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Packageaehrc.syndication
Resource TypeImplementationGuide
IdImplementationGuide-aehrc.syndication.json
FHIR VersionR4
Sourcehttps://build.fhir.org/ig/FHIR/fhir-syndication-ig/index.html
URLhttps://ontoserver.csiro.au/syndication/ImplementationGuide/aehrc.syndication
Version0.1.0
Statusdraft
Date2026-06-29T05:00:28+00:00
NameTerminologySyndicationFeed
TitleTerminology Syndication Feed Implementation Guide
Realmuv
DescriptionSpecifies the Atom-based terminology syndication feed format. Defines the feed and entry shapes, the meaning of each field, the cross-field constraints, the controlled vocabularies for category schemes, and the three extension namespaces used: NCTS Atom Syndication Format (ASF) at `http://ns.electronichealth.net.au/ncts/syndication/asf/extensions/1.0.0`, the SNOMED CT extension namespace at `http://snomed.info/syndication/sct-extension/1.0.0`, and the Ontoserver syndication namespace at `http://ontoserver.csiro.au/syndication/`.

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Narrative

Note: links and images are rebased to the (stated) source

Generated Narrative: ImplementationGuide aehrc.syndication

Language: en

TerminologySyndicationFeed

The official URL for this implementation guide is:

https://ontoserver.csiro.au/syndication/ImplementationGuide/aehrc.syndication

Specifies the Atom-based terminology syndication feed format. Defines the feed and entry shapes, the meaning of each field, the cross-field constraints, the controlled vocabularies for category schemes, and the three extension namespaces used: NCTS Atom Syndication Format (ASF) at http://ns.electronichealth.net.au/ncts/syndication/asf/extensions/1.0.0, the SNOMED CT extension namespace at http://snomed.info/syndication/sct-extension/1.0.0, and the Ontoserver syndication namespace at http://ontoserver.csiro.au/syndication/.


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        },
        "name": "Ontoserver RF2 Binary Index Category",
        "description": "The single category term used by syndication entries that publish a\npre-built **Ontoserver RF2 binary index** — i.e. a zip file\ncontaining the on-disk index Ontoserver builds from a SNOMED CT\nRF2 release, ready to be consumed directly without re-indexing.\n\nConsumers that recognise this artefact type can load the index\ndirectly; consumers that do not MUST ignore the entry (the artefact\nis not a SNOMED CT RF2 release).\n\n## Wire-level scheme URI\n\nOn the wire, the Atom `⟨category⟩` element's `scheme` attribute carries one\nof these URIs — not the canonical of this CodeSystem:\n\n- `http://ontoserver.csiro.au/syndication/rf2/1.0.0`\n- `http://ontoserver.csiro.au/syndication/rf2/2.0.0`\n\nThe trailing path segment is the **binary index format version** —\nnot the version of the SNOMED CT release contained in the index.\nA consumer MUST match the scheme URI exactly: an index published as\n`…/rf2/1.0.0` is not interchangeable with one published as\n`…/rf2/2.0.0`.\n\nThe label paired with this term on the `⟨category⟩` element is conventionally\n`Binary Index`.",
        "exampleBoolean": false
      },
      {
        "extension": [
          {
            "url": "http://hl7.org/fhir/tools/StructureDefinition/resource-information",
            "valueString": "ValueSet"
          }
        ],
        "reference": {
          "reference": "ValueSet/ontoserver-rf2-index"
        },
        "name": "Ontoserver RF2 Binary Index Category Value Set",
        "description": "The single category term used when an entry's `scheme` is one of the\nOntoserver RF2 binary-index URIs (`http://ontoserver.csiro.au/syndication/rf2/1.0.0`\nor `…/2.0.0`).",
        "exampleBoolean": false
      },
      {
        "extension": [
          {
            "url": "http://hl7.org/fhir/tools/StructureDefinition/resource-information",
            "valueString": "StructureDefinition:logical"
          }
        ],
        "reference": {
          "reference": "StructureDefinition/syndication-category"
        },
        "name": "Terminology Syndication Category",
        "description": "An Atom `⟨category⟩` element classifying a syndication entry. The\n`scheme` URI identifies the controlled vocabulary; `term` is the\nmachine code; `label` is the human-readable form.\n\nThe binding of `term` depends on `scheme`:\n\n| `scheme`                                                                   | `term` ValueSet           |\n|----------------------------------------------------------------------------|---------------------------|\n| `http://ns.electronichealth.net.au/ncts/syndication/asf/scheme/1.0.0`      | SyndicationContentTypeVS  |\n| `http://ontoserver.csiro.au/syndication/rf2/1.0.0`                         | OntoserverRf2IndexVS      |\n| `http://ontoserver.csiro.au/syndication/rf2/2.0.0`                         | OntoserverRf2IndexVS      |\n| any other scheme                                                            | unconstrained             |\n\nThis conditional rule is enforced by the `category-term-scheme-binding`\ninvariant. Slicing would be a more natural FHIR-level expression, but\nslice declarations are not supported on Logical models.",
        "exampleBoolean": false
      },
      {
        "extension": [
          {
            "url": "http://hl7.org/fhir/tools/StructureDefinition/resource-information",
            "valueString": "CodeSystem"
          }
        ],
        "reference": {
          "reference": "CodeSystem/syndication-content-type"
        },
        "name": "Terminology Syndication Content Type",
        "description": "The set of terms used on a `category` element's `term` attribute to\nidentify what kind of terminology artefact a syndication entry carries.\n\nThis code system represents the NCTS Atom Syndication Format\ncategory scheme, identified by the URI\n`http://ns.electronichealth.net.au/ncts/syndication/asf/scheme/1.0.0`.\n\nEvery entry SHOULD include at least one category whose `scheme` is\nthis URI; consumers use this category to decide how to load the\nlinked artefact.",
        "exampleBoolean": false
      },
      {
        "extension": [
          {
            "url": "http://hl7.org/fhir/tools/StructureDefinition/resource-information",
            "valueString": "ValueSet"
          }
        ],
        "reference": {
          "reference": "ValueSet/syndication-content-type"
        },
        "name": "Terminology Syndication Content Type Value Set",
        "description": "All codes from the NCTS ASF category scheme. Used to classify the\nartefact carried by a syndication entry.",
        "exampleBoolean": false
      },
      {
        "extension": [
          {
            "url": "http://hl7.org/fhir/tools/StructureDefinition/resource-information",
            "valueString": "StructureDefinition:logical"
          }
        ],
        "reference": {
          "reference": "StructureDefinition/syndication-entry"
        },
        "name": "Terminology Syndication Entry",
        "description": "An Atom `⟨entry⟩` (RFC 4287 §4.1.2) representing a single syndicated\nartefact set — for example an RF2 release package, a FHIR\nCodeSystem, a FHIR ValueSet, or a FHIR NPM package.\n\nAn entry combines the Atom 1.0 entry model with three extension\nnamespaces: NCTS ASF (terminology metadata), SNOMED CT (package\ndependencies, MD5 hashes), and Ontoserver (permissions, validation\nstate).\n\n## Cross-field semantics\n\nWhen an entry's artefact is a FHIR canonical resource (CodeSystem,\nValueSet, ConceptMap, NamingSystem, StructureDefinition, …):\n\n- `contentItemIdentifier` SHOULD equal the resource's `⟨url⟩`.\n- `contentItemVersion` SHOULD equal `{url}|{version}` (the canonical URL,\n  a pipe, and the version).\n- `published` SHOULD equal the resource's `date`.\n- `title` SHOULD equal the resource's `title` where present, else `name`.\n- `rights` SHOULD reflect the resource's `copyright`.\n\nWhen the artefact is a SNOMED CT module:\n\n- `contentItemIdentifier` SHOULD be the unversioned SNOMED CT module URI\n  (`http://snomed.info/sct/{moduleId}`).\n- `contentItemVersion` SHOULD be the versioned SNOMED CT URI\n  (`http://snomed.info/sct/{moduleId}/version/{YYYYMMDD}`).",
        "exampleBoolean": false
      },
      {
        "extension": [
          {
            "url": "http://hl7.org/fhir/tools/StructureDefinition/resource-information",
            "valueString": "StructureDefinition:logical"
          }
        ],
        "reference": {
          "reference": "StructureDefinition/syndication-feed"
        },
        "name": "Terminology Syndication Feed",
        "description": "An Atom 1.0 feed (RFC 4287) used to syndicate terminology releases.\n\nThe default XML namespace is `http://www.w3.org/2005/Atom`. Feeds\nthat use the NCTS ASF profile additionally declare the `ncts:`\nnamespace and SHOULD include the `⟨ncts:atomSyndicationFormatProfile⟩`\nelement identifying the profile version.\n\nA feed is an ordered collection of entries (RFC 4287 §4.1). Order\nis publisher-defined; consumers MUST NOT rely on order to determine\nrecency — use the entry-level `updated` element instead.",
        "exampleBoolean": false
      },
      {
        "extension": [
          {
            "url": "http://hl7.org/fhir/tools/StructureDefinition/resource-information",
            "valueString": "StructureDefinition:logical"
          }
        ],
        "reference": {
          "reference": "StructureDefinition/syndication-feed-metadata"
        },
        "name": "Terminology Syndication Feed Metadata",
        "description": "A reduced description of a feed, used inside an entry's\n`⟨source⟩` element (Atom RFC 4287 §4.2.11).\n\nWhen an entry is copied, mirrored, or aggregated from one feed into\nanother, the receiving feed SHOULD preserve the originating feed's\nidentity by including a `⟨source⟩` element on the entry. The\n`⟨source⟩` element carries enough metadata to recover the\noriginating feed even if the entry is later detached from any feed\ndocument.\n\nA consumer that re-encounters the same entry `⟨id⟩` in two\ndifferent feeds can use `⟨source⟩` to disambiguate origin.",
        "exampleBoolean": false
      },
      {
        "extension": [
          {
            "url": "http://hl7.org/fhir/tools/StructureDefinition/resource-information",
            "valueString": "StructureDefinition:logical"
          }
        ],
        "reference": {
          "reference": "StructureDefinition/syndication-link"
        },
        "name": "Terminology Syndication Link",
        "description": "An Atom `⟨link⟩` element (RFC 4287 §4.2.7) inside a syndication entry. The\ncore Atom attributes carry the artefact URL and media type; the\nextension namespaces add file-level integrity and validation\nmetadata.\n\n## Integrity\n\nA consumer MUST be able to verify a downloaded artefact's integrity.\nAt least one of `md5Hash` or `sha256Hash` SHOULD be present on every\nlink whose `rel` is `alternate` or `related`. Where both are\npresent, `sha256Hash` is authoritative.\n\nThe hash is computed over the byte stream that `href` resolves to,\nexactly as published — without any decompression or\ncontent-encoding negotiation.\n\n## Length\n\n`length` is the byte count of that same stream. When present, it\nMUST match what the `href` resolves to.",
        "exampleBoolean": false
      }
    ],
    "page": {
      "extension": [
        {
          "url": "http://hl7.org/fhir/tools/StructureDefinition/ig-page-name",
          "valueUrl": "toc.html"
        }
      ],
      "nameUrl": "toc.html",
      "title": "Table of Contents",
      "generation": "html",
      "page": [
        {
          "extension": [
            {
              "url": "http://hl7.org/fhir/tools/StructureDefinition/ig-page-name",
              "valueUrl": "index.html"
            }
          ],
          "nameUrl": "index.html",
          "title": "Home",
          "generation": "markdown"
        },
        {
          "extension": [
            {
              "url": "http://hl7.org/fhir/tools/StructureDefinition/ig-page-name",
              "valueUrl": "feed-format.html"
            }
          ],
          "nameUrl": "feed-format.html",
          "title": "Feed Format",
          "generation": "markdown"
        },
        {
          "extension": [
            {
              "url": "http://hl7.org/fhir/tools/StructureDefinition/ig-page-name",
              "valueUrl": "entry-format.html"
            }
          ],
          "nameUrl": "entry-format.html",
          "title": "Entry Format",
          "generation": "markdown"
        },
        {
          "extension": [
            {
              "url": "http://hl7.org/fhir/tools/StructureDefinition/ig-page-name",
              "valueUrl": "ncts-extensions.html"
            }
          ],
          "nameUrl": "ncts-extensions.html",
          "title": "NCTS ASF Extensions",
          "generation": "markdown"
        },
        {
          "extension": [
            {
              "url": "http://hl7.org/fhir/tools/StructureDefinition/ig-page-name",
              "valueUrl": "sct-extensions.html"
            }
          ],
          "nameUrl": "sct-extensions.html",
          "title": "SNOMED CT Extensions",
          "generation": "markdown"
        },
        {
          "extension": [
            {
              "url": "http://hl7.org/fhir/tools/StructureDefinition/ig-page-name",
              "valueUrl": "onto-extensions.html"
            }
          ],
          "nameUrl": "onto-extensions.html",
          "title": "Ontoserver Extensions",
          "generation": "markdown"
        },
        {
          "extension": [
            {
              "url": "http://hl7.org/fhir/tools/StructureDefinition/ig-page-name",
              "valueUrl": "categories.html"
            }
          ],
          "nameUrl": "categories.html",
          "title": "Category Schemes",
          "generation": "markdown"
        },
        {
          "extension": [
            {
              "url": "http://hl7.org/fhir/tools/StructureDefinition/ig-page-name",
              "valueUrl": "security.html"
            }
          ],
          "nameUrl": "security.html",
          "title": "Security",
          "generation": "markdown"
        },
        {
          "extension": [
            {
              "url": "http://hl7.org/fhir/tools/StructureDefinition/ig-page-name",
              "valueUrl": "relationship-crmi.html"
            }
          ],
          "nameUrl": "relationship-crmi.html",
          "title": "Relationship to HL7 CRMI",
          "generation": "markdown"
        },
        {
          "extension": [
            {
              "url": "http://hl7.org/fhir/tools/StructureDefinition/ig-page-name",
              "valueUrl": "examples.html"
            }
          ],
          "nameUrl": "examples.html",
          "title": "Examples",
          "generation": "markdown"
        }
      ]
    },
    "parameter": [
      {
        "code": "path-resource",
        "value": "input/capabilities"
      },
      {
        "code": "path-resource",
        "value": "input/examples"
      },
      {
        "code": "path-resource",
        "value": "input/extensions"
      },
      {
        "code": "path-resource",
        "value": "input/models"
      },
      {
        "code": "path-resource",
        "value": "input/operations"
      },
      {
        "code": "path-resource",
        "value": "input/profiles"
      },
      {
        "code": "path-resource",
        "value": "input/resources"
      },
      {
        "code": "path-resource",
        "value": "input/vocabulary"
      },
      {
        "code": "path-resource",
        "value": "input/maps"
      },
      {
        "code": "path-resource",
        "value": "input/testing"
      },
      {
        "code": "path-resource",
        "value": "input/history"
      },
      {
        "code": "path-resource",
        "value": "fsh-generated/resources"
      },
      {
        "code": "path-pages",
        "value": "template/config"
      },
      {
        "code": "path-pages",
        "value": "input/assets"
      },
      {
        "code": "path-pages",
        "value": "input/images"
      },
      {
        "code": "path-tx-cache",
        "value": "input-cache/txcache"
      }
    ]
  }
}