638 lines
16 KiB
Go
638 lines
16 KiB
Go
// Copyright 2017 The Xorm Authors. All rights reserved.
|
|
// Use of this source code is governed by a BSD-style
|
|
// license that can be found in the LICENSE file.
|
|
|
|
package statements
|
|
|
|
import (
|
|
"database/sql/driver"
|
|
"errors"
|
|
"fmt"
|
|
"reflect"
|
|
"time"
|
|
|
|
"xorm.io/builder"
|
|
"xorm.io/xorm/convert"
|
|
"xorm.io/xorm/dialects"
|
|
"xorm.io/xorm/internal/json"
|
|
"xorm.io/xorm/internal/utils"
|
|
"xorm.io/xorm/schemas"
|
|
)
|
|
|
|
func (statement *Statement) ifAddColUpdate(col *schemas.Column, includeVersion, includeUpdated, includeNil,
|
|
includeAutoIncr, update bool,
|
|
) (bool, error) {
|
|
columnMap := statement.ColumnMap
|
|
omitColumnMap := statement.OmitColumnMap
|
|
unscoped := statement.unscoped
|
|
|
|
if !includeVersion && col.IsVersion {
|
|
return false, nil
|
|
}
|
|
if col.IsCreated && !columnMap.Contain(col.Name) {
|
|
return false, nil
|
|
}
|
|
if !includeUpdated && col.IsUpdated {
|
|
return false, nil
|
|
}
|
|
if !includeAutoIncr && col.IsAutoIncrement {
|
|
return false, nil
|
|
}
|
|
if col.IsDeleted && !unscoped {
|
|
return false, nil
|
|
}
|
|
if omitColumnMap.Contain(col.Name) {
|
|
return false, nil
|
|
}
|
|
if len(columnMap) > 0 && !columnMap.Contain(col.Name) {
|
|
return false, nil
|
|
}
|
|
|
|
if col.MapType == schemas.ONLYFROMDB {
|
|
return false, nil
|
|
}
|
|
|
|
if statement.IncrColumns.IsColExist(col.Name) {
|
|
return false, nil
|
|
} else if statement.DecrColumns.IsColExist(col.Name) {
|
|
return false, nil
|
|
} else if statement.ExprColumns.IsColExist(col.Name) {
|
|
return false, nil
|
|
}
|
|
|
|
return true, nil
|
|
}
|
|
|
|
// BuildUpdates auto generating update columnes and values according a struct
|
|
func (statement *Statement) BuildUpdates(tableValue reflect.Value,
|
|
includeVersion, includeUpdated, includeNil,
|
|
includeAutoIncr, update bool,
|
|
) ([]string, []interface{}, error) {
|
|
table := statement.RefTable
|
|
allUseBool := statement.allUseBool
|
|
useAllCols := statement.useAllCols
|
|
mustColumnMap := statement.MustColumnMap
|
|
nullableMap := statement.NullableMap
|
|
|
|
colNames := make([]string, 0)
|
|
args := make([]interface{}, 0)
|
|
|
|
for _, col := range table.Columns() {
|
|
ok, err := statement.ifAddColUpdate(col, includeVersion, includeUpdated, includeNil,
|
|
includeAutoIncr, update)
|
|
if err != nil {
|
|
return nil, nil, err
|
|
}
|
|
if !ok {
|
|
continue
|
|
}
|
|
|
|
fieldValuePtr, err := col.ValueOfV(&tableValue)
|
|
if err != nil {
|
|
return nil, nil, err
|
|
}
|
|
if fieldValuePtr == nil {
|
|
continue
|
|
}
|
|
|
|
fieldValue := *fieldValuePtr
|
|
fieldType := reflect.TypeOf(fieldValue.Interface())
|
|
if fieldType == nil {
|
|
continue
|
|
}
|
|
|
|
requiredField := useAllCols
|
|
includeNil := useAllCols
|
|
|
|
if b, ok := getFlagForColumn(mustColumnMap, col); ok {
|
|
if b {
|
|
requiredField = true
|
|
} else {
|
|
continue
|
|
}
|
|
}
|
|
|
|
// !evalphobia! set fieldValue as nil when column is nullable and zero-value
|
|
if b, ok := getFlagForColumn(nullableMap, col); ok {
|
|
if b && col.Nullable && utils.IsZero(fieldValue.Interface()) {
|
|
var nilValue *int
|
|
fieldValue = reflect.ValueOf(nilValue)
|
|
fieldType = reflect.TypeOf(fieldValue.Interface())
|
|
includeNil = true
|
|
}
|
|
}
|
|
|
|
var val interface{}
|
|
|
|
if fieldValue.CanAddr() {
|
|
if structConvert, ok := fieldValue.Addr().Interface().(convert.Conversion); ok {
|
|
data, err := structConvert.ToDB()
|
|
if err != nil {
|
|
return nil, nil, err
|
|
}
|
|
if data != nil {
|
|
val = data
|
|
if !col.SQLType.IsBlob() {
|
|
val = string(data)
|
|
}
|
|
}
|
|
goto APPEND
|
|
}
|
|
}
|
|
|
|
if structConvert, ok := fieldValue.Interface().(convert.Conversion); ok && !fieldValue.IsNil() {
|
|
data, err := structConvert.ToDB()
|
|
if err != nil {
|
|
return nil, nil, err
|
|
}
|
|
if data != nil {
|
|
val = data
|
|
if !col.SQLType.IsBlob() {
|
|
val = string(data)
|
|
}
|
|
}
|
|
goto APPEND
|
|
}
|
|
|
|
if fieldType.Kind() == reflect.Ptr {
|
|
if fieldValue.IsNil() {
|
|
if includeNil {
|
|
args = append(args, nil)
|
|
colNames = append(colNames, fmt.Sprintf("%v=?", statement.quote(col.Name)))
|
|
}
|
|
continue
|
|
} else if !fieldValue.IsValid() {
|
|
continue
|
|
} else {
|
|
// dereference ptr type to instance type
|
|
fieldValue = fieldValue.Elem()
|
|
fieldType = reflect.TypeOf(fieldValue.Interface())
|
|
requiredField = true
|
|
}
|
|
}
|
|
|
|
switch fieldType.Kind() {
|
|
case reflect.Bool:
|
|
if allUseBool || requiredField {
|
|
val = fieldValue.Interface()
|
|
} else {
|
|
// if a bool in a struct, it will not be as a condition because it default is false,
|
|
// please use Where() instead
|
|
continue
|
|
}
|
|
case reflect.String:
|
|
if !requiredField && fieldValue.String() == "" {
|
|
continue
|
|
}
|
|
// for MyString, should convert to string or panic
|
|
if fieldType.String() != reflect.String.String() {
|
|
val = fieldValue.String()
|
|
} else {
|
|
val = fieldValue.Interface()
|
|
}
|
|
case reflect.Int8, reflect.Int16, reflect.Int, reflect.Int32, reflect.Int64:
|
|
if !requiredField && fieldValue.Int() == 0 {
|
|
continue
|
|
}
|
|
val = fieldValue.Interface()
|
|
case reflect.Float32, reflect.Float64:
|
|
if !requiredField && fieldValue.Float() == 0.0 {
|
|
continue
|
|
}
|
|
val = fieldValue.Interface()
|
|
case reflect.Uint8, reflect.Uint16, reflect.Uint, reflect.Uint32, reflect.Uint64:
|
|
if !requiredField && fieldValue.Uint() == 0 {
|
|
continue
|
|
}
|
|
val = fieldValue.Interface()
|
|
case reflect.Struct:
|
|
if fieldType.ConvertibleTo(schemas.TimeType) {
|
|
t := fieldValue.Convert(schemas.TimeType).Interface().(time.Time)
|
|
if !requiredField && (t.IsZero() || !fieldValue.IsValid()) {
|
|
continue
|
|
}
|
|
val, err = dialects.FormatColumnTime(statement.dialect, statement.defaultTimeZone, col, t)
|
|
if err != nil {
|
|
return nil, nil, err
|
|
}
|
|
} else if nulType, ok := fieldValue.Interface().(driver.Valuer); ok {
|
|
val, _ = nulType.Value()
|
|
if val == nil && !requiredField {
|
|
continue
|
|
}
|
|
} else {
|
|
if !col.IsJSON {
|
|
table, err := statement.tagParser.ParseWithCache(fieldValue)
|
|
if err != nil {
|
|
val = fieldValue.Interface()
|
|
} else {
|
|
if len(table.PrimaryKeys) == 1 {
|
|
pkField := reflect.Indirect(fieldValue).FieldByName(table.PKColumns()[0].FieldName)
|
|
// fix non-int pk issues
|
|
if pkField.IsValid() && (!requiredField && !utils.IsZero(pkField.Interface())) {
|
|
val = pkField.Interface()
|
|
} else {
|
|
continue
|
|
}
|
|
} else {
|
|
return nil, nil, errors.New("Not supported multiple primary keys")
|
|
}
|
|
}
|
|
} else {
|
|
// Blank struct could not be as update data
|
|
if requiredField || !utils.IsStructZero(fieldValue) {
|
|
bytes, err := json.DefaultJSONHandler.Marshal(fieldValue.Interface())
|
|
if err != nil {
|
|
return nil, nil, fmt.Errorf("mashal %v failed", fieldValue.Interface())
|
|
}
|
|
if col.SQLType.IsText() {
|
|
val = string(bytes)
|
|
} else if col.SQLType.IsBlob() {
|
|
val = bytes
|
|
}
|
|
} else {
|
|
continue
|
|
}
|
|
}
|
|
}
|
|
case reflect.Array, reflect.Slice, reflect.Map:
|
|
if !requiredField {
|
|
if fieldValue == reflect.Zero(fieldType) {
|
|
continue
|
|
}
|
|
if fieldType.Kind() == reflect.Array {
|
|
if utils.IsArrayZero(fieldValue) {
|
|
continue
|
|
}
|
|
} else if fieldValue.IsNil() || !fieldValue.IsValid() || fieldValue.Len() == 0 {
|
|
continue
|
|
}
|
|
}
|
|
|
|
if col.SQLType.IsText() {
|
|
bytes, err := json.DefaultJSONHandler.Marshal(fieldValue.Interface())
|
|
if err != nil {
|
|
return nil, nil, err
|
|
}
|
|
val = string(bytes)
|
|
} else if col.SQLType.IsBlob() {
|
|
var bytes []byte
|
|
var err error
|
|
if fieldType.Kind() == reflect.Slice &&
|
|
fieldType.Elem().Kind() == reflect.Uint8 {
|
|
if fieldValue.Len() > 0 {
|
|
val = fieldValue.Bytes()
|
|
} else {
|
|
continue
|
|
}
|
|
} else if fieldType.Kind() == reflect.Array &&
|
|
fieldType.Elem().Kind() == reflect.Uint8 {
|
|
val = fieldValue.Slice(0, 0).Interface()
|
|
} else {
|
|
bytes, err = json.DefaultJSONHandler.Marshal(fieldValue.Interface())
|
|
if err != nil {
|
|
return nil, nil, err
|
|
}
|
|
val = bytes
|
|
}
|
|
} else {
|
|
continue
|
|
}
|
|
default:
|
|
val = fieldValue.Interface()
|
|
}
|
|
|
|
APPEND:
|
|
args = append(args, val)
|
|
colNames = append(colNames, fmt.Sprintf("%v = ?", statement.quote(col.Name)))
|
|
}
|
|
|
|
return colNames, args, nil
|
|
}
|
|
|
|
func (statement *Statement) writeUpdateTop(updateWriter *builder.BytesWriter) error {
|
|
if statement.dialect.URI().DBType != schemas.MSSQL || statement.LimitN == nil {
|
|
return nil
|
|
}
|
|
|
|
table := statement.RefTable
|
|
if statement.HasOrderBy() && table != nil && len(table.PrimaryKeys) == 1 {
|
|
return nil
|
|
}
|
|
|
|
_, err := fmt.Fprintf(updateWriter, " TOP (%d)", *statement.LimitN)
|
|
return err
|
|
}
|
|
|
|
func (statement *Statement) writeUpdateTableName(updateWriter *builder.BytesWriter) error {
|
|
tableName := statement.quote(statement.TableName())
|
|
if statement.TableAlias == "" {
|
|
_, err := fmt.Fprint(updateWriter, " ", tableName)
|
|
return err
|
|
}
|
|
|
|
switch statement.dialect.URI().DBType {
|
|
case schemas.MSSQL:
|
|
_, err := fmt.Fprint(updateWriter, " ", statement.TableAlias)
|
|
return err
|
|
default:
|
|
_, err := fmt.Fprint(updateWriter, " ", tableName, " AS ", statement.TableAlias)
|
|
return err
|
|
}
|
|
}
|
|
|
|
func (statement *Statement) writeUpdateFrom(updateWriter *builder.BytesWriter) error {
|
|
if statement.dialect.URI().DBType != schemas.MSSQL || statement.TableAlias == "" {
|
|
return nil
|
|
}
|
|
|
|
_, err := fmt.Fprint(updateWriter, " FROM ", statement.quote(statement.TableName()), " ", statement.TableAlias)
|
|
return err
|
|
}
|
|
|
|
func (statement *Statement) writeUpdateLimit(updateWriter *builder.BytesWriter, cond builder.Cond) error {
|
|
if statement.LimitN == nil {
|
|
return nil
|
|
}
|
|
|
|
table := statement.RefTable
|
|
tableName := statement.TableName()
|
|
|
|
limitValue := *statement.LimitN
|
|
switch statement.dialect.URI().DBType {
|
|
case schemas.MYSQL:
|
|
_, err := fmt.Fprintf(updateWriter, " LIMIT %d", limitValue)
|
|
return err
|
|
case schemas.SQLITE:
|
|
if cond.IsValid() {
|
|
if _, err := fmt.Fprint(updateWriter, " AND "); err != nil {
|
|
return err
|
|
}
|
|
} else {
|
|
if _, err := fmt.Fprint(updateWriter, " WHERE "); err != nil {
|
|
return err
|
|
}
|
|
}
|
|
if _, err := fmt.Fprint(updateWriter, "rowid IN (SELECT rowid FROM ", statement.quote(tableName)); err != nil {
|
|
return err
|
|
}
|
|
if err := statement.writeWhereCond(updateWriter, cond); err != nil {
|
|
return err
|
|
}
|
|
if err := statement.writeOrderBys(updateWriter); err != nil {
|
|
return err
|
|
}
|
|
_, err := fmt.Fprintf(updateWriter, " LIMIT %d)", limitValue)
|
|
return err
|
|
case schemas.POSTGRES:
|
|
if cond.IsValid() {
|
|
if _, err := fmt.Fprint(updateWriter, " AND "); err != nil {
|
|
return err
|
|
}
|
|
} else {
|
|
if _, err := fmt.Fprint(updateWriter, " WHERE "); err != nil {
|
|
return err
|
|
}
|
|
}
|
|
if _, err := fmt.Fprint(updateWriter, "CTID IN (SELECT CTID FROM ", statement.quote(tableName)); err != nil {
|
|
return err
|
|
}
|
|
if err := statement.writeWhereCond(updateWriter, cond); err != nil {
|
|
return err
|
|
}
|
|
if err := statement.writeOrderBys(updateWriter); err != nil {
|
|
return err
|
|
}
|
|
_, err := fmt.Fprintf(updateWriter, " LIMIT %d)", limitValue)
|
|
return err
|
|
case schemas.MSSQL:
|
|
if statement.HasOrderBy() && table != nil && len(table.PrimaryKeys) == 1 {
|
|
if _, err := fmt.Fprintf(updateWriter, " WHERE %s IN (SELECT TOP (%d) %s FROM %v",
|
|
table.PrimaryKeys[0], limitValue, table.PrimaryKeys[0],
|
|
statement.quote(tableName)); err != nil {
|
|
return err
|
|
}
|
|
if err := statement.writeWhereCond(updateWriter, cond); err != nil {
|
|
return err
|
|
}
|
|
if err := statement.writeOrderBys(updateWriter); err != nil {
|
|
return err
|
|
}
|
|
_, err := fmt.Fprint(updateWriter, ")")
|
|
return err
|
|
}
|
|
return nil
|
|
default: // TODO: Oracle support needed
|
|
return fmt.Errorf("not implemented")
|
|
}
|
|
}
|
|
|
|
func (statement *Statement) GenConditionsFromMap(m interface{}) ([]builder.Cond, error) {
|
|
switch t := m.(type) {
|
|
case map[string]interface{}:
|
|
conds := []builder.Cond{}
|
|
for k, v := range t {
|
|
conds = append(conds, builder.Eq{k: v})
|
|
}
|
|
return conds, nil
|
|
case map[string]string:
|
|
conds := []builder.Cond{}
|
|
for k, v := range t {
|
|
conds = append(conds, builder.Eq{k: v})
|
|
}
|
|
return conds, nil
|
|
default:
|
|
return nil, fmt.Errorf("unsupported condition map type %v", t)
|
|
}
|
|
}
|
|
|
|
func (statement *Statement) writeVersionIncrSet(w builder.Writer, v reflect.Value, hasPreviousSet bool) error {
|
|
if v.Type().Kind() != reflect.Struct {
|
|
return nil
|
|
}
|
|
|
|
table := statement.RefTable
|
|
if !(statement.RefTable != nil && table.Version != "" && statement.CheckVersion) {
|
|
return nil
|
|
}
|
|
|
|
verValue, err := table.VersionColumn().ValueOfV(&v)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
if verValue == nil {
|
|
return nil
|
|
}
|
|
|
|
if hasPreviousSet {
|
|
if _, err := fmt.Fprint(w, ", "); err != nil {
|
|
return err
|
|
}
|
|
}
|
|
|
|
if _, err := fmt.Fprint(w, statement.quote(table.Version), " = ", statement.quote(table.Version), " + 1"); err != nil {
|
|
return err
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func (statement *Statement) writeIncrSets(w builder.Writer, hasPreviousSet bool) error {
|
|
for i, expr := range statement.IncrColumns {
|
|
if i > 0 || hasPreviousSet {
|
|
if _, err := fmt.Fprint(w, ", "); err != nil {
|
|
return err
|
|
}
|
|
}
|
|
if _, err := fmt.Fprint(w, statement.quote(expr.ColName), " = ", statement.quote(expr.ColName), " + ?"); err != nil {
|
|
return err
|
|
}
|
|
w.Append(expr.Arg)
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func (statement *Statement) writeDecrSets(w builder.Writer, hasPreviousSet bool) error {
|
|
// for update action to like "column = column - ?"
|
|
for i, expr := range statement.DecrColumns {
|
|
if i > 0 || hasPreviousSet {
|
|
if _, err := fmt.Fprint(w, ", "); err != nil {
|
|
return err
|
|
}
|
|
}
|
|
if _, err := fmt.Fprint(w, statement.quote(expr.ColName), " = ", statement.quote(expr.ColName), " - ?"); err != nil {
|
|
return err
|
|
}
|
|
w.Append(expr.Arg)
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func (statement *Statement) writeExprSets(w *builder.BytesWriter, hasPreviousSet bool) error {
|
|
// for update action to like "column = expression"
|
|
for i, expr := range statement.ExprColumns {
|
|
if i > 0 || hasPreviousSet {
|
|
if _, err := fmt.Fprint(w, ", "); err != nil {
|
|
return err
|
|
}
|
|
}
|
|
switch tp := expr.Arg.(type) {
|
|
case string:
|
|
if len(tp) == 0 {
|
|
tp = "''"
|
|
}
|
|
if _, err := fmt.Fprint(w, statement.quote(expr.ColName), " = ", tp); err != nil {
|
|
return err
|
|
}
|
|
case *builder.Builder:
|
|
if _, err := fmt.Fprint(w, statement.quote(expr.ColName), " = ("); err != nil {
|
|
return err
|
|
}
|
|
if err := tp.WriteTo(statement.QuoteReplacer(w)); err != nil {
|
|
return err
|
|
}
|
|
if _, err := fmt.Fprint(w, ")"); err != nil {
|
|
return err
|
|
}
|
|
default:
|
|
if _, err := fmt.Fprint(w, statement.quote(expr.ColName), " = ?"); err != nil {
|
|
return err
|
|
}
|
|
w.Append(expr.Arg)
|
|
}
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func (statement *Statement) writeUpdateSets(w *builder.BytesWriter, v reflect.Value, colNames []string, args []interface{}) error {
|
|
previousLen := w.Len()
|
|
for i, colName := range colNames {
|
|
if i > 0 {
|
|
if _, err := fmt.Fprint(w, ", "); err != nil {
|
|
return err
|
|
}
|
|
}
|
|
if _, err := fmt.Fprint(w, colName); err != nil {
|
|
return err
|
|
}
|
|
}
|
|
w.Append(args...)
|
|
|
|
if err := statement.writeIncrSets(w, w.Len() > previousLen); err != nil {
|
|
return err
|
|
}
|
|
|
|
if err := statement.writeDecrSets(w, w.Len() > previousLen); err != nil {
|
|
return err
|
|
}
|
|
|
|
if err := statement.writeExprSets(w, w.Len() > previousLen); err != nil {
|
|
return err
|
|
}
|
|
|
|
if err := statement.writeVersionIncrSet(w, v, w.Len() > previousLen); err != nil {
|
|
return err
|
|
}
|
|
return nil
|
|
}
|
|
|
|
var ErrNoColumnsTobeUpdated = errors.New("no columns found to be updated")
|
|
|
|
func (statement *Statement) WriteUpdate(updateWriter *builder.BytesWriter, cond builder.Cond, v reflect.Value, colNames []string, args []interface{}) error {
|
|
if _, err := fmt.Fprintf(updateWriter, "UPDATE"); err != nil {
|
|
return err
|
|
}
|
|
|
|
if err := statement.writeUpdateTop(updateWriter); err != nil {
|
|
return err
|
|
}
|
|
|
|
if err := statement.writeUpdateTableName(updateWriter); err != nil {
|
|
return err
|
|
}
|
|
|
|
// write set
|
|
if _, err := fmt.Fprint(updateWriter, " SET "); err != nil {
|
|
return err
|
|
}
|
|
previousLen := updateWriter.Len()
|
|
|
|
if err := statement.writeUpdateSets(updateWriter, v, colNames, args); err != nil {
|
|
return err
|
|
}
|
|
|
|
// if no columns to be updated, return error
|
|
if previousLen == updateWriter.Len() {
|
|
return ErrNoColumnsTobeUpdated
|
|
}
|
|
|
|
// write from
|
|
if err := statement.writeUpdateFrom(updateWriter); err != nil {
|
|
return err
|
|
}
|
|
|
|
if statement.dialect.URI().DBType == schemas.MSSQL {
|
|
table := statement.RefTable
|
|
if statement.HasOrderBy() && table != nil && len(table.PrimaryKeys) == 1 {
|
|
} else {
|
|
// write where
|
|
if err := statement.writeWhereCond(updateWriter, cond); err != nil {
|
|
return err
|
|
}
|
|
}
|
|
} else {
|
|
// write where
|
|
if err := statement.writeWhereCond(updateWriter, cond); err != nil {
|
|
return err
|
|
}
|
|
}
|
|
|
|
if statement.dialect.URI().DBType == schemas.MYSQL {
|
|
if err := statement.writeOrderBys(updateWriter); err != nil {
|
|
return err
|
|
}
|
|
}
|
|
|
|
return statement.writeUpdateLimit(updateWriter, cond)
|
|
}
|