Question

我想用JPA对此查询执行语义同等的操作：

INSERT INTO second_table(second_id, second_name, audit_cre_at, audit_cre_from)
SELECT first_id, first_name, audit_cre_at, audit_cre_from
FROM FIRST_TABLE f
WHERE f.FIRST_VALID = 1;

DELETE FROM FIRST_TABLE WHERE FIRST_VALID = 1;

在那些桌子上：

CREATE TABLE FIRST_TABLE(
  FIRST_ID          RAW(16)                                   NOT NULL CONSTRAINT FIRST_PK PRIMARY KEY,
  FIRST_NAME        VARCHAR2(2000),
  FIRST_VALID       NUMBER(1)                                 NOT NULL,
  AUDIT_CRE_AT      TIMESTAMP(0) DEFAULT CURRENT_TIMESTAMP    NOT NULL,
  AUDIT_CRE_FROM    VARCHAR2(32) DEFAULT 'system'             NOT NULL,
  CONSTRAINT SECOND_VALID CHECK (SECOND_VALID IN (0,1))
);

CREATE TABLE SECOND_TABLE(
  SECOND_ID          RAW(16)                                 NOT NULL CONSTRAINT SECOND_PK PRIMARY KEY,
  SECOND_NAME        VARCHAR2(2000),
  AUDIT_CRE_AT       TIMESTAMP(0) DEFAULT CURRENT_TIMESTAMP  NOT NULL,
  AUDIT_CRE_FROM     VARCHAR2(32) DEFAULT 'system'           NOT NULL,
);

这是我的FirstTable实体：

@Entity
@Table(name = "FIRST_TABLE")
public class FirstTable{
    @Id
    @NotNull
    @Convert("UuidConverter")
    @Column(name = "FIRST_ID")
    private UUID id;

    @Column(name = "FIRST_NAME")
    private String name;

    @NotNull
    @Column(name = "FIRST_VALID")
    private int valid;

    @NotNull
    @Temporal(TIMESTAMP)
    @Column(name = "AUDIT_CRE_AT")
    private Date createdTime;

    @NotNull
    @Column(name = "AUDIT_CRE_FROM")
    private String creator;
}

这是我的SecondTable实体：

@Entity
@Table(name = "SECOND_TABLE")
public class SecondTable{
    @Id
    @NotNull
    @Convert("UuidConverter")
    @Column(name = "SECOND_ID")
    private UUID id;

    @Column(name = "SECOND_NAME")
    private String name;

    @NotNull
    @Temporal(TIMESTAMP)
    @Column(name = "AUDIT_CRE_AT")
    private Date createdTime;

    @NotNull
    @Column(name = "AUDIT_CRE_FROM")
    private String creator;
}

我想在我的FirstTable实体中执行此操作。所以我想我必须设置一个SecondaryTable来访问它：

@Entity
@Table(name = "FIRST_TABLE")
@SecondaryTable(name = "SECOND_TABLE")
@NamedQuery(...)
public class FirstTable

我不想执行上面提到的查询，但我宁愿用JPA执行类似的操作（结果应该像查询一样）。我怎么能这样做？

使用JPA INSERT INTO另一个实体

0 个答案: