The hibernate5-ddl-maven-plugin is a simple Maven plugin for creating SQL DDL files for JPA entities. The plugin uses Hibernates API for SchemaExport. The plugin is available from Maven Central.
Starting with version 1.0.1 the plugin is provided in different variants build against the most current Hibernate versions. For example, 1.0.1 is available in two variants: One build against Hibernate 5.1.2 (latest version of the 5.1.x branch of Hibernate at that time) and 5.2.4 (latest version of the 5.2.x branch). The Hibernate team also still maintains the 5.0.x branch. Unfortunately the parts of the Hibernate API used by this plugin were changed between Hibernate 5.0.x and Hibernate 5.1.x. You can still use this plugin even if you are using 5.0.x in your application.
The code is available at GitHub at http://github.com/jpdigital/hibernate5-ddl-maven-plugin. The projects web site is also available on GitHub at http://jpdigital.github.io/hibernate5-ddl-maven-plugin.
Please note that this plugin is not an official Hibernate tool. It was created because I needed the functionality provided by this plugin for several projects.