mirror of
https://gitee.com/dromara/mayfly-go
synced 2026-01-02 04:36:35 +08:00
refactor: dbm
This commit is contained in:
meilin.huang
@@ -1,17 +1,20 @@
|
||||
package mysql
|
||||
|
||||
import (
|
||||
"database/sql"
|
||||
"fmt"
|
||||
"mayfly-go/internal/db/dbm/dbi"
|
||||
"mayfly-go/internal/db/dbm/sqlparser"
|
||||
"mayfly-go/internal/db/dbm/sqlparser/mysql"
|
||||
"mayfly-go/pkg/utils/collx"
|
||||
"strings"
|
||||
"time"
|
||||
)
|
||||
|
||||
const Quoter = "`"
|
||||
var (
|
||||
mysqlQuoter = dbi.Quoter{
|
||||
Prefix: '`',
|
||||
Suffix: '`',
|
||||
IsReserved: dbi.AlwaysReserve,
|
||||
}
|
||||
)
|
||||
|
||||
type MysqlDialect struct {
|
||||
dbi.DefaultDialect
|
||||
@@ -24,38 +27,6 @@ func (md *MysqlDialect) GetDbProgram() (dbi.DbProgram, error) {
|
||||
return NewDbProgramMysql(md.dc), nil
|
||||
}
|
||||
|
||||
func (md *MysqlDialect) BatchInsert(tx *sql.Tx, tableName string, columns []string, values [][]any, duplicateStrategy int) (int64, error) {
|
||||
// 生成占位符字符串：如：(?,?)
|
||||
// 重复字符串并用逗号连接
|
||||
repeated := strings.Repeat("?,", len(columns))
|
||||
// 去除最后一个逗号，占位符由括号包裹
|
||||
placeholder := fmt.Sprintf("(%s)", strings.TrimSuffix(repeated, ","))
|
||||
|
||||
// 执行批量insert sql，mysql支持批量insert语法
|
||||
// insert into table_name (column1, column2, ...) values (value1, value2, ...), (value1, value2, ...), ...
|
||||
|
||||
// 重复占位符字符串n遍
|
||||
repeated = strings.Repeat(placeholder+",", len(values))
|
||||
// 去除最后一个逗号
|
||||
placeholder = strings.TrimSuffix(repeated, ",")
|
||||
|
||||
prefix := "insert into"
|
||||
if duplicateStrategy == 1 {
|
||||
prefix = "insert ignore into"
|
||||
} else if duplicateStrategy == 2 {
|
||||
prefix = "replace into"
|
||||
}
|
||||
|
||||
sqlStr := fmt.Sprintf("%s %s (%s) values %s", prefix, md.QuoteIdentifier(tableName), strings.Join(columns, ","), placeholder)
|
||||
// 执行批量insert sql
|
||||
// 把二维数组转为一维数组
|
||||
var args []any
|
||||
for _, v := range values {
|
||||
args = append(args, v...)
|
||||
}
|
||||
return md.dc.TxExec(tx, sqlStr, args...)
|
||||
}
|
||||
|
||||
func (md *MysqlDialect) CopyTable(copy *dbi.DbCopyTable) error {
|
||||
tableName := copy.TableName
|
||||
|
||||
@@ -77,145 +48,14 @@ func (md *MysqlDialect) CopyTable(copy *dbi.DbCopyTable) error {
|
||||
return err
|
||||
}
|
||||
|
||||
// 获取建表ddl
|
||||
func (md *MysqlDialect) GenerateTableDDL(columns []dbi.Column, tableInfo dbi.Table, dropBeforeCreate bool) []string {
|
||||
sqlArr := make([]string, 0)
|
||||
|
||||
if dropBeforeCreate {
|
||||
sqlArr = append(sqlArr, fmt.Sprintf("DROP TABLE IF EXISTS %s", md.QuoteIdentifier(tableInfo.TableName)))
|
||||
}
|
||||
|
||||
// 组装建表语句
|
||||
createSql := fmt.Sprintf("CREATE TABLE %s (\n", md.QuoteIdentifier(tableInfo.TableName))
|
||||
fields := make([]string, 0)
|
||||
pks := make([]string, 0)
|
||||
|
||||
for _, column := range columns {
|
||||
if column.IsPrimaryKey {
|
||||
pks = append(pks, column.ColumnName)
|
||||
}
|
||||
fields = append(fields, md.genColumnBasicSql(column))
|
||||
}
|
||||
|
||||
// 建表ddl
|
||||
createSql += strings.Join(fields, ",\n")
|
||||
if len(pks) > 0 {
|
||||
createSql += fmt.Sprintf(", \nPRIMARY KEY (%s)", strings.Join(pks, ","))
|
||||
}
|
||||
createSql += "\n)"
|
||||
|
||||
// 表注释
|
||||
if tableInfo.TableComment != "" {
|
||||
createSql += fmt.Sprintf(" COMMENT '%s'", md.QuoteEscape(tableInfo.TableComment))
|
||||
}
|
||||
|
||||
sqlArr = append(sqlArr, createSql)
|
||||
|
||||
return sqlArr
|
||||
}
|
||||
|
||||
// 获取建索引ddl
|
||||
func (md *MysqlDialect) GenerateIndexDDL(indexs []dbi.Index, tableInfo dbi.Table) []string {
|
||||
sqlArr := make([]string, 0)
|
||||
for _, index := range indexs {
|
||||
unique := ""
|
||||
if index.IsUnique {
|
||||
unique = "unique"
|
||||
}
|
||||
// 取出列名，添加引号
|
||||
cols := strings.Split(index.ColumnName, ",")
|
||||
colNames := make([]string, len(cols))
|
||||
for i, name := range cols {
|
||||
colNames[i] = md.QuoteIdentifier(name)
|
||||
}
|
||||
sqlTmp := "ALTER TABLE %s ADD %s INDEX %s(%s) USING BTREE"
|
||||
sqlStr := fmt.Sprintf(sqlTmp, md.QuoteIdentifier(tableInfo.TableName), unique, md.QuoteIdentifier(index.IndexName), strings.Join(colNames, ","))
|
||||
comment := md.QuoteEscape(index.IndexComment)
|
||||
if comment != "" {
|
||||
sqlStr += fmt.Sprintf(" COMMENT '%s'", comment)
|
||||
}
|
||||
sqlArr = append(sqlArr, sqlStr)
|
||||
}
|
||||
return sqlArr
|
||||
}
|
||||
|
||||
func (md *MysqlDialect) genColumnBasicSql(column dbi.Column) string {
|
||||
dataType := string(column.DataType)
|
||||
|
||||
incr := ""
|
||||
if column.IsIdentity {
|
||||
incr = " AUTO_INCREMENT"
|
||||
}
|
||||
|
||||
nullAble := ""
|
||||
if !column.Nullable {
|
||||
nullAble = " NOT NULL"
|
||||
}
|
||||
columnType := column.GetColumnType()
|
||||
if nullAble == "" && strings.Contains(columnType, "timestamp") {
|
||||
nullAble = " NULL"
|
||||
}
|
||||
|
||||
defVal := "" // 默认值需要判断引号，如函数是不需要引号的
|
||||
if column.ColumnDefault != "" &&
|
||||
// 当默认值是字符串'NULL'时，不需要设置默认值
|
||||
column.ColumnDefault != "NULL" &&
|
||||
// 为了防止跨源函数不支持 当默认值是函数时，不需要设置默认值
|
||||
!strings.Contains(column.ColumnDefault, "(") {
|
||||
// 哪些字段类型默认值需要加引号
|
||||
mark := false
|
||||
if collx.ArrayAnyMatches([]string{"char", "text", "date", "time", "lob"}, strings.ToLower(dataType)) {
|
||||
// 当数据类型是日期时间，默认值是日期时间函数时，默认值不需要引号
|
||||
if collx.ArrayAnyMatches([]string{"date", "time"}, strings.ToLower(dataType)) &&
|
||||
collx.ArrayAnyMatches([]string{"DATE", "TIME"}, strings.ToUpper(column.ColumnDefault)) {
|
||||
mark = false
|
||||
} else {
|
||||
mark = true
|
||||
}
|
||||
}
|
||||
if mark {
|
||||
defVal = fmt.Sprintf(" DEFAULT '%s'", column.ColumnDefault)
|
||||
} else {
|
||||
defVal = fmt.Sprintf(" DEFAULT %s", column.ColumnDefault)
|
||||
}
|
||||
}
|
||||
comment := ""
|
||||
if column.ColumnComment != "" {
|
||||
// 防止注释内含有特殊字符串导致sql出错
|
||||
commentStr := md.QuoteEscape(column.ColumnComment)
|
||||
comment = fmt.Sprintf(" COMMENT '%s'", commentStr)
|
||||
}
|
||||
|
||||
columnSql := fmt.Sprintf(" %s %s%s%s%s%s", md.QuoteIdentifier(column.ColumnName), columnType, nullAble, incr, defVal, comment)
|
||||
return columnSql
|
||||
}
|
||||
|
||||
func (dx *MysqlDialect) QuoteIdentifier(name string) string {
|
||||
end := strings.IndexRune(name, 0)
|
||||
if end > -1 {
|
||||
name = name[:end]
|
||||
}
|
||||
return Quoter + strings.Replace(name, Quoter, Quoter+Quoter, -1) + Quoter
|
||||
}
|
||||
|
||||
func (dx *MysqlDialect) RemoveQuote(name string) string {
|
||||
return strings.ReplaceAll(name, Quoter, "")
|
||||
}
|
||||
|
||||
func (md *MysqlDialect) QuoteLiteral(literal string) string {
|
||||
literal = strings.ReplaceAll(literal, `\`, `\\`)
|
||||
literal = strings.ReplaceAll(literal, `'`, `''`)
|
||||
return "'" + literal + "'"
|
||||
}
|
||||
|
||||
func (md *MysqlDialect) GetDataHelper() dbi.DataHelper {
|
||||
return dataHelper
|
||||
}
|
||||
|
||||
func (md *MysqlDialect) GetColumnHelper() dbi.ColumnHelper {
|
||||
return columnHelper
|
||||
func (md *MysqlDialect) Quoter() dbi.Quoter {
|
||||
return mysqlQuoter
|
||||
}
|
||||
|
||||
func (pd *MysqlDialect) GetSQLParser() sqlparser.SqlParser {
|
||||
return new(mysql.MysqlParser)
|
||||
}
|
||||
|
||||
func (md *MysqlDialect) GetSQLGenerator() dbi.SQLGenerator {
|
||||
return &SQLGenerator{Dialect: md}
|
||||
}
|
||||
|
||||
Reference in New Issue
Block a user