From: "Hardy Ferentschik" <hardy(a)hibernate.org&gt; To: "Gail Badner" <gbadner(a)redhat.com&gt; Cc: "Hibernate hibernate-dev" <hibernate-dev(a)lists.jboss.org&gt; Sent: Friday, March 1, 2013 2:07:56 AM Subject: Re: [hibernate-dev] Is @SecondaryTable required when a join table is specified? Hi, Secondary tables and associations (join tables) are really two different things. A secondary table allows you to map your entity properties to multiple tables. @JoinTable on the other hand are used to map associations and configure certain properties of the join table. One does not require the other. I am not sure what makes you believe that using @JoinTable requires the use of @SecondaryTable. If you after some examples have a look at the JPA spec as well. It is a good starting point. Regarding the metamodel branch, I am not sure about the binders and so on, but afaicr the sources does not imply the link between join table and secondary table. --Hardy On 1 Jan 2013, at 7:13 AM, Gail Badner <gbadner(a)redhat.com&gt; wrote: > I noticed that org.hibernate.test.annotations.onetoone.OneToOneTest > and OptionalOneToOnePKJCTest uses this mapping: > > https://github.com/hibernate/hibernate-orm/blob/master/hibernate-core/src... > > Son.father specifies a join-table ("father_son"), but has no > <secondary-table>. There is no @SecondaryTable defined in Son > (this is a unidirectional association). > > I thought that @SecondaryTable was required when an association > uses a join table. Currently, that's how it works in the new > metamodel. > > Should it be optional? > > Thanks, > Gail > _______________________________________________ > hibernate-dev mailing list > hibernate-dev(a)lists.jboss.org > https://lists.jboss.org/mailman/listinfo/hibernate-dev

Actually, there are entities used in unit tests with @SecondaryTable defined with only *-to-one attributes that refer to those tables: org.hibernate.test.annotations.inheritance.mixed.File org.hibernate.test.annotations.inheritance.mixed.SymbolicLink org.hibernate.test.annotations.manytoone.OrderLine org.hibernate.test.annotations.onetoone.Client Unless I hear otherwise, I'll assume @SecondaryTable can optionally be defined if only associations refer to it. Gail ----- Original Message ----- > From: "Gail Badner" <gbadner(a)redhat.com&gt; > To: "Hardy Ferentschik" <hardy(a)hibernate.org&gt; > Cc: "Hibernate hibernate-dev" <hibernate-dev(a)lists.jboss.org&gt; > Sent: Friday, March 1, 2013 11:06:04 AM > Subject: Re: [hibernate-dev] Is @SecondaryTable required when a join table is specified? > > Hi Hardy, > > I've seen lots of unit tests that have @SecondaryTable. I didn't make > the connection that it was non-association attributes that refer to > a secondary table. > > Thanks for the clarification. > Gail > > ----- Original Message ----- >> From: "Hardy Ferentschik" <hardy(a)hibernate.org&gt; >> To: "Gail Badner" <gbadner(a)redhat.com&gt; >> Cc: "Hibernate hibernate-dev" <hibernate-dev(a)lists.jboss.org&gt; >> Sent: Friday, March 1, 2013 2:07:56 AM >> Subject: Re: [hibernate-dev] Is @SecondaryTable required when a >> join table is specified? >> >> Hi, >> >> Secondary tables and associations (join tables) are really two >> different things. A secondary table allows you to map your entity >> properties to >> multiple tables. @JoinTable on the other hand are used to map >> associations and configure certain properties of the join table. >> One does not require the other. I am not sure what makes you >> believe >> that using @JoinTable requires the use of @SecondaryTable. >> If you after some examples have a look at the JPA spec as well. It >> is >> a good starting point. >> >> Regarding the metamodel branch, I am not sure about the binders and >> so on, but afaicr the sources does not imply the link >> between join table and secondary table. >> >> --Hardy >> >> >> On 1 Jan 2013, at 7:13 AM, Gail Badner <gbadner(a)redhat.com&gt; wrote: >> >>> I noticed that >>> org.hibernate.test.annotations.onetoone.OneToOneTest >>> and OptionalOneToOnePKJCTest uses this mapping: >>> >>> https://github.com/hibernate/hibernate-orm/blob/master/hibernate-core/src... >>> >>> Son.father specifies a join-table ("father_son"), but has no >>> <secondary-table>. There is no @SecondaryTable defined in Son >>> (this is a unidirectional association). >>> >>> I thought that @SecondaryTable was required when an association >>> uses a join table. Currently, that's how it works in the new >>> metamodel. >>> >>> Should it be optional? >>> >>> Thanks, >>> Gail >>> _______________________________________________ >>> hibernate-dev mailing list >>> hibernate-dev(a)lists.jboss.org >>> https://lists.jboss.org/mailman/listinfo/hibernate-dev > _______________________________________________ > hibernate-dev mailing list > hibernate-dev(a)lists.jboss.org > https://lists.jboss.org/mailman/listinfo/hibernate-dev _______________________________________________ hibernate-dev mailing list hibernate-dev(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/hibernate-dev