Package com.landawn.abacus.util.stream

Enum Class BaseStream.Splitor

java.lang.Object

java.lang.Enum<BaseStream.Splitor>

com.landawn.abacus.util.stream.BaseStream.Splitor

All Implemented Interfaces:

Serializable, Comparable<BaseStream.Splitor>, Constable

Enclosing interface:

BaseStream<T,A,P,C,PL,OT,IT,ITER extends Iterator<T>,S extends BaseStream<T,A,P,C,PL,OT,IT,ITER,S>>

public static enum BaseStream.Splitor
extends Enum<BaseStream.Splitor>

Generally, or most of time, elements will be fetched and processed by parallel threads one by one.

 synchronized (elements) {
    if (elements.hasNext()) {
       next = elements.next();
    }
 }

 // Do something with next...
 

Splitor.ARRAY only works when stream elements are stored in an array. The array will be equally split into slices based on thread number for each thread:

 int sliceSize = (toIndex - fromIndex) / threadNum + ((toIndex - fromIndex) % threadNum == 0 ? 0 : 1);
 

If stream elements are not stored in an array, Splitor.ARRAY will just works as same as how Splitor.ITERATOR works.

If you want to customize the buffer size for each thread, try stream.split(bufferSize) or stream.splitToList(bufferSize)

 stream.split(bufferSize).parallel(...).map/filter/flatMap...(sliceStream -> // do whatever you want to do);
 stream.splitToList(bufferSize).parallel(...).map/filter/flatMap...(sliceList -> // do whatever you want to do);
 // Or
 stream.sps(maxThreadNum, bufferSize, op)
 

See Also:

• BaseStream.sps(Function)
• BaseStream.sps(int, Function)
• Stream.sps(int, int, Function)

Nested Class Summary

Nested classes/interfaces inherited from class java.lang.Enum

Enum.EnumDesc<E extends Enum<E>>

Enum Constant Summary

Enum Constants

Enum Constant	Description
ARRAY	Splitor.ARRAY only works when stream elements are stored in an array.
ITERATOR	Elements will be fetched and processed by parallel threads one by one.

Method Summary

Modifier and Type	Method	Description
static BaseStream.Splitor	valueOf(String name)	Returns the enum constant of this class with the specified name.
static BaseStream.Splitor[]	values()	Returns an array containing the constants of this enum class, in the order they are declared.

Methods inherited from class java.lang.Enum

compareTo, describeConstable, equals, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Details

ARRAY

public static final BaseStream.Splitor ARRAY

Splitor.ARRAY only works when stream elements are stored in an array. The array will be equally split into slices based on thread number for each thread:

 int sliceSize = (toIndex - fromIndex) / threadNum + ((toIndex - fromIndex) % threadNum == 0 ? 0 : 1);
 

If stream elements are not stored in an array, Splitor.ARRAY will just works as same as how Splitor.ITERATOR works.

See Also:

• BaseStream.sps(Function)
• BaseStream.sps(int, Function)
• Stream.sps(int, int, Function)

ITERATOR

public static final BaseStream.Splitor ITERATOR

Elements will be fetched and processed by parallel threads one by one.

 synchronized (elements) {
    if (elements.hasNext()) {
       next = elements.next();
    }
 }

 // Do something with next...
 

See Also:

• BaseStream.sps(Function)
• BaseStream.sps(int, Function)
• Stream.sps(int, int, Function)

Method Details

values

public static BaseStream.Splitor[] values()

Returns an array containing the constants of this enum class, in the order they are declared.

Returns:

an array containing the constants of this enum class, in the order they are declared

valueOf

public static BaseStream.Splitor valueOf(String name)

Returns the enum constant of this class with the specified name. The string must match exactly an identifier used to declare an enum constant in this class. (Extraneous whitespace characters are not permitted.)

Parameters:

name - the name of the enum constant to be returned.

Returns:

the enum constant with the specified name

Throws:

IllegalArgumentException - if this enum class has no constant with the specified name

NullPointerException - if the argument is null