Installation ============ The following instructions cover dependencies, source code and configuration. Requirements ------------ The minimum requirements are: - The Java Development Kit version 7. Either the `Oracle JDK `_ or the `Open JDK `_ . You might already have Java installed. Open a command prompt and try typing ``java``. - The `MongoDB `_ database. The latest tested version should be **2.2.6**. If you would like to use the extractor functionality (which is true in most cases), you will also need: - The `RabbitMQ `_ event bus. Different packages are available for specific operating systems. Requires Erlang. Erlang is installed with most package as a dependency. For text-based search functionality the following is required: - The `Elasticsearch `_ distributed search service. Requires Java. For content-based search the following is required: - The `Versus `_ service.