Question

我想执行将Partnership（1）链接到合作伙伴的JPA查询（许多）。我希望指定的合作伙伴关系和指定年份的所有合作伙伴。

查询1 - 不起作用，将所有合作伙伴带回所有年份

query = "SELECT p FROM Partnership p"
  + " JOIN p.partners prt"
  + " WHERE prt.id.prtSchemeYear=:sYear"
  + " AND p.pspHerd=:herd")

查询2 - 也不起作用 - 同样所有合作伙伴都返回，而只有2015年要求

query = "select distinct p from Partnership p"
      + " JOIN p.partners prt with (prt.id.prtSchemeYear=:sYear)"
      + " WHERE p.pspHerd=:herd")

{result - Partners for all years returned even though 2015 specified in :sYear, yes, restricted by herd using pk psp_cust_id

ONE - 合作伙伴 private long pspCustId; {这是PK（即）@Id） private String pspHerd; private Set partners = new HashSet（0）

@OneToMany(fetch = FetchType.EAGER, mappedBy = "partnership")
public Set<Partner> getPartners() {
    return this.partners;
}

MANY - 合作伙伴 私人PartnerId id; {复合PK类} 私人业主ownerPyPrtPreviousOwnId; 私营伙伴关系; 私人业主ownerPyOwnId; 私人长期prtHolding;

@EmbeddedId
@AttributeOverrides({
@AttributeOverride(name = "prtSchemeYear", column = @Column(name =
  "PRT_SCHEME_YEAR", nullable = false, precision = 4, scale = 0)),
@AttributeOverride(name = "prtHerd", column = @Column(name = "PRT_HERD",
    nullable = false, length = 8)),
@AttributeOverride(name = "prtOwnId", column = @Column(name = 
    "PRT_OWN_ID", nullable = false, precision = 10, scale = 0)) })
    public PartnerId getId() {
        return this.id;
}

PK等级 合作伙伴ID @Embeddable public class PartnerId实现java.io.Serializable { 私人短期prtSchemeYear; private String prtHerd; private long prtOwnId;

我试过的命名查询 - 与指定牛群和年份的合作伙伴建立合作伙伴关系（2015）

T_PARTNERS的结果SQL不包括仅限年份psp_cust_id（这是一个外键）的任何限制

谢谢你能提供帮助

JPA查询 - OnetoMany对多方

0 个答案: