mirror of
https://github.com/tangpanqing/aorm.git
synced 2025-10-06 00:16:50 +08:00
473 lines
14 KiB
Go
473 lines
14 KiB
Go
package migrate_mysql
|
|
|
|
import (
|
|
"github.com/tangpanqing/aorm/executor"
|
|
"github.com/tangpanqing/aorm/null"
|
|
"reflect"
|
|
)
|
|
|
|
type Table struct {
|
|
TableName null.String
|
|
Engine null.String
|
|
TableComment null.String
|
|
}
|
|
|
|
type Column struct {
|
|
ColumnName null.String
|
|
ColumnDefault null.String
|
|
IsNullable null.String
|
|
DataType null.String //数据类型 varchar,bigint,int
|
|
MaxLength null.Int //数据最大长度 20
|
|
ColumnComment null.String
|
|
Extra null.String //扩展信息 auto_increment
|
|
}
|
|
|
|
type Index struct {
|
|
NonUnique null.Int
|
|
ColumnName null.String
|
|
KeyName null.String
|
|
}
|
|
|
|
//MigrateExecutor 定义结构
|
|
type MigrateExecutor struct {
|
|
ex *executor.Executor
|
|
}
|
|
|
|
//SetEx 设置ex执行者
|
|
func (mm *MigrateExecutor) SetEx(ex *executor.Executor) *MigrateExecutor {
|
|
mm.ex = ex
|
|
return mm
|
|
}
|
|
|
|
//ShowCreateTable 查看创建表的ddl
|
|
//func (mm *MigrateExecutor) ShowCreateTable(tableName string) string {
|
|
// var str string
|
|
// mm.ex.RawSql("show create table "+tableName).Value("Create Table", &str)
|
|
// return str
|
|
//}
|
|
|
|
//MigrateCommon 迁移的主要过程
|
|
func (mm *MigrateExecutor) MigrateCommon(tableName string, typeOf reflect.Type) error {
|
|
//tableFromCode := mm.getTableFromCode(tableName)
|
|
//columnsFromCode := mm.getColumnsFromCode(typeOf)
|
|
//indexesFromCode := mm.getIndexesFromCode(typeOf, tableFromCode)
|
|
//
|
|
//dbName, dbErr := mm.getDbName()
|
|
//if dbErr != nil {
|
|
// return dbErr
|
|
//}
|
|
//
|
|
//tablesFromDb := mm.getTableFromDb(dbName, tableName)
|
|
//if len(tablesFromDb) != 0 {
|
|
// tableFromDb := tablesFromDb[0]
|
|
// columnsFromDb := mm.getColumnsFromDb(dbName, tableName)
|
|
// indexsFromDb := mm.getIndexesFromDb(tableName)
|
|
//
|
|
// mm.modifyTable(tableFromCode, columnsFromCode, indexesFromCode, tableFromDb, columnsFromDb, indexsFromDb)
|
|
//} else {
|
|
// mm.createTable(tableFromCode, columnsFromCode, indexesFromCode)
|
|
//}
|
|
|
|
return nil
|
|
}
|
|
|
|
//
|
|
//func (mm *MigrateExecutor) getTableFromCode(tableName string) Table {
|
|
// var tableFromCode Table
|
|
// tableFromCode.TableName = aorm.StringFrom(tableName)
|
|
// tableFromCode.Engine = aorm.StringFrom(mm.getOpinionVal("ENGINE", "MyISAM"))
|
|
// tableFromCode.TableComment = aorm.StringFrom(mm.getOpinionVal("COMMENT", ""))
|
|
//
|
|
// return tableFromCode
|
|
//}
|
|
//
|
|
//func (mm *MigrateExecutor) getColumnsFromCode(typeOf reflect.Type) []Column {
|
|
// var columnsFromCode []Column
|
|
// for i := 0; i < typeOf.Elem().NumField(); i++ {
|
|
// fieldName := aorm.UnderLine(typeOf.Elem().Field(i).Name)
|
|
// fieldType := typeOf.Elem().Field(i).Type.Name()
|
|
// fieldMap := getTagMap(typeOf.Elem().Field(i).Tag.Get("aorm"))
|
|
// columnsFromCode = append(columnsFromCode, Column{
|
|
// ColumnName: aorm.StringFrom(fieldName),
|
|
// DataType: aorm.StringFrom(getDataType(fieldType, fieldMap)),
|
|
// MaxLength: aorm.IntFrom(int64(getMaxLength(getDataType(fieldType, fieldMap), fieldMap))),
|
|
// IsNullable: aorm.StringFrom(getNullAble(fieldMap)),
|
|
// ColumnComment: aorm.StringFrom(getComment(fieldMap)),
|
|
// Extra: aorm.StringFrom(getExtra(fieldMap)),
|
|
// ColumnDefault: aorm.StringFrom(getDefaultVal(fieldMap)),
|
|
// })
|
|
// }
|
|
//
|
|
// return columnsFromCode
|
|
//}
|
|
//
|
|
//func (mm *MigrateExecutor) getIndexesFromCode(typeOf reflect.Type, tableFromCode Table) []Index {
|
|
// var indexesFromCode []Index
|
|
// for i := 0; i < typeOf.Elem().NumField(); i++ {
|
|
// fieldName := aorm.UnderLine(typeOf.Elem().Field(i).Name)
|
|
// fieldMap := getTagMap(typeOf.Elem().Field(i).Tag.Get("aorm"))
|
|
//
|
|
// _, primaryIs := fieldMap["primary"]
|
|
// if primaryIs {
|
|
// indexesFromCode = append(indexesFromCode, Index{
|
|
// NonUnique: aorm.IntFrom(0),
|
|
// ColumnName: aorm.StringFrom(fieldName),
|
|
// KeyName: aorm.StringFrom("PRIMARY"),
|
|
// })
|
|
// }
|
|
//
|
|
// _, uniqueIndexIs := fieldMap["unique"]
|
|
// if uniqueIndexIs {
|
|
// indexesFromCode = append(indexesFromCode, Index{
|
|
// NonUnique: aorm.IntFrom(0),
|
|
// ColumnName: aorm.StringFrom(fieldName),
|
|
// KeyName: aorm.StringFrom("idx_" + tableFromCode.TableName.String + "_" + fieldName),
|
|
// })
|
|
// }
|
|
//
|
|
// _, indexIs := fieldMap["index"]
|
|
// if indexIs {
|
|
// indexesFromCode = append(indexesFromCode, Index{
|
|
// NonUnique: aorm.IntFrom(1),
|
|
// ColumnName: aorm.StringFrom(fieldName),
|
|
// KeyName: aorm.StringFrom("idx_" + tableFromCode.TableName.String + "_" + fieldName),
|
|
// })
|
|
// }
|
|
// }
|
|
//
|
|
// return indexesFromCode
|
|
//}
|
|
//
|
|
//func (mm *MigrateExecutor) getDbName() (string, error) {
|
|
// //获取数据库名称
|
|
// var dbName string
|
|
// err := mm.ex.RawSql("SELECT DATABASE()").Value("DATABASE()", &dbName)
|
|
// if err != nil {
|
|
// return "", err
|
|
// }
|
|
//
|
|
// return dbName, nil
|
|
//}
|
|
//
|
|
//func (mm *MigrateExecutor) getTableFromDb(dbName string, tableName string) []Table {
|
|
// sql := "SELECT TABLE_NAME,ENGINE,TABLE_COMMENT FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_SCHEMA =" + "'" + dbName + "' AND TABLE_NAME =" + "'" + tableName + "'"
|
|
// var dataList []Table
|
|
// mm.ex.RawSql(sql).GetMany(&dataList)
|
|
// for i := 0; i < len(dataList); i++ {
|
|
// dataList[i].TableComment = aorm.StringFrom("'" + dataList[i].TableComment.String + "'")
|
|
// }
|
|
//
|
|
// return dataList
|
|
//}
|
|
//
|
|
//func (mm *MigrateExecutor) getColumnsFromDb(dbName string, tableName string) []Column {
|
|
// var columnsFromDb []Column
|
|
//
|
|
// sqlColumn := "SELECT COLUMN_NAME,DATA_TYPE,CHARACTER_MAXIMUM_LENGTH as Max_Length,COLUMN_DEFAULT,COLUMN_COMMENT,EXTRA,IS_NULLABLE FROM INFORMATION_SCHEMA.COLUMNS WHERE TABLE_SCHEMA =" + "'" + dbName + "' AND TABLE_NAME =" + "'" + tableName + "'"
|
|
// mm.ex.RawSql(sqlColumn).GetMany(&columnsFromDb)
|
|
//
|
|
// for j := 0; j < len(columnsFromDb); j++ {
|
|
// if columnsFromDb[j].DataType.String == "text" && columnsFromDb[j].MaxLength.Int64 == 65535 {
|
|
// columnsFromDb[j].MaxLength = aorm.IntFrom(0)
|
|
// }
|
|
// }
|
|
//
|
|
// return columnsFromDb
|
|
//}
|
|
//
|
|
//func (mm *MigrateExecutor) getIndexesFromDb(tableName string) []Index {
|
|
// sqlIndex := "SHOW INDEXES FROM " + tableName
|
|
//
|
|
// var indexsFromDb []Index
|
|
// mm.ex.RawSql(sqlIndex).GetMany(&indexsFromDb)
|
|
//
|
|
// return indexsFromDb
|
|
//}
|
|
//
|
|
//func (mm *MigrateExecutor) modifyTable(tableFromCode Table, columnsFromCode []Column, indexesFromCode []Index, tableFromDb Table, columnsFromDb []Column, indexsFromDb []Index) {
|
|
// if tableFromCode.Engine != tableFromDb.Engine {
|
|
// mm.modifyTableEngine(tableFromCode)
|
|
// }
|
|
//
|
|
// if tableFromCode.TableComment != tableFromDb.TableComment {
|
|
// mm.modifyTableComment(tableFromCode)
|
|
// }
|
|
//
|
|
// for i := 0; i < len(columnsFromCode); i++ {
|
|
// isFind := 0
|
|
// columnCode := columnsFromCode[i]
|
|
//
|
|
// for j := 0; j < len(columnsFromDb); j++ {
|
|
// columnDb := columnsFromDb[j]
|
|
// if columnCode.ColumnName == columnDb.ColumnName {
|
|
// isFind = 1
|
|
// if columnCode.DataType.String != columnDb.DataType.String ||
|
|
// columnCode.MaxLength.Int64 != columnDb.MaxLength.Int64 ||
|
|
// columnCode.ColumnComment.String != columnDb.ColumnComment.String ||
|
|
// columnCode.Extra.String != columnDb.Extra.String ||
|
|
// columnCode.ColumnDefault.String != columnDb.ColumnDefault.String {
|
|
// sql := "ALTER TABLE " + tableFromCode.TableName.String + " MODIFY " + getColumnStr(columnCode)
|
|
// _, err := mm.ex.Exec(sql)
|
|
// if err != nil {
|
|
// fmt.Println(err)
|
|
// } else {
|
|
// fmt.Println("修改属性:" + sql)
|
|
// }
|
|
// }
|
|
// }
|
|
// }
|
|
//
|
|
// if isFind == 0 {
|
|
// sql := "ALTER TABLE " + tableFromCode.TableName.String + " ADD " + getColumnStr(columnCode)
|
|
// _, err := mm.ex.Exec(sql)
|
|
// if err != nil {
|
|
// fmt.Println(err)
|
|
// } else {
|
|
// fmt.Println("增加属性:" + sql)
|
|
// }
|
|
// }
|
|
// }
|
|
//
|
|
// for i := 0; i < len(indexesFromCode); i++ {
|
|
// isFind := 0
|
|
// indexCode := indexesFromCode[i]
|
|
//
|
|
// for j := 0; j < len(indexsFromDb); j++ {
|
|
// indexDb := indexsFromDb[j]
|
|
// if indexCode.ColumnName == indexDb.ColumnName {
|
|
// isFind = 1
|
|
// if indexCode.KeyName != indexDb.KeyName || indexCode.NonUnique != indexDb.NonUnique {
|
|
// sql := "ALTER TABLE " + tableFromCode.TableName.String + " MODIFY " + getIndexStr(indexCode)
|
|
// _, err := mm.ex.Exec(sql)
|
|
// if err != nil {
|
|
// fmt.Println(err)
|
|
// } else {
|
|
// fmt.Println("修改索引:" + sql)
|
|
// }
|
|
// }
|
|
// }
|
|
// }
|
|
//
|
|
// if isFind == 0 {
|
|
// sql := "ALTER TABLE " + tableFromCode.TableName.String + " ADD " + getIndexStr(indexCode)
|
|
// _, err := mm.ex.Exec(sql)
|
|
// if err != nil {
|
|
// fmt.Println(err)
|
|
// } else {
|
|
// fmt.Println("增加索引:" + sql)
|
|
// }
|
|
// }
|
|
// }
|
|
//}
|
|
//
|
|
//func (mm *MigrateExecutor) modifyTableEngine(tableFromCode Table) {
|
|
// sql := "ALTER TABLE " + tableFromCode.TableName.String + " Engine " + tableFromCode.Engine.String
|
|
// _, err := mm.ex.Exec(sql)
|
|
// if err != nil {
|
|
// fmt.Println(err)
|
|
// } else {
|
|
// fmt.Println("修改表:" + sql)
|
|
// }
|
|
//}
|
|
//
|
|
//func (mm *MigrateExecutor) modifyTableComment(tableFromCode Table) {
|
|
// sql := "ALTER TABLE " + tableFromCode.TableName.String + " Comment " + tableFromCode.TableComment.String
|
|
// _, err := mm.ex.Exec(sql)
|
|
// if err != nil {
|
|
// fmt.Println(err)
|
|
// } else {
|
|
// fmt.Println("修改表:" + sql)
|
|
// }
|
|
//}
|
|
//
|
|
//func (mm *MigrateExecutor) createTable(tableFromCode Table, columnsFromCode []Column, indexesFromCode []Index) {
|
|
// var fieldArr []string
|
|
//
|
|
// for i := 0; i < len(columnsFromCode); i++ {
|
|
// column := columnsFromCode[i]
|
|
// fieldArr = append(fieldArr, getColumnStr(column))
|
|
// }
|
|
//
|
|
// for i := 0; i < len(indexesFromCode); i++ {
|
|
// index := indexesFromCode[i]
|
|
// fieldArr = append(fieldArr, getIndexStr(index))
|
|
// }
|
|
//
|
|
// sqlStr := "CREATE TABLE `" + tableFromCode.TableName.String + "` (\n" + strings.Join(fieldArr, ",\n") + "\n) " + " ENGINE " + tableFromCode.Engine.String + " COMMENT " + tableFromCode.TableComment.String + ";"
|
|
// _, err := mm.ex.Exec(sqlStr)
|
|
// if err != nil {
|
|
// fmt.Println(err)
|
|
// } else {
|
|
// fmt.Println("创建表:" + tableFromCode.TableName.String)
|
|
// }
|
|
//}
|
|
//
|
|
//func (mm *MigrateExecutor) getOpinionVal(key string, def string) string {
|
|
// opinions := mm.ex.GetOpinionList()
|
|
// for i := 0; i < len(opinions); i++ {
|
|
// opinionItem := opinions[i]
|
|
// if opinionItem.Key == key {
|
|
// def = opinionItem.Val
|
|
// }
|
|
// }
|
|
// return def
|
|
//}
|
|
//
|
|
//func getTagMap(fieldTag string) map[string]string {
|
|
// var fieldMap = make(map[string]string)
|
|
// if "" != fieldTag {
|
|
// tagArr := strings.Split(fieldTag, ";")
|
|
// for j := 0; j < len(tagArr); j++ {
|
|
// tagArrArr := strings.Split(tagArr[j], ":")
|
|
// fieldMap[tagArrArr[0]] = ""
|
|
// if len(tagArrArr) > 1 {
|
|
// fieldMap[tagArrArr[0]] = tagArrArr[1]
|
|
// }
|
|
// }
|
|
// }
|
|
// return fieldMap
|
|
//}
|
|
//
|
|
//func getColumnStr(column Column) string {
|
|
// var strArr []string
|
|
// strArr = append(strArr, column.ColumnName.String)
|
|
// if column.MaxLength.Int64 == 0 {
|
|
// if column.DataType.String == "varchar" {
|
|
// strArr = append(strArr, column.DataType.String+"(255)")
|
|
// } else {
|
|
// strArr = append(strArr, column.DataType.String)
|
|
// }
|
|
// } else {
|
|
// strArr = append(strArr, column.DataType.String+"("+strconv.Itoa(int(column.MaxLength.Int64))+")")
|
|
// }
|
|
//
|
|
// if column.ColumnDefault.String != "" {
|
|
// strArr = append(strArr, "DEFAULT '"+column.ColumnDefault.String+"'")
|
|
// }
|
|
//
|
|
// if column.IsNullable.String == "NO" {
|
|
// strArr = append(strArr, "NOT NULL")
|
|
// }
|
|
//
|
|
// if column.ColumnComment.String != "" {
|
|
// strArr = append(strArr, "COMMENT '"+column.ColumnComment.String+"'")
|
|
// }
|
|
//
|
|
// if column.Extra.String != "" {
|
|
// strArr = append(strArr, column.Extra.String)
|
|
// }
|
|
//
|
|
// return strings.Join(strArr, " ")
|
|
//}
|
|
//
|
|
//func getIndexStr(index Index) string {
|
|
// var strArr []string
|
|
//
|
|
// if "PRIMARY" == index.KeyName.String {
|
|
// strArr = append(strArr, index.KeyName.String)
|
|
// strArr = append(strArr, "KEY")
|
|
// strArr = append(strArr, "(`"+index.ColumnName.String+"`)")
|
|
// } else {
|
|
// if 0 == index.NonUnique.Int64 {
|
|
// strArr = append(strArr, "Unique")
|
|
// strArr = append(strArr, index.KeyName.String)
|
|
// strArr = append(strArr, "(`"+index.ColumnName.String+"`)")
|
|
// } else {
|
|
// strArr = append(strArr, "Index")
|
|
// strArr = append(strArr, index.KeyName.String)
|
|
// strArr = append(strArr, "(`"+index.ColumnName.String+"`)")
|
|
// }
|
|
// }
|
|
//
|
|
// return strings.Join(strArr, " ")
|
|
//}
|
|
//
|
|
//func getDataType(fieldType string, fieldMap map[string]string) string {
|
|
// var DataType string
|
|
//
|
|
// dataTypeVal, dataTypeOk := fieldMap["type"]
|
|
// if dataTypeOk {
|
|
// DataType = dataTypeVal
|
|
// } else {
|
|
// if "Int" == fieldType {
|
|
// DataType = "int"
|
|
// }
|
|
// if "String" == fieldType {
|
|
// DataType = "varchar"
|
|
// }
|
|
// if "Bool" == fieldType {
|
|
// DataType = "tinyint"
|
|
// }
|
|
// if "Time" == fieldType {
|
|
// DataType = "datetime"
|
|
// }
|
|
// if "Float" == fieldType {
|
|
// DataType = "float"
|
|
// }
|
|
// }
|
|
//
|
|
// return DataType
|
|
//}
|
|
//
|
|
//func getMaxLength(DataType string, fieldMap map[string]string) int {
|
|
// var MaxLength int
|
|
//
|
|
// maxLengthVal, maxLengthOk := fieldMap["size"]
|
|
// if maxLengthOk {
|
|
// num, _ := strconv.Atoi(maxLengthVal)
|
|
// MaxLength = num
|
|
// } else {
|
|
// MaxLength = 0
|
|
// if "varchar" == DataType {
|
|
// MaxLength = 255
|
|
// }
|
|
// }
|
|
//
|
|
// return MaxLength
|
|
//}
|
|
//
|
|
//func getNullAble(fieldMap map[string]string) string {
|
|
// var IsNullable string
|
|
//
|
|
// _, primaryOk := fieldMap["primary"]
|
|
// if primaryOk {
|
|
// IsNullable = "NO"
|
|
// } else {
|
|
// _, ok := fieldMap["not null"]
|
|
// if ok {
|
|
// IsNullable = "NO"
|
|
// } else {
|
|
// IsNullable = "YES"
|
|
// }
|
|
// }
|
|
//
|
|
// return IsNullable
|
|
//}
|
|
//
|
|
//func getComment(fieldMap map[string]string) string {
|
|
// commentVal, commentIs := fieldMap["comment"]
|
|
// if commentIs {
|
|
// return commentVal
|
|
// }
|
|
//
|
|
// return ""
|
|
//}
|
|
//
|
|
//func getExtra(fieldMap map[string]string) string {
|
|
// _, commentIs := fieldMap["auto_increment"]
|
|
// if commentIs {
|
|
// return "auto_increment"
|
|
// }
|
|
//
|
|
// return ""
|
|
//}
|
|
//
|
|
//func getDefaultVal(fieldMap map[string]string) string {
|
|
// defaultVal, defaultIs := fieldMap["default"]
|
|
// if defaultIs {
|
|
// return defaultVal
|
|
// }
|
|
//
|
|
// return ""
|
|
//}
|