Subgraph<X> addKeySubgraph(
  String attributeName,
  Class<X> type
)

Add a node to the graph that corresponds to a map key that is a managed type with inheritance. This allows for construction of multi-node entity graphs that include related managed types. Subclass subgraphs will include the specified attributes of superclass subgraphs

Parameters:

attributeName - name of the attribute

type - entity subclass

Returns:

subgraph for the attribute.

Throws:

IllegalStateException - if this EntityGraph has been statically defined.

IllegalArgumentException - if the attribute's target type is not a managed type.

Since:

Jakarta Persistence (JPA) 1.0