Some Fossies usage hints in advance:

To see the Doxygen generated documentation please click on one of the items in the steelblue colored "quick index" bar above or use the side panel at the left which displays a hierarchical tree-like index structure and is adjustable in width.
If you want to search for something by keyword rather than browse for it you can use the client side search facility (using Javascript and DHTML) that provides live searching, i.e. the search results are presented and adapted as you type in the Search input field at the top right.
Doxygen doesn't incorporate all member files but just a definable subset (basically the main project source code files that are written in a supported language). So to search and browse all member files you may visit the Fossies apache-roller-6.1.1-source.tar.gz contents page and use the Fossies standard member browsing features (also with source code highlighting and additionally with optional code folding).

Apache Roller

Apache Roller is a Java-based, full-featured, multi-user and group-blog server suitable for blog sites large and small. Roller is typically run with Apache Tomcat and MySQL. Roller is made up of the following Maven projects:

roller-project: Top level project
app: Roller Weblogger webapp, JSP pages, Velocity templates
assembly-release: Used to create official distributions of Roller
docs: Roller documentation in ODT format
it-selenium: Integrated browser tests for Roller using Selenium

Documentation

The Roller Install, User and Template Guides are available in ODT format (for OpenOffice or LibraOffice):

https://github.com/apache/roller/tree/master/docs

For more information

Hit the Roller Confluence wiki:

How to build and run Roller: https://cwiki.apache.org/confluence/x/EM4
How to contribute to Roller: https://cwiki.apache.org/confluence/x/2hsB
How to make a release of Roller: https://cwiki.apache.org/confluence/x/gycB
Other developer resources: https://cwiki.apache.org/confluence/x/D84

Installing Roller

If you want to run Roller in production, then you should down load the latest official release and install it by following the Installation Guide, which you can find at the documentation link: https://github.com/apache/roller/tree/master/docs.

Quick start: Running via Maven

You probably should not run Roller in production using this technique, but it's a relatively easy way to try Roller for yourself. Assuming you've got a UNIX shell, Java, Maven and Git:

Get the code:

$ git clone https://github.com/apache/roller.git

Compile and build Roller:

$ cd roller
$ mvn -DskipTests=true install

Run Roller in Jetty with an embedded Derby database (for testing only):

$ mvn jetty:run

Once Jetty is up and running browse to http://localhost:8080/roller to try to Roller.

Quick start: running via Docker

Another way to try Roller is to use Docker. This is actually easier than running via Maven because you do not need Maven or Java. If you've got Docker, here's how you can run Roller for demo purposes.

Get the code:

$ git clone https://github.com/apache/roller.git

Run Docker Compose to build and launch Roller along with a PostgreSQL database:

$ cd roller
$ docker-compose up

It will take a while to build and start the Docker image. Once it's done browse to http://localhost:8080/roller to try Roller.