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Merge pull request #4201 from jianzhiyao/frt/proposal_4105

WIP:supports for proposal 4105
This commit is contained in:
Ming Deng 2020-09-01 22:05:15 +08:00 committed by GitHub
commit 23792401b5
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GPG Key ID: 4AEE18F83AFDEB23
4 changed files with 477 additions and 467 deletions

View File

@ -99,13 +99,17 @@ func (d *commandSyncDb) Parse(args []string) {
// Run orm line command. // Run orm line command.
func (d *commandSyncDb) Run() error { func (d *commandSyncDb) Run() error {
var drops []string var drops []string
var err error
if d.force { if d.force {
drops = getDbDropSQL(d.al) drops, err = modelCache.getDbDropSQL(d.al)
if err != nil {
return err
}
} }
db := d.al.DB db := d.al.DB
if d.force { if d.force && len(drops) > 0 {
for i, mi := range modelCache.allOrdered() { for i, mi := range modelCache.allOrdered() {
query := drops[i] query := drops[i]
if !d.noInfo { if !d.noInfo {
@ -124,7 +128,10 @@ func (d *commandSyncDb) Run() error {
} }
} }
sqls, indexes := getDbCreateSQL(d.al) createQueries, indexes, err := modelCache.getDbCreateSQL(d.al)
if err != nil {
return err
}
tables, err := d.al.DbBaser.GetTables(db) tables, err := d.al.DbBaser.GetTables(db)
if err != nil { if err != nil {
@ -201,7 +208,7 @@ func (d *commandSyncDb) Run() error {
fmt.Printf("create table `%s` \n", mi.table) fmt.Printf("create table `%s` \n", mi.table)
} }
queries := []string{sqls[i]} queries := []string{createQueries[i]}
for _, idx := range indexes[mi.table] { for _, idx := range indexes[mi.table] {
queries = append(queries, idx.SQL) queries = append(queries, idx.SQL)
} }
@ -245,10 +252,13 @@ func (d *commandSQLAll) Parse(args []string) {
// Run orm line command. // Run orm line command.
func (d *commandSQLAll) Run() error { func (d *commandSQLAll) Run() error {
sqls, indexes := getDbCreateSQL(d.al) createQueries, indexes, err := modelCache.getDbCreateSQL(d.al)
if err != nil {
return err
}
var all []string var all []string
for i, mi := range modelCache.allOrdered() { for i, mi := range modelCache.allOrdered() {
queries := []string{sqls[i]} queries := []string{createQueries[i]}
for _, idx := range indexes[mi.table] { for _, idx := range indexes[mi.table] {
queries = append(queries, idx.SQL) queries = append(queries, idx.SQL)
} }

View File

@ -16,7 +16,6 @@ package orm
import ( import (
"fmt" "fmt"
"os"
"strings" "strings"
) )
@ -26,21 +25,6 @@ type dbIndex struct {
SQL string SQL string
} }
// create database drop sql.
func getDbDropSQL(al *alias) (sqls []string) {
if len(modelCache.cache) == 0 {
fmt.Println("no Model found, need register your model")
os.Exit(2)
}
Q := al.DbBaser.TableQuote()
for _, mi := range modelCache.allOrdered() {
sqls = append(sqls, fmt.Sprintf(`DROP TABLE IF EXISTS %s%s%s`, Q, mi.table, Q))
}
return sqls
}
// get database column type string. // get database column type string.
func getColumnTyp(al *alias, fi *fieldInfo) (col string) { func getColumnTyp(al *alias, fi *fieldInfo) (col string) {
T := al.DbBaser.DbTypes() T := al.DbBaser.DbTypes()
@ -140,146 +124,6 @@ func getColumnAddQuery(al *alias, fi *fieldInfo) string {
) )
} }
// create database creation string.
func getDbCreateSQL(al *alias) (sqls []string, tableIndexes map[string][]dbIndex) {
if len(modelCache.cache) == 0 {
fmt.Println("no Model found, need register your model")
os.Exit(2)
}
Q := al.DbBaser.TableQuote()
T := al.DbBaser.DbTypes()
sep := fmt.Sprintf("%s, %s", Q, Q)
tableIndexes = make(map[string][]dbIndex)
for _, mi := range modelCache.allOrdered() {
sql := fmt.Sprintf("-- %s\n", strings.Repeat("-", 50))
sql += fmt.Sprintf("-- Table Structure for `%s`\n", mi.fullName)
sql += fmt.Sprintf("-- %s\n", strings.Repeat("-", 50))
sql += fmt.Sprintf("CREATE TABLE IF NOT EXISTS %s%s%s (\n", Q, mi.table, Q)
columns := make([]string, 0, len(mi.fields.fieldsDB))
sqlIndexes := [][]string{}
for _, fi := range mi.fields.fieldsDB {
column := fmt.Sprintf(" %s%s%s ", Q, fi.column, Q)
col := getColumnTyp(al, fi)
if fi.auto {
switch al.Driver {
case DRSqlite, DRPostgres:
column += T["auto"]
default:
column += col + " " + T["auto"]
}
} else if fi.pk {
column += col + " " + T["pk"]
} else {
column += col
if !fi.null {
column += " " + "NOT NULL"
}
//if fi.initial.String() != "" {
// column += " DEFAULT " + fi.initial.String()
//}
// Append attribute DEFAULT
column += getColumnDefault(fi)
if fi.unique {
column += " " + "UNIQUE"
}
if fi.index {
sqlIndexes = append(sqlIndexes, []string{fi.column})
}
}
if strings.Contains(column, "%COL%") {
column = strings.Replace(column, "%COL%", fi.column, -1)
}
if fi.description != "" && al.Driver != DRSqlite {
column += " " + fmt.Sprintf("COMMENT '%s'", fi.description)
}
columns = append(columns, column)
}
if mi.model != nil {
allnames := getTableUnique(mi.addrField)
if !mi.manual && len(mi.uniques) > 0 {
allnames = append(allnames, mi.uniques)
}
for _, names := range allnames {
cols := make([]string, 0, len(names))
for _, name := range names {
if fi, ok := mi.fields.GetByAny(name); ok && fi.dbcol {
cols = append(cols, fi.column)
} else {
panic(fmt.Errorf("cannot found column `%s` when parse UNIQUE in `%s.TableUnique`", name, mi.fullName))
}
}
column := fmt.Sprintf(" UNIQUE (%s%s%s)", Q, strings.Join(cols, sep), Q)
columns = append(columns, column)
}
}
sql += strings.Join(columns, ",\n")
sql += "\n)"
if al.Driver == DRMySQL {
var engine string
if mi.model != nil {
engine = getTableEngine(mi.addrField)
}
if engine == "" {
engine = al.Engine
}
sql += " ENGINE=" + engine
}
sql += ";"
sqls = append(sqls, sql)
if mi.model != nil {
for _, names := range getTableIndex(mi.addrField) {
cols := make([]string, 0, len(names))
for _, name := range names {
if fi, ok := mi.fields.GetByAny(name); ok && fi.dbcol {
cols = append(cols, fi.column)
} else {
panic(fmt.Errorf("cannot found column `%s` when parse INDEX in `%s.TableIndex`", name, mi.fullName))
}
}
sqlIndexes = append(sqlIndexes, cols)
}
}
for _, names := range sqlIndexes {
name := mi.table + "_" + strings.Join(names, "_")
cols := strings.Join(names, sep)
sql := fmt.Sprintf("CREATE INDEX %s%s%s ON %s%s%s (%s%s%s);", Q, name, Q, Q, mi.table, Q, Q, cols, Q)
index := dbIndex{}
index.Table = mi.table
index.Name = name
index.SQL = sql
tableIndexes[mi.table] = append(tableIndexes[mi.table], index)
}
}
return
}
// Get string value for the attribute "DEFAULT" for the CREATE, ALTER commands // Get string value for the attribute "DEFAULT" for the CREATE, ALTER commands
func getColumnDefault(fi *fieldInfo) string { func getColumnDefault(fi *fieldInfo) string {
var ( var (

View File

@ -15,7 +15,11 @@
package orm package orm
import ( import (
"errors"
"fmt"
"reflect" "reflect"
"runtime/debug"
"strings"
"sync" "sync"
) )
@ -95,12 +99,464 @@ func (mc *_modelCache) set(table string, mi *modelInfo) *modelInfo {
// clean all model info. // clean all model info.
func (mc *_modelCache) clean() { func (mc *_modelCache) clean() {
mc.Lock()
defer mc.Unlock()
mc.orders = make([]string, 0) mc.orders = make([]string, 0)
mc.cache = make(map[string]*modelInfo) mc.cache = make(map[string]*modelInfo)
mc.cacheByFullName = make(map[string]*modelInfo) mc.cacheByFullName = make(map[string]*modelInfo)
mc.done = false mc.done = false
} }
//bootstrap bootstrap for models
func (mc *_modelCache) bootstrap() {
mc.Lock()
defer mc.Unlock()
if mc.done {
return
}
var (
err error
models map[string]*modelInfo
)
if dataBaseCache.getDefault() == nil {
err = fmt.Errorf("must have one register DataBase alias named `default`")
goto end
}
// set rel and reverse model
// RelManyToMany set the relTable
models = mc.all()
for _, mi := range models {
for _, fi := range mi.fields.columns {
if fi.rel || fi.reverse {
elm := fi.addrValue.Type().Elem()
if fi.fieldType == RelReverseMany || fi.fieldType == RelManyToMany {
elm = elm.Elem()
}
// check the rel or reverse model already register
name := getFullName(elm)
mii, ok := mc.getByFullName(name)
if !ok || mii.pkg != elm.PkgPath() {
err = fmt.Errorf("can not find rel in field `%s`, `%s` may be miss register", fi.fullName, elm.String())
goto end
}
fi.relModelInfo = mii
switch fi.fieldType {
case RelManyToMany:
if fi.relThrough != "" {
if i := strings.LastIndex(fi.relThrough, "."); i != -1 && len(fi.relThrough) > (i+1) {
pn := fi.relThrough[:i]
rmi, ok := mc.getByFullName(fi.relThrough)
if !ok || pn != rmi.pkg {
err = fmt.Errorf("field `%s` wrong rel_through value `%s` cannot find table", fi.fullName, fi.relThrough)
goto end
}
fi.relThroughModelInfo = rmi
fi.relTable = rmi.table
} else {
err = fmt.Errorf("field `%s` wrong rel_through value `%s`", fi.fullName, fi.relThrough)
goto end
}
} else {
i := newM2MModelInfo(mi, mii)
if fi.relTable != "" {
i.table = fi.relTable
}
if v := mc.set(i.table, i); v != nil {
err = fmt.Errorf("the rel table name `%s` already registered, cannot be use, please change one", fi.relTable)
goto end
}
fi.relTable = i.table
fi.relThroughModelInfo = i
}
fi.relThroughModelInfo.isThrough = true
}
}
}
}
// check the rel filed while the relModelInfo also has filed point to current model
// if not exist, add a new field to the relModelInfo
models = mc.all()
for _, mi := range models {
for _, fi := range mi.fields.fieldsRel {
switch fi.fieldType {
case RelForeignKey, RelOneToOne, RelManyToMany:
inModel := false
for _, ffi := range fi.relModelInfo.fields.fieldsReverse {
if ffi.relModelInfo == mi {
inModel = true
break
}
}
if !inModel {
rmi := fi.relModelInfo
ffi := new(fieldInfo)
ffi.name = mi.name
ffi.column = ffi.name
ffi.fullName = rmi.fullName + "." + ffi.name
ffi.reverse = true
ffi.relModelInfo = mi
ffi.mi = rmi
if fi.fieldType == RelOneToOne {
ffi.fieldType = RelReverseOne
} else {
ffi.fieldType = RelReverseMany
}
if !rmi.fields.Add(ffi) {
added := false
for cnt := 0; cnt < 5; cnt++ {
ffi.name = fmt.Sprintf("%s%d", mi.name, cnt)
ffi.column = ffi.name
ffi.fullName = rmi.fullName + "." + ffi.name
if added = rmi.fields.Add(ffi); added {
break
}
}
if !added {
panic(fmt.Errorf("cannot generate auto reverse field info `%s` to `%s`", fi.fullName, ffi.fullName))
}
}
}
}
}
}
models = mc.all()
for _, mi := range models {
for _, fi := range mi.fields.fieldsRel {
switch fi.fieldType {
case RelManyToMany:
for _, ffi := range fi.relThroughModelInfo.fields.fieldsRel {
switch ffi.fieldType {
case RelOneToOne, RelForeignKey:
if ffi.relModelInfo == fi.relModelInfo {
fi.reverseFieldInfoTwo = ffi
}
if ffi.relModelInfo == mi {
fi.reverseField = ffi.name
fi.reverseFieldInfo = ffi
}
}
}
if fi.reverseFieldInfoTwo == nil {
err = fmt.Errorf("can not find m2m field for m2m model `%s`, ensure your m2m model defined correct",
fi.relThroughModelInfo.fullName)
goto end
}
}
}
}
models = mc.all()
for _, mi := range models {
for _, fi := range mi.fields.fieldsReverse {
switch fi.fieldType {
case RelReverseOne:
found := false
mForA:
for _, ffi := range fi.relModelInfo.fields.fieldsByType[RelOneToOne] {
if ffi.relModelInfo == mi {
found = true
fi.reverseField = ffi.name
fi.reverseFieldInfo = ffi
ffi.reverseField = fi.name
ffi.reverseFieldInfo = fi
break mForA
}
}
if !found {
err = fmt.Errorf("reverse field `%s` not found in model `%s`", fi.fullName, fi.relModelInfo.fullName)
goto end
}
case RelReverseMany:
found := false
mForB:
for _, ffi := range fi.relModelInfo.fields.fieldsByType[RelForeignKey] {
if ffi.relModelInfo == mi {
found = true
fi.reverseField = ffi.name
fi.reverseFieldInfo = ffi
ffi.reverseField = fi.name
ffi.reverseFieldInfo = fi
break mForB
}
}
if !found {
mForC:
for _, ffi := range fi.relModelInfo.fields.fieldsByType[RelManyToMany] {
conditions := fi.relThrough != "" && fi.relThrough == ffi.relThrough ||
fi.relTable != "" && fi.relTable == ffi.relTable ||
fi.relThrough == "" && fi.relTable == ""
if ffi.relModelInfo == mi && conditions {
found = true
fi.reverseField = ffi.reverseFieldInfoTwo.name
fi.reverseFieldInfo = ffi.reverseFieldInfoTwo
fi.relThroughModelInfo = ffi.relThroughModelInfo
fi.reverseFieldInfoTwo = ffi.reverseFieldInfo
fi.reverseFieldInfoM2M = ffi
ffi.reverseFieldInfoM2M = fi
break mForC
}
}
}
if !found {
err = fmt.Errorf("reverse field for `%s` not found in model `%s`", fi.fullName, fi.relModelInfo.fullName)
goto end
}
}
}
}
end:
if err != nil {
fmt.Println(err)
debug.PrintStack()
}
modelCache.done = true
return
}
// register register models to model cache
func (mc *_modelCache) register(prefixOrSuffixStr string, prefixOrSuffix bool, models ...interface{}) (err error) {
if mc.done {
err = fmt.Errorf("register must be run before BootStrap")
return
}
for _, model := range models {
val := reflect.ValueOf(model)
typ := reflect.Indirect(val).Type()
if val.Kind() != reflect.Ptr {
err = fmt.Errorf("<orm.RegisterModel> cannot use non-ptr model struct `%s`", getFullName(typ))
return
}
// For this case:
// u := &User{}
// registerModel(&u)
if typ.Kind() == reflect.Ptr {
err = fmt.Errorf("<orm.RegisterModel> only allow ptr model struct, it looks you use two reference to the struct `%s`", typ)
return
}
table := getTableName(val)
if prefixOrSuffixStr != "" {
if prefixOrSuffix {
table = prefixOrSuffixStr + table
} else {
table = table + prefixOrSuffixStr
}
}
// models's fullname is pkgpath + struct name
name := getFullName(typ)
if _, ok := mc.getByFullName(name); ok {
err = fmt.Errorf("<orm.RegisterModel> model `%s` repeat register, must be unique\n", name)
return
}
if _, ok := mc.get(table); ok {
err = fmt.Errorf("<orm.RegisterModel> table name `%s` repeat register, must be unique\n", table)
return
}
mi := newModelInfo(val)
if mi.fields.pk == nil {
outFor:
for _, fi := range mi.fields.fieldsDB {
if strings.ToLower(fi.name) == "id" {
switch fi.addrValue.Elem().Kind() {
case reflect.Int, reflect.Int32, reflect.Int64, reflect.Uint, reflect.Uint32, reflect.Uint64:
fi.auto = true
fi.pk = true
mi.fields.pk = fi
break outFor
}
}
}
if mi.fields.pk == nil {
err = fmt.Errorf("<orm.RegisterModel> `%s` needs a primary key field, default is to use 'id' if not set\n", name)
return
}
}
mi.table = table
mi.pkg = typ.PkgPath()
mi.model = model
mi.manual = true
mc.set(table, mi)
}
return
}
//getDbDropSQL get database scheme drop sql queries
func (mc *_modelCache) getDbDropSQL(al *alias) (queries []string, err error) {
if len(modelCache.cache) == 0 {
err = errors.New("no Model found, need register your model")
return
}
Q := al.DbBaser.TableQuote()
for _, mi := range modelCache.allOrdered() {
queries = append(queries, fmt.Sprintf(`DROP TABLE IF EXISTS %s%s%s`, Q, mi.table, Q))
}
return queries,nil
}
//getDbCreateSQL get database scheme creation sql queries
func (mc *_modelCache) getDbCreateSQL(al *alias) (queries []string, tableIndexes map[string][]dbIndex, err error) {
if len(modelCache.cache) == 0 {
err = errors.New("no Model found, need register your model")
return
}
Q := al.DbBaser.TableQuote()
T := al.DbBaser.DbTypes()
sep := fmt.Sprintf("%s, %s", Q, Q)
tableIndexes = make(map[string][]dbIndex)
for _, mi := range modelCache.allOrdered() {
sql := fmt.Sprintf("-- %s\n", strings.Repeat("-", 50))
sql += fmt.Sprintf("-- Table Structure for `%s`\n", mi.fullName)
sql += fmt.Sprintf("-- %s\n", strings.Repeat("-", 50))
sql += fmt.Sprintf("CREATE TABLE IF NOT EXISTS %s%s%s (\n", Q, mi.table, Q)
columns := make([]string, 0, len(mi.fields.fieldsDB))
sqlIndexes := [][]string{}
for _, fi := range mi.fields.fieldsDB {
column := fmt.Sprintf(" %s%s%s ", Q, fi.column, Q)
col := getColumnTyp(al, fi)
if fi.auto {
switch al.Driver {
case DRSqlite, DRPostgres:
column += T["auto"]
default:
column += col + " " + T["auto"]
}
} else if fi.pk {
column += col + " " + T["pk"]
} else {
column += col
if !fi.null {
column += " " + "NOT NULL"
}
//if fi.initial.String() != "" {
// column += " DEFAULT " + fi.initial.String()
//}
// Append attribute DEFAULT
column += getColumnDefault(fi)
if fi.unique {
column += " " + "UNIQUE"
}
if fi.index {
sqlIndexes = append(sqlIndexes, []string{fi.column})
}
}
if strings.Contains(column, "%COL%") {
column = strings.Replace(column, "%COL%", fi.column, -1)
}
if fi.description != "" && al.Driver != DRSqlite {
column += " " + fmt.Sprintf("COMMENT '%s'", fi.description)
}
columns = append(columns, column)
}
if mi.model != nil {
allnames := getTableUnique(mi.addrField)
if !mi.manual && len(mi.uniques) > 0 {
allnames = append(allnames, mi.uniques)
}
for _, names := range allnames {
cols := make([]string, 0, len(names))
for _, name := range names {
if fi, ok := mi.fields.GetByAny(name); ok && fi.dbcol {
cols = append(cols, fi.column)
} else {
panic(fmt.Errorf("cannot found column `%s` when parse UNIQUE in `%s.TableUnique`", name, mi.fullName))
}
}
column := fmt.Sprintf(" UNIQUE (%s%s%s)", Q, strings.Join(cols, sep), Q)
columns = append(columns, column)
}
}
sql += strings.Join(columns, ",\n")
sql += "\n)"
if al.Driver == DRMySQL {
var engine string
if mi.model != nil {
engine = getTableEngine(mi.addrField)
}
if engine == "" {
engine = al.Engine
}
sql += " ENGINE=" + engine
}
sql += ";"
queries = append(queries, sql)
if mi.model != nil {
for _, names := range getTableIndex(mi.addrField) {
cols := make([]string, 0, len(names))
for _, name := range names {
if fi, ok := mi.fields.GetByAny(name); ok && fi.dbcol {
cols = append(cols, fi.column)
} else {
panic(fmt.Errorf("cannot found column `%s` when parse INDEX in `%s.TableIndex`", name, mi.fullName))
}
}
sqlIndexes = append(sqlIndexes, cols)
}
}
for _, names := range sqlIndexes {
name := mi.table + "_" + strings.Join(names, "_")
cols := strings.Join(names, sep)
sql := fmt.Sprintf("CREATE INDEX %s%s%s ON %s%s%s (%s%s%s);", Q, name, Q, Q, mi.table, Q, Q, cols, Q)
index := dbIndex{}
index.Table = mi.table
index.Name = name
index.SQL = sql
tableIndexes[mi.table] = append(tableIndexes[mi.table], index)
}
}
return
}
// ResetModelCache Clean model cache. Then you can re-RegisterModel. // ResetModelCache Clean model cache. Then you can re-RegisterModel.
// Common use this api for test case. // Common use this api for test case.
func ResetModelCache() { func ResetModelCache() {

View File

@ -16,294 +16,8 @@ package orm
import ( import (
"fmt" "fmt"
"os"
"reflect"
"runtime/debug"
"strings"
) )
// register models.
// PrefixOrSuffix means table name prefix or suffix.
// isPrefix whether the prefix is prefix or suffix
func registerModel(PrefixOrSuffix string, model interface{}, isPrefix bool) {
val := reflect.ValueOf(model)
typ := reflect.Indirect(val).Type()
if val.Kind() != reflect.Ptr {
panic(fmt.Errorf("<orm.RegisterModel> cannot use non-ptr model struct `%s`", getFullName(typ)))
}
// For this case:
// u := &User{}
// registerModel(&u)
if typ.Kind() == reflect.Ptr {
panic(fmt.Errorf("<orm.RegisterModel> only allow ptr model struct, it looks you use two reference to the struct `%s`", typ))
}
table := getTableName(val)
if PrefixOrSuffix != "" {
if isPrefix {
table = PrefixOrSuffix + table
} else {
table = table + PrefixOrSuffix
}
}
// models's fullname is pkgpath + struct name
name := getFullName(typ)
if _, ok := modelCache.getByFullName(name); ok {
fmt.Printf("<orm.RegisterModel> model `%s` repeat register, must be unique\n", name)
os.Exit(2)
}
if _, ok := modelCache.get(table); ok {
fmt.Printf("<orm.RegisterModel> table name `%s` repeat register, must be unique\n", table)
os.Exit(2)
}
mi := newModelInfo(val)
if mi.fields.pk == nil {
outFor:
for _, fi := range mi.fields.fieldsDB {
if strings.ToLower(fi.name) == "id" {
switch fi.addrValue.Elem().Kind() {
case reflect.Int, reflect.Int32, reflect.Int64, reflect.Uint, reflect.Uint32, reflect.Uint64:
fi.auto = true
fi.pk = true
mi.fields.pk = fi
break outFor
}
}
}
if mi.fields.pk == nil {
fmt.Printf("<orm.RegisterModel> `%s` needs a primary key field, default is to use 'id' if not set\n", name)
os.Exit(2)
}
}
mi.table = table
mi.pkg = typ.PkgPath()
mi.model = model
mi.manual = true
modelCache.set(table, mi)
}
// bootstrap models
func bootStrap() {
if modelCache.done {
return
}
var (
err error
models map[string]*modelInfo
)
if dataBaseCache.getDefault() == nil {
err = fmt.Errorf("must have one register DataBase alias named `default`")
goto end
}
// set rel and reverse model
// RelManyToMany set the relTable
models = modelCache.all()
for _, mi := range models {
for _, fi := range mi.fields.columns {
if fi.rel || fi.reverse {
elm := fi.addrValue.Type().Elem()
if fi.fieldType == RelReverseMany || fi.fieldType == RelManyToMany {
elm = elm.Elem()
}
// check the rel or reverse model already register
name := getFullName(elm)
mii, ok := modelCache.getByFullName(name)
if !ok || mii.pkg != elm.PkgPath() {
err = fmt.Errorf("can not find rel in field `%s`, `%s` may be miss register", fi.fullName, elm.String())
goto end
}
fi.relModelInfo = mii
switch fi.fieldType {
case RelManyToMany:
if fi.relThrough != "" {
if i := strings.LastIndex(fi.relThrough, "."); i != -1 && len(fi.relThrough) > (i+1) {
pn := fi.relThrough[:i]
rmi, ok := modelCache.getByFullName(fi.relThrough)
if !ok || pn != rmi.pkg {
err = fmt.Errorf("field `%s` wrong rel_through value `%s` cannot find table", fi.fullName, fi.relThrough)
goto end
}
fi.relThroughModelInfo = rmi
fi.relTable = rmi.table
} else {
err = fmt.Errorf("field `%s` wrong rel_through value `%s`", fi.fullName, fi.relThrough)
goto end
}
} else {
i := newM2MModelInfo(mi, mii)
if fi.relTable != "" {
i.table = fi.relTable
}
if v := modelCache.set(i.table, i); v != nil {
err = fmt.Errorf("the rel table name `%s` already registered, cannot be use, please change one", fi.relTable)
goto end
}
fi.relTable = i.table
fi.relThroughModelInfo = i
}
fi.relThroughModelInfo.isThrough = true
}
}
}
}
// check the rel filed while the relModelInfo also has filed point to current model
// if not exist, add a new field to the relModelInfo
models = modelCache.all()
for _, mi := range models {
for _, fi := range mi.fields.fieldsRel {
switch fi.fieldType {
case RelForeignKey, RelOneToOne, RelManyToMany:
inModel := false
for _, ffi := range fi.relModelInfo.fields.fieldsReverse {
if ffi.relModelInfo == mi {
inModel = true
break
}
}
if !inModel {
rmi := fi.relModelInfo
ffi := new(fieldInfo)
ffi.name = mi.name
ffi.column = ffi.name
ffi.fullName = rmi.fullName + "." + ffi.name
ffi.reverse = true
ffi.relModelInfo = mi
ffi.mi = rmi
if fi.fieldType == RelOneToOne {
ffi.fieldType = RelReverseOne
} else {
ffi.fieldType = RelReverseMany
}
if !rmi.fields.Add(ffi) {
added := false
for cnt := 0; cnt < 5; cnt++ {
ffi.name = fmt.Sprintf("%s%d", mi.name, cnt)
ffi.column = ffi.name
ffi.fullName = rmi.fullName + "." + ffi.name
if added = rmi.fields.Add(ffi); added {
break
}
}
if !added {
panic(fmt.Errorf("cannot generate auto reverse field info `%s` to `%s`", fi.fullName, ffi.fullName))
}
}
}
}
}
}
models = modelCache.all()
for _, mi := range models {
for _, fi := range mi.fields.fieldsRel {
switch fi.fieldType {
case RelManyToMany:
for _, ffi := range fi.relThroughModelInfo.fields.fieldsRel {
switch ffi.fieldType {
case RelOneToOne, RelForeignKey:
if ffi.relModelInfo == fi.relModelInfo {
fi.reverseFieldInfoTwo = ffi
}
if ffi.relModelInfo == mi {
fi.reverseField = ffi.name
fi.reverseFieldInfo = ffi
}
}
}
if fi.reverseFieldInfoTwo == nil {
err = fmt.Errorf("can not find m2m field for m2m model `%s`, ensure your m2m model defined correct",
fi.relThroughModelInfo.fullName)
goto end
}
}
}
}
models = modelCache.all()
for _, mi := range models {
for _, fi := range mi.fields.fieldsReverse {
switch fi.fieldType {
case RelReverseOne:
found := false
mForA:
for _, ffi := range fi.relModelInfo.fields.fieldsByType[RelOneToOne] {
if ffi.relModelInfo == mi {
found = true
fi.reverseField = ffi.name
fi.reverseFieldInfo = ffi
ffi.reverseField = fi.name
ffi.reverseFieldInfo = fi
break mForA
}
}
if !found {
err = fmt.Errorf("reverse field `%s` not found in model `%s`", fi.fullName, fi.relModelInfo.fullName)
goto end
}
case RelReverseMany:
found := false
mForB:
for _, ffi := range fi.relModelInfo.fields.fieldsByType[RelForeignKey] {
if ffi.relModelInfo == mi {
found = true
fi.reverseField = ffi.name
fi.reverseFieldInfo = ffi
ffi.reverseField = fi.name
ffi.reverseFieldInfo = fi
break mForB
}
}
if !found {
mForC:
for _, ffi := range fi.relModelInfo.fields.fieldsByType[RelManyToMany] {
conditions := fi.relThrough != "" && fi.relThrough == ffi.relThrough ||
fi.relTable != "" && fi.relTable == ffi.relTable ||
fi.relThrough == "" && fi.relTable == ""
if ffi.relModelInfo == mi && conditions {
found = true
fi.reverseField = ffi.reverseFieldInfoTwo.name
fi.reverseFieldInfo = ffi.reverseFieldInfoTwo
fi.relThroughModelInfo = ffi.relThroughModelInfo
fi.reverseFieldInfoTwo = ffi.reverseFieldInfo
fi.reverseFieldInfoM2M = ffi
ffi.reverseFieldInfoM2M = fi
break mForC
}
}
}
if !found {
err = fmt.Errorf("reverse field for `%s` not found in model `%s`", fi.fullName, fi.relModelInfo.fullName)
goto end
}
}
}
}
end:
if err != nil {
fmt.Println(err)
debug.PrintStack()
os.Exit(2)
}
}
// RegisterModel register models // RegisterModel register models
func RegisterModel(models ...interface{}) { func RegisterModel(models ...interface{}) {
if modelCache.done { if modelCache.done {
@ -314,34 +28,20 @@ func RegisterModel(models ...interface{}) {
// RegisterModelWithPrefix register models with a prefix // RegisterModelWithPrefix register models with a prefix
func RegisterModelWithPrefix(prefix string, models ...interface{}) { func RegisterModelWithPrefix(prefix string, models ...interface{}) {
if modelCache.done { if err := modelCache.register(prefix, true, models...); err != nil {
panic(fmt.Errorf("RegisterModelWithPrefix must be run before BootStrap")) panic(err)
}
for _, model := range models {
registerModel(prefix, model, true)
} }
} }
// RegisterModelWithSuffix register models with a suffix // RegisterModelWithSuffix register models with a suffix
func RegisterModelWithSuffix(suffix string, models ...interface{}) { func RegisterModelWithSuffix(suffix string, models ...interface{}) {
if modelCache.done { if err := modelCache.register(suffix, false, models...); err != nil {
panic(fmt.Errorf("RegisterModelWithSuffix must be run before BootStrap")) panic(err)
}
for _, model := range models {
registerModel(suffix, model, false)
} }
} }
// BootStrap bootstrap models. // BootStrap bootstrap models.
// make all model parsed and can not add more models // make all model parsed and can not add more models
func BootStrap() { func BootStrap() {
modelCache.Lock() modelCache.bootstrap()
defer modelCache.Unlock()
if modelCache.done {
return
}
bootStrap()
modelCache.done = true
} }