AbstractCollector (Java API Reference for Oracle® Coherence Community Edition)

java.lang.Object
- com.oracle.coherence.concurrent.executor.AbstractCollector<T,R>

Type Parameters:

T - the type of input elements to the reduction operation

R - the result type of the reduction operation

All Implemented Interfaces:

Task.Collector<T,List<T>,R>, com.tangosol.io.ExternalizableLite, com.tangosol.io.pof.PortableObject, Serializable

Direct Known Subclasses:

TaskCollectors.CountCollector, TaskCollectors.LastOfCollector
```
public abstract class AbstractCollector<T,R>
extends Object
implements Task.Collector<T,List<T>,R>, com.tangosol.io.pof.PortableObject
```
An abstract Task.Collector.

Since:

21.12

Author:

bo

See Also:

Serialized Form

Constructor Summary

Constructors
Constructor Description

AbstractCollector()

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`BiConsumer<List<T>,T>`	`accumulator()`	A function that folds `Task` results into a mutable result container.
`com.tangosol.util.function.Remote.Predicate<List<T>>`	`finishable()`	A `Remote.Predicate` to determine if a result container can be finished early avoiding further accumulation of results using the container.
`Supplier<List<T>>`	`supplier()`	A function that creates and returns a new mutable result container.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface com.tangosol.io.ExternalizableLite
readExternal, writeExternal

Methods inherited from interface com.tangosol.io.pof.PortableObject
readExternal, writeExternal

Methods inherited from interface com.oracle.coherence.concurrent.executor.Task.Collector
finisher

- Constructor Detail
  - AbstractCollector
```
public AbstractCollector()
```
- Method Detail
  - accumulator
```
public BiConsumer<List<T>,T> accumulator()
```
    Description copied from interface: Task.Collector
    
    A function that folds Task results into a mutable result container.
    
    Specified by:
    
    accumulator in interface Task.Collector<T,List<T>,R>
    
    Returns:
    
    a function that folds Task results into a mutable result container
  - finishable
```
public com.tangosol.util.function.Remote.Predicate<List<T>> finishable()
```
    Description copied from interface: Task.Collector
    
    A Remote.Predicate to determine if a result container can be finished early avoiding further accumulation of results using the container.
    Should there be no further results to accumulate, finishing the result container with the Task.Collector.finisher() will occur regardless of the result returned by the Remote.Predicate.
    
    Specified by:
    
    finishable in interface Task.Collector<T,List<T>,R>
    
    Returns:
    
    a Remote.Predicate
  - supplier
```
public Supplier<List<T>> supplier()
```
    Description copied from interface: Task.Collector
    
    A function that creates and returns a new mutable result container.
    
    Specified by:
    
    supplier in interface Task.Collector<T,List<T>,R>
    
    Returns:
    
    a function which returns a new mutable result container