Umlg is a uml to java code generator. From uml class diagrams, java entities are generated. The entities persist in graph databases.
'org.umlg:java-metamodel:1.1.0.RC2'
<dependency>
<groupId>org.umlg</groupId>
<artifactId>java-metamodel</artifactId>
<version>1.1.0.RC2</version>
</dependency>
<dependency org="org.umlg" name="java-metamodel" rev="1.1.0.RC2"/>
"org.umlg", "java-metamodel", "1.1.0.RC2"