io.spine.core

Class Versions

java.lang.Object

io.spine.core.Versions

public final class Versions
extends java.lang.Object

Utilities for working with Version.

Method Summary

Modifier and Type	Method and Description
static void	checkIsIncrement(io.spine.core.Version currentVersion, io.spine.core.Version newVersion) Ensures that an entity transits into a new version with a greater number.
static io.spine.core.Version	increment(io.spine.core.Version version) Creates a new Version with the number increased by one and the timestamp of the current system time.
static io.spine.core.Version	newVersion(int number, com.google.protobuf.Timestamp timestamp) Creates a new instance with the passed number and the timestamp.
static io.spine.core.Version	zero() Creates a new instance with the zero number and current system time.

Methods inherited from class java.lang.Object

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

Method Detail

zero

public static io.spine.core.Version zero()

Creates a new instance with the zero number and current system time.

newVersion

public static io.spine.core.Version newVersion(int number,
                                               com.google.protobuf.Timestamp timestamp)

Creates a new instance with the passed number and the timestamp.

increment

public static io.spine.core.Version increment(io.spine.core.Version version)

Creates a new Version with the number increased by one and the timestamp of the current system time.

checkIsIncrement

public static void checkIsIncrement(io.spine.core.Version currentVersion,
                                    io.spine.core.Version newVersion)

Ensures that an entity transits into a new version with a greater number.

Parameters:

currentVersion - the current version of an entity

newVersion - the candidate for the new version of the entity

Throws:

java.lang.IllegalArgumentException - if newVersion has less or equal number with the currentVersion