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feat: 脚本兼容Python 3.9, 抽取更多公共代码; 更新使用文档
This commit is contained in:
dhb52
parent
d98419b03f
commit
6d19690bea
@ -50,8 +50,16 @@ TODO 暂未支持
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使用方式如下：
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```Bash
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python3 convertor.py
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安装依赖库
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```bash
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pip install simple-ddl-parser
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```
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然后，TODO
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执行如下命令打印生成 postgresql 的脚本内容，其他可选参数有：oracle, sqlserver
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```Bash
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python3 convertor.py postgres
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```
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程序将sql脚本打印到终端，可以重定向到临时文件tmp.sql, 确认无误后可以利用IDEA（专业版）进行格式化。
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@ -6,11 +6,12 @@ Author: dhb52 (https://gitee.com/dhb52)
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pip install simple-ddl-parser
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"""
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import argparse
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import pathlib
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import re
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import time
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from abc import ABC, abstractmethod
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from typing import Dict, Tuple
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from typing import Dict, Generator, Optional, Tuple, Union
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from simple_ddl_parser import DDLParser
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@ -60,12 +61,12 @@ class Convertor(ABC):
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self.table_script_list = re.findall(r"CREATE TABLE [^;]*;", self.content)
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@abstractmethod
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def translate_type(self, type: str, size: None | int | Tuple[int]) -> str:
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def translate_type(self, type: str, size: Optional[Union[int, Tuple[int]]]) -> str:
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"""字段类型转换
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Args:
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type (str): 字段类型
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size (None | int | Tuple[int]): 字段长度描述, 如varchar(255), decimal(10,2)
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size (Optional[Union[int, Tuple[int]]]): 字段长度描述, 如varchar(255), decimal(10,2)
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Returns:
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str: 类型定义
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@ -97,7 +98,7 @@ class Convertor(ABC):
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pass
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@abstractmethod
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def gen_index(self, table_ddl: Dict) -> str:
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def gen_index(self, ddl: Dict) -> str:
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"""生成索引定义
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Args:
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@ -133,6 +134,55 @@ class Convertor(ABC):
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"""
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pass
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@staticmethod
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def inserts(table_name: str, script_content: str) -> Generator:
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PREFIX = f"INSERT INTO `{table_name}`"
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# 收集 `table_name` 对应的 insert 语句
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for line in script_content.split("\n"):
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if line.startswith(PREFIX):
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head, tail = line.replace(PREFIX, "").split(" VALUES ", maxsplit=1)
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head = head.strip().replace("`", "").lower()
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tail = tail.strip().replace(r"\"", '"')
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# tail = tail.replace("b'0'", "'0'").replace("b'1'", "'1'")
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yield f"INSERT INTO {table_name.lower()} {head} VALUES {tail}"
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@staticmethod
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def index(ddl: Dict) -> Generator:
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"""生成索引定义
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Args:
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ddl (Dict): 表DDL
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Yields:
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Generator[str]: create index 语句
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"""
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def generate_columns(columns):
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keys = [
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f"{col['name'].lower()}{' ' + col['order'].lower() if col['order'] != 'ASC' else ''}"
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for col in columns[0]
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]
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return ", ".join(keys)
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for no, index in enumerate(ddl["index"], 1):
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columns = generate_columns(index["columns"])
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table_name = ddl["table_name"].lower()
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yield f"CREATE INDEX idx_{table_name}_{no:02d} ON {table_name} ({columns})"
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@staticmethod
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def filed_comments(table_sql: str) -> Generator:
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for line in table_sql.split("\n"):
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match = re.match(r"^`([^`]+)`.* COMMENT '([^']+)'", line.strip())
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if match:
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field = match.group(1)
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comment_string = match.group(2).replace("\\n", "\n")
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yield field, comment_string
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def table_comment(self, table_sql: str) -> str:
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match = re.search(r"COMMENT \= '([^']+)';", table_sql)
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return match.group(1) if match else None
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def print(self):
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"""打印转换后的sql脚本到终端"""
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print(
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@ -192,7 +242,7 @@ class PostgreSQLConvertor(Convertor):
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def __init__(self, src):
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super().__init__(src, "PostgreSQL")
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def translate_type(self, type, size):
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def translate_type(self, type: str, size: Optional[Union[int, Tuple[int]]]):
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"""类型转换"""
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type = type.lower()
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@ -234,27 +284,30 @@ class PostgreSQLConvertor(Convertor):
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table_name = ddl["table_name"].lower()
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columns = [f"{_generate_column(col).strip()}" for col in ddl["columns"]]
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filed_def_list = ",\n ".join(columns)
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script = f"""-- ----------------------------
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-- Table structure for {table_name}
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-- ----------------------------
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DROP TABLE IF EXISTS {table_name};
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CREATE TABLE {table_name} (
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{',\n '.join(columns)}
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{filed_def_list}
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);"""
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return script
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def gen_comment(self, table_sql, table_name) -> str:
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def gen_index(self, ddl: Dict) -> str:
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return "\n".join(f"{script};" for script in self.index(ddl))
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def gen_comment(self, table_sql: str, table_name: str) -> str:
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"""生成字段及表的注释"""
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script = ""
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for line in table_sql.split("\n"):
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match = re.match(r"^`([^`]+)`.* COMMENT '([^']+)'", line.strip())
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if match:
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script += f"COMMENT ON COLUMN {table_name}.{match.group(1)} IS '{match.group(2).replace('\\n', '\n')}';\n"
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for field, comment_string in self.filed_comments(table_sql):
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script += (
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f"COMMENT ON COLUMN {table_name}.{field} IS '{comment_string}';" + "\n"
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)
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match = re.search(r"COMMENT \= '([^']+)';", table_sql)
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table_comment = match.group(1) if match else None
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table_comment = self.table_comment(table_sql)
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if table_comment:
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script += f"COMMENT ON TABLE {table_name} IS '{table_comment}';\n"
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@ -264,53 +317,21 @@ CREATE TABLE {table_name} (
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"""生成主键定义"""
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return f"ALTER TABLE {table_name} ADD CONSTRAINT pk_{table_name} PRIMARY KEY (id);\n"
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def gen_index(self, ddl) -> str:
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"""生成 index"""
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def generate_columns(columns):
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keys = [
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f"{col['name'].lower()}{" " + col['order'].lower() if col['order'] != 'ASC' else ''}"
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for col in columns[0]
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]
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return ", ".join(keys)
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script = ""
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for no, index in enumerate(ddl["index"], 1):
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columns = generate_columns(index["columns"])
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table_name = ddl["table_name"].lower()
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script += (
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f"CREATE INDEX idx_{table_name}_{no:02d} ON {table_name} ({columns});\n"
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)
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return script
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def gen_insert(self, table_name) -> str:
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def gen_insert(self, table_name: str) -> str:
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"""生成 insert 语句，以及根据最后的 insert id+1 生成 Sequence"""
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PREFIX = f"INSERT INTO `{table_name}`"
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# 收集 `table_name` 对应的 insert 语句
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inserts = []
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for line in self.content.split("\n"):
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if line.startswith(PREFIX):
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head, tail = line.replace(PREFIX, "").split(" VALUES ", maxsplit=1)
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head = head.strip().replace("`", "").lower()
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tail = tail.strip().replace(r"\"", '"')
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script = f"INSERT INTO {table_name.lower()} {head} VALUES {tail}"
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# bit(1)数据转换
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script = script.replace("b'0'", "'0'").replace("b'1'", "'1'")
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inserts.append(script)
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inserts = list(Convertor.inserts(table_name, self.content))
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## 生成 insert 脚本
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script = ""
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last_id = 0
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if inserts:
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inserts_lines = "\n".join(inserts)
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script += f"""\n\n-- ----------------------------
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-- Records of {table_name.lower()}
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-- ----------------------------
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-- @formatter:off
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BEGIN;
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{'\n'.join(inserts)}
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{inserts_lines}
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COMMIT;
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-- @formatter:on"""
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match = re.search(r"VALUES \((\d+),", inserts[-1])
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@ -332,7 +353,7 @@ class OracleConvertor(Convertor):
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def __init__(self, src):
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super().__init__(src, "Oracle")
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def translate_type(self, type, size: None | int | Tuple[int]):
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def translate_type(self, type: str, size: Optional[Union[int, Tuple[int]]]):
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"""类型转换"""
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type = type.lower()
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@ -369,15 +390,19 @@ class OracleConvertor(Convertor):
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full_type = self.translate_type(type, col["size"])
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nullable = "NULL" if col["nullable"] else "NOT NULL"
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default = f"DEFAULT {col['default']}" if col["default"] is not None else ""
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return f"{'\"size\"' if name == "size" else name } {full_type} {default} {nullable}"
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# Oracle 中 size 不能作为字段名
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field_name = '"size"' if name == "size" else name
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# Oracle DEFAULT 定义在 NULLABLE 之前
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return f"{field_name} {full_type} {default} {nullable}"
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table_name = ddl["table_name"].lower()
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columns = [f"{generate_column(col).strip()}" for col in ddl["columns"]]
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field_def_list = ",\n ".join(columns)
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script = f"""-- ----------------------------
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-- Table structure for {table_name}
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-- ----------------------------
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CREATE TABLE {ddl['table_name'].lower()} (
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{',\n '.join(columns)}
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CREATE TABLE {table_name} (
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{field_def_list}
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);"""
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# oracle INSERT '' 不能通过 NOT NULL 校验
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@ -385,72 +410,51 @@ CREATE TABLE {ddl['table_name'].lower()} (
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return script
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def gen_comment(self, table_sql, table_name) -> str:
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script = ""
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for line in table_sql.split("\n"):
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match = re.search(r"`([^`]+)`.* COMMENT '([^']+)'", line)
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if match:
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script += f"COMMENT ON COLUMN {table_name}.{match.group(1)} IS '{match.group(2).replace('\\n', '\n')}';\n"
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def gen_index(self, ddl: Dict) -> str:
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return "\n".join(f"{script};" for script in self.index(ddl))
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match = re.search(r"COMMENT \= '([^']+)';", table_sql)
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table_comment = match.group(1) if match else None
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def gen_comment(self, table_sql: str, table_name: str) -> str:
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script = ""
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for field, comment_string in self.filed_comments(table_sql):
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script += (
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f"COMMENT ON COLUMN {table_name}.{field} IS '{comment_string}';" + "\n"
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)
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table_comment = self.table_comment(table_sql)
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if table_comment:
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script += f"COMMENT ON TABLE {table_name} IS '{table_comment}';"
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script += f"COMMENT ON TABLE {table_name} IS '{table_comment}';\n"
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return script
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def gen_pk(self, table_name) -> str:
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def gen_pk(self, table_name: str) -> str:
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"""生成主键定义"""
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return f"ALTER TABLE {table_name} ADD CONSTRAINT pk_{table_name} PRIMARY KEY (id);\n"
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def gen_index(self, table_ddl) -> str:
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"""生成 INDEX 定义"""
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def gen_index(self, ddl: Dict) -> str:
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return "\n".join(f"{script};" for script in self.index(ddl))
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def generate_columns(columns):
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keys = [
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f"{col['name'].lower()}{" " + col['order'].lower() if col['order'] != 'ASC' else ''}"
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for col in columns[0]
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]
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return ", ".join(keys)
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script = ""
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for no, index in enumerate(table_ddl["index"], 1):
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columns = generate_columns(index["columns"])
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table_name = table_ddl["table_name"].lower()
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script += (
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f"CREATE INDEX idx_{table_name}_{no:02d} ON {table_name} ({columns});\n"
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)
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return script
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def gen_insert(self, table_name) -> str:
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def gen_insert(self, table_name: str) -> str:
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"""拷贝 INSERT 语句"""
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PREFIX = f"INSERT INTO `{table_name}`"
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inserts = []
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for line in self.content.split("\n"):
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if line.startswith(PREFIX):
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head, tail = line.replace(PREFIX, "").split(" VALUES ", maxsplit=1)
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head = head.strip().replace("`", "").lower()
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tail = tail.strip().replace(r"\"", '"')
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script = f"INSERT INTO {table_name.lower()} {head} VALUES {tail}"
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# bit(1)数据转换
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script = script.replace("b'0'", "'0'").replace("b'1'", "'1'")
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# 对日期数据添加 TO_DATE 转换
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script = re.sub(
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r"('\d{4}-\d{2}-\d{2} \d{2}:\d{2}:\d{2}')",
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r"to_date(\g<1>, 'SYYYY-MM-DD HH24:MI:SS')",
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script,
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)
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inserts.append(script)
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for insert_script in Convertor.inserts(table_name, self.content):
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# 对日期数据添加 TO_DATE 转换
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insert_script = re.sub(
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r"('\d{4}-\d{2}-\d{2} \d{2}:\d{2}:\d{2}')",
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r"to_date(\g<1>, 'SYYYY-MM-DD HH24:MI:SS')",
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insert_script,
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)
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inserts.append(insert_script)
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## 生成 insert 脚本
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script = ""
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last_id = 0
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if inserts:
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inserts_lines = "\n".join(inserts)
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script += f"""\n\n-- ----------------------------
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-- Records of {table_name.lower()}
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-- ----------------------------
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-- @formatter:off
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{'\n'.join(inserts)}
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{inserts_lines}
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COMMIT;
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-- @formatter:on"""
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match = re.search(r"VALUES \((\d+),", inserts[-1])
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@ -476,7 +480,7 @@ class SQLServerConvertor(Convertor):
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def __init__(self, src):
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super().__init__(src, "Microsoft SQL Server")
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def translate_type(self, type, size):
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def translate_type(self, type: str, size: Optional[Union[int, Tuple[int]]]):
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"""类型转换"""
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type = type.lower()
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@ -507,7 +511,7 @@ class SQLServerConvertor(Convertor):
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def _generate_column(col):
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name = col["name"].lower()
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if name == 'id':
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if name == "id":
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return "id bigint NOT NULL PRIMARY KEY IDENTITY"
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if name == "deleted":
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return "deleted bit DEFAULT 0 NOT NULL"
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@ -520,35 +524,34 @@ class SQLServerConvertor(Convertor):
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table_name = ddl["table_name"].lower()
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columns = [f"{_generate_column(col).strip()}" for col in ddl["columns"]]
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filed_def_list = ",\n ".join(columns)
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script = f"""-- ----------------------------
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-- Table structure for {table_name}
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-- ----------------------------
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DROP TABLE IF EXISTS {table_name};
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CREATE TABLE {table_name} (
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{',\n '.join(columns)}
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{filed_def_list}
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)
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GO"""
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return script
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def gen_comment(self, table_sql, table_name) -> str:
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def gen_comment(self, table_sql: str, table_name: str) -> str:
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"""生成字段及表的注释"""
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script = ""
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for line in table_sql.split("\n"):
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match = re.match(r"^`([^`]+)`.* COMMENT '([^']+)'", line.strip())
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if match:
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script += f"""EXEC sp_addextendedproperty
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'MS_Description', N'{match.group(2).replace('\\n', '\n')}',
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for field, comment_string in self.filed_comments(table_sql):
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script += f"""EXEC sp_addextendedproperty
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'MS_Description', N'{comment_string}',
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'SCHEMA', N'dbo',
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'TABLE', N'{table_name}',
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'COLUMN', N'{match.group(1)}'
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'COLUMN', N'{field}'
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GO
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"""
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match = re.search(r"COMMENT \= '([^']+)';", table_sql)
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table_comment = match.group(1) if match else None
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table_comment = self.table_comment(table_sql)
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if table_comment:
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script += f"""EXEC sp_addextendedproperty
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'MS_Description', N'{table_comment}',
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@ -557,55 +560,34 @@ GO
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GO
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"""
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return script
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def gen_pk(self, table_name) -> str:
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def gen_pk(self, table_name: str) -> str:
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"""生成主键定义"""
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return ""
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def gen_index(self, ddl) -> str:
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def gen_index(self, ddl: Dict) -> str:
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"""生成 index"""
|
||||
return "\n".join(f"{script}\nGO" for script in self.index(ddl))
|
||||
|
||||
def generate_columns(columns):
|
||||
keys = [
|
||||
f"{col['name'].lower()}{" " + col['order'].lower() if col['order'] != 'ASC' else ''}"
|
||||
for col in columns[0]
|
||||
]
|
||||
return ", ".join(keys)
|
||||
|
||||
script = ""
|
||||
for no, index in enumerate(ddl["index"], 1):
|
||||
columns = generate_columns(index["columns"])
|
||||
table_name = ddl["table_name"].lower()
|
||||
script += f"CREATE INDEX idx_{table_name}_{no:02d} ON {table_name} ({columns})\nGO\n"
|
||||
|
||||
return script
|
||||
|
||||
def gen_insert(self, table_name) -> str:
|
||||
def gen_insert(self, table_name: str) -> str:
|
||||
"""生成 insert 语句，以及根据最后的 insert id+1 生成 Sequence"""
|
||||
|
||||
PREFIX = f"INSERT INTO `{table_name}`"
|
||||
|
||||
# 收集 `table_name` 对应的 insert 语句
|
||||
inserts = []
|
||||
for line in self.content.split("\n"):
|
||||
if line.startswith(PREFIX):
|
||||
head, tail = line.replace(PREFIX, "").split(" VALUES ", maxsplit=1)
|
||||
head = head.strip().replace("`", "").lower()
|
||||
tail = tail.strip().replace(r"\"", '"')
|
||||
# SQLServer: 字符串前加N，hack，是否存在替换字符串内容的风险
|
||||
tail = tail.replace(", '", ", N'").replace("VALUES ('", "VALUES (N')")
|
||||
script = f"INSERT INTO {table_name.lower()} {head} VALUES {tail}"
|
||||
# bit(1)数据转换
|
||||
script = script.replace("b'0'", "'0'").replace("b'1'", "'1'")
|
||||
# 删除 insert 的结尾分号
|
||||
script = re.sub(";$", r"\nGO", script)
|
||||
inserts.append(script)
|
||||
for insert_script in Convertor.inserts(table_name, self.content):
|
||||
# SQLServer: 字符串前加N，hack，是否存在替换字符串内容的风险
|
||||
insert_script = insert_script.replace(", '", ", N'").replace(
|
||||
"VALUES ('", "VALUES (N')"
|
||||
)
|
||||
# 删除 insert 的结尾分号
|
||||
insert_script = re.sub(";$", r"\nGO", insert_script)
|
||||
inserts.append(insert_script)
|
||||
|
||||
## 生成 insert 脚本
|
||||
script = ""
|
||||
if inserts:
|
||||
inserts_lines = "\n".join(inserts)
|
||||
script += f"""\n\n-- ----------------------------
|
||||
-- Records of {table_name.lower()}
|
||||
-- ----------------------------
|
||||
@ -614,7 +596,7 @@ BEGIN TRANSACTION
|
||||
GO
|
||||
SET IDENTITY_INSERT {table_name.lower()} ON
|
||||
GO
|
||||
{'\n'.join(inserts)}
|
||||
{inserts_lines}
|
||||
SET IDENTITY_INSERT {table_name.lower()} OFF
|
||||
GO
|
||||
COMMIT
|
||||
@ -625,10 +607,26 @@ GO
|
||||
|
||||
|
||||
def main():
|
||||
sql_file = pathlib.Path('../mysql/ruoyi-vue-pro.sql').resolve().as_posix()
|
||||
# convertor = PostgreSQLConvertor(sql_file)
|
||||
# convertor = OracleConvertor(sql_file)
|
||||
convertor = SQLServerConvertor(sql_file)
|
||||
parser = argparse.ArgumentParser(description="芋道系统数据库转换工具")
|
||||
parser.add_argument(
|
||||
"type",
|
||||
type=str,
|
||||
help="目标数据库类型",
|
||||
choices=["postgres", "oracle", "sqlserver"],
|
||||
)
|
||||
args = parser.parse_args()
|
||||
|
||||
sql_file = pathlib.Path("../mysql/ruoyi-vue-pro.sql").resolve().as_posix()
|
||||
convertor = None
|
||||
if args.type == "postgres":
|
||||
convertor = PostgreSQLConvertor(sql_file)
|
||||
elif args.type == "oracle":
|
||||
convertor = OracleConvertor(sql_file)
|
||||
elif args.type == "sqlserver":
|
||||
convertor = SQLServerConvertor(sql_file)
|
||||
else:
|
||||
raise NotImplementedError(f"不支持目标数据库类型: {args.type}")
|
||||
|
||||
convertor.print()
|
||||
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user