Overview
- Mediaflux intro
- Import data with metadata
- Query data based on metadata searches
Exercises
Mediaflux (ref) is the underlying storage platform that pshell communicates with. It is out of scope to discuss the full capabilities of Mediaflux, but, a few relevant items will be mentioned.
Mediaflux is a database on a filesystem (or filesystems) that can be queried in a somewhat comparable manner as SQL. The Mediaflux database is XML based so the arguments and search terms are couched in the language of XML.
Every file stored in a Mediaflux server gets transformed into an asset and has a unique ID reference - this is the ID reported by pshell in the previous introductory section.
An asset consists of metadata and a reference to where the actual file content is stored ie the file-system path. Both the metadata and file content can be versioned and previous version retrieved. The default behaviour if no particular version is specified is to use the most recent version. Multiple versions of file content impact your usage/quota.
namespaces are the Mediaflux name for the virtual folder structure that was introduced in the previous section.
metadata format - this tells you what queries can be done
asset.get :id <asset-id> asset.get :id "path=/some/namespace/filename"
querying metadata
adding metadata
doing things with queries (ie pipes)