neo4j-example-blogger

A simple blogging service, written in scala and using neo4j for persistence.

A Tour of the Model

###Blog Service

The blogging service itself.

• manages User
  • user creation
  • finds existing Users
• knows about Blog
  • finds existing Blogs

###User

Users of the blogging system, Users create Blogs and Articles.

• can admin Blog
  • blog administrator
  • initial creator of a blog is automatically an admin
  • an admin can grant admin privileges to other users
  • an admin can grant publish access to other users
• can publish to Blog
  • allowed to publish articles to the blog
  • initial creator of a blog is automatically allowed to publish to that blog
  • a user can publish to multiple blogs
• is owner (of) Article
  • an article can only have one owner
• is author (of) Article
  • an Article can have many authors
• is working on WorkingCopy
  • for every Article, a user has a personal WorkingCopy

###Blog

A place to publish Articles. Any User who "can publish to" is allowed to publish an Article to a Blog, as long as there are no un-committed WorkingCopies.

• Article is published in The direction here could easily be reversed.

###Article

Some engrossing reading material written by one or more Users. Articles can have multiple revisions.

• next version (of) Article
  • a more recent version of an Article
  • enables a linked-list of Articles
• published in Blog
  • each User can publish an Article in any Blog to which they can publish This allows a single article to first appear in, say, "Kolleger Family Times" and then later get picked up by "National Geographic".

###Working Copy

An editable version of an Article, allowing Users to work on independently, merging changes upon commit. Yeah, light-weight version control that would allow for collaborative editing (if actual diffs were used).

• User is working on
  • personal copy for each User
• copy of Article
  • revision from which this copy started