295 lines
7.6 KiB
Go
295 lines
7.6 KiB
Go
// Copyright 2017 The Xorm Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package statements
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import (
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"database/sql/driver"
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"errors"
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"fmt"
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"reflect"
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"time"
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"xorm.io/xorm/convert"
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"xorm.io/xorm/dialects"
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"xorm.io/xorm/internal/json"
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"xorm.io/xorm/internal/utils"
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"xorm.io/xorm/schemas"
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)
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func (statement *Statement) ifAddColUpdate(col *schemas.Column, includeVersion, includeUpdated, includeNil,
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includeAutoIncr, update bool) (bool, error) {
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columnMap := statement.ColumnMap
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omitColumnMap := statement.OmitColumnMap
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unscoped := statement.unscoped
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if !includeVersion && col.IsVersion {
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return false, nil
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}
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if col.IsCreated && !columnMap.Contain(col.Name) {
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return false, nil
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}
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if !includeUpdated && col.IsUpdated {
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return false, nil
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}
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if !includeAutoIncr && col.IsAutoIncrement {
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return false, nil
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}
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if col.IsDeleted && !unscoped {
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return false, nil
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}
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if omitColumnMap.Contain(col.Name) {
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return false, nil
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}
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if len(columnMap) > 0 && !columnMap.Contain(col.Name) {
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return false, nil
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}
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if col.MapType == schemas.ONLYFROMDB {
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return false, nil
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}
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if statement.IncrColumns.IsColExist(col.Name) {
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return false, nil
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} else if statement.DecrColumns.IsColExist(col.Name) {
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return false, nil
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} else if statement.ExprColumns.IsColExist(col.Name) {
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return false, nil
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}
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return true, nil
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}
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// BuildUpdates auto generating update columnes and values according a struct
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func (statement *Statement) BuildUpdates(tableValue reflect.Value,
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includeVersion, includeUpdated, includeNil,
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includeAutoIncr, update bool) ([]string, []interface{}, error) {
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table := statement.RefTable
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allUseBool := statement.allUseBool
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useAllCols := statement.useAllCols
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mustColumnMap := statement.MustColumnMap
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nullableMap := statement.NullableMap
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var colNames = make([]string, 0)
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var args = make([]interface{}, 0)
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for _, col := range table.Columns() {
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ok, err := statement.ifAddColUpdate(col, includeVersion, includeUpdated, includeNil,
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includeAutoIncr, update)
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if err != nil {
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return nil, nil, err
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}
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if !ok {
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continue
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}
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fieldValuePtr, err := col.ValueOfV(&tableValue)
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if err != nil {
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return nil, nil, err
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}
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fieldValue := *fieldValuePtr
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fieldType := reflect.TypeOf(fieldValue.Interface())
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if fieldType == nil {
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continue
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}
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requiredField := useAllCols
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includeNil := useAllCols
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if b, ok := getFlagForColumn(mustColumnMap, col); ok {
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if b {
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requiredField = true
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} else {
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continue
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}
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}
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// !evalphobia! set fieldValue as nil when column is nullable and zero-value
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if b, ok := getFlagForColumn(nullableMap, col); ok {
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if b && col.Nullable && utils.IsZero(fieldValue.Interface()) {
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var nilValue *int
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fieldValue = reflect.ValueOf(nilValue)
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fieldType = reflect.TypeOf(fieldValue.Interface())
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includeNil = true
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}
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}
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var val interface{}
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if fieldValue.CanAddr() {
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if structConvert, ok := fieldValue.Addr().Interface().(convert.Conversion); ok {
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data, err := structConvert.ToDB()
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if err != nil {
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return nil, nil, err
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}
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val = data
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goto APPEND
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}
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}
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if structConvert, ok := fieldValue.Interface().(convert.Conversion); ok && !fieldValue.IsNil() {
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data, err := structConvert.ToDB()
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if err != nil {
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return nil, nil, err
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}
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val = data
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goto APPEND
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}
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if fieldType.Kind() == reflect.Ptr {
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if fieldValue.IsNil() {
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if includeNil {
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args = append(args, nil)
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colNames = append(colNames, fmt.Sprintf("%v=?", statement.quote(col.Name)))
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}
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continue
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} else if !fieldValue.IsValid() {
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continue
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} else {
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// dereference ptr type to instance type
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fieldValue = fieldValue.Elem()
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fieldType = reflect.TypeOf(fieldValue.Interface())
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requiredField = true
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}
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}
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switch fieldType.Kind() {
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case reflect.Bool:
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if allUseBool || requiredField {
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val = fieldValue.Interface()
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} else {
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// if a bool in a struct, it will not be as a condition because it default is false,
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// please use Where() instead
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continue
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}
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case reflect.String:
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if !requiredField && fieldValue.String() == "" {
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continue
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}
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// for MyString, should convert to string or panic
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if fieldType.String() != reflect.String.String() {
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val = fieldValue.String()
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} else {
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val = fieldValue.Interface()
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}
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case reflect.Int8, reflect.Int16, reflect.Int, reflect.Int32, reflect.Int64:
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if !requiredField && fieldValue.Int() == 0 {
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continue
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}
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val = fieldValue.Interface()
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case reflect.Float32, reflect.Float64:
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if !requiredField && fieldValue.Float() == 0.0 {
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continue
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}
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val = fieldValue.Interface()
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case reflect.Uint8, reflect.Uint16, reflect.Uint, reflect.Uint32, reflect.Uint64:
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if !requiredField && fieldValue.Uint() == 0 {
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continue
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}
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val = fieldValue.Interface()
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case reflect.Struct:
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if fieldType.ConvertibleTo(schemas.TimeType) {
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t := fieldValue.Convert(schemas.TimeType).Interface().(time.Time)
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if !requiredField && (t.IsZero() || !fieldValue.IsValid()) {
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continue
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}
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val = dialects.FormatColumnTime(statement.dialect, statement.defaultTimeZone, col, t)
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} else if nulType, ok := fieldValue.Interface().(driver.Valuer); ok {
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val, _ = nulType.Value()
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if val == nil && !requiredField {
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continue
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}
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} else {
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if !col.IsJSON {
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table, err := statement.tagParser.ParseWithCache(fieldValue)
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if err != nil {
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val = fieldValue.Interface()
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} else {
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if len(table.PrimaryKeys) == 1 {
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pkField := reflect.Indirect(fieldValue).FieldByName(table.PKColumns()[0].FieldName)
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// fix non-int pk issues
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if pkField.IsValid() && (!requiredField && !utils.IsZero(pkField.Interface())) {
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val = pkField.Interface()
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} else {
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continue
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}
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} else {
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return nil, nil, errors.New("Not supported multiple primary keys")
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}
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}
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} else {
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// Blank struct could not be as update data
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if requiredField || !utils.IsStructZero(fieldValue) {
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bytes, err := json.DefaultJSONHandler.Marshal(fieldValue.Interface())
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if err != nil {
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return nil, nil, fmt.Errorf("mashal %v failed", fieldValue.Interface())
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}
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if col.SQLType.IsText() {
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val = string(bytes)
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} else if col.SQLType.IsBlob() {
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val = bytes
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}
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} else {
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continue
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}
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}
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}
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case reflect.Array, reflect.Slice, reflect.Map:
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if !requiredField {
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if fieldValue == reflect.Zero(fieldType) {
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continue
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}
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if fieldType.Kind() == reflect.Array {
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if utils.IsArrayZero(fieldValue) {
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continue
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}
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} else if fieldValue.IsNil() || !fieldValue.IsValid() || fieldValue.Len() == 0 {
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continue
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}
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}
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if col.SQLType.IsText() {
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bytes, err := json.DefaultJSONHandler.Marshal(fieldValue.Interface())
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if err != nil {
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return nil, nil, err
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}
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val = string(bytes)
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} else if col.SQLType.IsBlob() {
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var bytes []byte
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var err error
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if fieldType.Kind() == reflect.Slice &&
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fieldType.Elem().Kind() == reflect.Uint8 {
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if fieldValue.Len() > 0 {
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val = fieldValue.Bytes()
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} else {
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continue
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}
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} else if fieldType.Kind() == reflect.Array &&
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fieldType.Elem().Kind() == reflect.Uint8 {
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val = fieldValue.Slice(0, 0).Interface()
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} else {
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bytes, err = json.DefaultJSONHandler.Marshal(fieldValue.Interface())
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if err != nil {
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return nil, nil, err
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}
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val = bytes
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}
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} else {
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continue
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}
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default:
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val = fieldValue.Interface()
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}
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APPEND:
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args = append(args, val)
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colNames = append(colNames, fmt.Sprintf("%v = ?", statement.quote(col.Name)))
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}
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return colNames, args, nil
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}
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