June 2018
Intermediate to advanced
596 pages
12h 39m
English
Content preview from Java EE 8 Development with Eclipse
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Configuring many-to-one relationships
With Course.java open in the editor, click on the JPA Details tab in the lower window (just below the editor window). In Course.java, click on the teacher member variable. The JPA Details tab shows the details of this attribute:
Figure 4.24: JPA details of an entity attribute
Target entity is auto-selected (as Teacher) because we have marked Teacher as an entity and the type of the teacher field is Teacher.
However, Eclipse has assumed a one-to-one relationship between Course and Teacher, which is not correct. There is a many-to-one relationship between Course and Teacher. To change this, click on the ...