mirror of
https://gitee.com/dromara/mayfly-go
synced 2025-11-04 16:30:25 +08:00
264 lines
8.2 KiB
Go
264 lines
8.2 KiB
Go
package mssql
|
||
|
||
import (
|
||
"fmt"
|
||
"io"
|
||
"mayfly-go/internal/db/dbm/dbi"
|
||
"mayfly-go/pkg/utils/anyx"
|
||
"mayfly-go/pkg/utils/collx"
|
||
"regexp"
|
||
"strings"
|
||
"time"
|
||
)
|
||
|
||
var (
|
||
// 数字类型
|
||
numberRegexp = regexp.MustCompile(`(?i)int|double|float|number|decimal|byte|bit`)
|
||
// 日期时间类型
|
||
datetimeRegexp = regexp.MustCompile(`(?i)datetime|timestamp`)
|
||
// 日期类型
|
||
dateRegexp = regexp.MustCompile(`(?i)date`)
|
||
// 时间类型
|
||
timeRegexp = regexp.MustCompile(`(?i)time`)
|
||
|
||
// mssql数据类型 对应 公共数据类型
|
||
commonColumnTypeMap = map[string]dbi.ColumnDataType{
|
||
"bigint": dbi.CommonTypeBigint,
|
||
"numeric": dbi.CommonTypeNumber,
|
||
"bit": dbi.CommonTypeInt,
|
||
"smallint": dbi.CommonTypeSmallint,
|
||
"decimal": dbi.CommonTypeNumber,
|
||
"smallmoney": dbi.CommonTypeNumber,
|
||
"int": dbi.CommonTypeInt,
|
||
"tinyint": dbi.CommonTypeSmallint, // mssql tinyint不支持负数
|
||
"money": dbi.CommonTypeNumber,
|
||
"float": dbi.CommonTypeNumber, // 近似数字
|
||
"real": dbi.CommonTypeVarchar,
|
||
"date": dbi.CommonTypeDate, // 日期和时间
|
||
"datetimeoffset": dbi.CommonTypeDatetime,
|
||
"datetime2": dbi.CommonTypeDatetime,
|
||
"smalldatetime": dbi.CommonTypeDatetime,
|
||
"datetime": dbi.CommonTypeDatetime,
|
||
"time": dbi.CommonTypeTime,
|
||
"char": dbi.CommonTypeChar, // 字符串
|
||
"varchar": dbi.CommonTypeVarchar,
|
||
"text": dbi.CommonTypeText,
|
||
"nchar": dbi.CommonTypeChar,
|
||
"nvarchar": dbi.CommonTypeVarchar,
|
||
"ntext": dbi.CommonTypeText,
|
||
"binary": dbi.CommonTypeBinary,
|
||
"varbinary": dbi.CommonTypeBinary,
|
||
"cursor": dbi.CommonTypeVarchar, // 其他
|
||
"rowversion": dbi.CommonTypeVarchar,
|
||
"hierarchyid": dbi.CommonTypeVarchar,
|
||
"uniqueidentifier": dbi.CommonTypeVarchar,
|
||
"sql_variant": dbi.CommonTypeVarchar,
|
||
"xml": dbi.CommonTypeText,
|
||
"table": dbi.CommonTypeText,
|
||
"geometry": dbi.CommonTypeText, // 空间几何类型
|
||
"geography": dbi.CommonTypeText, // 空间地理类型
|
||
}
|
||
|
||
// 公共数据类型 对应 mssql数据类型
|
||
|
||
mssqlColumnTypeMap = map[dbi.ColumnDataType]string{
|
||
dbi.CommonTypeVarchar: "nvarchar",
|
||
dbi.CommonTypeChar: "nchar",
|
||
dbi.CommonTypeText: "ntext",
|
||
dbi.CommonTypeBlob: "ntext",
|
||
dbi.CommonTypeLongblob: "ntext",
|
||
dbi.CommonTypeLongtext: "ntext",
|
||
dbi.CommonTypeBinary: "varbinary",
|
||
dbi.CommonTypeMediumblob: "ntext",
|
||
dbi.CommonTypeMediumtext: "ntext",
|
||
dbi.CommonTypeVarbinary: "varbinary",
|
||
dbi.CommonTypeInt: "int",
|
||
dbi.CommonTypeSmallint: "smallint",
|
||
dbi.CommonTypeTinyint: "smallint",
|
||
dbi.CommonTypeNumber: "decimal",
|
||
dbi.CommonTypeBigint: "bigint",
|
||
dbi.CommonTypeDatetime: "datetime2",
|
||
dbi.CommonTypeDate: "date",
|
||
dbi.CommonTypeTime: "time",
|
||
dbi.CommonTypeTimestamp: "timestamp",
|
||
dbi.CommonTypeEnum: "nvarchar",
|
||
dbi.CommonTypeJSON: "nvarchar",
|
||
}
|
||
dataHelper = &DataHelper{}
|
||
columnHelper = &ColumnHelper{}
|
||
)
|
||
|
||
func GetDataHelper() *DataHelper {
|
||
return dataHelper
|
||
}
|
||
|
||
type DataHelper struct {
|
||
}
|
||
|
||
func (dc *DataHelper) GetDataType(dbColumnType string) dbi.DataType {
|
||
if numberRegexp.MatchString(dbColumnType) {
|
||
return dbi.DataTypeNumber
|
||
}
|
||
// 日期时间类型
|
||
if datetimeRegexp.MatchString(dbColumnType) {
|
||
return dbi.DataTypeDateTime
|
||
}
|
||
// 日期类型
|
||
if dateRegexp.MatchString(dbColumnType) {
|
||
return dbi.DataTypeDate
|
||
}
|
||
// 时间类型
|
||
if timeRegexp.MatchString(dbColumnType) {
|
||
return dbi.DataTypeTime
|
||
}
|
||
return dbi.DataTypeString
|
||
}
|
||
|
||
func (dc *DataHelper) FormatData(dbColumnValue any, dataType dbi.DataType) string {
|
||
// 如果dataType是datetime而dbColumnValue是string类型，则需要根据类型格式化
|
||
str, ok := dbColumnValue.(string)
|
||
if dataType == dbi.DataTypeDateTime && ok {
|
||
// 尝试用时间格式解析
|
||
res, err := time.Parse(time.DateTime, str)
|
||
if err == nil {
|
||
return str
|
||
}
|
||
res, _ = time.Parse(time.RFC3339, str)
|
||
return res.Format(time.DateTime)
|
||
}
|
||
if dataType == dbi.DataTypeDate && ok {
|
||
// 尝试用时间格式解析
|
||
res, _ := time.Parse(time.DateOnly, str)
|
||
return res.Format(time.DateOnly)
|
||
}
|
||
if dataType == dbi.DataTypeTime && ok {
|
||
res, _ := time.Parse(time.TimeOnly, str)
|
||
return res.Format(time.TimeOnly)
|
||
}
|
||
return anyx.ToString(dbColumnValue)
|
||
}
|
||
|
||
func (dc *DataHelper) ParseData(dbColumnValue any, dataType dbi.DataType) any {
|
||
// 如果dataType是datetime而dbColumnValue是string类型，则需要转换为time.Time类型
|
||
_, ok := dbColumnValue.(string)
|
||
if dataType == dbi.DataTypeDateTime && ok {
|
||
res, _ := time.Parse(time.RFC3339, anyx.ToString(dbColumnValue))
|
||
return res
|
||
}
|
||
if dataType == dbi.DataTypeDate && ok {
|
||
res, _ := time.Parse(time.DateOnly, anyx.ToString(dbColumnValue))
|
||
return res
|
||
}
|
||
if dataType == dbi.DataTypeTime && ok {
|
||
res, _ := time.Parse(time.TimeOnly, anyx.ToString(dbColumnValue))
|
||
return res
|
||
}
|
||
return dbColumnValue
|
||
}
|
||
|
||
func (dc *DataHelper) WrapValue(dbColumnValue any, dataType dbi.DataType) string {
|
||
if dbColumnValue == nil {
|
||
return "NULL"
|
||
}
|
||
switch dataType {
|
||
case dbi.DataTypeNumber:
|
||
return fmt.Sprintf("%v", dbColumnValue)
|
||
case dbi.DataTypeString:
|
||
val := fmt.Sprintf("%v", dbColumnValue)
|
||
// 转义单引号
|
||
val = strings.Replace(val, `'`, `''`, -1)
|
||
val = strings.Replace(val, `\''`, `\'`, -1)
|
||
// 转义换行符
|
||
val = strings.Replace(val, "\n", "\\n", -1)
|
||
return fmt.Sprintf("'%s'", val)
|
||
case dbi.DataTypeDate, dbi.DataTypeDateTime, dbi.DataTypeTime:
|
||
return fmt.Sprintf("'%s'", dc.FormatData(dbColumnValue, dataType))
|
||
}
|
||
return fmt.Sprintf("'%s'", dbColumnValue)
|
||
}
|
||
|
||
type ColumnHelper struct {
|
||
dbi.DefaultColumnHelper
|
||
}
|
||
|
||
func (ch *ColumnHelper) ToCommonColumn(dialectColumn *dbi.Column) {
|
||
// 翻译为通用数据库类型
|
||
dataType := dialectColumn.DataType
|
||
t1 := commonColumnTypeMap[string(dataType)]
|
||
if t1 == "" {
|
||
dialectColumn.DataType = dbi.CommonTypeVarchar
|
||
dialectColumn.CharMaxLength = 2000
|
||
} else {
|
||
dialectColumn.DataType = t1
|
||
}
|
||
}
|
||
|
||
func (ch *ColumnHelper) ToColumn(commonColumn *dbi.Column) {
|
||
ctype := mssqlColumnTypeMap[commonColumn.DataType]
|
||
|
||
if ctype == "" {
|
||
commonColumn.DataType = "varchar"
|
||
commonColumn.CharMaxLength = 2000
|
||
} else {
|
||
commonColumn.DataType = dbi.ColumnDataType(ctype)
|
||
ch.FixColumn(commonColumn)
|
||
// 修复数据库迁移字段长度
|
||
dataType := string(commonColumn.DataType)
|
||
if collx.ArrayAnyMatches([]string{"nvarchar", "nchar"}, dataType) {
|
||
commonColumn.CharMaxLength = commonColumn.CharMaxLength * 2
|
||
}
|
||
|
||
if collx.ArrayAnyMatches([]string{"char"}, dataType) {
|
||
// char最大长度4000
|
||
if commonColumn.CharMaxLength >= 4000 {
|
||
commonColumn.DataType = "ntext"
|
||
commonColumn.CharMaxLength = 0
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
func (ch *ColumnHelper) FixColumn(column *dbi.Column) {
|
||
dataType := strings.ToLower(string(column.DataType))
|
||
|
||
if collx.ArrayAnyMatches([]string{"date", "time"}, dataType) {
|
||
// 如果是datetime，精度取NumScale字段
|
||
column.CharMaxLength = column.NumScale
|
||
} else if collx.ArrayAnyMatches([]string{"int", "bit", "real", "text", "xml"}, dataType) {
|
||
// 不显示长度的类型
|
||
column.NumPrecision = 0
|
||
column.CharMaxLength = 0
|
||
} else if collx.ArrayAnyMatches([]string{"numeric", "decimal", "float"}, dataType) {
|
||
// 如果是num，长度取精度和小数位数
|
||
column.CharMaxLength = 0
|
||
} else if collx.ArrayAnyMatches([]string{"nvarchar", "nchar"}, dataType) {
|
||
// 如果是nvarchar，可视长度减半
|
||
column.CharMaxLength = column.CharMaxLength / 2
|
||
}
|
||
|
||
if collx.ArrayAnyMatches([]string{"char"}, dataType) {
|
||
// char最大长度4000
|
||
if column.CharMaxLength >= 4000 {
|
||
column.DataType = "ntext"
|
||
column.CharMaxLength = 0
|
||
}
|
||
}
|
||
|
||
}
|
||
|
||
type DumpHelper struct {
|
||
dbi.DefaultDumpHelper
|
||
}
|
||
|
||
// mssql 在insert语句前后不能识别begin和commit语句
|
||
func (dh *DumpHelper) BeforeInsert(writer io.Writer, tableName string) {
|
||
}
|
||
|
||
// mssql 在insert语句前后不能识别begin和commit语句
|
||
func (dh *DumpHelper) AfterInsert(writer io.Writer, tableName string, columns []dbi.Column) {
|
||
}
|
||
|
||
func (dh *DumpHelper) BeforeInsertSql(quoteSchema string, tableName string) string {
|
||
return fmt.Sprintf("set identity_insert %s.%s on ", quoteSchema, tableName)
|
||
}
|