Schema: robos:Feature

Formal W3C SHACL constraint shape and OSLC JSON-LD specification for robos:Feature in the services package store.

Table of contents

1. Specification Metadata
2. Upstream Schema Basis (Refers From) & Global Standards Provenance
3. Entity Relationship & Schema Context
4. Property Constraints & SHACL Rules
5. Canonical OSLC JSON-LD Example
6. Programmatic SHACL Validation

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Specification Metadata

• RDF / OWL Class: robos:Feature
• Aliases / Target Classes: robos:Feature, robos:ProductFeature
• SHACL Shape ID: urn:robos:shape:FeatureShape
• Governing Package: Services & Contracts (robos.services) (services)
• Namespace: robos.services
• Schema.org Classification: https://schema.org/DigitalDocument
• Domain De Facto Standard: http://open-services.net/ns/rm#Requirement
• Upstream Schema Basis (Refers From): http://open-services.net/ns/rm#Requirement

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Upstream Schema Basis (Refers From) & Global Standards Provenance

This RobOS schema is modeled after and directly aligns with two levels of global standards:

• Universal Schema.org Class: https://schema.org/DigitalDocument (100% interoperability with search engines, web indexers, and general AI reasoning)
• Specialized Domain Standard: http://open-services.net/ns/rm#Requirement (de facto standard for domain-specific ALM, BDD, or infrastructure operations)
• Canonical Reference: http://open-services.net/ns/rm#Requirement
• Agent Guidelines: When autonomous agents generate, expand, or validate instances of robos:Feature, they MUST adhere to and base their output on this referred schema object and universal Schema.org parent class, extending it with RobOS SDLC properties.

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Entity Relationship & Schema Context

Feature robos:Feature

Governed by W3C SHACL shape urn:robos:shape:FeatureShape within the Services & Contracts (robos.services) (robos.services) package store.

dcterms:title

---

Property Constraints & SHACL Rules

Property Path	Name	Multiplicity	Data Type	Constraint Rule / Validation Message
dcterms:title	Title / Display Name	1..*	xsd:string	Feature must have a title.

---

Canonical OSLC JSON-LD Example

{
  "@id": "urn:robos:services:feature-sample",
  "@type": [
    "robos:Feature",
    "robos:ProductFeature",
    "schema:DigitalDocument",
    "oslc:Resource"
  ],
  "dcterms:title": "Sample Feature",
  "dcterms:description": "Canonical reference instance for robos:Feature.",
  "robos:package": "services",
  "robos:namespace": "robos.services",
  "robos:schemaOrgType": "https://schema.org/DigitalDocument",
  "robos:domainStandard": "http://open-services.net/ns/rm#Requirement",
  "robos:refersFrom": "http://open-services.net/ns/rm#Requirement"
}

---

Programmatic SHACL Validation

const { SHACLValidator } = require('/usr/local/share/robos/robos-graph/lib/shacl-validator');
const { OSLCGraphParser, OSLC_CONTEXT } = require('/usr/local/share/robos/robos-graph/lib/oslc-parser');

const validator = new SHACLValidator();
const result = validator.validateGraph(new OSLCGraphParser({
  "@context": OSLC_CONTEXT,
  "robos:nodes": [
    {
        "@id": "urn:robos:services:feature-sample",
        "@type": [
            "robos:Feature",
            "robos:ProductFeature",
            "schema:DigitalDocument",
            "oslc:Resource"
        ],
        "dcterms:title": "Sample Feature",
        "dcterms:description": "Canonical reference instance for robos:Feature.",
        "robos:package": "services",
        "robos:namespace": "robos.services",
        "robos:schemaOrgType": "https://schema.org/DigitalDocument",
        "robos:domainStandard": "http://open-services.net/ns/rm#Requirement",
        "robos:refersFrom": "http://open-services.net/ns/rm#Requirement"
    }
  ],
}));

console.log("Conforms:", result.conforms); // Expected: true