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This article describes the role of the “Cluster” named graph in MMS5Flexo MMS. Layer 1 forbids arbitrary writes to this graph and instead exposes a set of LDP endpoints.

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This named graph holds organizational objects that are global to the deployed MMS5 Flexo MMS cluster. Specifically, a Project Repo is the container for version-controlled data (similar to a git repository), a Collection is readonly view that selects the union of any number of Refs when queried, and an Org is an entity that owns Projects Repos or Collections.

Linked Data Platform (LDP) actions

The following list describes the LDP semantics of various HTTP operations available on Cluster objects.

• /projectsorgs

  • HEAD – Returns state of all orgs along with their entity tags.

  • GET – Enumerates all projects orgs along with their public annotation properties.

  /projects

  • POST – Creates a new org.

• /orgs/{PROJECTORG_ID}

  • PUT – Creates a new projectorg, or replaces an existing one.

    • Required Suggested properties: mms:org {ORG} and dct:title "{PROJECTORG_TITLE}"

  • HEAD/GET – Reads public annotation properties of the given projectorg.

  • PATCH – Updates an existing projectorg.

  • DELETE -- Deletes a project.

  /collections

  • – Deletes an org.

• /orgs/{ORG_ID}/repos

  • HEAD – Returns state of all repos under the given org, along with their entity tags.

  • GET – Enumerates all projects repos along with their public annotation properties.

  /collections/{COLLECTION

  • POST – Creates a new repo.

• /orgs/{ORG_ID}/repos/{REPO_ID}

  • PUT – Creates a new collectionrepo, or replaces an existing one.

    • Required Suggested properties: mms:org {ORG} and dct:title "{COLLECTIONREPO_TITLE}"

  • HEAD/GET – Reads public annotation properties of the given repo.

  • PATCH – Updates an existing repo.

  • DELETE – Deletes a repo.

• /orgs/{ORG_ID}/repos/{REPO_ID}/branches

  • HEAD – Returns state of all branches under the given repo, along with their entity tags.

  • GET – Enumerates all branches belonging to the given repo.

• /orgs/{ORG_ID}/repos/{REPO_ID}/branches/{BRANCH_ID}

  • PUT – Creates a new branch

  • HEAD/GET – Reads public properties of the given projectbranch.

  • PATCH – Updates an existing projectbranch.

  • DELETE -- – Deletes a projectbranch.

• /orgs/{ORG_ID}/repos/{REPO_ID}/locks

  • HEAD – Returns state of all locks under the given repo, along with their entity tags.

  • GET – Enumerates all locks belonging to the given repo.

• /orgs/{ORG_ID}/repos/{REPO_ID}/locks/{LOCK_ID}

  • PUT – Creates a new branch

  • HEAD/GET – Reads public properties of the given branch.

  • PATCH – Updates an existing branch.

  • DELETE – Deletes a branch

• /orgs/{ORG_ID}/collections/{COLLECTION_ID}

  • GET – Enumerates all collections along with their public annotation properties.

• /orgs/{ORG_ID}/collections/{COLLECTION_ID}

  • PUT – Creates a new orgcollection.

    • Required Suggested properties: dct:title "{ORGCOLLECTION_TITLE}"

  • GET – Reads public annotation properties of the given orgcollection.

  • PATCH – Updates an existing orgcollection.

  • DELETE -- Deletes an org – Deletes a collection.