JPA 常见@OneToMany,@ManyToOne,@OneToOne映射

 

JPA 常见@OneToMany,@ManyToOne,@OneToOne映射

 

	@ManyToOne(fetch = FetchType.EAGER, optional = true)
    //@JoinColumn(name="to_loc_no",referencedColumnName="life_cycle", insertable = false, updatable = false)
    @JoinColumns ({
            @JoinColumn(name="to_dept_no",referencedColumnName = "life_cycle",insertable = false, updatable = false),
            @JoinColumn(name="to_loc_no",referencedColumnName = "oid",insertable = false, updatable = false)
    })
	//to_dept_no, to_loc_no is in epoDetail table
	//life_cycle, oid is in epoHeader table
    private EpoHeader epoHeader;
	
	
	
	
	
	@OneToMany(fetch = FetchType.EAGER)
    //@JoinColumn(name="to_loc_no",referencedColumnName="life_cycle", insertable = false, updatable = false)
    @JoinColumns ({
            @JoinColumn(name="to_dept_no",referencedColumnName = "life_cycle",insertable = false, updatable = false),
            @JoinColumn(name="to_loc_no",referencedColumnName = "oid",insertable = false, updatable = false)
    })
	//to_dept_no, to_loc_no is in epoDetail table
	//life_cycle, oid is in epoHeader table
    private List<EpoDetail> epoDetails;
	
	@OneToOne(fetch = FetchType.EAGER, optional = true)
    @JoinColumns ({
            @JoinColumn(name="form_no",referencedColumnName = "form_no",insertable = false, updatable = false),
            @JoinColumn(name="form_type",referencedColumnName = "form_type",insertable = false, updatable = false)
    })
	//name="form_no", name="form_type" is in epoHeader
	//referencedColumnName = "form_no", referencedColumnName = "form_type" is in EpoForklift
    private EpoForklift epoForklift;
	
	@OneToMany(fetch = FetchType.EAGER)
	// forklift_oid is in EpoForklift
	// oid is in EpoForkliftSetup
    @JoinColumn(name = "oid", referencedColumnName = "forklift_oid", insertable = false, updatable = false)
    private List<EpoForkliftSetup> epoForkliftConfigs;