class Exporter(object):
""" ORACLE卸数插件
Attributes:
__args : 参数
__target_db_info : 目标库信息(字典)
__db_oper : 数据库连接类实例
"""
def __init__(self, args, target_db_info):
self.__args = args
self.__target_db_info = target_db_info
self.__export_lines = 0
self.__db_oper = DbOperator(self.__target_db_info['db_user'],
self.__target_db_info['db_pwd'],
JDBC_CLASS,
self.__target_db_info['jdbc_url'])
def __get_table_struct(self):
""" 获取目标表表结构
Args:
Returns:
[0, 结构信息] : 成功 | [-1, []] : 失败
Raise:
"""
sql = "" # sql语句
columns_info = [] # 字段信息
result_info = [] # 结果信息
LOG.info("获取表[{0}]的结构".format(self.__args.table))
sql = ("SELECT"
"\n UPPER(TRIM(T1.COLUMN_NAME)) AS COLUMN_NAME,"
"\n UPPER(TRIM(T1.DATA_TYPE)) AS DATA_TYPE,"
"\n T1.DATA_SCALE AS DATA_SCALE,"
"\n T1.DATA_PRECISION AS DATA_PRECISION,"
"\n T1.CHAR_LENGTH AS CHAR_LENGTH,"
"\n T1.DATA_LENGTH AS DATA_LENGTH,"
"\n (CASE"
"\n WHEN T1.NULLABLE = 'N' THEN '0'"
"\n ELSE '1'"
"\n END) AS IS_NULL,"
"\n (CASE"
"\n WHEN T2.KEY_COL IS NULL THEN '0'"
"\n ELSE '1'"
"\n END) AS IS_PK,"
"\n T3.COLUMN_DESC AS COLUMN_DESC,"
"\n T4.TABLE_DESC AS TABLE_DESC"
"\nFROM ALL_TAB_COLUMNS T1 "
"\nLEFT JOIN ( "
"\n SELECT A.COLUMN_NAME AS KEY_COL "
"\n FROM USER_CONS_COLUMNS A, USER_CONSTRAINTS B"
"\n WHERE A.CONSTRAINT_NAME = B.CONSTRAINT_NAME"
"\n AND B.CONSTRAINT_TYPE = 'P' "
"\n AND UPPER(A.OWNER) = '{0}' "
"\n AND UPPER(A.TABLE_NAME) = '{1}' "
"\n) T2 "
"\nON T1.COLUMN_NAME = T2.KEY_COL "
"\nLEFT JOIN ( "
"\n SELECT COLUMN_NAME,Comments AS COLUMN_DESC "
"\n FROM ALL_COL_COMMENTS "
"\n WHERE UPPER(OWNER) = '{0}' "
"\n AND UPPER(TABLE_NAME) = '{1}' "
"\n) T3 "
"\nON T1.COLUMN_NAME = T3.COLUMN_NAME "
"\nLEFT JOIN ( "
"\n SELECT COMMENTS AS TABLE_DESC "
"\n FROM ALL_TAB_COMMENTS "
"\n WHERE UPPER(OWNER) = '{0}' "
"\n AND UPPER(TABLE_NAME) = '{1}' "
"\n) T4 "
"\nON 1 = 1 "
"\nWHERE UPPER(OWNER) = '{0}' "
"\n AND UPPER(TABLE_NAME) = '{1}' "
"\nORDER BY COLUMN_ID ").format(
self.__target_db_info['db_schema'].upper(),
self.__args.table.upper())
LOG.info("SQL:\n{0}".format(sql))
try:
result_info = self.__db_oper.fetchall_direct(sql)
except Exception as e:
LOG.error("获取表[{0}]的结构失败".format(self.__args.table))
return -1, []
if len(result_info) == 0:
LOG.error(("无法查询到目标表的表结构,请检查表是否存在," "或者配置是否正确"))
return -1, []
LOG.debug("表结构查询结果:\n{0}".format(result_info))
for i in range(len(result_info)):
column_info = {} # 字段信息
column_name = result_info[i][0] # 字段名
data_type = result_info[i][1] # 字段类型
column_define_length = 0 # 字段类型中定义的长度
# None结果区分,取整
if result_info[i][2] != None:
data_scale = int(result_info[i][2])
column_scale = data_scale
else:
data_scale = result_info[i][2]
column_scale = 0
if result_info[i][3] != None:
data_precision = int(result_info[i][3])
else:
data_precision = result_info[i][3]
if result_info[i][4] != None:
char_length = int(result_info[i][4])
else:
char_length = result_info[i][4]
if result_info[i][5] != None:
data_length = int(result_info[i][5])
else:
data_length = result_info[i][5]
is_null = result_info[i][6] # 是否可空
is_pk = result_info[i][7] # 是否主键
if result_info[i][8] == None:
column_desc = ''
else:
column_desc = result_info[i][9] # 字段描述
if result_info[i][9] == None:
table_desc = ''
else:
table_desc = result_info[i][9] # 表描述
# 调整类型,生成通用类型
if data_type == "CHAR" or data_type == "VARCHAR2":
column_base_type = "VARCHAR"
column_length = data_length
column_define_length = data_length
column_type = "{0}({1})".format(data_type, data_length)
if data_type == "CHAR":
column_std_type = "{0}!anc".format(column_length)
else:
column_std_type = "anc..{0}".format(column_length)
elif data_type == "NCHAR" or data_type == "NVARCHAR2":
column_base_type = "NVARCHAR"
column_define_length = data_length
column_type = "{0}({1})".format(data_type, char_length)
if self.__args.charset == "1":
column_length = char_length * 3
else:
column_length = char_length * 2
if data_type == "NCHAR":
column_std_type = "{0}!anc".format(column_length)
else:
column_std_type = "anc..{0}".format(column_length)
elif data_type == "NUMBER":
if data_scale != None:
column_base_type = "NUMERIC"
if data_scale == 0:
if data_precision == None:
column_length = 38 + 1
column_std_type = "19n"
column_type = "NUMBER"
column_define_length = data_length
else:
column_length = data_precision + 1
column_std_type = "{0}n".format(data_precision)
column_type = "NUMBER({0})".format(data_precision)
column_define_length = data_precision
else:
column_length = data_precision + 2
column_define_length = data_precision
column_std_type = "{0}n({1})".format(
data_precision + 1, data_scale)
column_type = "NUMBER({0},{1})".format(
data_precision, data_scale)
else:
column_base_type = "NUMERIC0"
column_length = 38 + 2
column_std_type = "19n"
column_type = "NUMBER(38)"
elif data_type == "FLOAT":
column_base_type = "FLOAT"
if data_precision == None:
data_precision = 38
else:
column_define_length = data_precision
column_length = math.ceil(
data_precision * math.log(2) / math.log(10)) + 2
column_std_type = "39n(10)"
column_type = "FLOAT"
elif data_type == "BINARY_FLOAT":
column_base_type = "FLOAT"
column_length = 38 + 2
column_std_type = "39n(10)"
column_type = "BINARY_FLOAT"
elif data_type == "BINARY_DOUBLE":
column_base_type = "FLOAT"
column_length = 38 + 2
column_std_type = "39n(10)"
column_type = "BINARY_DOUBLE"
elif data_type == "DATE":
column_base_type = "DATE"
column_length = 10
column_std_type = "YYYY-MM-DD"
if self.__args.dtfmt == "YYYY-MM-DDTHH:MI:SS":
column_length = 19
column_std_type = "YYYY-MM-DDTHH:MM:SS"
column_type = data_type
elif data_type == "CLOB" or data_type == "BLOB":
column_base_type = data_type
column_length = 4000
column_std_type = data_type
column_type = data_type
elif data_type == "UROWID" or data_type == "ROWID":
column_base_type = data_type
column_length = 18
column_std_type = "anc..18"
column_type = data_type
else:
match_obj = re.match(r"TIMESTAMP\((.*?)\)", data_type)
if match_obj:
tmp_val = match_obj.group(1)
if tmp_val == "0":
column_length = 19
column_std_type = "YYYY-MM-DDTHH:MM:SS"
column_type = "TIMESTAMP(0)"
elif tmp_val == "3":
column_length = 23
column_std_type = "YYYY-MM-DDTHH:MM:SS.NNN"
column_type = "TIMESTAMP(3)"
elif tmp_val == "6":
column_length = 26
column_std_type = "YYYY-MM-DDTHH:MM:SS.NNNNNN"
column_type = "TIMESTAMP(6)"
else:
data_type = "TIMESTAMP(6)"
column_type = "TIMESTAMP(6)"
column_base_type = data_type
column_scale = 0
data_type = "TIMESTAMP"
column_define_length = int(tmp_val)
else:
column_type = data_type
match_obj = re.match(r"^LONG", data_type)
if match_obj:
column_base_type = "LONG"
column_std_type = "anc..10"
column_length = 10
else:
match_obj = re.match(r"^RAW", data_type)
if match_obj:
column_base_type = "RAW"
column_std_type = "anc..10"
column_length = 10
else:
column_base_type = data_type
column_std_type = data_type
column_length = data_length
column_info['column_name'] = column_name
column_info['column_base_type'] = column_base_type
column_info['data_type'] = data_type
column_info['column_type'] = column_type
column_info['column_length'] = column_length
column_info['column_define_length'] = column_define_length
column_info['column_scale'] = column_scale
column_info['column_std_type'] = column_std_type
column_info['is_null'] = is_null
column_info['is_pk'] = is_pk
column_info['partition_flag'] = "0"
column_info['bucket_flag'] = "0"
column_info['column_desc'] = column_desc
column_info['table_desc'] = table_desc
column_info['fixed'] = self.__args.fixed
column_info['rcdelim'] = self.__args.rcdelim
column_info['delim'] = self.__args.delim
column_info['table_name'] = self.__args.table
column_info['quote_type'] = "0"
if self.__args.enddel == "N" and i == len(result_info) - 1:
column_info['delim'] = ""
columns_info.append(column_info)
LOG.debug("调整后的结果:\n{0}".format(columns_info))
return 0, columns_info
def __get_export_sql(self, columns_info):
""" 获取卸数SQL
Args:
columns_info : 字段信息
Returns:
Raise:
"""
LOG.info("生成卸数的SQL")
def_date = "'1900-01-01'" # 默认日期值
def_time = "'00:00:00'" # 默认时间值
# 默认时间戳(6位毫秒)
def_timestamp6 = "'1900-01-01 00:00:00.000000'"
# 默认时间戳(3位毫秒)
def_timestamp3 = "'1900-01-01 00:00:00.000'"
# 默认时间戳(无毫秒)
def_timestamp = "'1900-01-01 00:00:00'"
def_string = "' '" # 默认字符串
def_number = "'0'" # 默认数值
def_time_format = "'HH24:MI:SS'" # 默认时间格式
def_date_format = "'YYYY-MM-DD'" # 默认日期格式
# 默认时间戳格式(无毫秒)
def_timestamp_format = "'YYYY-MM-DD HH24:MI:SS'"
# 默认时间戳格式(3位毫秒)
def_timestamp_format3 = "'YYYY-MM-DD HH24:MI:SS.FF3'"
# 默认时间戳格式(6位毫秒)
def_timestamp_format6 = "'YYYY-MM-DD HH24:MI:SS.FF6'"
if self.__args.dtfmt == "YYYY-MM-DDTHH:MM:SS":
def_date_format = def_timestamp_format
use_data_type = "" # 默认转换字符类型
use_data_type_n = "" # 默认转换Unicode字符类型
default_null_val = "" # 默认空值
export_sql = "" # 卸数sql
export_columns_list = [] # 卸数字段列表
export_column_sql_list = [] # 卸数字段级sql
# 设定分隔符替换的字符串
# 每个字符替换成一个空格
replace_delim = re.sub(r"\S", "#", self.__args.delim)
# 定长不定长判断
if self.__args.fixed == "1":
use_data_type = "CHAR"
use_data_type_n = "NCHAR"
default_null_val = "' '"
else:
use_data_type = "VARCHAR2"
use_data_type_n = "NVARCHAR2"
default_null_val = "''"
# 指定字段卸数
if self.__args.selcol:
select_columns_list = self.__args.selcol.upper()
LOG.info("校验用户指定的卸数字段")
for select_column in select_columns_list.split(","):
is_include = "0"
for column_info in columns_info:
if select_column == column_info["column_name"]:
is_include = "1"
break
if is_include == "0":
LOG.error("指定卸载的字段不存在:[{0}]".format(select_column))
return -1, ''
else:
export_columns_list.append(select_column)
else:
for column_info in columns_info:
export_columns_list.append(column_info["column_name"])
LOG.info("卸数字段列表:{0}".format(export_columns_list))
# 根据字段类型生成每个字段对应的sql
for export_column in export_columns_list:
for src_column_info in columns_info:
if export_column != src_column_info["column_name"]:
continue
# 定长卸载时不支持长度大于2000
if (self.__args.fixed == "1"
and src_column_info["column_length"] > 2000):
LOG.error(("ORACLE卸数格式为定长且字段长度超过2000,"
"字段:{0}").format(column_name))
return -1, ''
if self.__args.setdef == "Y":
if src_column_info['column_base_type'] == "DATE":
export_column_sql_list.append(
("CAST( CASE WHEN {0} IS NULL THEN {1} "
"ELSE TO_CHAR({0},{2}) END AS {3}({4}) )").format(
export_column, def_date, def_date_format,
use_data_type,
src_column_info["column_length"]))
elif src_column_info['column_base_type'] == "FLOAT":
export_column_sql_list.append(
("CASE WHEN {0} IS NULL OR {0} = 0 THEN '0.00' "
"ELSE CASE WHEN TRUNC({0}) = 0 THEN "
"CASE WHEN {0} < 0 THEN '-0' || "
"SUBSTR({0}, INSTR({0}, '.')) "
"ELSE '0' || CAST({0} AS VARCHAR(40)) END "
"ELSE CAST({0} AS VARCHAR(40)) END END"
).format(export_column))
elif src_column_info['column_base_type'] == "TIMESTAMP(3)":
export_column_sql_list.append(
("CAST(CASE WHEN {0} IS NULL THEN {1} "
"ELSE TO_CHAR({0},{2}) END AS {3}({4}))").format(
export_column, def_timestamp3,
def_timestamp_format3, use_data_type,
src_column_info["column_length"]))
elif src_column_info['column_base_type'] == "TIMESTAMP(6)":
export_column_sql_list.append(
("CAST(CASE WHEN {0} IS NULL THEN {1} "
"ELSE TO_CHAR({0},{2}) END AS {3}({4}))").format(
export_column, def_timestamp6,
def_timestamp_format6, use_data_type,
src_column_info["column_length"]))
elif src_column_info['column_base_type'] == "TIMESTAMP(0)":
export_column_sql_list.append(
("CAST(CASE WHEN {0} IS NULL THEN {1} "
"ELSE TO_CHAR({0},{2}) END AS {3}({4}))").format(
export_column, def_timestamp,
def_timestamp_format, use_data_type,
src_column_info["column_length"]))
elif (src_column_info['column_base_type'] == "NCHAR"
or src_column_info['column_base_type'] == "NVARCHAR"
or src_column_info['column_base_type']
== "NVARCHAR2"):
if self.__args.repdel == "Y":
tmp_str = ("REPLACE({0}, '{1}', '{2}')").format(
export_column, self.__args.delim,
replace_delim)
else:
tmp_str = export_column
if self.__args.trimflg == "0":
tmp_str = "TRIM({0})".format(tmp_str)
elif self.__args.trimflg == "1":
tmp_str = "RTRIM({0})".format(tmp_str)
if self.__args.repflg == "Y":
tmp_str = ("REPLACE(REPLACE({0}, CHR(10),' ')"
", CHR(13), ' ')").format(tmp_str)
export_column_sql_list.append(
("CASE WHEN {0} IS NULL OR {0} ='' THEN "
"CAST({1} AS NVARCHAR2(10)) ELSE {0} END").format(
tmp_str, def_string))
elif (src_column_info['column_base_type'] == "NUMERIC" or
src_column_info['column_base_type'] == "NUMERIC0"):
if self.__args.trimflg == "0":
export_column_sql_list.append((
"CASE WHEN {0} IS NULL OR {0} = 0 THEN "
"CAST({1} AS {2}({3})) ELSE CASE WHEN {0} = 0 "
"THEN CAST(TRIM("
"CAST({0} AS {2}({3}))) AS {2}({3})) ELSE "
"CASE WHEN TRUNC({0}) = 0 THEN "
"CASE WHEN {0} < 0 THEN '-0' || "
"SUBSTR({0}, INSTR({0}, '.')) WHEN {0} = 0 "
"THEN CAST(TRIM("
"CAST({0} AS {2}({3}))) AS {2}({3})) "
"ELSE '0' || CAST(TRIM("
"CAST({0} AS {2}({3}))) AS {2}({3})) END ELSE "
"CAST(TRIM(CAST({0} AS {2}({3}))) AS {2}({3})) "
"END END END").format(
export_column, def_number, use_data_type,
src_column_info["column_length"]))
elif self.__args.trimflg == "1":
export_column_sql_list.append((
"CASE WHEN {0} IS NULL OR {0} = 0 THEN "
"CAST({1} AS {2}({3})) ELSE CASE WHEN {0} = 0 "
"THEN CAST(RTRIM("
"CAST({0} AS {2}({3}))) AS {2}({3})) ELSE "
"CASE WHEN TRUNC({0}) = 0 THEN "
"CASE WHEN {0} < 0 THEN '-0' || "
"SUBSTR({0}, INSTR({0}, '.')) WHEN {0} = 0 "
"THEN CAST(RTRIM("
"CAST({0} AS {2}({3}))) AS {2}({3})) "
"ELSE '0' || CAST(RTRIM("
"CAST({0} AS {2}({3}))) AS {2}({3})) END ELSE "
"CAST(RTRIM(CAST({0} AS {2}({3}))) AS {2}({3})) "
"END END END").format(
export_column, def_number, use_data_type,
src_column_info["column_length"]))
else:
export_column_sql_list.append((
"CASE WHEN {0} IS NULL OR {0} = 0 THEN "
"CAST({1} AS {2}({3})) ELSE CASE WHEN {0} = 0 "
"THEN CAST("
"CAST({0} AS {2}({3})) AS {2}({3})) ELSE "
"CASE WHEN TRUNC({0}) = 0 THEN "
"CASE WHEN {0} < 0 THEN '-0' || "
"SUBSTR({0}, INSTR({0}, '.')) WHEN {0} = 0 "
"THEN CAST("
"CAST({0} AS {2}({3})) AS {2}({3})) "
"ELSE '0' || CAST("
"CAST({0} AS {2}({3})) AS {2}({3})) END ELSE "
"CAST(CAST({0} AS {2}({3})) AS {2}({3})) "
"END END END").format(
export_column, def_number, use_data_type,
src_column_info["column_length"]))
elif (src_column_info['column_base_type'] == "CHAR"
or src_column_info['column_base_type'] == "VARCHAR"
or src_column_info['column_base_type']
== "VARCHAR2"):
if self.__args.repdel == "Y":
tmp_str = ("REPLACE({0}, '{1}', '{2}')").format(
export_column, self.__args.delim,
replace_delim)
else:
tmp_str = export_column
if self.__args.trimflg == "0":
tmp_str = "TRIM({0})".format(tmp_str)
elif self.__args.trimflg == "1":
tmp_str = "RTRIM({0})".format(tmp_str)
if self.__args.repflg == "Y":
tmp_str = ("REPLACE(REPLACE({0}, CHR(10),' ')"
", CHR(13), ' ')").format(tmp_str)
export_column_sql_list.append(
("CASE WHEN NVL({0},'\|\@\|') = '\|\@\|' "
"THEN CAST({1} AS {2}({3})) ELSE "
"CAST({0} AS {2}({3})) END").format(
tmp_str, def_string, use_data_type,
src_column_info["column_length"]))
elif (src_column_info['column_base_type'] == "BLOB"
or src_column_info['column_base_type'] == "LONG"
or src_column_info['column_base_type'] == "RAW"):
export_column_sql_list.append(
"CAST ( '' AS VARCHAR(10) )")
else:
export_column_sql_list.append(
("CASE WHEN {0} IS NULL THEN "
"CAST({1} AS {2}({3})) ELSE "
"CAST({0} AS {2}({3})) END").format(
export_column, def_string, use_data_type,
src_column_info["column_length"]))
else:
if src_column_info['column_base_type'] == "DATE":
export_column_sql_list.append(
"CAST( TO_CHAR({0}, {1}) AS {2}({3}) )".format(
export_column, def_date_format, use_data_type,
src_column_info["column_length"]))
elif src_column_info['column_base_type'] == "FLOAT":
export_column_sql_list.append(
("CASE WHEN {0} IS NULL THEN {1} ELSE "
"CASE WHEN {0} = 0 THEN "
"CAST(TO_CHAR({0}) AS VARCHAR(40)) ELSE "
"CASE WHEN TRUNC({0}) = 0 THEN "
"CASE WHEN {0} < 0 THEN '-0' || "
"SUBSTR({0}, INSTR({0}, '.')) WHEN {0} = 0 THEN "
"CAST(TO_CHAR({0}) AS VARCHAR(40)) ELSE '0' || "
"CAST(TO_CHAR({0}) AS VARCHAR(40)) END ELSE "
"CAST(TO_CHAR({0}) AS VARCHAR(40)) "
"END END END").format(export_column,
default_null_val))
elif src_column_info['column_base_type'] == "TIMESTAMP(3)":
export_column_sql_list.append(
"CAST( TO_CHAR({0},{1}) AS {2}({3}))".format(
export_column, def_timestamp_format3,
use_data_type,
src_column_info["column_length"]))
elif src_column_info['column_base_type'] == "TIMESTAMP(6)":
export_column_sql_list.append(
"CAST( TO_CHAR({0},{1}) AS {2}({3}))".format(
export_column, def_timestamp_format6,
use_data_type,
src_column_info["column_length"]))
elif src_column_info['column_base_type'] == "TIMESTAMP(0)":
export_column_sql_list.append(
"CAST( TO_CHAR({0},{1}) AS {2}({3}))".format(
export_column, def_timestamp_format,
use_data_type,
src_column_info["column_length"]))
elif (src_column_info['column_base_type'] == "NCHAR"
or src_column_info['column_base_type'] == "NVARCHAR"
or src_column_info['column_base_type']
== "NVARCHAR2"):
if self.__args.repdel == "Y":
tmp_str = ("REPLACE({0}, '{1}', '{2}')").format(
export_column, self.__args.delim,
replace_delim)
else:
tmp_str = export_column
if self.__args.trimflg == "0":
tmp_str = "TRIM({0})".format(tmp_str)
elif self.__args.trimflg == "1":
tmp_str = "RTRIM({0})".format(tmp_str)
if self.__args.repflg == "Y":
tmp_str = ("REPLACE(REPLACE({0}, CHR(10),' ')"
", CHR(13), ' ')").format(tmp_str)
export_column_sql_list.append("{0}".format(
tmp_str, def_string))
elif (src_column_info['column_base_type'] == "NUMERIC" or
src_column_info['column_base_type'] == "NUMERIC0"):
if self.__args.trimflg == "0":
export_column_sql_list.append((
"CASE WHEN {0} IS NULL THEN "
"CAST({1} AS {2}({3})) ELSE CASE WHEN {0} = 0 "
"THEN CAST(TRIM("
"CAST({0} AS {2}({3}))) AS {2}({3})) ELSE "
"CASE WHEN TRUNC({0}) = 0 THEN "
"CASE WHEN {0} < 0 THEN '-0' || "
"SUBSTR({0}, INSTR({0}, '.')) WHEN {0} = 0 "
"THEN CAST(TRIM("
"CAST({0} AS {2}({3}))) AS {2}({3})) "
"ELSE '0' || CAST(TRIM("
"CAST({0} AS {2}({3}))) AS {2}({3})) END ELSE "
"CAST(TRIM(CAST({0} AS {2}({3}))) AS {2}({3})) "
"END END END").format(
export_column, default_null_val,
use_data_type,
src_column_info["column_length"]))
elif self.__args.trimflg == "1":
export_column_sql_list.append((
"CASE WHEN {0} IS NULL THEN "
"CAST({1} AS {2}({3})) ELSE CASE WHEN {0} = 0 "
"THEN CAST(RTRIM("
"CAST({0} AS {2}({3}))) AS {2}({3})) ELSE "
"CASE WHEN TRUNC({0}) = 0 THEN "
"CASE WHEN {0} < 0 THEN '-0' || "
"SUBSTR({0}, INSTR({0}, '.')) WHEN {0} = 0 "
"THEN CAST(RTRIM("
"CAST({0} AS {2}({3}))) AS {2}({3})) "
"ELSE '0' || CAST(RTRIM("
"CAST({0} AS {2}({3}))) AS {2}({3})) END ELSE "
"CAST(RTRIM(CAST({0} AS {2}({3}))) AS {2}({3})) "
"END END END").format(
export_column, default_null_val,
use_data_type,
src_column_info["column_length"]))
else:
export_column_sql_list.append((
"CASE WHEN {0} IS NULL THEN "
"CAST({1} AS {2}({3})) ELSE CASE WHEN {0} = 0 "
"THEN CAST("
"CAST({0} AS {2}({3})) AS {2}({3})) ELSE "
"CASE WHEN TRUNC({0}) = 0 THEN "
"CASE WHEN {0} < 0 THEN '-0' || "
"SUBSTR({0}, INSTR({0}, '.')) WHEN {0} = 0 "
"THEN CAST("
"CAST({0} AS {2}({3})) AS {2}({3})) "
"ELSE '0' || CAST("
"CAST({0} AS {2}({3})) AS {2}({3})) END ELSE "
"CAST(CAST({0} AS {2}({3})) AS {2}({3})) "
"END END END").format(
export_column, default_null_val,
use_data_type,
src_column_info["column_length"]))
elif (src_column_info['column_base_type'] == "CHAR"
or src_column_info['column_base_type'] == "VARCHAR"
or src_column_info['column_base_type']
== "VARCHAR2"):
if self.__args.repdel == "Y":
tmp_str = ("REPLACE({0}, '{1}', '{2}')").format(
export_column, self.__args.delim,
replace_delim)
else:
tmp_str = export_column
if self.__args.trimflg == "0":
tmp_str = "TRIM({0})".format(tmp_str)
elif self.__args.trimflg == "1":
tmp_str = "RTRIM({0})".format(tmp_str)
if self.__args.repflg == "Y":
tmp_str = ("REPLACE(REPLACE({0}, CHR(10),' ')"
", CHR(13), ' ')").format(tmp_str)
export_column_sql_list.append(
"CAST({0} AS {1}({2}))".format(
tmp_str, use_data_type,
src_column_info["column_length"]))
elif (src_column_info['column_base_type'] == "BLOB"
or src_column_info['column_base_type'] == "LONG"
or src_column_info['column_base_type'] == "RAW"):
export_column_sql_list.append(
"CAST ( '' AS VARCHAR(10) )")
else:
export_column_sql_list.append(
"CAST({0} AS {1}({2}))".format(
export_column, use_data_type,
src_column_info["column_length"]))
export_column_sql = "\n,".join(export_column_sql_list)
export_sql = ("SELECT "
"\n{0}"
"\nFROM {1}.{2}"
"\nWHERE {3}").format(export_column_sql,
self.__target_db_info['db_schema'],
self.__args.table,
self.__args.filt)
return 0, export_sql
def __get_table_records(self):
""" 获取表记录数
Args:
Returns:
[0, 记录数] : 成功 | [-1, ''] : 失败
Raise:
"""
export_table_records = 0 # 表记录数
filt = self.__args.filt.upper() # 过滤条件
LOG.info("获取目标表记录数")
# 根据过滤条件生成获取记录数的sql
match_obj = re.match(r"\sROWNUM", filt, re.I)
if match_obj:
sql = ("SELECT COUNT(1) AS CNT"
"\nFROM (SELECT 1 AS NAME FROM {0}.{1} "
"\nWHERE {2}) TMP_TAB").format(
self.__target_db_info['db_schema'], self.__args.table,
filt)
else:
sql = ("SELECT COUNT(*) AS CNT"
"\nFROM {0}.{1}"
"\nWHERE {2}").format(self.__target_db_info['db_schema'],
self.__args.table, filt)
LOG.info("SQL:\n{0}".format(sql))
try:
result_info = self.__db_oper.fetchall_direct(sql)
except Exception as e:
LOG.error("获取表[{0}]的记录数失败".format(self.__args.table))
return -1, []
export_table_records = int(result_info[0][0])
LOG.info("目标表的记录数为:{0}".format(export_table_records))
return 0, export_table_records
def __generate_export_file(self, export_sql, columns_info,
export_table_records):
""" 生成卸数目标文件
Args:
export_sql : 卸数sql
columns_info : 字段信息
export_table_records : 卸数表记录数
Returns:
[0, 字段数] : 成功 | [-1, ''] : 失败
Raise:
"""
LOG.info("执行卸数SQL")
# 检查文件
ret = check_path(self.__args.outfile)
if ret == -1:
return -1
charset = ""
try:
if self.__args.charset == "1":
charset = "UTF-8"
else:
charset = "GBK"
DATA_FILE = codecs.open(self.__args.outfile, "w", charset)
except Exception as e:
traceback.print_exc()
LOG.error("打开数据文件失败")
return -1
# 执行卸数sql,写输出文件
LOG.info("SQL:\n{0}".format(export_sql))
try:
self.__db_oper.connect()
while 1:
line_result_info = self.__db_oper.fetchone(export_sql)
if line_result_info:
line_str = ""
for i in range(len(line_result_info)):
if line_result_info[i] != None:
column_value = line_result_info[i]
else:
column_value = ""
if i != len(line_result_info) - 1:
line_str = "{0}{1}{2}".format(
line_str, column_value, self.__args.delim)
else:
line_str = "{0}{1}".format(line_str, column_value)
if self.__args.enddel == "Y":
line_str = "{0}{1}{2}".format(line_str,
self.__args.delim,
self.__args.rcdelim)
else:
line_str = "{0}{1}".format(line_str,
self.__args.rcdelim)
DATA_FILE.write(line_str)
self.__export_lines = self.__export_lines + 1
else:
break
self.__db_oper.close()
except Exception as e:
traceback.print_exc()
LOG.error("获取表[{0}]的记录数失败".format(self.__args.table))
self.__db_oper.close()
DATA_FILE.close()
return -1, []
DATA_FILE.close()
LOG.info("生成目标文件:{0}".format(self.__args.outfile))
LOG.info("卸载文件记录数:{0}".format(self.__export_lines))
if self.__args.ddlfile:
LOG.info("生成目标DDL文件:{0}".format(self.__args.ddlfile))
version = "V1.0"
ret = generate_ddl_file(self.__args.ddlfile, version,
self.__args.table, self.__args.fixed,
columns_info, charset, "ORACLE",
self.__args.selcol, self.__args.rcdelim)
if ret != 0:
return -1
if self.__args.ctlfile:
LOG.info("生成目标CTRL文件:{0}".format(self.__args.ctlfile))
ret = generate_ctrl_file(self.__args.ctlfile, self.__args.outfile,
export_table_records, "ORACLE",
self.__args.charset)
if ret != 0:
return -1
return 0
def run(self):
""" 卸数主函数
Args:
Returns:
0 : 成功 | -1 : 失败
Raise:
"""
ret = 0 # 状态变量
export_table_records = 0 # 卸数表记录数
columns_info = [] # 字段信息
# 获取表结构
ret, columns_info = self.__get_table_struct()
if ret != 0:
return -1, 0, 0
# 获取表记录数
ret, export_table_records = self.__get_table_records()
if ret != 0:
return -1, 0, 0
# 获取卸数SQL
ret, export_sql = self.__get_export_sql(columns_info)
if ret != 0:
return -1, 0, 0
# 执行卸数sql,生成目标卸数文件
ret = self.__generate_export_file(export_sql, columns_info,
export_table_records)
if ret != 0:
return -1, 0, 0
# 更新DDL信息(通用类型DDL表和元数据表)
try:
ddl_operator = DdlOperator()
except Exception as e:
return -1, 0, 0
ret = ddl_operator.load_ddl_direct(self.__args.proid,
self.__args.tableid, columns_info)
if ret != 0:
return -1, 0, 0
return 0, self.__export_lines, export_table_records
class Exporter(object):
""" SQLSERVER卸数插件
注:没有使用官方JDBC驱动
测试发现使用官方驱动无法在linux下连接windows的服务器
官方驱动无法实现linux与windows服务器的安全认证
ATTributes:
__args : 参数
__target_db_info : 目标库信息(字典)
__db_oper : 数据库连接实例
"""
def __init__(self, args, target_db_info):
self.__args = args
self.__target_db_info = target_db_info
self.__export_lines = 0
self.__db_oper = DbOperator(self.__target_db_info['db_user'],
self.__target_db_info['db_pwd'],
JDBC_CLASS,
self.__target_db_info['jdbc_url'])
def __get_table_struct(self):
""" 获取目标表表结构
Args:
Returns:
[0, 结构信息] : 成功 | [-1, []] : 失败
Raise:
"""
sql = "" # sql语句
columns_info = [] # 字段信息
result_info = [] # 结果信息
LOG.info("获取表[{0}]的结构".format(self.__args.table))
sql = ("SELECT"
"\n UPPER(T1.COLUMN_NAME) AS COLUMN_NAME,"
"\n UPPER(T1.DATA_TYPE) AS DATA_TYPE,"
"\n T1.NUMERIC_SCALE AS NUMERIC_SCALE,"
"\n T1.NUMERIC_PRECISION AS NUMERIC_PRECISION,"
"\n T1.DATETIME_PRECISION AS DATETIME_PRECISION,"
"\n T1.CHARACTER_OCTET_LENGTH AS CHARACTER_OCTET_LENGTH,"
"\n (CASE "
"\n WHEN T1.IS_NULLABLE = 'YES' THEN '1' "
"\n ELSE '0' "
"\n END) AS IS_NULL,"
"\n (CASE "
"\n WHEN T2.COLUMN_NAME IS NULL THEN '0' "
"\n ELSE '1' "
"\n END) AS IS_PK,"
"\n '' AS COLUMN_DESC,"
"\n '' AS TABLE_DESC "
"\nFROM "
"\n ( "
"\n SELECT TT1.*, TT2.TABLE_TYPE"
"\n FROM INFORMATION_SCHEMA.COLUMNS TT1, "
"\n INFORMATION_SCHEMA.TABLES TT2"
"\n WHERE TT1.TABLE_SCHEMA=TT2.TABLE_SCHEMA "
"\n AND TT1.TABLE_NAME=TT2.TABLE_NAME"
"\n AND UPPER(TT1.TABLE_SCHEMA)='{0}'"
"\n AND UPPER(TT2.TABLE_NAME)='{1}'"
"\n )T1"
"\n LEFT JOIN"
"\n ("
"\n SELECT TT1.TABLE_SCHEMA, TT1.TABLE_NAME, "
"\n TT2.CONSTRAINT_NAME, TT2.COLUMN_NAME"
"\n FROM INFORMATION_SCHEMA.TABLE_CONSTRAINTS TT1, "
"\n INFORMATION_SCHEMA.CONSTRAINT_COLUMN_USAGE TT2"
"\n WHERE TT1.TABLE_SCHEMA=TT2.TABLE_SCHEMA "
"\n AND TT1.TABLE_CATALOG=TT2.TABLE_CATALOG"
"\n AND TT1.TABLE_NAME=TT2.TABLE_NAME"
"\n AND TT1.CONSTRAINT_NAME=TT2.CONSTRAINT_NAME"
"\n AND UPPER(TT1.CONSTRAINT_TYPE)='PRIMARY KEY'"
"\n AND UPPER(TT1.TABLE_SCHEMA)='{0}'"
"\n AND UPPER(TT1.TABLE_NAME)='{1}'"
"\n )T2"
"\nON T1.TABLE_SCHEMA=T2.TABLE_SCHEMA "
"\n AND T1.TABLE_NAME = T2.TABLE_NAME "
"\n AND UPPER(T1.COLUMN_NAME) = UPPER(T2.COLUMN_NAME)"
"\nWHERE UPPER(T1.TABLE_SCHEMA)='{0}'"
"\n AND UPPER(T1.TABLE_NAME)='{1}'"
"\nORDER BY T1.ORDINAL_POSITION").format(
self.__target_db_info['db_schema'].upper(),
self.__args.table.upper())
LOG.info("SQL:\n{0}".format(sql))
try:
result_info = self.__db_oper.fetchall_direct(sql)
except Exception as e:
LOG.error("获取表[{0}]的结构失败".format(self.__args.table))
return -1, []
if len(result_info) == 0:
LOG.error(("无法查询到目标表的表结构,请检查表是否存在," "或者配置是否正确"))
return -1, []
LOG.debug("表结构查询结果:\n{0}".format(result_info))
for i in range(len(result_info)):
column_info = {} # 字段信息
column_name = result_info[i][0] # 字段名
data_type = result_info[i][1] # 数据类型(不带长度)
column_define_length = 0 # 字段类型中定义的长度
# None结果区分,取整
if result_info[i][2] != None:
numeric_scale = int(result_info[i][2])
else:
numeric_scale = 0
if result_info[i][3] != None:
numeric_precision = int(result_info[i][3])
else:
numeric_precision = 0
if result_info[i][4] != None:
datetime_precision = int(result_info[i][4])
else:
datetime_precision = 0
char_length = result_info[i][5]
is_null = result_info[i][6] # 是否可空
is_pk = result_info[i][7] # 是否主键
column_desc = result_info[i][8] # 字段描述
table_desc = result_info[i][9] # 表描述
# 调整类型,生成通用类型
if (data_type == "CHAR" or data_type == "VARCHAR"
or data_type == "BINARY" or data_type == "VARBINARY"):
column_base_type = "VARCHAR"
column_length = char_length
column_type = "{0}({1})".format(data_type, char_length)
if data_type == "CHAR" or data_type == "BINARY":
column_std_type = "{0}!anc".format(char_length)
else:
column_std_type = "anc..{0}".format(char_length)
column_define_length = char_length
elif data_type == "TIMESTAMP":
# 注意sqlserver的timestamp类型和别的库的时间戳类型不同
column_base_type = "TIMESTAMP"
column_type = "TIMESTAMP"
column_std_type = "8!anc"
column_length = 8
elif (data_type == "NCHAR" or data_type == "NVARCHAR"):
column_base_type = "NVARCHAR"
column_length = char_length
data_length = char_length / 2
column_type = "{0}({1})".format(data_type, data_length)
if data_type == "NCHAR":
column_std_type = "{0}!anc".format(data_length)
else:
column_std_type = "anc..{0}".format(data_length)
column_define_length = char_length
elif (data_type == "TINYINT" or data_type == "SMALLINT"
or data_type == "INT" or data_type == "BIT"
or data_type == "BIGINT"):
column_base_type = "NUMERIC0"
column_length = numeric_precision + 1
column_type = data_type
if data_type == "BIT":
column_std_type = "1"
if data_type == "TINYINT":
column_std_type = "3n"
elif data_type == "SMALLINT":
column_std_type = "5n"
elif data_type == "MEDIUMINT":
column_std_type = "7n"
elif data_type == "INT":
column_std_type = "10n"
elif data_type == "BIGINT":
column_std_type = "19n"
elif (data_type == "DECIMAL" or data_type == "NUMERIC"
or data_type == "MONEY" or data_type == "SMALLMONEY"):
column_base_type = "NUMERIC0"
column_length = numeric_precision + 2
if numeric_scale > 0:
column_type = "{0}({1}, {2})".format(
data_type, numeric_precision, numeric_scale)
column_std_type = "{0}n".format(numeric_precision)
else:
column_type = "{0}({1})".format(data_type,
numeric_precision)
column_std_type = "{0}n".format(numeric_precision)
column_define_length = numeric_precision
elif data_type == "FLOAT" or data_type == "REAL":
column_base_type = data_type
column_type = data_type
column_length = 38 + 2
column_std_type = "39n(10)"
elif data_type == "DATE":
column_base_type = data_type
column_type = "DATE"
column_length = 10
column_std_type = "YYYY-MM-DD"
elif data_type == "TIME":
column_base_type = data_type
column_type = "TIME"
column_length = 8
column_std_type = "HH:MM:SS"
elif data_type == "DATETIME" or data_type == "DATETIME2":
column_base_type = "TIMESTAMP(3)"
column_type = data_type
column_length = 23
column_std_type = "YYYY-MM-DDTHH:MM:SS.NNN"
elif data_type == "DATETIMEOFFSET":
column_type = "DATETIMEOFFSET({0})".format(numeric_precision)
if numeric_precision == "0":
column_base_type = "TIMESTAMP(0)"
column_length = 20
column_std_type = "YYYY-MM-DDTHH:MM:SS"
else:
column_base_type = "TIMESTAMP(3)"
column_length = 23
column_std_type = "YYYY-MM-DDTHH:MM:SS.NNN"
column_define_length = numeric_precision
elif data_type == "IMAGE":
column_base_type = "BLOB"
column_type = data_type
column_length = 4000
column_std_type = "BLOB"
elif data_type == "TEXT" or data_type == "NTEXT":
column_base_type = "CLOB"
column_type = data_type
column_length = 4000
column_std_type = "CLOB"
else:
column_base_type = data_type
column_type = data_type
column_length = char_length
column_std_type = data_type
column_info['column_name'] = column_name
column_info['column_base_type'] = column_base_type
column_info['data_type'] = data_type
column_info['column_type'] = column_type
column_info['column_length'] = column_length
column_info['column_define_length'] = column_define_length
column_info['column_scale'] = numeric_scale
column_info['column_std_type'] = column_std_type
column_info['is_null'] = is_null
column_info['is_pk'] = is_pk
column_info['partition_flag'] = "0"
column_info['bucket_flag'] = "0"
column_info['column_desc'] = column_desc
column_info['table_desc'] = table_desc
column_info['fixed'] = self.__args.fixed
column_info['rcdelim'] = self.__args.rcdelim
column_info['delim'] = self.__args.delim
column_info['table_name'] = self.__args.table
column_info['quote_type'] = "0"
if self.__args.enddel == "N" and i == len(result_info) - 1:
column_info['delim'] = ""
columns_info.append(column_info)
LOG.debug("调整后的结果:\n{0}".format(columns_info))
return 0, columns_info
def __get_export_sql(self, columns_info):
""" 获取卸数SQL
Args:
columns_info : 字段信息
Returns:
Raise:
"""
LOG.info("生成卸数的SQL")
def_date = "'1900-01-01'" # 默认日期值
def_time = "'00:00:00'" # 默认时间值
# 默认时间戳(3位毫秒)
def_timestamp3 = "'1900-01-01 00:00:00.000'"
# 默认时间戳(无毫秒)
def_timestamp = "'1900-01-01 00:00:00'"
def_string = "' '" # 默认字符串
def_number = "'0'" # 默认数值
use_data_type = "" # 默认转换字符类型
default_null_val = "" # 默认空值
export_sql = "" # 卸数sql
export_columns_list = [] # 卸数字段列表
export_column_sql_list = [] # 卸数字段级sql
# 设定分隔符替换的字符串
# 每个字符替换成一个空格
replace_delim = re.sub(r"\S", "#", self.__args.delim)
# 定长不定长判断
if self.__args.fixed == "1":
use_data_type = "CHAR"
default_null_val = "' '"
else:
use_data_type = "VARCHAR"
default_null_val = "''"
# 指定字段卸数
if self.__args.selcol:
select_columns_list = self.__args.selcol.upper()
LOG.info("校验用户指定的卸数字段")
for select_column in select_columns_list.split(","):
is_include = "0"
for column_info in columns_info:
if select_column == column_info["column_name"]:
is_include = "1"
break
if is_include == "0":
LOG.error("指定卸载的字段不存在:[{0}]".format(select_column))
return -1, ''
else:
export_columns_list.append(select_column)
else:
for column_info in columns_info:
export_columns_list.append(column_info["column_name"])
LOG.info("卸数字段列表:{0}".format(export_columns_list))
# 根据字段类型生成每个字段对应的sql
i = 0
for export_column in export_columns_list:
for src_column_info in columns_info:
if export_column != src_column_info["column_name"]:
continue
if self.__args.setdef == "Y":
if src_column_info['column_base_type'] == "DATE":
export_column_sql_list.append(
("CASE WHEN {0} IS NULL THEN {1} "
"ELSE CONVERT(CHAR(10), {0}) END ").format(
export_column, def_date))
elif src_column_info['column_base_type'] == "TIME":
export_column_sql_list.append(
("CASE WHEN {0} IS NULL THEN {1} "
"ELSE CONVERT(CHAR(8), {0}) END ").format(
export_column, def_time))
elif (src_column_info['column_base_type'] == "FLOAT"
or src_column_info['column_base_type'] == "REAL"):
export_column_sql_list.append(
("CASE WHEN {0} IS NULL THEN "
"CONVERT({1}({2}), '0.00') ELSE "
"CONVERT({1}({2}), {0}) END").format(
export_column, use_data_type,
src_column_info["column_length"]))
elif src_column_info['column_base_type'] == "TIMESTAMP(3)":
export_column_sql_list.append(
("CASE WHEN {0} IS NULL THEN "
"CONVERT(CHAR(23), {1}, 21) "
"ELSE CONVERT(CHAR(23), {0}, 21) END ").format(
export_column, def_timestamp3))
elif src_column_info['column_base_type'] == "TIMESTAMP(0)":
export_column_sql_list.append(
("CASE WHEN {0} IS NULL THEN "
"CONVERT(CHAR(20), {1}, 20) "
"ELSE CONVERT(CHAR(20), {0}, 20) END ").format(
export_column, def_timestamp))
elif src_column_info['column_base_type'] == "NUMERIC0":
export_column_sql_list.append(
("CASE WHEN {0} IS NULL THEN "
"CONVERT({1}({2}), {3}) "
"ELSE CONVERT({1}({2}), {0}) END ").format(
export_column, use_data_type,
src_column_info["column_length"], def_number))
elif src_column_info['column_base_type'] == "NUMERIC":
export_column_sql_list.append(
("CASE WHEN {0} IS NULL THEN "
"CONVERT({1}({2}), 0.0) "
"ELSE CONVERT({1}({2}), {0}) END ").format(
export_column, use_data_type,
src_column_info["column_length"]))
elif (src_column_info['column_base_type'] == "VARCHAR"
or src_column_info['column_base_type'] == "CHAR"
or src_column_info['column_base_type'] == "NCHAR" or
src_column_info['column_base_type'] == "NVARCHAR"):
if self.__args.repdel == "Y":
tmp_str = ("REPLACE({0}, '{1}', '{2}')").format(
export_column, self.__args.delim,
replace_delim)
else:
tmp_str = export_column
if self.__args.trimflg == "0":
tmp_str = "TRIM({0})".format(tmp_str)
elif self.__args.trimflg == "1":
tmp_str = "RTRIM({0})".format(tmp_str)
if self.__args.repflg == "Y":
tmp_str = ("REPLACE(REPLACE({0}, CHAR(10),' ')"
", CHAR(13), ' ')").format(tmp_str)
export_column_sql_list.append(
("CASE WHEN {0} IS NULL THEN "
"CONVERT({1}({2}), {3}) "
"ELSE CONVERT({1}({2}), {4}) END").format(
export_column, use_data_type,
src_column_info["column_length"], def_string,
tmp_str))
elif (src_column_info['column_base_type'] == "BLOB"
or src_column_info['column_base_type'] == "CLOB"):
export_column_sql_list.append("'' ")
else:
if self.__args.trimflg == "0":
export_column_sql_list.append(
("CASE WHEN {0} IS NULL THEN "
"CONVERT({1}({2}), {3}) "
"ELSE TRIM(CONVERT({1}({2}), {0})) END"
).format(export_column, use_data_type,
src_column_info["column_length"],
def_string))
elif self.__args.trimflg == "1":
export_column_sql_list.append(
("CASE WHEN {0} IS NULL THEN "
"CONVERT({1}({2}), {3}) "
"ELSE RTRIM(CONVERT({1}({2}), {0})) END"
).format(export_column, use_data_type,
src_column_info["column_length"],
def_string))
else:
export_column_sql_list.append(
("CASE WHEN {0} IS NULL THEN "
"CONVERT({1}({2}), {3}) "
"ELSE CONVERT({1}({2}), {0}) END").format(
export_column, use_data_type,
src_column_info["column_length"],
def_string))
else:
if src_column_info['column_base_type'] == "DATE":
export_column_sql_list.append(
("CASE WHEN {0} IS NULL THEN {1} "
"ELSE CONVERT(CHAR(10), {0}) END ").format(
export_column, default_null_val))
elif src_column_info['column_base_type'] == "TIME":
export_column_sql_list.append(
("CASE WHEN {0} IS NULL THEN {1} "
"ELSE CONVERT(CHAR(8), {0}) END ").format(
export_column, default_null_val))
elif (src_column_info['column_base_type'] == "FLOAT"
or src_column_info['column_base_type'] == "REAL"):
export_column_sql_list.append(
("CASE WHEN {0} IS NULL THEN "
"CONVERT({1}({2}), {3}) ELSE "
"CONVERT({1}({2}), {0}) END").format(
export_column, use_data_type,
src_column_info["column_length"],
default_null_val))
elif src_column_info['column_base_type'] == "TIMESTAMP(3)":
export_column_sql_list.append(
("CASE WHEN {0} IS NULL THEN "
"CONVERT(CHAR(23), {1}, 21) "
"ELSE CONVERT(CHAR(23), {0}, 21) END ").format(
export_column, default_null_val))
elif src_column_info['column_base_type'] == "TIMESTAMP(0)":
export_column_sql_list.append(
("CASE WHEN {0} IS NULL THEN "
"CONVERT(CHAR(20), {1}, 20) "
"ELSE CONVERT(CHAR(20), {0}, 20) END ").format(
export_column, default_null_val))
elif src_column_info['column_base_type'] == "NUMERIC0":
export_column_sql_list.append(
("CASE WHEN {0} IS NULL THEN "
"CONVERT({1}({2}), {3}) "
"ELSE CONVERT({1}({2}), {0}) END ").format(
export_column, use_data_type,
src_column_info["column_length"],
default_null_val))
elif src_column_info['column_base_type'] == "NUMERIC":
export_column_sql_list.append(
("CASE WHEN {0} IS NULL THEN "
"CONVERT({1}({2}), {3}) "
"ELSE CONVERT({1}({2}), {0}) END ").format(
export_column, use_data_type,
src_column_info["column_length"],
default_null_val))
elif (src_column_info['column_base_type'] == "VARCHAR"
or src_column_info['column_base_type'] == "CHAR"
or src_column_info['column_base_type'] == "NCHAR" or
src_column_info['column_base_type'] == "NVARCHAR"):
if self.__args.repdel == "Y":
tmp_str = ("REPLACE({0}, '{1}', '{2}')").format(
export_column, self.__args.delim,
replace_delim)
else:
tmp_str = export_column
if self.__args.trimflg == "0":
tmp_str = "TRIM({0})".format(tmp_str)
elif self.__args.trimflg == "1":
tmp_str = "RTRIM({0})".format(tmp_str)
if self.__args.repflg == "Y":
tmp_str = ("REPLACE(REPLACE({0}, CHAR(10),' ')"
", CHAR(13), ' ')").format(tmp_str)
export_column_sql_list.append(
("CASE WHEN {0} IS NULL THEN "
"CONVERT({1}({2}), {3}) "
"ELSE CONVERT({1}({2}), {4}) END").format(
export_column, use_data_type,
src_column_info["column_length"],
default_null_val, tmp_str))
elif (src_column_info['column_base_type'] == "BLOB"
or src_column_info['column_base_type'] == "CLOB"):
export_column_sql_list.append("'' ")
else:
if self.__args.trimflg == "0":
export_column_sql_list.append(
("CASE WHEN {0} IS NULL THEN "
"CONVERT({1}({2}), {3}) "
"ELSE TRIM(CONVERT({1}({2}), {0})) END"
).format(export_column, use_data_type,
src_column_info["column_length"],
default_null_val))
elif self.__args.trimflg == "1":
export_column_sql_list.append(
("CASE WHEN {0} IS NULL THEN "
"CONVERT({1}({2}), {3}) "
"ELSE RTRIM(CONVERT({1}({2}), {0})) END"
).format(export_column, use_data_type,
src_column_info["column_length"],
default_null_val))
else:
export_column_sql_list.append(
("CASE WHEN {0} IS NULL THEN "
"CONVERT({1}({2}), {3}) "
"ELSE CONVERT({1}({2}), {0}) END").format(
export_column, use_data_type,
src_column_info["column_length"],
default_null_val))
export_column_sql = "\n,".join(export_column_sql_list)
export_sql = ("SELECT "
"\n{0}"
"\nFROM {1}.{2}"
"\nWHERE {3}").format(export_column_sql,
self.__target_db_info['db_schema'],
self.__args.table,
self.__args.filt)
return 0, export_sql
def __get_table_records(self):
""" 获取表记录数
Args:
Returns:
[0, 记录数] : 成功 | [-1, ''] : 失败
Raise:
"""
export_table_records = 0 # 表记录数
filt = self.__args.filt.upper() # 过滤条件
LOG.info("获取目标表记录数")
# 根据过滤条件生成获取记录数的sql
match_obj = re.match(r"\sLIMIT\s+\d+$", filt, re.I)
if match_obj:
sql = ("SELECT COUNT(1) AS CNT"
"\nFROM (SELECT 1 AS NAME FROM {0}.{1} "
"\nWHERE {2}) TMP_TAB").format(
self.__target_db_info['db_schema'], self.__args.table,
filt)
else:
sql = ("SELECT COUNT(*) AS CNT"
"\nFROM {0}.{1}"
"\nWHERE {2}").format(self.__target_db_info['db_schema'],
self.__args.table, filt)
LOG.info("SQL:\n{0}".format(sql))
try:
result_info = self.__db_oper.fetchall_direct(sql)
except Exception as e:
LOG.error("获取表[{0}]的记录数失败".format(self.__args.table))
return -1, []
export_table_records = int(result_info[0][0])
LOG.info("目标表的记录数为:{0}".format(export_table_records))
return 0, export_table_records
def __generate_export_file(self, export_sql, columns_info,
export_table_records):
""" 生成卸数目标文件
Args:
export_sql : 卸数sql
columns_info : 字段信息
export_table_records : 卸数表记录数
Returns:
[0, 字段数] : 成功 | [-1, ''] : 失败
Raise:
"""
LOG.info("执行卸数SQL")
# 检查文件
ret = check_path(self.__args.outfile)
if ret == -1:
return -1
charset = ""
try:
if self.__args.charset == "1":
charset = "UTF-8"
else:
charset = "GBK"
DATA_FILE = codecs.open(self.__args.outfile, "w", charset)
except Exception as e:
traceback.print_exc()
LOG.error("打开数据文件失败")
return -1
# 执行卸数sql,写输出文件
LOG.info("SQL:\n{0}".format(export_sql))
try:
self.__db_oper.connect()
while 1:
line_result_info = self.__db_oper.fetchone(export_sql)
if line_result_info:
line_str = ""
for i in range(len(line_result_info)):
if line_result_info[i] != None:
column_value = line_result_info[i]
else:
column_value = ""
if i != len(line_result_info) - 1:
line_str = "{0}{1}{2}".format(
line_str, column_value, self.__args.delim)
else:
line_str = "{0}{1}".format(line_str, column_value)
if self.__args.enddel == "Y":
line_str = "{0}{1}{2}".format(line_str,
self.__args.delim,
self.__args.rcdelim)
else:
line_str = "{0}{1}".format(line_str,
self.__args.rcdelim)
DATA_FILE.write(line_str)
self.__export_lines = self.__export_lines + 1
else:
break
self.__db_oper.close()
except Exception as e:
traceback.print_exc()
LOG.error("获取表[{0}]的记录数失败".format(self.__args.table))
self.__db_oper.close()
DATA_FILE.close()
return -1, []
DATA_FILE.close()
LOG.info("生成目标文件:{0}".format(self.__args.outfile))
LOG.info("卸载文件记录数:{0}".format(self.__export_lines))
if self.__args.ddlfile:
LOG.info("生成目标DDL文件:{0}".format(self.__args.ddlfile))
version = "V1.0"
ret = generate_ddl_file(self.__args.ddlfile, version,
self.__args.table, self.__args.fixed,
columns_info, charset, "SQLSERVER",
self.__args.selcol, self.__args.rcdelim)
if ret != 0:
return -1
if self.__args.ctlfile:
LOG.info("生成目标CTRL文件:{0}".format(self.__args.ctlfile))
ret = generate_ctrl_file(self.__args.ctlfile, self.__args.outfile,
export_table_records, "SQLSERVER",
self.__args.charset)
if ret != 0:
return -1
return 0
def run(self):
""" 卸数主函数
Args:
Returns:
0 : 成功 | -1 : 失败
Raise:
"""
ret = 0 # 状态变量
export_table_records = 0 # 卸数表记录数
columns_info = [] # 字段信息
# 获取表结构
ret, columns_info = self.__get_table_struct()
if ret != 0:
return -1, 0, 0
# 获取表记录数
ret, export_table_records = self.__get_table_records()
if ret != 0:
return -1, 0, 0
# 获取卸数SQL
ret, export_sql = self.__get_export_sql(columns_info)
if ret != 0:
return -1, 0, 0
# 执行卸数sql,生成目标卸数文件
ret = self.__generate_export_file(export_sql, columns_info,
export_table_records)
if ret != 0:
return -1, 0, 0
# 更新DDL信息(通用类型DDL表和元数据表)
try:
ddl_operator = DdlOperator()
except Exception as e:
return -1, 0, 0
ret = ddl_operator.load_ddl_direct(self.__args.proid,
self.__args.tableid, columns_info)
if ret != 0:
return -1, 0, 0
return 0, self.__export_lines, export_table_records