public class AssociationKey extends java.lang.ObjectUsed to uniquely identify a foreign key, so that we don't join it more than once creating circularities. Note that the table+columns refers to the association owner. These are used to help detect bi-directional associations since the Hibernate runtime metamodel (persisters) do not inherently know this information. For example, consider the Order -> Customer and Customer -> Order(s) bi-directional association; both would be mapped to the
ORDER_TABLE.CUST_IDcolumn. That is the purpose of this struct. Bit of a misnomer to call this an association attribute. But this follows the legacy use of AssociationKey from old JoinWalkers to denote circular join detection
Constructors Constructor Description
AssociationKey(java.lang.String table, java.lang.String columns)Create the AssociationKey.
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