Schema: robos:ContextSource

Formal W3C SHACL constraint shape and OSLC JSON-LD specification for robos:ContextSource in the core-platform 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:ContextSource
• Aliases / Target Classes: robos:ContextSource
• SHACL Shape ID: urn:robos:shape:ContextSourceShape
• Governing Package: Core Platform (robos.core) (core-platform)
• Namespace: robos.platform
• Schema.org Classification: https://schema.org/DataFeed
• Domain De Facto Standard: https://schema.org/DataFeed
• Upstream Schema Basis (Refers From): https://schema.org/DataFeed

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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/DataFeed (100% interoperability with search engines, web indexers, and general AI reasoning)
• Specialized Domain Standard: https://schema.org/DataFeed (de facto standard for domain-specific ALM, BDD, or infrastructure operations)
• Canonical Reference: https://schema.org/DataFeed
• Agent Guidelines: When autonomous agents generate, expand, or validate instances of robos:ContextSource, 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

Context Source robos:ContextSource

Governed by W3C SHACL shape urn:robos:shape:ContextSourceShape within the Core Platform (robos.core) (robos.platform) package store.

dcterms:title robos:sourceType robos:location

---

Property Constraints & SHACL Rules

Property Path	Name	Multiplicity	Data Type	Constraint Rule / Validation Message
dcterms:title	Title / Display Name	1..*	xsd:string	Context Source must have a title.
robos:sourceType	sourceType	1..*	xsd:string	Context Source must declare source type (file, folder, url, github, repo, ticket).
robos:location	location	1..*	xsd:string	Context Source must specify location path, URL, or repository identifier.

---

Canonical OSLC JSON-LD Example

{
  "@id": "urn:robos:core-platform:context-source-sample",
  "@type": [
    "robos:ContextSource",
    "schema:DataFeed",
    "oslc:Resource"
  ],
  "dcterms:title": "Sample Context Source",
  "dcterms:description": "Canonical reference instance for robos:ContextSource.",
  "robos:package": "core-platform",
  "robos:namespace": "robos.platform",
  "robos:schemaOrgType": "https://schema.org/DataFeed",
  "robos:domainStandard": "https://schema.org/DataFeed",
  "robos:refersFrom": "https://schema.org/DataFeed"
}

---

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:core-platform:context-source-sample",
        "@type": [
            "robos:ContextSource",
            "schema:DataFeed",
            "oslc:Resource"
        ],
        "dcterms:title": "Sample Context Source",
        "dcterms:description": "Canonical reference instance for robos:ContextSource.",
        "robos:package": "core-platform",
        "robos:namespace": "robos.platform",
        "robos:schemaOrgType": "https://schema.org/DataFeed",
        "robos:domainStandard": "https://schema.org/DataFeed",
        "robos:refersFrom": "https://schema.org/DataFeed"
    }
  ],
}));

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