add test and remove unused warn log

engine_cond.go

@@ -9,6 +9,7 @@ import (
 	"encoding/json"
 	"fmt"
 	"reflect"
+	"strings"
 	"time"
 
 	"github.com/go-xorm/builder"
@@ -51,7 +52,9 @@ func (engine *Engine) buildConds(table *core.Table, bean interface{},
 
 		fieldValuePtr, err := col.ValueOf(bean)
 		if err != nil {
-			engine.logger.Error(err)
+			if !strings.Contains(err.Error(), "is not valid") {
+				engine.logger.Warn(err)
+			}
 			continue
 		}
 

error.go

@@ -6,6 +6,7 @@ package xorm
 
 import (
 	"errors"
+	"fmt"
 )
 
 var (
@@ -29,4 +30,16 @@ var (
 	ErrNotImplemented = errors.New("Not implemented")
 	// ErrConditionType condition type unsupported
 	ErrConditionType = errors.New("Unsupported conditon type")
+	// ErrColumnIsNotExist columns is not exist
+	ErrFieldIsNotExist = errors.New("Field is not exist")
 )
+
+// ErrFieldIsNotValid is not valid
+type ErrFieldIsNotValid struct {
+	FieldName string
+	TableName string
+}
+
+func (e ErrFieldIsNotValid) Error() string {
+	return fmt.Sprintf("field %s is not valid on table %s", e.FieldName, e.TableName)
+}

interface.go

@@ -42,6 +42,7 @@ type Interface interface {
 	IsTableExist(beanOrTableName interface{}) (bool, error)
 	Iterate(interface{}, IterFunc) error
 	Limit(int, ...int) *Session
+	MustCols(columns ...string) *Session
 	NoAutoCondition(...bool) *Session
 	NotIn(string, ...interface{}) *Session
 	Join(joinOperator string, tablename interface{}, condition string, args ...interface{}) *Session

session.go

@@ -284,24 +284,22 @@ func (session *Session) doPrepare(db *core.DB, sqlStr string) (stmt *core.Stmt,
 	return
 }
 
-func (session *Session) getField(dataStruct *reflect.Value, key string, table *core.Table, idx int) *reflect.Value {
+func (session *Session) getField(dataStruct *reflect.Value, key string, table *core.Table, idx int) (*reflect.Value, error) {
 	var col *core.Column
 	if col = table.GetColumnIdx(key, idx); col == nil {
-		//session.engine.logger.Warnf("table %v has no column %v. %v", table.Name, key, table.ColumnsSeq())
-		return nil
+		return nil, ErrFieldIsNotExist
 	}
 
 	fieldValue, err := col.ValueOfV(dataStruct)
 	if err != nil {
-		session.engine.logger.Error(err)
-		return nil
+		return nil, err
 	}
 
 	if !fieldValue.IsValid() || !fieldValue.CanSet() {
-		session.engine.logger.Warnf("table %v's column %v is not valid or cannot set", table.Name, key)
-		return nil
+		return nil, ErrFieldIsNotValid{key, table.Name}
 	}
-	return fieldValue
+
+	return fieldValue, nil
 }
 
 // Cell cell is a result of one column field
@@ -413,409 +411,417 @@ func (session *Session) slice2Bean(scanResults []interface{}, fields []string, b
 		}
 		tempMap[lKey] = idx
 
-		if fieldValue := session.getField(dataStruct, key, table, idx); fieldValue != nil {
-			rawValue := reflect.Indirect(reflect.ValueOf(scanResults[ii]))
-
-			// if row is null then ignore
-			if rawValue.Interface() == nil {
-				continue
+		fieldValue, err := session.getField(dataStruct, key, table, idx)
+		if err != nil {
+			if !strings.Contains(err.Error(), "is not valid") {
+				session.engine.logger.Warn(err)
 			}
+			continue
+		}
+		if fieldValue == nil {
+			continue
+		}
+		rawValue := reflect.Indirect(reflect.ValueOf(scanResults[ii]))
 
-			if fieldValue.CanAddr() {
-				if structConvert, ok := fieldValue.Addr().Interface().(core.Conversion); ok {
-					if data, err := value2Bytes(&rawValue); err == nil {
-						if err := structConvert.FromDB(data); err != nil {
-							return nil, err
-						}
-					} else {
-						return nil, err
-					}
-					continue
-				}
-			}
+		// if row is null then ignore
+		if rawValue.Interface() == nil {
+			continue
+		}
 
-			if _, ok := fieldValue.Interface().(core.Conversion); ok {
+		if fieldValue.CanAddr() {
+			if structConvert, ok := fieldValue.Addr().Interface().(core.Conversion); ok {
 				if data, err := value2Bytes(&rawValue); err == nil {
-					if fieldValue.Kind() == reflect.Ptr && fieldValue.IsNil() {
-						fieldValue.Set(reflect.New(fieldValue.Type().Elem()))
+					if err := structConvert.FromDB(data); err != nil {
+						return nil, err
 					}
-					fieldValue.Interface().(core.Conversion).FromDB(data)
 				} else {
 					return nil, err
 				}
 				continue
 			}
+		}
 
-			rawValueType := reflect.TypeOf(rawValue.Interface())
-			vv := reflect.ValueOf(rawValue.Interface())
-			col := table.GetColumnIdx(key, idx)
-			if col.IsPrimaryKey {
-				pk = append(pk, rawValue.Interface())
+		if _, ok := fieldValue.Interface().(core.Conversion); ok {
+			if data, err := value2Bytes(&rawValue); err == nil {
+				if fieldValue.Kind() == reflect.Ptr && fieldValue.IsNil() {
+					fieldValue.Set(reflect.New(fieldValue.Type().Elem()))
+				}
+				fieldValue.Interface().(core.Conversion).FromDB(data)
+			} else {
+				return nil, err
 			}
-			fieldType := fieldValue.Type()
-			hasAssigned := false
+			continue
+		}
 
-			if col.SQLType.IsJson() {
-				var bs []byte
-				if rawValueType.Kind() == reflect.String {
-					bs = []byte(vv.String())
-				} else if rawValueType.ConvertibleTo(core.BytesType) {
-					bs = vv.Bytes()
-				} else {
-					return nil, fmt.Errorf("unsupported database data type: %s %v", key, rawValueType.Kind())
-				}
+		rawValueType := reflect.TypeOf(rawValue.Interface())
+		vv := reflect.ValueOf(rawValue.Interface())
+		col := table.GetColumnIdx(key, idx)
+		if col.IsPrimaryKey {
+			pk = append(pk, rawValue.Interface())
+		}
+		fieldType := fieldValue.Type()
+		hasAssigned := false
+
+		if col.SQLType.IsJson() {
+			var bs []byte
+			if rawValueType.Kind() == reflect.String {
+				bs = []byte(vv.String())
+			} else if rawValueType.ConvertibleTo(core.BytesType) {
+				bs = vv.Bytes()
+			} else {
+				return nil, fmt.Errorf("unsupported database data type: %s %v", key, rawValueType.Kind())
+			}
 
-				hasAssigned = true
+			hasAssigned = true
 
-				if len(bs) > 0 {
-					if fieldType.Kind() == reflect.String {
-						fieldValue.SetString(string(bs))
-						continue
+			if len(bs) > 0 {
+				if fieldType.Kind() == reflect.String {
+					fieldValue.SetString(string(bs))
+					continue
+				}
+				if fieldValue.CanAddr() {
+					err := json.Unmarshal(bs, fieldValue.Addr().Interface())
+					if err != nil {
+						return nil, err
 					}
-					if fieldValue.CanAddr() {
-						err := json.Unmarshal(bs, fieldValue.Addr().Interface())
-						if err != nil {
-							return nil, err
-						}
-					} else {
-						x := reflect.New(fieldType)
-						err := json.Unmarshal(bs, x.Interface())
-						if err != nil {
-							return nil, err
-						}
-						fieldValue.Set(x.Elem())
+				} else {
+					x := reflect.New(fieldType)
+					err := json.Unmarshal(bs, x.Interface())
+					if err != nil {
+						return nil, err
 					}
+					fieldValue.Set(x.Elem())
 				}
-
-				continue
 			}
 
-			switch fieldType.Kind() {
-			case reflect.Complex64, reflect.Complex128:
-				// TODO: reimplement this
-				var bs []byte
-				if rawValueType.Kind() == reflect.String {
-					bs = []byte(vv.String())
-				} else if rawValueType.ConvertibleTo(core.BytesType) {
-					bs = vv.Bytes()
-				}
+			continue
+		}
 
-				hasAssigned = true
-				if len(bs) > 0 {
-					if fieldValue.CanAddr() {
-						err := json.Unmarshal(bs, fieldValue.Addr().Interface())
-						if err != nil {
-							return nil, err
-						}
-					} else {
-						x := reflect.New(fieldType)
-						err := json.Unmarshal(bs, x.Interface())
-						if err != nil {
-							return nil, err
-						}
-						fieldValue.Set(x.Elem())
+		switch fieldType.Kind() {
+		case reflect.Complex64, reflect.Complex128:
+			// TODO: reimplement this
+			var bs []byte
+			if rawValueType.Kind() == reflect.String {
+				bs = []byte(vv.String())
+			} else if rawValueType.ConvertibleTo(core.BytesType) {
+				bs = vv.Bytes()
+			}
+
+			hasAssigned = true
+			if len(bs) > 0 {
+				if fieldValue.CanAddr() {
+					err := json.Unmarshal(bs, fieldValue.Addr().Interface())
+					if err != nil {
+						return nil, err
+					}
+				} else {
+					x := reflect.New(fieldType)
+					err := json.Unmarshal(bs, x.Interface())
+					if err != nil {
+						return nil, err
 					}
+					fieldValue.Set(x.Elem())
 				}
+			}
+		case reflect.Slice, reflect.Array:
+			switch rawValueType.Kind() {
 			case reflect.Slice, reflect.Array:
-				switch rawValueType.Kind() {
-				case reflect.Slice, reflect.Array:
-					switch rawValueType.Elem().Kind() {
-					case reflect.Uint8:
-						if fieldType.Elem().Kind() == reflect.Uint8 {
-							hasAssigned = true
-							if col.SQLType.IsText() {
-								x := reflect.New(fieldType)
-								err := json.Unmarshal(vv.Bytes(), x.Interface())
-								if err != nil {
-									return nil, err
+				switch rawValueType.Elem().Kind() {
+				case reflect.Uint8:
+					if fieldType.Elem().Kind() == reflect.Uint8 {
+						hasAssigned = true
+						if col.SQLType.IsText() {
+							x := reflect.New(fieldType)
+							err := json.Unmarshal(vv.Bytes(), x.Interface())
+							if err != nil {
+								return nil, err
+							}
+							fieldValue.Set(x.Elem())
+						} else {
+							if fieldValue.Len() > 0 {
+								for i := 0; i < fieldValue.Len(); i++ {
+									if i < vv.Len() {
+										fieldValue.Index(i).Set(vv.Index(i))
+									}
 								}
-								fieldValue.Set(x.Elem())
 							} else {
-								if fieldValue.Len() > 0 {
-									for i := 0; i < fieldValue.Len(); i++ {
-										if i < vv.Len() {
-											fieldValue.Index(i).Set(vv.Index(i))
-										}
-									}
-								} else {
-									for i := 0; i < vv.Len(); i++ {
-										fieldValue.Set(reflect.Append(*fieldValue, vv.Index(i)))
-									}
+								for i := 0; i < vv.Len(); i++ {
+									fieldValue.Set(reflect.Append(*fieldValue, vv.Index(i)))
 								}
 							}
 						}
 					}
 				}
-			case reflect.String:
-				if rawValueType.Kind() == reflect.String {
-					hasAssigned = true
-					fieldValue.SetString(vv.String())
-				}
-			case reflect.Bool:
-				if rawValueType.Kind() == reflect.Bool {
-					hasAssigned = true
-					fieldValue.SetBool(vv.Bool())
-				}
+			}
+		case reflect.String:
+			if rawValueType.Kind() == reflect.String {
+				hasAssigned = true
+				fieldValue.SetString(vv.String())
+			}
+		case reflect.Bool:
+			if rawValueType.Kind() == reflect.Bool {
+				hasAssigned = true
+				fieldValue.SetBool(vv.Bool())
+			}
+		case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
+			switch rawValueType.Kind() {
 			case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
-				switch rawValueType.Kind() {
-				case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
-					hasAssigned = true
-					fieldValue.SetInt(vv.Int())
-				}
+				hasAssigned = true
+				fieldValue.SetInt(vv.Int())
+			}
+		case reflect.Float32, reflect.Float64:
+			switch rawValueType.Kind() {
 			case reflect.Float32, reflect.Float64:
-				switch rawValueType.Kind() {
-				case reflect.Float32, reflect.Float64:
-					hasAssigned = true
-					fieldValue.SetFloat(vv.Float())
-				}
+				hasAssigned = true
+				fieldValue.SetFloat(vv.Float())
+			}
+		case reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uint:
+			switch rawValueType.Kind() {
 			case reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uint:
-				switch rawValueType.Kind() {
-				case reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uint:
-					hasAssigned = true
-					fieldValue.SetUint(vv.Uint())
-				case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
-					hasAssigned = true
-					fieldValue.SetUint(uint64(vv.Int()))
+				hasAssigned = true
+				fieldValue.SetUint(vv.Uint())
+			case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
+				hasAssigned = true
+				fieldValue.SetUint(uint64(vv.Int()))
+			}
+		case reflect.Struct:
+			if fieldType.ConvertibleTo(core.TimeType) {
+				dbTZ := session.engine.DatabaseTZ
+				if col.TimeZone != nil {
+					dbTZ = col.TimeZone
 				}
-			case reflect.Struct:
-				if fieldType.ConvertibleTo(core.TimeType) {
-					dbTZ := session.engine.DatabaseTZ
-					if col.TimeZone != nil {
-						dbTZ = col.TimeZone
-					}
-
-					if rawValueType == core.TimeType {
-						hasAssigned = true
 
-						t := vv.Convert(core.TimeType).Interface().(time.Time)
-
-						z, _ := t.Zone()
-						// set new location if database don't save timezone or give an incorrect timezone
-						if len(z) == 0 || t.Year() == 0 || t.Location().String() != dbTZ.String() { // !nashtsai! HACK tmp work around for lib/pq doesn't properly time with location
-							session.engine.logger.Debugf("empty zone key[%v] : %v | zone: %v | location: %+v\n", key, t, z, *t.Location())
-							t = time.Date(t.Year(), t.Month(), t.Day(), t.Hour(),
-								t.Minute(), t.Second(), t.Nanosecond(), dbTZ)
-						}
+				if rawValueType == core.TimeType {
+					hasAssigned = true
 
-						t = t.In(session.engine.TZLocation)
-						fieldValue.Set(reflect.ValueOf(t).Convert(fieldType))
-					} else if rawValueType == core.IntType || rawValueType == core.Int64Type ||
-						rawValueType == core.Int32Type {
-						hasAssigned = true
+					t := vv.Convert(core.TimeType).Interface().(time.Time)
 
-						t := time.Unix(vv.Int(), 0).In(session.engine.TZLocation)
-						fieldValue.Set(reflect.ValueOf(t).Convert(fieldType))
-					} else {
-						if d, ok := vv.Interface().([]uint8); ok {
-							hasAssigned = true
-							t, err := session.byte2Time(col, d)
-							if err != nil {
-								session.engine.logger.Error("byte2Time error:", err.Error())
-								hasAssigned = false
-							} else {
-								fieldValue.Set(reflect.ValueOf(t).Convert(fieldType))
-							}
-						} else if d, ok := vv.Interface().(string); ok {
-							hasAssigned = true
-							t, err := session.str2Time(col, d)
-							if err != nil {
-								session.engine.logger.Error("byte2Time error:", err.Error())
-								hasAssigned = false
-							} else {
-								fieldValue.Set(reflect.ValueOf(t).Convert(fieldType))
-							}
-						} else {
-							return nil, fmt.Errorf("rawValueType is %v, value is %v", rawValueType, vv.Interface())
-						}
-					}
-				} else if nulVal, ok := fieldValue.Addr().Interface().(sql.Scanner); ok {
-					// !<winxxp>! 增加支持sql.Scanner接口的结构，如sql.NullString
-					hasAssigned = true
-					if err := nulVal.Scan(vv.Interface()); err != nil {
-						session.engine.logger.Error("sql.Sanner error:", err.Error())
-						hasAssigned = false
-					}
-				} else if col.SQLType.IsJson() {
-					if rawValueType.Kind() == reflect.String {
-						hasAssigned = true
-						x := reflect.New(fieldType)
-						if len([]byte(vv.String())) > 0 {
-							err := json.Unmarshal([]byte(vv.String()), x.Interface())
-							if err != nil {
-								return nil, err
-							}
-							fieldValue.Set(x.Elem())
-						}
-					} else if rawValueType.Kind() == reflect.Slice {
-						hasAssigned = true
-						x := reflect.New(fieldType)
-						if len(vv.Bytes()) > 0 {
-							err := json.Unmarshal(vv.Bytes(), x.Interface())
-							if err != nil {
-								return nil, err
-							}
-							fieldValue.Set(x.Elem())
-						}
-					}
-				} else if session.statement.UseCascade {
-					table, err := session.engine.autoMapType(*fieldValue)
-					if err != nil {
-						return nil, err
+					z, _ := t.Zone()
+					// set new location if database don't save timezone or give an incorrect timezone
+					if len(z) == 0 || t.Year() == 0 || t.Location().String() != dbTZ.String() { // !nashtsai! HACK tmp work around for lib/pq doesn't properly time with location
+						session.engine.logger.Debugf("empty zone key[%v] : %v | zone: %v | location: %+v\n", key, t, z, *t.Location())
+						t = time.Date(t.Year(), t.Month(), t.Day(), t.Hour(),
+							t.Minute(), t.Second(), t.Nanosecond(), dbTZ)
 					}
 
+					t = t.In(session.engine.TZLocation)
+					fieldValue.Set(reflect.ValueOf(t).Convert(fieldType))
+				} else if rawValueType == core.IntType || rawValueType == core.Int64Type ||
+					rawValueType == core.Int32Type {
 					hasAssigned = true
-					if len(table.PrimaryKeys) != 1 {
-						return nil, errors.New("unsupported non or composited primary key cascade")
-					}
-					var pk = make(core.PK, len(table.PrimaryKeys))
-					pk[0], err = asKind(vv, rawValueType)
-					if err != nil {
-						return nil, err
-					}
 
-					if !isPKZero(pk) {
-						// !nashtsai! TODO for hasOne relationship, it's preferred to use join query for eager fetch
-						// however, also need to consider adding a 'lazy' attribute to xorm tag which allow hasOne
-						// property to be fetched lazily
-						structInter := reflect.New(fieldValue.Type())
-						has, err := session.ID(pk).NoCascade().get(structInter.Interface())
+					t := time.Unix(vv.Int(), 0).In(session.engine.TZLocation)
+					fieldValue.Set(reflect.ValueOf(t).Convert(fieldType))
+				} else {
+					if d, ok := vv.Interface().([]uint8); ok {
+						hasAssigned = true
+						t, err := session.byte2Time(col, d)
 						if err != nil {
-							return nil, err
+							session.engine.logger.Error("byte2Time error:", err.Error())
+							hasAssigned = false
+						} else {
+							fieldValue.Set(reflect.ValueOf(t).Convert(fieldType))
 						}
-						if has {
-							fieldValue.Set(structInter.Elem())
+					} else if d, ok := vv.Interface().(string); ok {
+						hasAssigned = true
+						t, err := session.str2Time(col, d)
+						if err != nil {
+							session.engine.logger.Error("byte2Time error:", err.Error())
+							hasAssigned = false
 						} else {
-							return nil, errors.New("cascade obj is not exist")
+							fieldValue.Set(reflect.ValueOf(t).Convert(fieldType))
 						}
+					} else {
+						return nil, fmt.Errorf("rawValueType is %v, value is %v", rawValueType, vv.Interface())
 					}
 				}
-			case reflect.Ptr:
-				// !nashtsai! TODO merge duplicated codes above
-				switch fieldType {
-				// following types case matching ptr's native type, therefore assign ptr directly
-				case core.PtrStringType:
-					if rawValueType.Kind() == reflect.String {
-						x := vv.String()
-						hasAssigned = true
-						fieldValue.Set(reflect.ValueOf(&x))
-					}
-				case core.PtrBoolType:
-					if rawValueType.Kind() == reflect.Bool {
-						x := vv.Bool()
-						hasAssigned = true
-						fieldValue.Set(reflect.ValueOf(&x))
-					}
-				case core.PtrTimeType:
-					if rawValueType == core.PtrTimeType {
-						hasAssigned = true
-						var x = rawValue.Interface().(time.Time)
-						fieldValue.Set(reflect.ValueOf(&x))
-					}
-				case core.PtrFloat64Type:
-					if rawValueType.Kind() == reflect.Float64 {
-						x := vv.Float()
-						hasAssigned = true
-						fieldValue.Set(reflect.ValueOf(&x))
-					}
-				case core.PtrUint64Type:
-					if rawValueType.Kind() == reflect.Int64 {
-						var x = uint64(vv.Int())
-						hasAssigned = true
-						fieldValue.Set(reflect.ValueOf(&x))
-					}
-				case core.PtrInt64Type:
-					if rawValueType.Kind() == reflect.Int64 {
-						x := vv.Int()
-						hasAssigned = true
-						fieldValue.Set(reflect.ValueOf(&x))
-					}
-				case core.PtrFloat32Type:
-					if rawValueType.Kind() == reflect.Float64 {
-						var x = float32(vv.Float())
-						hasAssigned = true
-						fieldValue.Set(reflect.ValueOf(&x))
-					}
-				case core.PtrIntType:
-					if rawValueType.Kind() == reflect.Int64 {
-						var x = int(vv.Int())
-						hasAssigned = true
-						fieldValue.Set(reflect.ValueOf(&x))
-					}
-				case core.PtrInt32Type:
-					if rawValueType.Kind() == reflect.Int64 {
-						var x = int32(vv.Int())
-						hasAssigned = true
-						fieldValue.Set(reflect.ValueOf(&x))
-					}
-				case core.PtrInt8Type:
-					if rawValueType.Kind() == reflect.Int64 {
-						var x = int8(vv.Int())
-						hasAssigned = true
-						fieldValue.Set(reflect.ValueOf(&x))
-					}
-				case core.PtrInt16Type:
-					if rawValueType.Kind() == reflect.Int64 {
-						var x = int16(vv.Int())
-						hasAssigned = true
-						fieldValue.Set(reflect.ValueOf(&x))
-					}
-				case core.PtrUintType:
-					if rawValueType.Kind() == reflect.Int64 {
-						var x = uint(vv.Int())
-						hasAssigned = true
-						fieldValue.Set(reflect.ValueOf(&x))
-					}
-				case core.PtrUint32Type:
-					if rawValueType.Kind() == reflect.Int64 {
-						var x = uint32(vv.Int())
-						hasAssigned = true
-						fieldValue.Set(reflect.ValueOf(&x))
-					}
-				case core.Uint8Type:
-					if rawValueType.Kind() == reflect.Int64 {
-						var x = uint8(vv.Int())
-						hasAssigned = true
-						fieldValue.Set(reflect.ValueOf(&x))
-					}
-				case core.Uint16Type:
-					if rawValueType.Kind() == reflect.Int64 {
-						var x = uint16(vv.Int())
-						hasAssigned = true
-						fieldValue.Set(reflect.ValueOf(&x))
-					}
-				case core.Complex64Type:
-					var x complex64
+			} else if nulVal, ok := fieldValue.Addr().Interface().(sql.Scanner); ok {
+				// !<winxxp>! 增加支持sql.Scanner接口的结构，如sql.NullString
+				hasAssigned = true
+				if err := nulVal.Scan(vv.Interface()); err != nil {
+					session.engine.logger.Error("sql.Sanner error:", err.Error())
+					hasAssigned = false
+				}
+			} else if col.SQLType.IsJson() {
+				if rawValueType.Kind() == reflect.String {
+					hasAssigned = true
+					x := reflect.New(fieldType)
 					if len([]byte(vv.String())) > 0 {
-						err := json.Unmarshal([]byte(vv.String()), &x)
+						err := json.Unmarshal([]byte(vv.String()), x.Interface())
 						if err != nil {
 							return nil, err
 						}
-						fieldValue.Set(reflect.ValueOf(&x))
+						fieldValue.Set(x.Elem())
 					}
+				} else if rawValueType.Kind() == reflect.Slice {
 					hasAssigned = true
-				case core.Complex128Type:
-					var x complex128
-					if len([]byte(vv.String())) > 0 {
-						err := json.Unmarshal([]byte(vv.String()), &x)
+					x := reflect.New(fieldType)
+					if len(vv.Bytes()) > 0 {
+						err := json.Unmarshal(vv.Bytes(), x.Interface())
 						if err != nil {
 							return nil, err
 						}
-						fieldValue.Set(reflect.ValueOf(&x))
+						fieldValue.Set(x.Elem())
 					}
-					hasAssigned = true
-				} // switch fieldType
-			} // switch fieldType.Kind()
-
-			// !nashtsai! for value can't be assigned directly fallback to convert to []byte then back to value
-			if !hasAssigned {
-				data, err := value2Bytes(&rawValue)
+				}
+			} else if session.statement.UseCascade {
+				table, err := session.engine.autoMapType(*fieldValue)
 				if err != nil {
 					return nil, err
 				}
 
-				if err = session.bytes2Value(col, fieldValue, data); err != nil {
+				hasAssigned = true
+				if len(table.PrimaryKeys) != 1 {
+					return nil, errors.New("unsupported non or composited primary key cascade")
+				}
+				var pk = make(core.PK, len(table.PrimaryKeys))
+				pk[0], err = asKind(vv, rawValueType)
+				if err != nil {
 					return nil, err
 				}
+
+				if !isPKZero(pk) {
+					// !nashtsai! TODO for hasOne relationship, it's preferred to use join query for eager fetch
+					// however, also need to consider adding a 'lazy' attribute to xorm tag which allow hasOne
+					// property to be fetched lazily
+					structInter := reflect.New(fieldValue.Type())
+					has, err := session.ID(pk).NoCascade().get(structInter.Interface())
+					if err != nil {
+						return nil, err
+					}
+					if has {
+						fieldValue.Set(structInter.Elem())
+					} else {
+						return nil, errors.New("cascade obj is not exist")
+					}
+				}
+			}
+		case reflect.Ptr:
+			// !nashtsai! TODO merge duplicated codes above
+			switch fieldType {
+			// following types case matching ptr's native type, therefore assign ptr directly
+			case core.PtrStringType:
+				if rawValueType.Kind() == reflect.String {
+					x := vv.String()
+					hasAssigned = true
+					fieldValue.Set(reflect.ValueOf(&x))
+				}
+			case core.PtrBoolType:
+				if rawValueType.Kind() == reflect.Bool {
+					x := vv.Bool()
+					hasAssigned = true
+					fieldValue.Set(reflect.ValueOf(&x))
+				}
+			case core.PtrTimeType:
+				if rawValueType == core.PtrTimeType {
+					hasAssigned = true
+					var x = rawValue.Interface().(time.Time)
+					fieldValue.Set(reflect.ValueOf(&x))
+				}
+			case core.PtrFloat64Type:
+				if rawValueType.Kind() == reflect.Float64 {
+					x := vv.Float()
+					hasAssigned = true
+					fieldValue.Set(reflect.ValueOf(&x))
+				}
+			case core.PtrUint64Type:
+				if rawValueType.Kind() == reflect.Int64 {
+					var x = uint64(vv.Int())
+					hasAssigned = true
+					fieldValue.Set(reflect.ValueOf(&x))
+				}
+			case core.PtrInt64Type:
+				if rawValueType.Kind() == reflect.Int64 {
+					x := vv.Int()
+					hasAssigned = true
+					fieldValue.Set(reflect.ValueOf(&x))
+				}
+			case core.PtrFloat32Type:
+				if rawValueType.Kind() == reflect.Float64 {
+					var x = float32(vv.Float())
+					hasAssigned = true
+					fieldValue.Set(reflect.ValueOf(&x))
+				}
+			case core.PtrIntType:
+				if rawValueType.Kind() == reflect.Int64 {
+					var x = int(vv.Int())
+					hasAssigned = true
+					fieldValue.Set(reflect.ValueOf(&x))
+				}
+			case core.PtrInt32Type:
+				if rawValueType.Kind() == reflect.Int64 {
+					var x = int32(vv.Int())
+					hasAssigned = true
+					fieldValue.Set(reflect.ValueOf(&x))
+				}
+			case core.PtrInt8Type:
+				if rawValueType.Kind() == reflect.Int64 {
+					var x = int8(vv.Int())
+					hasAssigned = true
+					fieldValue.Set(reflect.ValueOf(&x))
+				}
+			case core.PtrInt16Type:
+				if rawValueType.Kind() == reflect.Int64 {
+					var x = int16(vv.Int())
+					hasAssigned = true
+					fieldValue.Set(reflect.ValueOf(&x))
+				}
+			case core.PtrUintType:
+				if rawValueType.Kind() == reflect.Int64 {
+					var x = uint(vv.Int())
+					hasAssigned = true
+					fieldValue.Set(reflect.ValueOf(&x))
+				}
+			case core.PtrUint32Type:
+				if rawValueType.Kind() == reflect.Int64 {
+					var x = uint32(vv.Int())
+					hasAssigned = true
+					fieldValue.Set(reflect.ValueOf(&x))
+				}
+			case core.Uint8Type:
+				if rawValueType.Kind() == reflect.Int64 {
+					var x = uint8(vv.Int())
+					hasAssigned = true
+					fieldValue.Set(reflect.ValueOf(&x))
+				}
+			case core.Uint16Type:
+				if rawValueType.Kind() == reflect.Int64 {
+					var x = uint16(vv.Int())
+					hasAssigned = true
+					fieldValue.Set(reflect.ValueOf(&x))
+				}
+			case core.Complex64Type:
+				var x complex64
+				if len([]byte(vv.String())) > 0 {
+					err := json.Unmarshal([]byte(vv.String()), &x)
+					if err != nil {
+						return nil, err
+					}
+					fieldValue.Set(reflect.ValueOf(&x))
+				}
+				hasAssigned = true
+			case core.Complex128Type:
+				var x complex128
+				if len([]byte(vv.String())) > 0 {
+					err := json.Unmarshal([]byte(vv.String()), &x)
+					if err != nil {
+						return nil, err
+					}
+					fieldValue.Set(reflect.ValueOf(&x))
+				}
+				hasAssigned = true
+			} // switch fieldType
+		} // switch fieldType.Kind()
+
+		// !nashtsai! for value can't be assigned directly fallback to convert to []byte then back to value
+		if !hasAssigned {
+			data, err := value2Bytes(&rawValue)
+			if err != nil {
+				return nil, err
+			}
+
+			if err = session.bytes2Value(col, fieldValue, data); err != nil {
+				return nil, err
 			}
 		}
 	}

session_cols_test.go

@@ -67,3 +67,43 @@ func TestCols(t *testing.T) {
 	assert.EqualValues(t, "", tb.Col1)
 	assert.EqualValues(t, "", tb.Col2)
 }
+
+func TestMustCol(t *testing.T) {
+	assert.NoError(t, prepareEngine())
+
+	type CustomerUpdate struct {
+		Id        int64  `form:"id" json:"id"`
+		Username  string `form:"username" json:"username" binding:"required"`
+		Email     string `form:"email" json:"email"`
+		Sex       int    `form:"sex" json:"sex"`
+		Name      string `form:"name" json:"name" binding:"required"`
+		Telephone string `form:"telephone" json:"telephone"`
+		Type      int    `form:"type" json:"type" binding:"required"`
+		ParentId  int64  `form:"parent_id" json:"parent_id" xorm:"int null"`
+		Remark    string `form:"remark" json:"remark"`
+		Status    int    `form:"status" json:"status" binding:"required"`
+		Age       int    `form:"age" json:"age"`
+		CreatedAt int64  `xorm:"created" form:"created_at" json:"created_at"`
+		UpdatedAt int64  `xorm:"updated" form:"updated_at" json:"updated_at"`
+		BirthDate int64  `form:"birth_date" json:"birth_date"`
+		Password  string `xorm:"varchar(200)" form:"password" json:"password"`
+	}
+
+	assertSync(t, new(CustomerUpdate))
+
+	var customer = CustomerUpdate{
+		ParentId: 1,
+	}
+	cnt, err := testEngine.Insert(&customer)
+	assert.NoError(t, err)
+	assert.EqualValues(t, 1, cnt)
+
+	type CustomerOnlyId struct {
+		Id int64
+	}
+
+	customer.ParentId = 0
+	affected, err := testEngine.MustCols("parent_id").Update(&customer, &CustomerOnlyId{Id: customer.Id})
+	assert.NoError(t, err)
+	assert.EqualValues(t, 1, affected)
+}