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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 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 Repos or Collections.

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

• /orgs

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

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

  • POST – Creates a new org.

• /orgs/{ORG_ID}

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

    • Suggested properties: dct:title "{ORG_TITLE}"

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

  • PATCH – Updates an existing org.

  • DELETE -- – Deletes an org.

• /orgs/{ORG_ID}/repos/{REPO_ID}

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

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

  • POST – Creates a new repo.

• /orgs/{ORG_ID}/repos/{REPO_ID}

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

    • Suggested properties: dct:title "{REPO_TITLE}"

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

  • PATCH – Updates an existing repo.

  • DELETE -- Deletes a repo. – 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 branch.

  • PATCH – Updates an existing branch.

  • DELETE – Deletes a branch.

• /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 properties.

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

  • PUT – Creates a new collection.

    • Suggested properties: dct:title "{COLLECTION_TITLE}"

  • GET – Reads public properties of the given collection.

  • PATCH – Updates an existing collection.

  • DELETE -- – Deletes a collection.