org.infinispan.stream

Class CacheCollectors

java.lang.Object

org.infinispan.stream.CacheCollectors

public class CacheCollectors
extends java.lang.Object

Helper class designed to be used to create a serializable Collector for use with CacheStream.collect(Collector) from a supplier of a collector. The problem is that the standard Collectors class doesn't provide Serializable Collectors and no way to extend their functionality, so this class is used instead.

Method Summary

Modifier and Type	Method and Description
static <T,R> java.util.stream.Collector<T,?,R>	collector(java.util.function.Supplier<java.util.stream.Collector<T,?,R>> supplier) Similar to serializableCollector(SerializableSupplier) except that the supplier provided must be marshable through ISPN marshalling techniques.
static <T,R> java.util.stream.Collector<T,?,R>	serializableCollector(SerializableSupplier<java.util.stream.Collector<T,?,R>> supplier) Creates a collector that is serializable and will upon usage create a collector using the serializable supplier provided by the user.

Methods inherited from class java.lang.Object

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

Method Detail

serializableCollector

public static <T,R> java.util.stream.Collector<T,?,R> serializableCollector(SerializableSupplier<java.util.stream.Collector<T,?,R>> supplier)

Creates a collector that is serializable and will upon usage create a collector using the serializable supplier provided by the user.

Type Parameters:

T - The input type of the collector

R - The resulting type of the collector

Parameters:

supplier - The supplier to crate the collector that is specifically serializable

Returns:

the collector which is serializable

See Also:

SerializableSupplier

collector

public static <T,R> java.util.stream.Collector<T,?,R> collector(java.util.function.Supplier<java.util.stream.Collector<T,?,R>> supplier)

Similar to serializableCollector(SerializableSupplier) except that the supplier provided must be marshable through ISPN marshalling techniques. Note this is not detected until runtime.

Type Parameters:

T - The input type of the collector

R - The resulting type of the collector

Parameters:

supplier - The marshallable supplier of collectors

Returns:

the collector which is serializable

See Also:

Externalizer, AdvancedExternalizer