Struct SchemaSubject 

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

Value Object: SchemaSubject

Represents the subject/topic that a schema applies to. Subjects typically correspond to event types (e.g., “user.created”, “order.placed”).

Domain Rules:

• Cannot be empty
• Must be between 1 and 256 characters
• Must be lowercase with dots, underscores, or hyphens
• Case-sensitive
• Immutable once created
• Must be unique within a schema registry

This is a Value Object:

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

Implementations

impl SchemaSubject

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

Create a new SchemaSubject with validation

Errors

Returns error if:

• Subject is empty
• Subject is longer than 256 characters
• Subject contains invalid characters

Examples

use allsource_core::domain::value_objects::SchemaSubject;

let subject = SchemaSubject::new("user.created".to_string()).unwrap();
assert_eq!(subject.as_str(), "user.created");

pub fn as_str(&self) -> &str

Get the string value

pub fn into_inner(self) -> String

Get the inner String (consumes self)

pub fn namespace(&self) -> Option<&str>

Get the namespace (everything before the first dot)

Examples

use allsource_core::domain::value_objects::SchemaSubject;

let subject = SchemaSubject::new("user.created".to_string()).unwrap();
assert_eq!(subject.namespace(), Some("user"));

let subject = SchemaSubject::new("simple".to_string()).unwrap();
assert_eq!(subject.namespace(), None);

pub fn action(&self) -> Option<&str>

Get the action/event name (everything after the last dot)

Examples

use allsource_core::domain::value_objects::SchemaSubject;

let subject = SchemaSubject::new("user.created".to_string()).unwrap();
assert_eq!(subject.action(), Some("created"));

let subject = SchemaSubject::new("user.profile.updated".to_string()).unwrap();
assert_eq!(subject.action(), Some("updated"));

pub fn is_in_namespace(&self, namespace: &str) -> bool

Check if this subject is in a specific namespace

Examples

use allsource_core::domain::value_objects::SchemaSubject;

let subject = SchemaSubject::new("user.created".to_string()).unwrap();
assert!(subject.is_in_namespace("user"));
assert!(!subject.is_in_namespace("order"));

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

Check if this subject starts with a prefix

pub fn matches_pattern(&self, pattern: &str) -> bool

Check if this subject matches an event type pattern

Supports wildcards: * matches any single segment, ** matches any number of segments

Examples

use allsource_core::domain::value_objects::SchemaSubject;

let subject = SchemaSubject::new("user.created".to_string()).unwrap();
assert!(subject.matches_pattern("user.created"));
assert!(subject.matches_pattern("user.*"));
assert!(subject.matches_pattern("**"));

Trait Implementations

impl AsRef<str> for SchemaSubject

fn as_ref(&self) -> &str

Converts this type into a shared reference of the (usually inferred) input type.

impl Clone for SchemaSubject

fn clone(&self) -> SchemaSubject

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SchemaSubject

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for SchemaSubject

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Display for SchemaSubject

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

Formats the value using the given formatter.

impl Hash for SchemaSubject

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 SchemaSubject

fn eq(&self, other: &SchemaSubject) -> 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 SchemaSubject

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 SchemaSubject

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 SchemaSubject

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 SchemaSubject

impl StructuralPartialEq for SchemaSubject