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migrator.go
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migrator.go
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package korm
import (
"context"
"errors"
"fmt"
"reflect"
"strings"
"time"
"github.com/kamalshkeir/kstrct"
"github.com/kamalshkeir/lg"
)
// CREATE TRIGGER IF NOT EXISTS users_update_trig AFTER UPDATE ON
func checkUpdatedAtTrigger(dialect, tableName, col, pk string) map[string][]string {
triggers := map[string][]string{}
t := "strftime('%s', 'now')"
if dialect == SQLITE || dialect == "sqlite" {
st := "CREATE TRIGGER IF NOT EXISTS "
st += tableName + "_update_trig AFTER UPDATE ON " + tableName
st += " BEGIN update " + tableName + " SET " + col + " = " + t
st += " WHERE " + pk + " = " + "NEW." + pk + ";"
st += "End;"
triggers[col] = []string{st}
} else if dialect == POSTGRES {
st := "CREATE OR REPLACE FUNCTION updated_at_trig() RETURNS trigger AS $$"
st += " BEGIN NEW." + col + " = extract(epoch from now());RETURN NEW;"
st += "END;$$ LANGUAGE plpgsql;"
triggers[col] = []string{st}
trigCreate := "CREATE OR REPLACE TRIGGER " + tableName + "_update_trig"
trigCreate += " BEFORE UPDATE ON public." + tableName
trigCreate += " FOR EACH ROW EXECUTE PROCEDURE updated_at_trig();"
triggers[col] = append(triggers[col], trigCreate)
} else {
return nil
}
return triggers
}
func autoMigrate[T any](model *T, db *DatabaseEntity, tableName string, execute bool) (string, error) {
toReturnstats := []string{}
dialect := db.Dialect
s := reflect.ValueOf(model).Elem()
typeOfT := s.Type()
mFieldName_Type := map[string]string{}
mFieldName_Tags := map[string][]string{}
cols := []string{}
pk := ""
for i := 0; i < s.NumField(); i++ {
f := s.Field(i)
fname := typeOfT.Field(i).Name
fname = kstrct.ToSnakeCase(fname)
ftype := f.Type()
if ftype.Kind() == reflect.Ptr {
mFieldName_Type[fname] = ftype.Elem().String()
} else {
mFieldName_Type[fname] = ftype.String()
}
if ftag, ok := typeOfT.Field(i).Tag.Lookup("korm"); ok {
tags := strings.Split(ftag, ";")
for i, tag := range tags {
if ftag == "-" {
continue
}
tag := strings.TrimSpace(tag)
if tag == "autoinc" || tag == "pk" || fname == "id" {
pk = fname
}
tags[i] = strings.TrimSpace(tags[i])
}
mFieldName_Tags[fname] = tags
} else if ftag, ok := typeOfT.Field(i).Tag.Lookup("kstrct"); ok {
if ftag == "-" {
continue
}
}
cols = append(cols, fname)
}
if pk == "" {
cols = append([]string{"id"}, cols...)
mFieldName_Type["id"] = "uint"
mFieldName_Tags["id"] = []string{"pk"}
pk = "id"
}
res := map[string]string{}
fkeys := []string{}
indexes := []string{}
mindexes := map[string]string{}
uindexes := map[string]string{}
var mi *migrationInput
for _, fName := range cols {
if ty, ok := mFieldName_Type[fName]; ok {
mi = &migrationInput{
table: tableName,
dialect: dialect,
fName: fName,
fType: ty,
fTags: &mFieldName_Tags,
fKeys: &fkeys,
res: &res,
indexes: &indexes,
mindexes: &mindexes,
uindexes: &uindexes,
}
if ty[0] != '[' && strings.Contains(ty, "int") {
if ty[0] != '*' && ty[1] != '[' {
handleMigrationInt(mi)
}
}
switch ty {
case "bool", "*bool":
handleMigrationBool(mi)
case "string", "*string", "[]string", "[]int", "[]int64", "[]float64", "[]any":
handleMigrationString(mi)
case "[]uint8", "[]byte", "*[]uint8", "*[]byte":
handleMigrationSliceByte(mi)
case "float64", "float32", "*float64", "*float32":
handleMigrationFloat(mi)
case "time.Time", "*time.Time":
handleMigrationTime(mi)
default:
if tags, ok := mFieldName_Tags[fName]; ok {
if !strings.Contains(strings.Join(tags, ","), "generated") && !strings.Contains(ty, "int") {
lg.Errorf("%s of type %s not handled", fName, ty)
}
}
}
}
}
statement := prepareCreateStatement(tableName, res, fkeys, cols)
var triggers map[string][]string
// check for update field to create a trigger
if db.Dialect != MYSQL && db.Dialect != MARIA {
for col, tags := range mFieldName_Tags {
for _, tag := range tags {
if tag == "update" {
triggers = checkUpdatedAtTrigger(db.Dialect, tableName, col, pk)
}
}
}
}
if Debug {
lg.InfoC("debug", "stat", statement)
}
c, cancel := context.WithTimeout(context.TODO(), 5*time.Second)
defer cancel()
if execute {
ress, err := db.Conn.ExecContext(c, statement)
if lg.CheckError(err) {
lg.InfoC("debug", "stat", statement)
return "", err
}
_, err = ress.RowsAffected()
if err != nil {
return "", err
}
}
toReturnstats = append(toReturnstats, statement)
if !strings.HasSuffix(tableName, "_temp") {
if len(triggers) > 0 {
for _, stats := range triggers {
for _, st := range stats {
if Debug {
lg.Printfs("trigger updated_at %s: %s\n", tableName, st)
}
if execute {
err := Exec(db.Name, st)
if lg.CheckError(err) {
lg.Printfs("rdtrigger updated_at %s: %s\n", tableName, st)
return "", err
}
}
toReturnstats = append(toReturnstats, st)
}
}
}
statIndexes := ""
if len(indexes) > 0 {
for _, col := range indexes {
ff := strings.ReplaceAll(col, "DESC", "")
statIndexes += fmt.Sprintf("CREATE INDEX idx_%s_%s ON %s (%s);", tableName, ff, tableName, col)
}
}
mstatIndexes := ""
if len(*mi.mindexes) > 0 {
for k, v := range *mi.mindexes {
ff := strings.ReplaceAll(k, "DESC", "")
mstatIndexes = fmt.Sprintf("CREATE INDEX idx_%s_%s ON %s (%s)", tableName, ff, tableName, k+","+v)
}
}
ustatIndexes := []string{}
for col, tagValue := range *mi.uindexes {
sp := strings.Split(tagValue, ",")
for i := range sp {
if sp[i][0] == 'I' && db.Dialect != MYSQL && db.Dialect != MARIA {
sp[i] = "LOWER(" + sp[i][1:] + ")"
}
}
res := strings.Join(sp, ",")
ustatIndexes = append(ustatIndexes, fmt.Sprintf("CREATE UNIQUE INDEX idx_%s_%s ON %s (%s)", tableName, col, tableName, res))
}
statIndexesExecuted := false
if statIndexes != "" {
if Debug {
lg.Printfs("%s\n", statIndexes)
}
if execute && !statIndexesExecuted {
_, err := db.Conn.Exec(statIndexes)
if lg.CheckError(err) {
lg.Printfs("rdindexes: %s\n", statIndexes)
return "", err
}
statIndexesExecuted = true
}
toReturnstats = append(toReturnstats, statIndexes)
}
if mstatIndexes != "" {
if Debug {
lg.Printfs("mindexes: %s\n", mstatIndexes)
}
if execute {
_, err := db.Conn.Exec(mstatIndexes)
if lg.CheckError(err) {
lg.Printfs("rdmindexes: %s\n", mstatIndexes)
return "", err
}
}
toReturnstats = append(toReturnstats, mstatIndexes)
}
if len(ustatIndexes) > 0 {
for i := range ustatIndexes {
if Debug {
lg.Printfs("uindexes: %s\n", ustatIndexes[i])
}
if execute {
_, err := db.Conn.Exec(ustatIndexes[i])
if lg.CheckError(err) {
lg.Printfs("rduindexes: %s\n", ustatIndexes)
return "", err
}
}
toReturnstats = append(toReturnstats, ustatIndexes[i])
}
}
}
if execute && Debug {
lg.Printfs("gr %s migrated\n", tableName)
}
toReturnQuery := strings.Join(toReturnstats, ";")
return toReturnQuery, nil
}
func AutoMigrate[T any](tableName string, dbName ...string) error {
mutexModelTablename.Lock()
foundm := false
for k := range mModelTablename {
if k == tableName {
foundm = true
}
}
if !foundm {
mModelTablename[tableName] = *new(T)
}
mutexModelTablename.Unlock()
var db *DatabaseEntity
var err error
dbname := ""
if len(dbName) == 1 {
dbname = dbName[0]
db, err = GetMemoryDatabase(dbname)
if err != nil || db == nil {
return errors.New("database not found")
}
} else if len(dbName) == 0 {
dbname = databases[0].Name
db, err = GetMemoryDatabase(dbname)
if err != nil || db == nil {
return errors.New("database not found")
}
} else {
return errors.New("cannot migrate more than one database at the same time")
}
tbFoundDB := false
tables := GetAllTables(dbname)
for _, t := range tables {
if t == tableName {
tbFoundDB = true
}
}
if !tbFoundDB {
_, err := autoMigrate(new(T), db, tableName, true)
if lg.CheckError(err) {
return err
}
}
for _, t := range db.Tables {
if t.Name == tableName {
return nil
}
}
LinkModel[T](tableName, db.Name)
return nil
}
type migrationInput struct {
table string
dialect string
fName string
fType string
fTags *map[string][]string
fKeys *[]string
res *map[string]string
indexes *[]string
mindexes *map[string]string
uindexes *map[string]string
}
func handleMigrationInt(mi *migrationInput) {
genas, primary, index, autoinc, notnull, defaultt, checks, unique := "", "", "", "", "", "", []string{}, ""
tags := (*mi.fTags)[mi.fName]
if len(tags) == 1 && tags[0] == "-" {
(*mi.res)[mi.fName] = ""
return
}
for _, tag := range tags {
if !strings.Contains(tag, ":") {
switch tag {
case "autoinc", "pk":
switch mi.dialect {
case SQLITE, "":
autoinc = "INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT"
case POSTGRES:
autoinc = "SERIAL NOT NULL PRIMARY KEY"
case MYSQL, MARIA:
autoinc = "INTEGER NOT NULL PRIMARY KEY AUTO_INCREMENT"
default:
lg.ErrorC("not supported dialect")
}
case "notnull":
notnull = " NOT NULL"
case "index", "+index", "index+":
*mi.indexes = append(*mi.indexes, mi.fName)
case "-index", "index-":
*mi.indexes = append(*mi.indexes, mi.fName+" DESC")
case "unique":
unique = " UNIQUE"
case "default":
defaultt = " DEFAULT 0"
default:
lg.ErrorC("tag not handled", "tag", tag)
}
} else {
// with params
sp := strings.Split(tag, ":")
tg := sp[0]
switch tg {
case "default":
defaultt = " DEFAULT " + sp[1]
case "generated":
sp[1] = adaptConcatAndLen(sp[1], mi.dialect)
genas = " GENERATED ALWAYS AS (" + sp[1] + ") STORED "
case "fk":
ref := strings.Split(sp[1], ".")
if len(ref) == 2 {
fkey := "FOREIGN KEY (" + mi.fName + ") REFERENCES " + ref[0] + "(" + ref[1] + ")"
if len(sp) > 2 {
switch sp[2] {
case "cascade":
fkey += " ON DELETE CASCADE"
case "donothing", "noaction":
fkey += " ON DELETE NO ACTION"
case "setnull", "null":
fkey += " ON DELETE SET NULL"
case "setdefault", "default":
fkey += " ON DELETE SET DEFAULT"
default:
lg.ErrorC("fk not handled", "fk", sp[2])
}
if len(sp) > 3 {
switch sp[3] {
case "cascade":
fkey += " ON UPDATE CASCADE"
case "donothing", "noaction":
fkey += " ON UPDATE NO ACTION"
case "setnull", "null":
fkey += " ON UPDATE SET NULL"
case "setdefault", "default":
fkey += " ON UPDATE SET DEFAULT"
default:
lg.ErrorC("fk not handled", "fk", sp[3])
}
}
}
*mi.fKeys = append(*mi.fKeys, fkey)
} else {
lg.ErrorC("allowed options cascade/donothing/noaction")
}
case "check":
sp[1] = adaptConcatAndLen(sp[1], mi.dialect)
checks = append(checks, strings.TrimSpace(sp[1]))
case "mindex":
if v, ok := (*mi.mindexes)[mi.fName]; ok {
if v == "" {
(*mi.mindexes)[mi.fName] = sp[1]
} else if strings.Contains(sp[1], ",") {
(*mi.mindexes)[mi.fName] += "," + sp[1]
} else {
lg.ErrorC("mindex not working for", "fname", mi.fName, "sp", sp[1])
}
} else {
(*mi.mindexes)[mi.fName] = sp[1]
}
case "uindex":
if v, ok := (*mi.uindexes)[mi.fName]; ok {
if v == "" {
(*mi.uindexes)[mi.fName] = sp[1]
} else if strings.Contains(sp[1], ",") {
(*mi.uindexes)[mi.fName] += "," + sp[1]
} else {
lg.ErrorC("mindex not working for", "fname", mi.fName, "sp", sp[1])
}
} else {
(*mi.uindexes)[mi.fName] = sp[1]
}
default:
lg.ErrorC("MIGRATION INT: not handled for field", "fname", mi.fName, "v", sp[0], "tag", tag)
}
}
}
if autoinc != "" {
// integer auto increment
(*mi.res)[mi.fName] = autoinc
} else {
// integer normal
(*mi.res)[mi.fName] = "INTEGER"
if primary != "" {
(*mi.res)[mi.fName] += primary
} else {
if notnull != "" {
(*mi.res)[mi.fName] += notnull
}
}
if unique != "" {
(*mi.res)[mi.fName] += unique
}
if index != "" {
(*mi.res)[mi.fName] += index
}
if defaultt != "" {
if genas == "" {
(*mi.res)[mi.fName] += defaultt
} else {
(*mi.res)[mi.fName] += genas
}
} else if genas != "" {
(*mi.res)[mi.fName] += genas
}
if len(checks) > 0 {
joined := strings.TrimSpace(strings.Join(checks, " AND "))
(*mi.res)[mi.fName] += " CHECK(" + joined + ")"
}
}
}
func handleMigrationBool(mi *migrationInput) {
defaultt := ""
tags := (*mi.fTags)[mi.fName]
if len(tags) == 1 && tags[0] == "-" {
(*mi.res)[mi.fName] = ""
return
} else if len(tags) == 0 {
(*mi.res)[mi.fName] = "INTEGER DEFAULT 0 CHECK (" + mi.fName + " IN (0, 1))"
return
}
for _, tag := range tags {
if strings.Contains(tag, ":") {
sp := strings.Split(tag, ":")
switch sp[0] {
case "default":
if sp[1] != "" {
if strings.Contains(sp[1], "true") {
defaultt = " DEFAULT 1"
} else if strings.Contains(sp[1], "false") {
defaultt = " DEFAULT 0"
} else {
defaultt = " DEFAULT " + sp[1]
}
} else {
defaultt = " DEFAULT 0"
}
case "mindex":
if v, ok := (*mi.mindexes)[mi.fName]; ok {
if v == "" {
(*mi.mindexes)[mi.fName] = sp[1]
} else if strings.Contains(sp[1], ",") {
(*mi.mindexes)[mi.fName] += "," + sp[1]
} else {
lg.ErrorC("mindex not working for", "field", mi.fName, "v", sp[1])
}
} else {
(*mi.mindexes)[mi.fName] = sp[1]
}
case "fk":
ref := strings.Split(sp[1], ".")
if len(ref) == 2 {
fkey := "FOREIGN KEY(" + mi.fName + ") REFERENCES " + ref[0] + "(" + ref[1] + ")"
if len(sp) > 2 {
switch sp[2] {
case "cascade":
fkey += " ON DELETE CASCADE"
case "donothing", "noaction":
fkey += " ON DELETE NO ACTION"
case "setnull", "null":
fkey += " ON DELETE SET NULL"
case "setdefault", "default":
fkey += " ON DELETE SET DEFAULT"
default:
lg.ErrorC("fk not handled action", "ac", sp[2])
}
if len(sp) > 3 {
switch sp[3] {
case "cascade":
fkey += " ON UPDATE CASCADE"
case "donothing", "noaction":
fkey += " ON UPDATE NO ACTION"
case "setnull", "null":
fkey += " ON UPDATE SET NULL"
case "setdefault", "default":
fkey += " ON UPDATE SET DEFAULT"
default:
lg.ErrorC("fk not handled action", "ac", sp[3])
}
}
}
*mi.fKeys = append(*mi.fKeys, fkey)
} else {
lg.ErrorC("fk should be fk:users.id:cascade/donothing")
}
default:
lg.ErrorC("not handled migration bool", "v", sp[0], "field", mi.fName)
}
} else {
switch tag {
case "index", "+index", "index+":
*mi.indexes = append(*mi.indexes, mi.fName)
case "-index", "index-":
*mi.indexes = append(*mi.indexes, mi.fName+" DESC")
case "default":
defaultt = " DEFAULT 0"
default:
lg.ErrorC("not handled in Migration Bool", "tag", tag)
}
}
}
if defaultt != "" {
(*mi.res)[mi.fName] = "INTEGER" + defaultt + " CHECK (" + mi.fName + " IN (0, 1))"
}
if (*mi.res)[mi.fName] == "" {
(*mi.res)[mi.fName] = "INTEGER DEFAULT 0 CHECK (" + mi.fName + " IN (0, 1))"
}
}
func handleMigrationString(mi *migrationInput) {
unique, notnull, text, json, defaultt, genas, size, pk, checks := "", "", "", "", "", "", "", "", []string{}
tags := (*mi.fTags)[mi.fName]
if len(tags) == 1 && tags[0] == "-" {
(*mi.res)[mi.fName] = ""
return
}
for _, tag := range tags {
if !strings.Contains(tag, ":") {
switch tag {
case "text":
text = "TEXT"
case "json":
json = "TEXT"
if mi.dialect != SQLITE {
json = "JSONB"
}
case "notnull":
notnull = " NOT NULL"
case "index", "+index", "index+":
*mi.indexes = append(*mi.indexes, mi.fName)
case "-index", "index-":
*mi.indexes = append(*mi.indexes, mi.fName+" DESC")
case "unique":
unique = " UNIQUE"
case "iunique":
unique = " UNIQUE"
s := ""
if mi.dialect != "mysql" {
s = "I"
}
(*mi.uindexes)[mi.fName] = s + mi.fName
case "default":
defaultt = " DEFAULT ''"
default:
lg.ErrorC("not handled migration String", "tag", tag)
}
} else {
sp := strings.Split(tag, ":")
switch sp[0] {
case "default":
defaultt = " DEFAULT " + sp[1]
case "generated":
sp[1] = adaptConcatAndLen(sp[1], mi.dialect)
genas = " GENERATED ALWAYS AS (" + sp[1] + ") STORED "
case "mindex":
if v, ok := (*mi.mindexes)[mi.fName]; ok {
if v == "" {
(*mi.mindexes)[mi.fName] = sp[1]
} else if strings.Contains(sp[1], ",") {
(*mi.mindexes)[mi.fName] += "," + sp[1]
} else {
lg.ErrorC("mindex not working", "f", mi.fName, "v", sp[1])
}
} else {
(*mi.mindexes)[mi.fName] = sp[1]
}
case "uindex":
if v, ok := (*mi.uindexes)[mi.fName]; ok {
if v == "" {
(*mi.uindexes)[mi.fName] = sp[1]
} else if strings.Contains(sp[1], ",") {
(*mi.uindexes)[mi.fName] += "," + sp[1]
} else {
lg.ErrorC("mindex not working", "f", mi.fName, "v", sp[1])
}
} else {
(*mi.uindexes)[mi.fName] = sp[1]
}
case "fk":
ref := strings.Split(sp[1], ".")
if len(ref) == 2 {
fkey := "FOREIGN KEY(" + mi.fName + ") REFERENCES " + ref[0] + "(" + ref[1] + ")"
if len(sp) > 2 {
switch sp[2] {
case "cascade":
fkey += " ON DELETE CASCADE"
case "donothing", "noaction":
fkey += " ON DELETE NO ACTION"
case "setnull", "null":
fkey += " ON DELETE SET NULL"
case "setdefault", "default":
fkey += " ON DELETE SET DEFAULT"
default:
lg.ErrorC("fk not handled", "fk", sp[2])
}
if len(sp) > 3 {
switch sp[3] {
case "cascade":
fkey += " ON UPDATE CASCADE"
case "donothing", "noaction":
fkey += " ON UPDATE NO ACTION"
case "setnull", "null":
fkey += " ON UPDATE SET NULL"
case "setdefault", "default":
fkey += " ON UPDATE SET DEFAULT"
default:
lg.ErrorC("fk not handled", "fk", sp[3])
}
}
}
*mi.fKeys = append(*mi.fKeys, fkey)
} else {
lg.ErrorC("foreign key should be like fk:table.column:[cascade/donothing]:[cascade/donothing]")
}
case "size":
sp := strings.Split(tag, ":")
if sp[0] == "size" {
size = sp[1]
}
case "check":
sp[1] = adaptConcatAndLen(sp[1], mi.dialect)
checks = append(checks, strings.TrimSpace(sp[1]))
default:
lg.ErrorC("migration String not handled for", "v", sp[0], "tag", tag, "f", mi.fName)
}
}
}
if text != "" {
(*mi.res)[mi.fName] = text
} else if json != "" {
(*mi.res)[mi.fName] = json
} else {
if size != "" {
(*mi.res)[mi.fName] = "VARCHAR(" + size + ")"
} else {
(*mi.res)[mi.fName] = "VARCHAR(255)"
}
}
if unique != "" && pk == "" {
(*mi.res)[mi.fName] += unique
}
if notnull != "" && pk == "" {
(*mi.res)[mi.fName] += notnull
}
if pk != "" {
(*mi.res)[mi.fName] += pk
}
if defaultt != "" {
if genas == "" {
(*mi.res)[mi.fName] += defaultt
} else {
(*mi.res)[mi.fName] += genas
}
} else if genas != "" {
(*mi.res)[mi.fName] += genas
}
if len(checks) > 0 {
joined := strings.TrimSpace(strings.Join(checks, " AND "))
(*mi.res)[mi.fName] += " CHECK(" + joined + ")"
}
}
func handleMigrationSliceByte(mi *migrationInput) {
unique, notnull, defaultt, genas, size, json, pk, checks := "", "", "", "", "", "", "", []string{}
tags := (*mi.fTags)[mi.fName]
if len(tags) == 1 && tags[0] == "-" {
(*mi.res)[mi.fName] = ""
return
}
for _, tag := range tags {
if !strings.Contains(tag, ":") {
switch tag {
case "text":
json = "TEXT"
case "json":
json = "TEXT"
if mi.dialect != SQLITE {
json = "JSONB"
}
case "notnull":
notnull = " NOT NULL"
case "index", "+index", "index+":
*mi.indexes = append(*mi.indexes, mi.fName)
case "-index", "index-":
*mi.indexes = append(*mi.indexes, mi.fName+" DESC")
case "unique":
unique = " UNIQUE"
case "iunique":
unique = " UNIQUE"
s := ""
if mi.dialect != "mysql" {
s = "I"
}
(*mi.uindexes)[mi.fName] = s + mi.fName
case "default":
defaultt = " DEFAULT ''"
default:
lg.ErrorC("tag not handled for migration string", "tag", tag)
}
} else {
sp := strings.Split(tag, ":")
switch sp[0] {
case "default":
defaultt = " DEFAULT " + sp[1]
case "generated":
sp[1] = adaptConcatAndLen(sp[1], mi.dialect)
genas = " GENERATED ALWAYS AS (" + sp[1] + ") STORED "
case "mindex":
if v, ok := (*mi.mindexes)[mi.fName]; ok {
if v == "" {
(*mi.mindexes)[mi.fName] = sp[1]
} else if strings.Contains(sp[1], ",") {
(*mi.mindexes)[mi.fName] += "," + sp[1]
} else {
lg.ErrorC("mindex not working", "f", mi.fName, "v", sp[1])
}
} else {
(*mi.mindexes)[mi.fName] = sp[1]
}
case "uindex":
if v, ok := (*mi.uindexes)[mi.fName]; ok {
if v == "" {
(*mi.uindexes)[mi.fName] = sp[1]
} else if strings.Contains(sp[1], ",") {
(*mi.uindexes)[mi.fName] += "," + sp[1]
} else {
lg.ErrorC("mindex not working", "f", mi.fName, "v", sp[1])
}
} else {
(*mi.uindexes)[mi.fName] = sp[1]
}
case "fk":
ref := strings.Split(sp[1], ".")
if len(ref) == 2 {
fkey := "FOREIGN KEY(" + mi.fName + ") REFERENCES " + ref[0] + "(" + ref[1] + ")"
if len(sp) > 2 {
switch sp[2] {
case "cascade":
fkey += " ON DELETE CASCADE"
case "donothing", "noaction":
fkey += " ON DELETE NO ACTION"
case "setnull", "null":
fkey += " ON DELETE SET NULL"
case "setdefault", "default":
fkey += " ON DELETE SET DEFAULT"
default:
lg.ErrorC("fk not handled", "v", sp[2])
}
if len(sp) > 3 {
switch sp[3] {
case "cascade":
fkey += " ON UPDATE CASCADE"
case "donothing", "noaction":
fkey += " ON UPDATE NO ACTION"
case "setnull", "null":
fkey += " ON UPDATE SET NULL"
case "setdefault", "default":
fkey += " ON UPDATE SET DEFAULT"
default:
lg.ErrorC("fk not handled", "v", sp[3])
}
}
}
*mi.fKeys = append(*mi.fKeys, fkey)
} else {
lg.ErrorC("foreign key should be like fk:table.column:[cascade/donothing]:[cascade/donothing]")
}
case "size":
sp := strings.Split(tag, ":")
if sp[0] == "size" {
size = sp[1]
}
case "check":
sp[1] = adaptConcatAndLen(sp[1], mi.dialect)
checks = append(checks, strings.TrimSpace(sp[1]))
default:
lg.ErrorC("Migration string not handled", "v", sp[0], "tag", tag, "f", mi.fName)
}
}
}
if json == "" {
if size == "" {
if mi.dialect == "postgres" || mi.dialect == "pg" {
(*mi.res)[mi.fName] = "BYTEA"
} else {
(*mi.res)[mi.fName] = "BLOB"
}
} else {
switch mi.dialect {
case "mysql":
(*mi.res)[mi.fName] = "VARBINARY(" + size + ")"
case "postgres", "pg":
(*mi.res)[mi.fName] = "BIT VARYING(" + size + ")"
default:
(*mi.res)[mi.fName] = "BLOB"
}
}
} else {
(*mi.res)[mi.fName] = json
}
if unique != "" && pk == "" {
(*mi.res)[mi.fName] += unique
}
if notnull != "" && pk == "" {
(*mi.res)[mi.fName] += notnull
}
if pk != "" {
(*mi.res)[mi.fName] += pk
}
if defaultt != "" {
if genas == "" {
(*mi.res)[mi.fName] += defaultt
} else {
(*mi.res)[mi.fName] += genas
}
} else if genas != "" {
(*mi.res)[mi.fName] += genas
}
if len(checks) > 0 {
joined := strings.TrimSpace(strings.Join(checks, " AND "))
(*mi.res)[mi.fName] += " CHECK(" + joined + ")"
}
}
func handleMigrationFloat(mi *migrationInput) {
mtags := map[string]string{}
tags := (*mi.fTags)[mi.fName]
if len(tags) == 0 {
(*mi.res)[mi.fName] = "DECIMAL(10,5)"
return
}
if len(tags) == 1 && tags[0] == "-" {
(*mi.res)[mi.fName] = ""
return
}
for _, tag := range tags {
if !strings.Contains(tag, ":") {
switch tag {
case "notnull":
mtags["notnull"] = " NOT NULL"
case "index", "+index", "index+":
*mi.indexes = append(*mi.indexes, mi.fName)
case "-index", "index-":
*mi.indexes = append(*mi.indexes, mi.fName+" DESC")
case "unique":
(*mi.uindexes)[mi.fName] = " UNIQUE"
case "default":
mtags["default"] = " DEFAULT 0.00"
default:
lg.ErrorC("tag not handled for migration float", "tag", tag)
}
} else {
sp := strings.Split(tag, ":")
switch sp[0] {
case "default":
if sp[1] != "" {
mtags["default"] = " DEFAULT " + sp[1]
}
case "generated":
sp[1] = adaptConcatAndLen(sp[1], mi.dialect)
mtags["default"] = " GENERATED ALWAYS AS (" + sp[1] + ") STORED "
case "fk":
ref := strings.Split(sp[1], ".")
if len(ref) == 2 {
fkey := "FOREIGN KEY(" + mi.fName + ") REFERENCES " + ref[0] + "(" + ref[1] + ")"
if len(sp) > 2 {
switch sp[2] {
case "cascade":
fkey += " ON DELETE CASCADE"
case "donothing", "noaction":
fkey += " ON DELETE NO ACTION"
case "setnull", "null":
fkey += " ON DELETE SET NULL"
case "setdefault", "default":
fkey += " ON DELETE SET DEFAULT"
default:
lg.ErrorC("fk not handled action", "action", sp[2])
}
if len(sp) > 3 {
switch sp[3] {
case "cascade":
fkey += " ON UPDATE CASCADE"
case "donothing", "noaction":
fkey += " ON UPDATE NO ACTION"
case "setnull", "null":
fkey += " ON UPDATE SET NULL"
case "setdefault", "default":
fkey += " ON UPDATE SET DEFAULT"
default:
lg.ErrorC("fk not handled", "action", sp[3])
}
}
}
*mi.fKeys = append(*mi.fKeys, fkey)
} else {
lg.ErrorC("foreign key should be like fk:table.column:[cascade/donothing]")
}
case "mindex":
if v, ok := (*mi.mindexes)[mi.fName]; ok {
if v == "" {
(*mi.mindexes)[mi.fName] = sp[1]
} else if strings.Contains(sp[1], ",") {
(*mi.mindexes)[mi.fName] += "," + sp[1]
} else {
lg.ErrorC("mindex not working for", "f", mi.fName, "v", sp[1])
}
} else {
(*mi.mindexes)[mi.fName] = sp[1]
}
case "uindex":
if v, ok := (*mi.uindexes)[mi.fName]; ok {
if v == "" {
(*mi.uindexes)[mi.fName] = sp[1]
} else if strings.Contains(sp[1], ",") {
(*mi.uindexes)[mi.fName] += "," + sp[1]
} else {
lg.ErrorC("mindex not working", "f", mi.fName, "v", sp[1])
}
} else {
(*mi.uindexes)[mi.fName] = sp[1]
}
case "check":
sp[1] = adaptConcatAndLen(sp[1], mi.dialect)
if v, ok := mtags["check"]; ok && v != "" {
mtags["check"] += " AND " + strings.TrimSpace(sp[1])
} else if v == "" {