Exception Description: Missing mapping for field id
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Exception Description: Missing mapping for field id
by Mihael Schmidt
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Hi,
I am new to EclipseLink and JPA and have a problem with a ManyToMany relationship with my entities. I'm getting the error: Exception Description: Missing mapping for field [public.hr_bewerbungen.id]. Tables: create table hr_ursachen ( id serial not null primary key, bezeichnung text not null ); create table hr_bewerbungen ( id serial not null primary key, bewerberId integer not null, stelleId integer not null, vorstellungstermin date, ergebnis text, bemerkung text, erfassungsdatum date, version timestamp ); create table hr_herkunft ( bewerbungId integer not null, ursacheId integer not null, primary key(bewerbungId, ursacheId) ); A "Bewerbung" can have many "Ursache". An "Ursache" can be a part of many "Bewerbung". This is saved in the table hr_herkunft. Classes: @Entity @Table(name = "hr_bewerbungen", schema="public") public class Bewerbung implements Serializable { @Id @SequenceGenerator(name="hr_bewerbungen_id_seq", allocationSize=1) @GeneratedValue(strategy=GenerationType.SEQUENCE, generator="hr_bewerbungen_id_seq") private Integer id; @ManyToMany @JoinTable ( name="hr_herkunft", joinColumns= @JoinColumn(name="bewerbungId", referencedColumnName="id"), inverseJoinColumns= @JoinColumn(name="ursacheId", referencedColumnName="id") ) private List<Ursache> ursachen = new ArrayList<Ursache>(); ... } @Entity @Table(name = "hr_ursachen", schema="public") public class Ursache implements Serializable { @Id private Integer id; ... } I need the information which "Ursache" a "Bewerbung" has. The other way round is not important. Any idea what I am doing wrong? Thanx in advance. Mihael _______________________________________________ eclipselink-users mailing list eclipselink-users@... https://dev.eclipse.org/mailman/listinfo/eclipselink-users |
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Re: Exception Description: Missing mapping for field id
by christopher delahunt
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Hello,
The column name defaults to "ID" not "id". Change your referencedColumnName="ID" or define the column name on the private Integer id to be "id". Best Regards, Chris Mihael Schmidt wrote: > Hi, > > I am new to EclipseLink and JPA and have a problem with a ManyToMany > relationship with my entities. > > I'm getting the error: Exception Description: Missing mapping for > field [public.hr_bewerbungen.id]. > > Tables: > > create table hr_ursachen > ( > id serial not null primary key, > bezeichnung text not null > ); > > create table hr_bewerbungen > ( > id serial not null primary key, > bewerberId integer not null, > stelleId integer not null, > vorstellungstermin date, > ergebnis text, > bemerkung text, > erfassungsdatum date, > version timestamp > ); > > create table hr_herkunft > ( > bewerbungId integer not null, > ursacheId integer not null, > primary key(bewerbungId, ursacheId) > ); > > A "Bewerbung" can have many "Ursache". An "Ursache" can be a part of > many "Bewerbung". This is saved in the table hr_herkunft. > > > Classes: > > @Entity > @Table(name = "hr_bewerbungen", schema="public") > public class Bewerbung > implements Serializable > { > @Id > @SequenceGenerator(name="hr_bewerbungen_id_seq", allocationSize=1) > @GeneratedValue(strategy=GenerationType.SEQUENCE, > generator="hr_bewerbungen_id_seq") > private Integer id; > > @ManyToMany > @JoinTable > ( > name="hr_herkunft", > joinColumns= > @JoinColumn(name="bewerbungId", referencedColumnName="id"), > inverseJoinColumns= > @JoinColumn(name="ursacheId", referencedColumnName="id") > ) > private List<Ursache> ursachen = new ArrayList<Ursache>(); > > ... > } > > @Entity > @Table(name = "hr_ursachen", schema="public") > public class Ursache > implements Serializable > { > @Id > private Integer id; > ... > } > > I need the information which "Ursache" a "Bewerbung" has. The other > way round is not important. > > Any idea what I am doing wrong? > > Thanx in advance. > > Mihael > _______________________________________________ > eclipselink-users mailing list > eclipselink-users@... > https://dev.eclipse.org/mailman/listinfo/eclipselink-users eclipselink-users mailing list eclipselink-users@... https://dev.eclipse.org/mailman/listinfo/eclipselink-users |
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Re: Exception Description: Missing mapping for field id
by Mihael Schmidt
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Thanx that was it. Added a @Column(name="id") to the Integer id.
Though what makes me wonder is that I hadn't any problems without the extra column definition so far. Best Regards Mihael christopher delahunt schrieb: > Hello, > > The column name defaults to "ID" not "id". Change your > referencedColumnName="ID" or define the column name on the private > Integer id to be "id". > > Best Regards, > Chris > > Mihael Schmidt wrote: >> Hi, >> >> I am new to EclipseLink and JPA and have a problem with a ManyToMany >> relationship with my entities. >> >> I'm getting the error: Exception Description: Missing mapping for >> field [public.hr_bewerbungen.id]. >> >> Tables: >> >> create table hr_ursachen >> ( >> id serial not null primary key, >> bezeichnung text not null >> ); >> >> create table hr_bewerbungen >> ( >> id serial not null primary key, >> bewerberId integer not null, >> stelleId integer not null, >> vorstellungstermin date, >> ergebnis text, >> bemerkung text, >> erfassungsdatum date, >> version timestamp >> ); >> >> create table hr_herkunft >> ( >> bewerbungId integer not null, >> ursacheId integer not null, >> primary key(bewerbungId, ursacheId) >> ); >> >> A "Bewerbung" can have many "Ursache". An "Ursache" can be a part of >> many "Bewerbung". This is saved in the table hr_herkunft. >> >> >> Classes: >> >> @Entity >> @Table(name = "hr_bewerbungen", schema="public") >> public class Bewerbung >> implements Serializable >> { >> @Id >> @SequenceGenerator(name="hr_bewerbungen_id_seq", allocationSize=1) >> @GeneratedValue(strategy=GenerationType.SEQUENCE, >> generator="hr_bewerbungen_id_seq") >> private Integer id; >> >> @ManyToMany >> @JoinTable >> ( >> name="hr_herkunft", >> joinColumns= >> @JoinColumn(name="bewerbungId", referencedColumnName="id"), >> inverseJoinColumns= >> @JoinColumn(name="ursacheId", referencedColumnName="id") >> ) >> private List<Ursache> ursachen = new ArrayList<Ursache>(); >> >> ... >> } >> >> @Entity >> @Table(name = "hr_ursachen", schema="public") >> public class Ursache >> implements Serializable >> { >> @Id >> private Integer id; >> ... >> } >> >> I need the information which "Ursache" a "Bewerbung" has. The other >> way round is not important. >> >> Any idea what I am doing wrong? >> >> Thanx in advance. >> >> Mihael >> _______________________________________________ >> eclipselink-users mailing list >> eclipselink-users@... >> https://dev.eclipse.org/mailman/listinfo/eclipselink-users > _______________________________________________ > eclipselink-users mailing list > eclipselink-users@... > https://dev.eclipse.org/mailman/listinfo/eclipselink-users _______________________________________________ eclipselink-users mailing list eclipselink-users@... https://dev.eclipse.org/mailman/listinfo/eclipselink-users |
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