--

-- --.

  1. JPA, ݟ .

  2. ݟ > . JPA ( ) ޟ.

  3. ݟ JPA.

    ؞
    . ޟ ޟ @OneToOne.
    ޟ . null

    , ޟ ޟ ޟ ؟ .

    כ . " " .
    • ֟

    ݟ כ .

  4. ݟ JPA.

    ؞
    . ݟ ޟ @JoinColum.

    ؞ , ֟ .

    ؞, ޟ .

Eclipse ݟ:

@OneToOne(targetEntity=<TARGET_ENTITY>, cascade=CascadeType.<CASCADE_TYPE>, 
    fetch = FetchType.<FETCH_TYPE>, mappedBy = "<MAPPED_BY>")
@JoinColumn(name="<JOIN_COLUMN_NAME>", referencedColumnName=
    "<JOIN_COLUMN_REFERENCED_COLUMN>", insertable = <INSERTABLE>, 
    updatable = <UPDATABLE>)

 



 



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EJB 3.0 Java Persistence API