Rulewright.Serialization 0.3.0

Rulewright.Serialization

JSON-to-domain mapping, structural schema validation, and canonical rule hashing for Rulewright.

No JSON library dependency — parsing is abstracted behind IRuleJsonReader, which the adapter packages implement.

Install

dotnet add package Rulewright.Serialization

You almost certainly want Rulewright instead — it includes this package. Install Rulewright.Serialization directly when you want to validate, hash, or inspect rule documents without evaluating them: a CI check on a rules repository, a rule-authoring UI, or a schema-driven editor.

Validate a document

RuleSetValidator returns every error with a JSON pointer, so an editor can put a squiggle in the right place rather than reporting "invalid".

using Rulewright.Serialization;
using Rulewright.Json.SystemText;

RuleJsonValue document = new SystemTextJsonReader().Read(json);
RuleSetValidationResult result = RuleSetValidator.Validate(document);

foreach (RuleValidationError error in result.Errors)
    Console.WriteLine($"{error.Path}: {error.Message}");
    // /rules/0/condition/value: 'value' must be a string for operator 'Contains'.

Enumerate the authoring vocabulary

RuleSchemaCatalog exposes the closed vocabulary as structured metadata — condition operators with their value kinds, logical combinators with child arity, expression operators with operand arity, and action types — derived from the same sources the parser and validator use, so a builder UI cannot drift from what the engine accepts.

foreach (ConditionOperatorInfo op in RuleSchemaCatalog.ConditionOperators)
    Console.WriteLine($"{op.JsonName} takes {op.ValueKind}");

Hash a rule

RuleHasher renders a rule's compilation-relevant content — the condition tree and actions — in canonical form and SHA-256s it. It is insensitive to whitespace, key order, and the layout, id, description, priority, and enabled members, so canvas edits and metadata changes never invalidate a cache while any semantic change always does. This is the engine's compiled-delegate cache key, and it works equally well as an "did this rule really change?" check in review tooling.

string hash = RuleHasher.ComputeHash(rule);
string canonical = RuleHasher.GetCanonicalForm(rule);   // for diagnostics

Parse

RuleSetParser.Parse maps a validated document to the immutable RuleSet model, expanding decisionTable documents into ordinary rules on the way.

Requirements

.NET Framework 4.8, .NET Standard 2.0, .NET 8.0 or .NET 10.0.

License

MIT.