Package org.axonframework.eventsourcing.eventstore

Class AggregateSequenceNumberPosition

java.lang.Object

org.axonframework.eventsourcing.eventstore.AggregateSequenceNumberPosition

All Implemented Interfaces:

Position

public final class AggregateSequenceNumberPosition
extends Object
implements Position

An implementation of Position based on aggregate sequence numbers.

Since:

5.0.0

Author:

John Hendrikx

Field Summary

Fields inherited from interface org.axonframework.eventsourcing.eventstore.Position

START

Method Summary

Modifier and Type	Method	Description
boolean	equals(Object o)
int	hashCode()
Position	min(Position other)	Returns the smallest of the two positions.
static long	toSequenceNumber(Position position)	Converts the given position to a sequence number, if possible.
String	toString()

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Method Details

toSequenceNumber

public static long toSequenceNumber(@Nonnull
 Position position)

Converts the given position to a sequence number, if possible.

Parameters:

position - A position, cannot be null.

Returns:

A sequence number.

Throws:

NullPointerException - When any argument is null.

IllegalArgumentException - When the given position could not be converted.

min

@Nonnull
public Position min(@Nonnull
 Position other)

Description copied from interface: Position

Returns the smallest of the two positions. If one of the positions is Position.START, this function will always return this value. Implementors must ensure this operation is symmetric, and so should always return Position.START when called with it.

Specified by:

min in interface Position

Parameters:

other - Another position, cannot be null.

Returns:

The smallest of the two positions, never null.

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

toString

public String toString()

Overrides:

toString in class Object