We should investigate how to provide alternatives to org.hibernate.search.mapper.pojo.bridge.binding.IdentifierBindingContext#bridge(java.lang.Class<I2>, org.hibernate.search.mapper.pojo.bridge.IdentifierBridge<I2>) and similar that work when the property type itself is a dynamic map (named Map type).

Why

Following this question, I tried to set up a test case where I indexed Envers Audit entities. Not audited entities, but audit entities: the entities that contain revision data for audited entities.

It turns out it's almost possible, if one is willing to use programmatic mapping and to get their hands dirty with conversions. There's just one one problem: we need to apply a custom bridge to the identifier of audit entities, and that currently doesn't work because of type checks that can never pass on the audit entity ID, which is a dynamic map (named Map type).

You can find my prototype here: https://github.com/yrodiere/hibernate-search/blob/audit_entity_indexing/integrationtest/mapper/orm-envers/src/test/java/org/hibernate/search/integrationtest/mapper/orm/envers/EnversIndexedAuditEntityIT.java