  ProcedureFactory<PT> procedureFactory,
                                                                                  Combiner<PT> combiner,
                                                                                  int minForkSize,
                                                                                  int taskCount,
                                                                                  ForkJoinPool executor)

select

public static <T> Collection<T> select(Iterable<T> iterable,
                                       Predicate<? super T> predicate)

Same effect as Iterate.select(Iterable, Predicate), but executed in parallel batches.

Returns:

The selected elements. The Collection will be of the same type as the input (List or Set) and will be in the same order as the input (if it is an ordered collection).

See Also:

select(Iterable, Predicate, boolean)

select

public static <T> Collection<T> select(Iterable<T> iterable,
                                       Predicate<? super T> predicate,
                                       boolean allowReorderedResult)

Same effect as Iterate.select(Iterable, Predicate), but executed in parallel batches, and with a potentially reordered result.

Parameters:

allowReorderedResult - If the result can be in a different order. Allowing reordering may yield faster execution.

Returns:

The selected elements. The Collection will be of the same type (List or Set) as the input.

select

public static <T,R extends Collection<T>> R select(Iterable<T> iterable,
                                                   Predicate<? super T> predicate,
                                                   R target,
                                                   boolean allowReorderedResult)

Same effect as Iterate.select(Iterable, Predicate), but executed in parallel batches, and writing output into the specified collection.

Parameters:

target - Where to write the output.

allowReorderedResult - If the result can be in a different order. Allowing reordering may yield faster execution.

Returns:

The 'target' collection, with the selected elements added.

select

public static <T,R extends Collection<T>> R select(Iterable<T> iterable,
                                                   Predicate<? super T> predicate,
                                                   R target,
                                                   int batchSize,
                                                   ForkJoinPool executor,
                                                   boolean allowReorderedResult)

Same effect as Iterate.select(Iterable, Predicate), but executed in parallel batches, and writing output into the specified collection.

Parameters:

target - Where to write the output.

allowReorderedResult - If the result can be in a different order. Allowing reordering may yield faster execution.

Returns:

The 'target' collection, with the selected elements added.

reject

public static <T> Collection<T> reject(Iterable<T> iterable,
                                       Predicate<? super T> predicate)

Same effect as Iterate.reject(Iterable, Predicate), but executed in parallel batches.

Returns:

The rejected elements. The Collection will be of the same type as the input (List or Set) and will be in the same order as the input (if it is an ordered collection).

See Also:

reject(Iterable, Predicate, boolean)

reject

public static <T> Collection<T> reject(Iterable<T> iterable,
                                       Predicate<? super T> predicate,
                                       boolean allowReorderedResult)

Same effect as Iterate.reject(Iterable, Predicate), but executed in parallel batches, and with a potentially reordered result.

Parameters:

allowReorderedResult - If the result can be in a different order. Allowing reordering may yield faster execution.

Returns:

The rejected elements. The Collection will be of the same type (List or Set) as the input.

reject

public static <T,R extends Collection<T>> R reject(Iterable<T> iterable,
                                                   Predicate<? super T> predicate,
                                                   R target,
                                                   boolean allowReorderedResult)

Same effect as Iterate.reject(Iterable, Predicate), but executed in parallel batches, and writing output into the specified collection.

Parameters:

target - Where to write the output.

allowReorderedResult - If the result can be in a different order. Allowing reordering may yield faster execution.

Returns:

The 'target' collection, with the rejected elements added.

reject

public static <T,R extends Collection<T>> R reject(Iterable<T> iterable,
                                                   Predicate<? super T> predicate,
                                                   R target,
                                                   int batchSize,
                                                   ForkJoinPool executor,
                                                   boolean allowReorderedResult)

count

public static <T> int count(Iterable<T> iterable,
                            Predicate<? super T> predicate)

Same effect as Iterate.count(Iterable, Predicate), but executed in parallel batches.

Returns:

The number of elements which satisfy the Predicate.

count

public static <T> int count(Iterable<T> iterable,
                            Predicate<? super T> predicate,
                            int batchSize,
                            ForkJoinPool executor)

Same effect as Iterate.count(Iterable, Predicate), but executed in parallel batches.

Returns:

The number of elements which satisfy the Predicate.

collect

public static <T,V> Collection<V> collect(Iterable<T> iterable,
                                          Function<? super T,V> function)

Same effect as Iterate.collect(Iterable, Function), but executed in parallel batches.

Returns:

The collected elements. The Collection will be of the same type as the input (List or Set) and will be in the same order as the input (if it is an ordered collection).

See Also:

collect(Iterable, Function, boolean)

collect

public static <T,V> Collection<V> collect(Iterable<T> iterable,
                                          Function<? super T,V> function,
                                          boolean allowReorderedResult)

Same effect as Iterate.collect(Iterable, Function), but executed in parallel batches, and with potentially reordered result.

Parameters:

allowReorderedResult - If the result can be in a different order. Allowing reordering may yield faster execution.

Returns:

The collected elements. The Collection will be of the same type (List or Set) as the input.

collect

public static <T,V,R extends Collection<V>> R collect(Iterable<T> iterable,
                                                      Function<? super T,V> function,
                                                      R target,
                                                      boolean allowReorderedResult)

Same effect as Iterate.collect(Iterable, Function), but executed in parallel batches, and writing output into the specified collection.

Parameters:

target - Where to write the output.

allowReorderedResult - If the result can be in a different order. Allowing reordering may yield faster execution.

Returns:

The 'target' collection, with the collected elements added.

collect

public static <T,V,R extends Collection<V>> R collect(Iterable<T> iterable,
                                                      Function<? super T,V> function,
                                                      R target,
                                                      int batchSize,
                                                      ForkJoinPool executor,
                                                      boolean allowReorderedResult)

flatCollect

public static <T,V> Collection<V> flatCollect(Iterable<T> iterable,
                                              Function<? super T,? extends Iterable<V>> function)

flatCollect

public static <T,V> Collection<V> flatCollect(Iterable<T> iterable,
                                              Function<? super T,? extends Iterable<V>> function,
                                              boolean allowReorderedResult)

flatCollect

public static <T,V,R extends Collection<V>> R flatCollect(Iterable<T> iterable,
                                                          Function<? super T,? extends Iterable<V>> function,
                                                          R target,
                                                          boolean allowReorderedResult)

flatCollect

public static <T,V,R extends Collection<V>> R flatCollect(Iterable<T> iterable,
                                                          Function<? super T,? extends Iterable<V>> function,
                                                          R target,
                                                          int batchSize,
                                                          ForkJoinPool executor,
                                                          boolean allowReorderedResult)

collectIf

public static <T,V> Collection<V> collectIf(Iterable<T> iterable,
                                            Predicate<? super T> predicate,
                                            Function<? super T,V> function)

Same effect as Iterate.collectIf(Iterable, Predicate, Function), but executed in parallel batches.

Returns:

The collected elements. The Collection will be of the same type as the input (List or Set) and will be in the same order as the input (if it is an ordered collection).

See Also:

collectIf(Iterable, Predicate, Function, boolean)

collectIf

public static <T,V> Collection<V> collectIf(Iterable<T> iterable,
                                            Predicate<? super T> predicate,
                                            Function<? super T,V> function,
                                            boolean allowReorderedResult)

Same effect as Iterate.collectIf(Iterable, Predicate, Function), but executed in parallel batches, and with potentially reordered results.

Parameters:

allowReorderedResult - If the result can be in a different order. Allowing reordering may yield faster execution.

Returns:

The collected elements. The Collection will be of the same type as the input (List or Set)

collectIf

public static <T,V,R extends Collection<V>> R collectIf(Iterable<T> iterable,
                                                        Predicate<? super T> predicate,
                                                        Function<? super T,V> function,
                                                        R target,
                                                        boolean allowReorderedResult)

Same effect as Iterate.collectIf(Iterable, Predicate, Function), but executed in parallel batches, and writing output into the specified collection.

Parameters:

target - Where to write the output.

allowReorderedResult - If the result can be in a different order. Allowing reordering may yield faster execution.

Returns:

The 'target' collection, with the collected elements added.

collectIf

public static <T,V,R extends Collection<V>> R collectIf(Iterable<T> iterable,
                                                        Predicate<? super T> predicate,
                                                        Function<? super T,V> function,
                                                        R target,
                                                        int batchSize,
                                                        ForkJoinPool executor,
                                                        boolean allowReorderedResult)

aggregateBy

public static <T,K,V> MutableMap<K,V> aggregateBy(Iterable<T> iterable,
                                                  Function<? super T,? extends K> groupBy,
                                                  Function0<? extends V> zeroValueFactory,
                                                  Function2<? super V,? super T,? extends V> nonMutatingAggregator)

aggregateBy

public static <T,K,V,R extends MutableMapIterable<K,V>> R aggregateBy(Iterable<T> iterable,
                                                                      Function<? super T,? extends K> groupBy,
                                                                      Function0<? extends V> zeroValueFactory,
                                                                      Function2<? super V,? super T,? extends V> nonMutatingAggregator,
                                                                      R mutableMap)

aggregateBy

public static <T,K,V> MutableMap<K,V> aggregateBy(Iterable<T> iterable,
                                                  Function<? super T,? extends K> groupBy,
                                                  Function0<? extends V> zeroValueFactory,
                                                  Function2<? super V,? super T,? extends V> nonMutatingAggregator,
                                                  int batchSize)

aggregateBy

public static <T,K,V,R extends MutableMapIterable<K,V>> R aggregateBy(Iterable<T> iterable,
                                                                      Function<? super T,? extends K> groupBy,
                                                                      Function0<? extends V> zeroValueFactory,
                                                                      Function2<? super V,? super T,? extends V> nonMutatingAggregator,
                                                                      R mutableMap,
                                                                      int batchSize)

aggregateBy

public static <T,K,V> MutableMap<K,V> aggregateBy(Iterable<T> iterable,
                                                  Function<? super T,? extends K> groupBy,
                                                  Function0<? extends V> zeroValueFactory,
                                                  Function2<? super V,? super T,? extends V> nonMutatingAggregator,
                                                  int batchSize,
                                                  ForkJoinPool executor)

aggregateBy

public static <T,K,V,R extends MutableMapIterable<K,V>> R aggregateBy(Iterable<T> iterable,
                                                                      Function<? super T,? extends K> groupBy,
                                                                      Function0<? extends V> zeroValueFactory,
                                                                      Function2<? super V,? super T,? extends V> nonMutatingAggregator,
                                                                      R mutableMap,
                                                                      int batchSize,
                                                                      ForkJoinPool executor)

aggregateInPlaceBy

public static <T,K,V> MutableMap<K,V> aggregateInPlaceBy(Iterable<T> iterable,
                                                         Function<? super T,? extends K> groupBy,
                                                         Function0<? extends V> zeroValueFactory,
                                                         Procedure2<? super V,? super T> mutatingAggregator)

aggregateInPlaceBy

public static <T,K,V,R extends MutableMapIterable<K,V>> R aggregateInPlaceBy(Iterable<T> iterable,
                                                                             Function<? super T,? extends K> groupBy,
                                                                             Function0<? extends V> zeroValueFactory,
                                                                             Procedure2<? super V,? super T> mutatingAggregator,
                                                                             R mutableMap)

aggregateInPlaceBy

public static <T,K,V> MutableMap<K,V> aggregateInPlaceBy(Iterable<T> iterable,
                                                         Function<? super T,? extends K> groupBy,
                                                         Function0<? extends V> zeroValueFactory,
                                                         Procedure2<? super V,? super T> mutatingAggregator,
                                                         int batchSize)

aggregateInPlaceBy

public static <T,K,V,R extends MutableMapIterable<K,V>> R aggregateInPlaceBy(Iterable<T> iterable,
                                                                             Function<? super T,? extends K> groupBy,
                                                                             Function0<? extends V> zeroValueFactory,
                                                                             Procedure2<? super V,? super T> mutatingAggregator,
                                                                             R mutableMap,
                                                                             int batchSize)

aggregateInPlaceBy

public static <T,K,V> MutableMap<K,V> aggregateInPlaceBy(Iterable<T> iterable,
                                                         Function<? super T,? extends K> groupBy,
                                                         Function0<? extends V> zeroValueFactory,
                                                         Procedure2<? super V,? super T> mutatingAggregator,
                                                         int batchSize,
                                                         ForkJoinPool executor)

aggregateInPlaceBy

public static <T,K,V,R extends MutableMapIterable<K,V>> R aggregateInPlaceBy(Iterable<T> iterable,
                                                                             Function<? super T,? extends K> groupBy,
                                                                             Function0<? extends V> zeroValueFactory,
                                                                             Procedure2<? super V,? super T> mutatingAggregator,
                                                                             R mutableMap,
                                                                             int batchSize,
                                                                             ForkJoinPool executor)

groupBy

public static <K,V> MutableMultimap<K,V> groupBy(Iterable<V> iterable,
                                                 Function<? super V,? extends K> function)

Same effect as Iterate.groupBy(Iterable, Function), but executed in parallel batches, and writing output into a SynchronizedPutFastListMultimap.

groupBy

public static <K,V,R extends MutableMultimap<K,V>> MutableMultimap<K,V> groupBy(Iterable<V> iterable,
                                                                                Function<? super V,? extends K> function,
                                                                                R concurrentMultimap)

Same effect as Iterate.groupBy(Iterable, Function), but executed in parallel batches, and writing output into a SynchronizedPutFastListMultimap.

groupBy

public static <K,V,R extends MutableMultimap<K,V>> MutableMultimap<K,V> groupBy(Iterable<V> iterable,
                                                                                Function<? super V,? extends K> function,
                                                                                R concurrentMultimap,
                                                                                int batchSize)

Same effect as Iterate.groupBy(Iterable, Function), but executed in parallel batches, and writing output into a SynchronizedPutFastListMultimap.

groupBy

public static <K,V> MutableMultimap<K,V> groupBy(Iterable<V> iterable,
                                                 Function<? super V,? extends K> function,
                                                 int batchSize)

Same effect as Iterate.groupBy(Iterable, Function), but executed in parallel batches, and writing output into a SynchronizedPutFastListMultimap.

groupBy

public static <K,V> MutableMultimap<K,V> groupBy(Iterable<V> iterable,
                                                 Function<? super V,? extends K> function,
                                                 int batchSize,
                                                 ForkJoinPool executor)

Same effect as Iterate.groupBy(Iterable, Function), but executed in parallel batches, and writing output into a SynchronizedPutFastListMultimap.

groupBy

public static <K,V,R extends MutableMultimap<K,V>> MutableMultimap<K,V> groupBy(Iterable<V> iterable,
                                                                                Function<? super V,? extends K> function,
                                                                                R concurrentMultimap,
                                                                                int batchSize,
                                                                                ForkJoinPool executor)

Same effect as Iterate.groupBy(Iterable, Function), but executed in parallel batches, and writing output into a SynchronizedPutFastListMultimap.