|replication_confirmed_at|datetime|When replication_confirmed was confirmed. If replication_confirmed is null, this field is also null.||
|trash_at|datetime|If @trash_at@ is non-null and in the past, this collection will be hidden from API calls. May be untrashed.||
|delete_at|datetime|If @delete_at@ is non-null and in the past, the collection may be permanently deleted.||
-|is_trashed|datetime|True if @trash_at@ is in the past, false if not.||
+|is_trashed|boolean|True if @trash_at@ is in the past, false if not.||
+|current_version_uuid|string|UUID of the collection's current version. On new collections, it'll be equal to the @uuid@ attribute.||
+|version|number|Version number, starting at 1 on new collections. This attribute is read-only.||
+|preserve_version|boolean|When set to true on a current version, it will be saved on the next versionable update.||
+|file_count|number|The total number of files in the collection. This attribute is read-only.||
+|file_size_total|number|The sum of the file sizes in the collection. This attribute is read-only.||
h3. Conditions of creating a Collection
h3. delete
-Put a Collection in the trash. This sets the @trash_at@ field to @now@ and @delete_at@ field to @now@ + token TTL. A trashed group is invisible to most API calls unless the @include_trash@ parameter is true.
+Put a Collection in the trash. This sets the @trash_at@ field to @now@ and @delete_at@ field to @now@ + token TTL. A trashed collection is invisible to most API calls unless the @include_trash@ parameter is true.
Arguments:
See "common resource list method.":{{site.baseurl}}/api/methods.html#index
+table(table table-bordered table-condensed).
+|_. Argument |_. Type |_. Description |_. Location |_. Example |
+|include_trash|boolean (default false)|Include trashed collections.|query||
+|include_old_versions|boolean (default false)|Include past versions of the collection(s) being listed, if any.|query||
+
Note: Because adding access tokens to manifests can be computationally expensive, the @manifest_text@ field is not included in results by default. If you need it, pass a @select@ parameter that includes @manifest_text@.
h3. update
|_. Argument |_. Type |_. Description |_. Location |_. Example |
{background:#ccffcc}.|uuid|string|The UUID of the Collection to untrash.|path||
|ensure_unique_name|boolean (default false)|Rename collection uniquely if untrashing it would fail with a unique name conflict.|query||
+
+
+h3. provenance
+
+Returns a list of objects in the database that directly or indirectly contributed to producing this collection, such as the container request that produced this collection as output.
+
+The general algorithm is:
+
+# Visit the container request that produced this collection (via @output_uuid@ or @log_uuid@ attributes of the container request)
+# Visit the input collections to that container request (via @mounts@ and @container_image@ of the container request)
+# Iterate until there are no more objects to visit
+
+Arguments:
+
+table(table table-bordered table-condensed).
+|_. Argument |_. Type |_. Description |_. Location |_. Example |
+{background:#ccffcc}.|uuid|string|The UUID of the Collection to get provenance.|path||
+
+h3. used_by
+
+Returns a list of objects in the database this collection directly or indirectly contributed to, such as containers that takes this collection as input.
+
+The general algorithm is:
+
+# Visit containers that take this collection as input (via @mounts@ or @container_image@ of the container)
+# Visit collections produced by those containers (via @output@ or @log@ of the container)
+# Iterate until there are no more objects to visit
+
+Arguments:
+
+table(table table-bordered table-condensed).
+|_. Argument |_. Type |_. Description |_. Location |_. Example |
+{background:#ccffcc}.|uuid|string|The UUID of the Collection to get usage.|path||
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