An example generates JPA Metamodels with Apache Maven.

There are eight profiles prepared for four providers which each has to methods for generating JPA static metamodels.

Uses org.eclipselink.persistence:org.eclipselink.persistence.jpa.modelgen.processor as an optional dependency.

Uses org.eclipse.persistence.internal.jpa.modelgen.CanonicalModelProcessor from org.eclipselink.persistence:org.eclipselink.persistence.jpa.modelgen.processor as an annotation processor.

• Note that a compiler argument(-Aeclipselink.persistencexml) of the location of persistence.xml is required.

Uses org.hibernate:hibernate-jpamodelgen as an optional dependency.

Uses org.hibernate.jpamodelgen.JPAMetaModelEntityProcessor from org.hibernate:hibernate-jpamodelgen as an annotation processor.

• Note that javax.xml.bind.jaxb-api is required.

Uses org.apache.openjpa:openjpa as an optional dependency.

• Note that javax.annotation:javax:annotation-api is required.
• And a compier argument(-Aopenjpa.metamodel) must be set.

Uses org.apache.openjpa.persistence.meta.AnnotationProcessor6 of org.apache.openjpa:openjpa as an annotation processor.

Uses org.datanucleus:datanucleus-jpa-query as an optional dependency.

Uses org.datanucleus.jpa.query.JPACriteriaProcessor from org.datanucleus:datanucleus-jpa-query as an annotation processor.

Try to execute build-all-profiles.sh for convenience.