Struct EntityId 

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

Value Object: EntityId

Represents a unique identifier for an entity in the event sourcing system. Entities are the subjects of events (e.g., user-123, order-456, product-789).

Domain Rules:

• Cannot be empty
• Must be between 1 and 128 characters
• Flexible format (allows any printable characters except whitespace)
• Case-sensitive
• Immutable once created

This is a Value Object:

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

Implementations

impl EntityId

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

Create a new EntityId with validation

Errors

Returns error if:

• ID is empty
• ID is longer than 128 characters
• ID contains only whitespace
• ID contains control characters

Examples

use allsource_core::domain::value_objects::EntityId;

let entity_id = EntityId::new("user-123".to_string()).unwrap();
assert_eq!(entity_id.as_str(), "user-123");

let entity_id = EntityId::new("order_ABC-456".to_string()).unwrap();
assert_eq!(entity_id.as_str(), "order_ABC-456");

pub fn as_str(&self) -> &str

Get the string value

pub fn into_inner(self) -> String

Get the inner String (consumes self)

pub fn starts_with(&self, prefix: &str) -> bool

Check if this entity ID starts with a specific prefix

Examples

use allsource_core::domain::value_objects::EntityId;

let entity_id = EntityId::new("user-123".to_string()).unwrap();
assert!(entity_id.starts_with("user-"));
assert!(!entity_id.starts_with("order-"));

pub fn ends_with(&self, suffix: &str) -> bool

Check if this entity ID ends with a specific suffix

Examples

use allsource_core::domain::value_objects::EntityId;

let entity_id = EntityId::new("user-123".to_string()).unwrap();
assert!(entity_id.ends_with("-123"));
assert!(!entity_id.ends_with("-456"));

pub fn prefix(&self, delimiter: char) -> Option<&str>

Extract a prefix before a delimiter (if present)

Examples

use allsource_core::domain::value_objects::EntityId;

let entity_id = EntityId::new("user-123".to_string()).unwrap();
assert_eq!(entity_id.prefix('-'), Some("user"));

let entity_id = EntityId::new("simple".to_string()).unwrap();
assert_eq!(entity_id.prefix('-'), None);

Trait Implementations

impl Clone for EntityId

fn clone(&self) -> EntityId

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for EntityId

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for EntityId

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Display for EntityId

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

Formats the value using the given formatter.

impl Hash for EntityId

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 PartialEq for EntityId

fn eq(&self, other: &EntityId) -> 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 Serialize for EntityId

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl TryFrom<&str> for EntityId

type Error = AllSourceError

The type returned in the event of a conversion error.

fn try_from(value: &str) -> Result<Self>

Performs the conversion.

impl TryFrom<String> for EntityId

type Error = AllSourceError

The type returned in the event of a conversion error.

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

Performs the conversion.

impl Eq for EntityId

impl StructuralPartialEq for EntityId