[英]Getting pl/sql array of struct from stored procedure using JdbcSimpleCall
我試圖使用SimpleJDBCCall執行oracle存儲過程,所有表和存儲過程都在餐廳模式中,表如下所示:
CREATE TABLE STAFF
(
STAFF_ID NUMBER(5),
STAFF_FIRST_NAME VARCHAR2(10 BYTE) NOT NULL,
STAFF_LAST_NAME VARCHAR2(20 BYTE) NOT NULL,
STAFF_ROLE VARCHAR2(20 BYTE) NOT NULL,
STAFF_OTHER_DETAILS VARCHAR2(50 BYTE)
);
我的類型包:
CREATE OR REPLACE PACKAGE Staff_Types
AS
TYPE Staff_Collection IS TABLE OF Staff%ROWTYPE;
END Staff_Types;
我的訪問包:
CREATE OR REPLACE PACKAGE Staff_TAPI
AS
FUNCTION getAllStaff RETURN Staff_Types.Staff_Collection;
END Staff_TAPI;
CREATE OR REPLACE PACKAGE BODY Staff_Tapi
AS
FUNCTION getAllStaff
RETURN Staff_Types.Staff_Collection
IS
all_staff Staff_Types.Staff_Collection;
BEGIN
SELECT *
BULK COLLECT INTO all_staff
FROM Staff;
RETURN all_staff;
END;
END Staff_Tapi;
Java訪問:
@Component
@Qualifier("staffJdbcDAO")
public class StaffJDBCDAO implements StaffDAO {
JdbcTemplate jdbcTemplate;
SimpleJdbcCall getAllMembersSP;
@Autowired
@Qualifier("dataSource")
DataSource dataSource;
@Autowired
@Qualifier("jdbcTemplate")
public void setJdbcTemplate(JdbcTemplate jdbcTemplate) {
this.jdbcTemplate = jdbcTemplate;
initializeStoredProceduresCalls();
}
private void initializeStoredProceduresCalls() {
getAllMembersSP = new SimpleJdbcCall(jdbcTemplate);
getAllMembersSP.withCatalogName("Staff_Tapi");
getAllMembersSP.withFunctionName("getAllStaff");
getAllMembersSP.declareParameters(
new SqlOutParameter("return",
Types.OTHER,
"Staff_Types.Staff_Collection",
new SqlReturnStructArray<>( new StaffMapper() )
)
);
getAllMembersSP.compile();
}
@Override
public List<Staff> getAllMembers() {
Staff[] staff = getAllMembersSP.executeFunction(Staff[].class,new HashMap<String,Object>() );
return Arrays.asList(staff);
}
}
映射類:
public class StaffMapper implements StructMapper<Staff> {
@Override
public STRUCT toStruct(Staff staff, Connection connection, String typeName) throws SQLException {
StructDescriptor descriptor = StructDescriptor.createDescriptor(typeName, connection);
Object[] attributes = new Object[5];
attributes[0] = new Integer( staff.getId() );
attributes[1] = new String("STAFF_FIRST_NAME");
attributes[2] = new String("STAFF_LAST_NAME");
attributes[3] = new String("STAFF_ROLE");
attributes[4] = new String("STAFF_OTHER_DETAILS");
Struct staffStruct = connection.createStruct(typeName,attributes);
return new STRUCT(descriptor,connection,attributes);
}
@Override
public Staff fromStruct(STRUCT struct) throws SQLException {
StructDescriptor descriptor = struct.getDescriptor();
ResultSetMetaData metaData = descriptor.getMetaData();
Object[] attributes = struct.getAttributes();
Map<String,Object> attributeMap = new HashMap<>();
int idx = 1;
for ( Object attribute : attributes )
attributeMap.put( metaData.getColumnName(idx++),attribute );
int id = ((Integer)attributeMap.get("STAFF_ID")).intValue();
String firstName = (String) attributeMap.get("STAFF_FIRST_NAME");
String lastName = (String) attributeMap.get("STAFF_LAST_NAME");
String staffRole = (String) attributeMap.get("STAFF_ROLE");
String otherDetails = (String) attributeMap.get("STAFF_OTHER_DETAILS");
return new Staff(id,firstName,lastName,staffRole,otherDetails);
}
}
和員工:
public class Staff {
private int id;
private String firstName;
private String lastName;
private String profession;
private String otherDetails;
public Staff(int id, String firstName, String lastName, String profession, String otherDetails) {
this.id = id;
this.firstName = firstName;
this.lastName = lastName;
this.profession = profession;
this.otherDetails = otherDetails;
}
public int getId() {
return id;
}
public int setId(int id) {
this.id = id;
}
// and others getters and setters
}
當我從StaffDAO執行getAllMembers時,即時獲得:CallableStatementCallback; 未分類的SQLException for SQL [{? =呼叫STAFF_TAPI.GETALLSTAFF()}]; SQL狀態[99999]; 錯誤代碼[17004]; 無效的列類型:1111;
當我將返回類型參數更改為Types.Array時,我得到:CallableStatementCallback; 未分類的SQLException for SQL [{? =呼叫STAFF_TAPI.GETALLSTAFF()}]; SQL狀態[99999]; 錯誤代碼[17074];
無效的名稱模式:restaurant.Staff_Types.Staff_Collection;
我以兩種方式嘗試了“ Staff_Types.Staf_collection”模式,得到了相同的結果,即時通訊試圖將近2天不知道該怎么辦,如果有人有任何建議,我將不勝感激。
為了輕松集成您的PL / SQL調用,並且它已經作為函數構建,您是否考慮過類似的事情?
select * from TABLE(CAST(Staff_Tapi.getAllStaff() as Staff_Types.Staff_Collection))
這樣,您可以輕松地將其作為常規JDBC查詢執行。 完成后,只需處理ResultSet
並使用fromStruct
方法的一些較小變體即可返回ResultSet
,以便將List<Staff>
列表返回到其之上的任何業務邏輯。 希望你覺得這個有用!
您不能通過JDBC從存儲過程中加載PL / SQL record
。 實際上,您甚至無法從Oracle SQL加載此類。 另請參閱此問題以獲取詳細信息:
您只能通過JDBC加載SQL類型(與PL / SQL類型相反)。 給定您的示例,您需要編寫:
-- You cannot really avoid this redundancy
CREATE TYPE STAFF AS OBJECT
(
STAFF_ID NUMBER(5),
STAFF_FIRST_NAME VARCHAR2(10 BYTE) NOT NULL,
STAFF_LAST_NAME VARCHAR2(20 BYTE) NOT NULL,
STAFF_ROLE VARCHAR2(20 BYTE) NOT NULL,
STAFF_OTHER_DETAILS VARCHAR2(50 BYTE)
);
CREATE TYPE STAFF_TABLE AS TABLE OF STAFF;
接着:
CREATE OR REPLACE PACKAGE Staff_TAPI
AS
FUNCTION getAllStaff RETURN STAFF_TABLE;
END Staff_TAPI;
您可能需要在Java代碼中使用大寫的自定義類型,例如
getAllMembersSP.declareParameters(
new SqlOutParameter("return",
Types.OTHER,
"STAFF_TYPES.STAFF_COLLECTION",
new SqlReturnStructArray<>( new StaffMapper() )
)
);
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