"SchemaManagementException: SQL strings added more than once" in Hibernate
Issue
- Two different entities in a single persistence unit are mapped to tables by the same name which reside in different database schemas
-
The tables each have unique constraints on identically named, non-primary key properties
@Entity @Table(name = "employee", schema = "testone") public class EmployeeOne { @Id private String name; @Column(unique = true) private String title; ... } @Entity @Table(name = "employee", schema = "testtwo") public class EmployeeTwo { @Id private String name; @Column(unique = true) private String title; ... } -
When Hibernate is used to generate the database artifacts, (e.g.
hibernate.hbm2ddl.auto=create-drop), an exception is raised... org.hibernate.tool.schema.spi.SchemaManagementException: SQL strings added more than once for: employee.UK-UK_.... at org.hibernate.tool.schema.internal.SchemaCreatorImpl.checkExportIdentifier(SchemaCreatorImpl.java:408) at org.hibernate.tool.schema.internal.SchemaCreatorImpl.createFromMetadata(SchemaCreatorImpl.java:347) at org.hibernate.tool.schema.internal.SchemaCreatorImpl.performCreation(SchemaCreatorImpl.java:165) at org.hibernate.tool.schema.internal.SchemaCreatorImpl.doCreation(SchemaCreatorImpl.java:134) at org.hibernate.tool.schema.internal.SchemaCreatorImpl.doCreation(SchemaCreatorImpl.java:120) at org.hibernate.tool.schema.spi.SchemaManagementToolCoordinator.performDatabaseAction(SchemaManagementToolCoordinator.java:148) at org.hibernate.tool.schema.spi.SchemaManagementToolCoordinator.process(SchemaManagementToolCoordinator.java:65) at org.hibernate.internal.SessionFactoryImpl.<init>(SessionFactoryImpl.java:478) at org.hibernate.boot.internal.SessionFactoryBuilderImpl.build(SessionFactoryBuilderImpl.java:423) at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.build(EntityManagerFactoryBuilderImpl.java:880) ...
Environment
- Red Hat JBoss Enterprise Application Platform (EAP) 7
- Hibernate 5
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