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PO@MappedSuperclass and @OneToMany
 

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    <p><a href="http://lancerx.republika.pl/images/onetoany.png" rel="nofollow">UML Diagram</a></p> <p>I need association OneToMany from Country to superclass Place (@MappedSuperclass). It could be bidirectional. I wolud need something like @OneToAny...</p> <pre><code>@MappedSuperclass public class Place { private String name; private Country country; @Column public String getName() { return name; } public void setName(String name) { this.name = name; } @ManyToOne @JoinColumn(name="country_id") public Country getCountry() { return country; } public void setCountry(Country country) { this.country = country; } } </code></pre> <p>Country:</p> <pre><code>@Entity public class Country { private long id; private String name; private List&lt;Place&gt; places; @Any(metaColumn = @Column(name = "place_type"), fetch = FetchType.EAGER) @AnyMetaDef(idType = "integer", metaType = "string", metaValues = { @MetaValue(value = "C", targetEntity = City.class), @MetaValue(value = "R", targetEntity = Region.class) }) @Cascade({ org.hibernate.annotations.CascadeType.ALL }) //@JoinColumn(name="unnecessary") //@OneToMany(mappedBy="country") // if this, NullPointerException... public List&lt;Place&gt; getPlaces() { return places; } //and rest of class </code></pre> <p>Without @JoinColunm there is exception</p> <pre><code>Caused by: org.hibernate.AnnotationException: @Any requires an explicit @JoinColumn(s): tour.spring.bc.model.vo.Country.places </code></pre> <p>In table City and Region is foreign key to table Country (Region.country_id, City.country_id) which is ok. But I do NOT need foreign key in table Country to tables Region and City so I don't need @JoinColum.</p> <p>I was looking for solution a lot but it seems there is no good solution.</p>
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Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

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