refactor: dbm

server/internal/db/dbm/sqlite/dialect.go

@@ -1,10 +1,8 @@
 package sqlite
 
 import (
-	"database/sql"
 	"fmt"
 	"mayfly-go/internal/db/dbm/dbi"
-	"mayfly-go/pkg/utils/collx"
 	"strings"
 	"time"
 )
@@ -15,42 +13,6 @@ type SqliteDialect struct {
 	dc *dbi.DbConn
 }
 
-func (sd *SqliteDialect) BatchInsert(tx *sql.Tx, tableName string, columns []string, values [][]any, duplicateStrategy int) (int64, error) {
-	_, _ = sd.dc.Exec("PRAGMA foreign_keys = false")
-	// 执行批量insert sql，跟mysql一样 支持批量insert语法
-	// 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, ","))
-
-	// 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 or ignore into"
-	} else if duplicateStrategy == 2 {
-		prefix = "insert or replace into"
-	}
-
-	sqlStr := fmt.Sprintf("%s %s (%s) values %s", prefix, sd.QuoteIdentifier(tableName), strings.Join(columns, ","), placeholder)
-
-	// 把二维数组转为一维数组
-	var args []any
-	for _, v := range values {
-		args = append(args, v...)
-	}
-	exec, err := sd.dc.TxExec(tx, sqlStr, args...)
-
-	_, _ = sd.dc.Exec("PRAGMA foreign_keys = true;")
-
-	// 执行批量insert sql
-	return exec, err
-}
-
 func (sd *SqliteDialect) CopyTable(copy *dbi.DbCopyTable) error {
 	tableName := copy.TableName
 
@@ -83,101 +45,12 @@ func (sd *SqliteDialect) CopyTable(copy *dbi.DbCopyTable) error {
 	return err
 }
 
-// 获取建表ddl
-func (sd *SqliteDialect) GenerateTableDDL(columns []dbi.Column, tableInfo dbi.Table, dropBeforeCreate bool) []string {
-	sqlArr := make([]string, 0)
-	tbName := sd.QuoteIdentifier(tableInfo.TableName)
-	if dropBeforeCreate {
-		sqlArr = append(sqlArr, fmt.Sprintf("DROP TABLE IF EXISTS %s", tbName))
-	}
-	// 组装建表语句
-	createSql := fmt.Sprintf("CREATE TABLE %s (\n", tbName)
-	fields := make([]string, 0)
-
-	// 把通用类型转换为达梦类型
-	for _, column := range columns {
-		fields = append(fields, sd.genColumnBasicSql(column))
-	}
-	createSql += strings.Join(fields, ",\n")
-	createSql += "\n)"
-
-	sqlArr = append(sqlArr, createSql)
-
-	return sqlArr
-}
-
-func (sd *SqliteDialect) genColumnBasicSql(column dbi.Column) string {
-	incr := ""
-	if column.IsIdentity {
-		incr = " AUTOINCREMENT"
-	}
-
-	nullAble := ""
-	if !column.Nullable {
-		nullAble = " NOT NULL"
-	}
-
-	quoteColumnName := sd.QuoteIdentifier(column.ColumnName)
-
-	// 如果是主键，则直接返回，不判断默认值
-	if column.IsPrimaryKey {
-		return fmt.Sprintf(" %s integer PRIMARY KEY%s%s", quoteColumnName, incr, nullAble)
-	}
-
-	defVal := "" // 默认值需要判断引号，如函数是不需要引号的 // 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
-	if column.ColumnDefault != "" && !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(string(column.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(string(column.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)
-		}
-	}
-
-	return fmt.Sprintf(" %s %s%s%s", quoteColumnName, column.GetColumnType(), nullAble, defVal)
-}
-
-// 获取建索引ddl
-func (sd *SqliteDialect) GenerateIndexDDL(indexs []dbi.Index, tableInfo dbi.Table) []string {
-	sqls := 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] = sd.QuoteIdentifier(name)
-		}
-		// 创建前尝试删除
-		sqls = append(sqls, fmt.Sprintf("DROP INDEX IF EXISTS \"%s\"", index.IndexName))
-
-		sqlTmp := "CREATE %s INDEX %s ON %s (%s) "
-		sqls = append(sqls, fmt.Sprintf(sqlTmp, unique, sd.QuoteIdentifier(index.IndexName), sd.QuoteIdentifier(tableInfo.TableName), strings.Join(colNames, ",")))
-	}
-	return sqls
-}
-
-func (sd *SqliteDialect) GetDataHelper() dbi.DataHelper {
-	return dataHelper
-}
-
-func (sd *SqliteDialect) GetColumnHelper() dbi.ColumnHelper {
-	return columnHelper
-}
-
 func (sd *SqliteDialect) GetDumpHelper() dbi.DumpHelper {
 	return new(DumpHelper)
 }
+
+func (sd *SqliteDialect) GetSQLGenerator() dbi.SQLGenerator {
+	return &SQLGenerator{
+		dialect: sd,
+	}
+}