Struct Version 

pub struct Version(/* private fields */);

Value Object: Version

Represents a version number for entities like events, schemas, or projections.

Domain Rules:

• Must be a positive integer (>= 1)
• Immutable once created
• Sequential within a stream

This is a Value Object:

• Defined by its value, not identity
• Immutable
• Self-validating
• Compared by value equality

Implementations

impl Version

pub const FIRST: Version

The first version number (always 1)

pub fn new(value: u64) -> Result<Self>

Create a new Version with validation

Errors

Returns error if version is 0

Examples

use allsource_core::domain::value_objects::Version;

let version = Version::new(1).unwrap();
assert_eq!(version.as_u64(), 1);

pub fn first() -> Self

Create the first version

Examples

use allsource_core::domain::value_objects::Version;

let version = Version::first();
assert_eq!(version.as_u64(), 1);
assert!(version.is_first());

pub fn as_u64(&self) -> u64

Get the version value as u64

pub fn as_i64(&self) -> i64

Get the version value as i64 (for compatibility)

pub fn as_u32(&self) -> u32

Get the version value as u32 (for compatibility)

pub fn is_first(&self) -> bool

Check if this is the first version

Examples

use allsource_core::domain::value_objects::Version;

let v1 = Version::first();
let v2 = Version::new(2).unwrap();

assert!(v1.is_first());
assert!(!v2.is_first());

pub fn next(&self) -> Self

Get the next version

Examples

use allsource_core::domain::value_objects::Version;

let v1 = Version::first();
let v2 = v1.next();

assert_eq!(v2.as_u64(), 2);

pub fn previous(&self) -> Option<Self>

Get the previous version, if possible

Returns None if this is the first version.

Examples

use allsource_core::domain::value_objects::Version;

let v2 = Version::new(2).unwrap();
let v1 = v2.previous();

assert_eq!(v1, Some(Version::first()));

let first = Version::first();
assert_eq!(first.previous(), None);

pub fn is_immediately_after(&self, other: &Version) -> bool

Check if this version is immediately after another

Examples

use allsource_core::domain::value_objects::Version;

let v1 = Version::first();
let v2 = Version::new(2).unwrap();
let v3 = Version::new(3).unwrap();

assert!(v2.is_immediately_after(&v1));
assert!(!v3.is_immediately_after(&v1));

Trait Implementations

impl Clone for Version

fn clone(&self) -> Version

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Version

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for Version

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Display for Version

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl From<Version> for i64

fn from(version: Version) -> Self

Converts to this type from the input type.

impl From<Version> for u32

fn from(version: Version) -> Self

Converts to this type from the input type.

impl From<Version> for u64

fn from(version: Version) -> Self

Converts to this type from the input type.

impl Hash for Version

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Ord for Version

fn cmp(&self, other: &Version) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for Version

fn eq(&self, other: &Version) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl PartialOrd for Version

fn partial_cmp(&self, other: &Version) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl Serialize for Version

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl TryFrom<i64> for Version

type Error = AllSourceError

The type returned in the event of a conversion error.

fn try_from(value: i64) -> Result<Self>

Performs the conversion.

impl TryFrom<u32> for Version

type Error = AllSourceError

The type returned in the event of a conversion error.

fn try_from(value: u32) -> Result<Self>

Performs the conversion.

impl TryFrom<u64> for Version

type Error = AllSourceError

The type returned in the event of a conversion error.

fn try_from(value: u64) -> Result<Self>

Performs the conversion.

impl Copy for Version

impl Eq for Version

impl StructuralPartialEq for Version