One-to-many mapping

Use a One-to-Many Mapping to define a relationship with one-to-many multiplicity.

In the JPA Structure view, select the field to map.
Right-click the field and then select Map As > One-to-many. The JPA Details view (for attributes) displays the properties for the selected.

JPA Details, One-to-many Mapping
Complete each field in the One-to-Many Mapping area.
Complete the remaining areas in the JPA Details view (for attributes):

Eclipse adds the following annotations to the field:

@OneToMany(targetEntity=<TARGET_ENTITY>)
@Column(name="<COLUMN>")


@OneToMany(targetEntity=<TARGET_ENTITY>.class, 
    =Type.<_TYPE>, 
    fetch = FetchType.<FETCH_TYPE>, 
    mappedBy = "<MAPPED_BY>"
)@OrderBy("<ORDER_BY>")
@JoinTable(name="<JOIN_TABLE_NAME>", joinColumns=@JoinColumn(name=
    "<JOIN_COLUMN_NAME>", referencedColumnName="<JOIN_COLUMN_REFERENCED_COLUMN>"), 
    inverseJoinColumns=@JoinColumn(name="<INVERSE_JOIN_COLUMN_NAME>", 
    referencedColumnName="<INVERSE_JOIN_COLUMN_REFERENCED_COLUMN>"))

Related tasks

Mapping an entity

Related references

Related concepts