Struct RuleStore 

pub struct RuleStore { /* private fields */ }

A named collection of RuleDefinition objects loaded from disk.

Rules can be loaded from a JSON array file or a YAML array file. After loading, individual rules are retrieved by name.

JSON file format

[
  { "name": "rule-a", "logic": { "...": "..." } },
  { "name": "rule-b", "version": "1.0.0", "logic": { "...": "..." } }
]

YAML file format

- name: rule-a
  logic:
    ">": [{"var": "score"}, 700]

Implementations

impl RuleStore

pub fn new() -> Self

Create an empty rule store.

pub fn from_json_file(path: impl AsRef<Path>) -> Result<Self, RuleEngineError>

Load rules from a JSON file (array of RuleDefinition objects).

pub fn from_json_str(json: &str) -> Result<Self, RuleEngineError>

Load rules from a JSON string (array of RuleDefinition objects).

pub fn get(&self, name: &str) -> Option<&RuleDefinition>

Retrieve a rule by name.

pub fn all(&self) -> &[RuleDefinition]

All rules in the store.

pub fn len(&self) -> usize

Number of rules in the store.

pub fn is_empty(&self) -> bool

Returns true if the store contains no rules.

pub fn insert(&mut self, rule: RuleDefinition)

Add a rule to the store at runtime.

Trait Implementations

impl Debug for RuleStore

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

Formats the value using the given formatter.

impl Default for RuleStore

fn default() -> RuleStore

Returns the “default value” for a type.