在 python 中使用 callproc 调用包含记录集合的存储过程
Call stored procedure containing collection of records using callproc in python
我在 sql 中有一个存储过程:
PROCEDURE sp_add_object_tags(
pi_account_id IN user_files.account_id%TYPE,
pi_object_id IN object_metadata.object_id%TYPE,
pi_all_tags_identified IN VARCHAR2,
pi_object_tag_tbl IN object_tag_tbl,
po_error_code OUT NUMBER,
po_error_message OUT VARCHAR2 )
其中 object_tag_tbl 是 object_tag_rec
的集合
object_tag_rec 是具有以下字段(元素)的记录:
tag_type VARCHAR2(1),
tag_category VARCHAR2(100),
tag_key VARCHAR2(250),
tag_value VARCHAR2(250),
created_by VARCHAR2(50)
当我使用 callproc 调用上述存储过程时
object_tag_rec = collections.namedtuple('object_tag_rec',['tag_type','tag_category','tag_key', 'tag_value', 'created_by'])
rec_params1=object_tag_rec("S","person","person","1","abc")
params = [rec_params1]
cur_var = cur.callproc('tejfilusr.pg_object_tagging.sp_add_object_tags', [1234, 5678, 'N', params, po_error_code, po_error_message])
它给我一个错误 "element 0 value is unsupported"。
在 Python 中有什么方法可以做到这一点吗?
您不能直接使用 collections.namedtuple
作为 Oracle object 类型。
我在 Oracle Database 12c Enterprise Edition Release 12.2.0.1.0 上使用 Cx-Oracle-7.0.0
和 Python 3.6.4 对我有用。
创建类型
CREATE OR REPLACE TYPE object_tag_rec AS OBJECT (
tag_type VARCHAR2(1),
tag_category VARCHAR2(100),
tag_key VARCHAR2(250),
tag_value VARCHAR2(250),
created_by VARCHAR2(50)
);
/
创建collection
CREATE OR REPLACE TYPE object_tag_tbl is TABLE OF object_tag_rec;
/
创建过程
CREATE OR REPLACE procedure sp_add_object_tags(
pi_account_id IN INT,
pi_object_id IN INT,
pi_all_tags_identified IN VARCHAR2,
pi_object_tag_tbl IN object_tag_tbl,
po_error_code OUT NUMBER,
po_error_message OUT VARCHAR2 )
AS
BEGIN
po_error_code := 0;
po_error_message := 'NO ERRORS';
END;
/
代码
import cx_Oracle
conn = cx_Oracle.connect('user/pwd@//localhost:1521/dbname')
cur = conn.cursor()
recordTypeObj = conn.gettype("HR.OBJECT_TAG_REC") #mind the cases
tableTypeObj = conn.gettype("HR.OBJECT_TAG_TBL")
params = tableTypeObj.newobject()
rec = recordTypeObj.newobject()
(rec.TAG_TYPE,rec.TAG_CATEGORY,rec.TAG_KEY,rec.TAG_VALUE,rec.CREATED_BY) = ("S","person","person","1","abc")
#mind the cases for attributes.
po_error_code = cur.var(cx_Oracle.NUMBER)
po_error_message = cur.var(cx_Oracle.STRING)
params.append(rec)
cur.callproc('dbms_output.enable')
cur.callproc('hr.sp_add_object_tags', [1234, 5678, 'N', params, po_error_code, po_error_message])
print (po_error_code.getvalue(),po_error_message.getvalue())
执行
$python pass_obj.py
0.0 NO ERRORS
我在 sql 中有一个存储过程:
PROCEDURE sp_add_object_tags(
pi_account_id IN user_files.account_id%TYPE,
pi_object_id IN object_metadata.object_id%TYPE,
pi_all_tags_identified IN VARCHAR2,
pi_object_tag_tbl IN object_tag_tbl,
po_error_code OUT NUMBER,
po_error_message OUT VARCHAR2 )
其中 object_tag_tbl 是 object_tag_rec
的集合object_tag_rec 是具有以下字段(元素)的记录:
tag_type VARCHAR2(1),
tag_category VARCHAR2(100),
tag_key VARCHAR2(250),
tag_value VARCHAR2(250),
created_by VARCHAR2(50)
当我使用 callproc 调用上述存储过程时
object_tag_rec = collections.namedtuple('object_tag_rec',['tag_type','tag_category','tag_key', 'tag_value', 'created_by'])
rec_params1=object_tag_rec("S","person","person","1","abc")
params = [rec_params1]
cur_var = cur.callproc('tejfilusr.pg_object_tagging.sp_add_object_tags', [1234, 5678, 'N', params, po_error_code, po_error_message])
它给我一个错误 "element 0 value is unsupported"。 在 Python 中有什么方法可以做到这一点吗?
您不能直接使用 collections.namedtuple
作为 Oracle object 类型。
我在 Oracle Database 12c Enterprise Edition Release 12.2.0.1.0 上使用 Cx-Oracle-7.0.0
和 Python 3.6.4 对我有用。
创建类型
CREATE OR REPLACE TYPE object_tag_rec AS OBJECT (
tag_type VARCHAR2(1),
tag_category VARCHAR2(100),
tag_key VARCHAR2(250),
tag_value VARCHAR2(250),
created_by VARCHAR2(50)
);
/
创建collection
CREATE OR REPLACE TYPE object_tag_tbl is TABLE OF object_tag_rec;
/
创建过程
CREATE OR REPLACE procedure sp_add_object_tags(
pi_account_id IN INT,
pi_object_id IN INT,
pi_all_tags_identified IN VARCHAR2,
pi_object_tag_tbl IN object_tag_tbl,
po_error_code OUT NUMBER,
po_error_message OUT VARCHAR2 )
AS
BEGIN
po_error_code := 0;
po_error_message := 'NO ERRORS';
END;
/
代码
import cx_Oracle
conn = cx_Oracle.connect('user/pwd@//localhost:1521/dbname')
cur = conn.cursor()
recordTypeObj = conn.gettype("HR.OBJECT_TAG_REC") #mind the cases
tableTypeObj = conn.gettype("HR.OBJECT_TAG_TBL")
params = tableTypeObj.newobject()
rec = recordTypeObj.newobject()
(rec.TAG_TYPE,rec.TAG_CATEGORY,rec.TAG_KEY,rec.TAG_VALUE,rec.CREATED_BY) = ("S","person","person","1","abc")
#mind the cases for attributes.
po_error_code = cur.var(cx_Oracle.NUMBER)
po_error_message = cur.var(cx_Oracle.STRING)
params.append(rec)
cur.callproc('dbms_output.enable')
cur.callproc('hr.sp_add_object_tags', [1234, 5678, 'N', params, po_error_code, po_error_message])
print (po_error_code.getvalue(),po_error_message.getvalue())
执行
$python pass_obj.py
0.0 NO ERRORS