The plugin is designed to be the best Middlegen plugin :-) and provide a feature full solution for those that like to (or must) work using a bottom up strategy. The plugin provides:

• The bulk of the options for both direct Hibernate mapping attributes and hbm2java meta attributes.
• Appropriate GUI enhancements (See images in Middlegen JIRA). This allows easily selecting the various options and using the faciltiies provided.
• Storing the GUI state for both the Table and Columns so that it is correctly restored each fine tuning or code generation session.
• Full support for setting attributes across multiply selected columns (I don't allow multiple select for some properties, eg, the gen-property meta attribute).
• Added silent unique mapping attribute (not a part of the GUI).
• Full Relationship support (through foreign keys), eg, one-to-one, one-to-many, many-to-one, many-to-many with either uni- and bi-directional associations. Note: One-to-one with foreign keys requires hibenate 2.1.
• Compound key support. Method uses an external Java class to hold the key fields.
• No primary key tables are generated a single compound key property.
• XDoclet markup for POJO generation to allow prototyping for top-to-bottom development.
• Generate the hbm file appropriately (decided to not generate any optional XML attributes if it is not required and setting is equal to the default or an empty value).
• Custom Java type mapper plugin provider facility (start of Plugins for this Plugin).

The areas I have not implemented (as yet) include: polymorphism (and associate items), generated class name meta attribute, meta finder method and meta session method, or inheritance of meta data options (This is likely to be asked for in the future (assuming it gets a user base) but at this stage it will overload the GUI and I did not want to get to complicated).