getCorrelationParent() - JPA From's method

From<Z,X> getCorrelationParent()

Returns the parent From object from which the correlated From object has been obtained through correlation (use of a Subquery correlate method).
the parent of the correlated From object
IllegalStateException - if the From object has not been obtained through correlation
JPA 2.0

This documentation page is derived (with some adjustments) from the open source JPA 2 RI (EclipseLink)
and is available under the terms of the Eclipse Public License, v. 1.0 and Eclipse Distribution License, v. 1.0.
Object Relational Mapping (ORM) JPA 2 providers include Hibernate, EclipseLink, TopLink, OpenJPA and DataNucleus.
ObjectDB is not an ORM JPA implementation but an Object Database for Java with built in JPA 2 support.