mirror of
https://github.com/go-gitea/gitea.git
synced 2024-12-21 05:21:26 +08:00
1253 lines
34 KiB
Go
1253 lines
34 KiB
Go
// Copyright 2015 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 xorm
|
|
|
|
import (
|
|
"database/sql/driver"
|
|
"fmt"
|
|
"reflect"
|
|
"strings"
|
|
"time"
|
|
|
|
"xorm.io/builder"
|
|
"xorm.io/core"
|
|
)
|
|
|
|
// Statement save all the sql info for executing SQL
|
|
type Statement struct {
|
|
RefTable *core.Table
|
|
Engine *Engine
|
|
Start int
|
|
LimitN int
|
|
idParam *core.PK
|
|
OrderStr string
|
|
JoinStr string
|
|
joinArgs []interface{}
|
|
GroupByStr string
|
|
HavingStr string
|
|
ColumnStr string
|
|
selectStr string
|
|
useAllCols bool
|
|
OmitStr string
|
|
AltTableName string
|
|
tableName string
|
|
RawSQL string
|
|
RawParams []interface{}
|
|
UseCascade bool
|
|
UseAutoJoin bool
|
|
StoreEngine string
|
|
Charset string
|
|
UseCache bool
|
|
UseAutoTime bool
|
|
noAutoCondition bool
|
|
IsDistinct bool
|
|
IsForUpdate bool
|
|
TableAlias string
|
|
allUseBool bool
|
|
checkVersion bool
|
|
unscoped bool
|
|
columnMap columnMap
|
|
omitColumnMap columnMap
|
|
mustColumnMap map[string]bool
|
|
nullableMap map[string]bool
|
|
incrColumns exprParams
|
|
decrColumns exprParams
|
|
exprColumns exprParams
|
|
cond builder.Cond
|
|
bufferSize int
|
|
context ContextCache
|
|
lastError error
|
|
}
|
|
|
|
// Init reset all the statement's fields
|
|
func (statement *Statement) Init() {
|
|
statement.RefTable = nil
|
|
statement.Start = 0
|
|
statement.LimitN = 0
|
|
statement.OrderStr = ""
|
|
statement.UseCascade = true
|
|
statement.JoinStr = ""
|
|
statement.joinArgs = make([]interface{}, 0)
|
|
statement.GroupByStr = ""
|
|
statement.HavingStr = ""
|
|
statement.ColumnStr = ""
|
|
statement.OmitStr = ""
|
|
statement.columnMap = columnMap{}
|
|
statement.omitColumnMap = columnMap{}
|
|
statement.AltTableName = ""
|
|
statement.tableName = ""
|
|
statement.idParam = nil
|
|
statement.RawSQL = ""
|
|
statement.RawParams = make([]interface{}, 0)
|
|
statement.UseCache = true
|
|
statement.UseAutoTime = true
|
|
statement.noAutoCondition = false
|
|
statement.IsDistinct = false
|
|
statement.IsForUpdate = false
|
|
statement.TableAlias = ""
|
|
statement.selectStr = ""
|
|
statement.allUseBool = false
|
|
statement.useAllCols = false
|
|
statement.mustColumnMap = make(map[string]bool)
|
|
statement.nullableMap = make(map[string]bool)
|
|
statement.checkVersion = true
|
|
statement.unscoped = false
|
|
statement.incrColumns = exprParams{}
|
|
statement.decrColumns = exprParams{}
|
|
statement.exprColumns = exprParams{}
|
|
statement.cond = builder.NewCond()
|
|
statement.bufferSize = 0
|
|
statement.context = nil
|
|
statement.lastError = nil
|
|
}
|
|
|
|
// NoAutoCondition if you do not want convert bean's field as query condition, then use this function
|
|
func (statement *Statement) NoAutoCondition(no ...bool) *Statement {
|
|
statement.noAutoCondition = true
|
|
if len(no) > 0 {
|
|
statement.noAutoCondition = no[0]
|
|
}
|
|
return statement
|
|
}
|
|
|
|
// Alias set the table alias
|
|
func (statement *Statement) Alias(alias string) *Statement {
|
|
statement.TableAlias = alias
|
|
return statement
|
|
}
|
|
|
|
// SQL adds raw sql statement
|
|
func (statement *Statement) SQL(query interface{}, args ...interface{}) *Statement {
|
|
switch query.(type) {
|
|
case (*builder.Builder):
|
|
var err error
|
|
statement.RawSQL, statement.RawParams, err = query.(*builder.Builder).ToSQL()
|
|
if err != nil {
|
|
statement.lastError = err
|
|
}
|
|
case string:
|
|
statement.RawSQL = query.(string)
|
|
statement.RawParams = args
|
|
default:
|
|
statement.lastError = ErrUnSupportedSQLType
|
|
}
|
|
|
|
return statement
|
|
}
|
|
|
|
// Where add Where statement
|
|
func (statement *Statement) Where(query interface{}, args ...interface{}) *Statement {
|
|
return statement.And(query, args...)
|
|
}
|
|
|
|
// And add Where & and statement
|
|
func (statement *Statement) And(query interface{}, args ...interface{}) *Statement {
|
|
switch query.(type) {
|
|
case string:
|
|
cond := builder.Expr(query.(string), args...)
|
|
statement.cond = statement.cond.And(cond)
|
|
case map[string]interface{}:
|
|
cond := builder.Eq(query.(map[string]interface{}))
|
|
statement.cond = statement.cond.And(cond)
|
|
case builder.Cond:
|
|
cond := query.(builder.Cond)
|
|
statement.cond = statement.cond.And(cond)
|
|
for _, v := range args {
|
|
if vv, ok := v.(builder.Cond); ok {
|
|
statement.cond = statement.cond.And(vv)
|
|
}
|
|
}
|
|
default:
|
|
statement.lastError = ErrConditionType
|
|
}
|
|
|
|
return statement
|
|
}
|
|
|
|
// Or add Where & Or statement
|
|
func (statement *Statement) Or(query interface{}, args ...interface{}) *Statement {
|
|
switch query.(type) {
|
|
case string:
|
|
cond := builder.Expr(query.(string), args...)
|
|
statement.cond = statement.cond.Or(cond)
|
|
case map[string]interface{}:
|
|
cond := builder.Eq(query.(map[string]interface{}))
|
|
statement.cond = statement.cond.Or(cond)
|
|
case builder.Cond:
|
|
cond := query.(builder.Cond)
|
|
statement.cond = statement.cond.Or(cond)
|
|
for _, v := range args {
|
|
if vv, ok := v.(builder.Cond); ok {
|
|
statement.cond = statement.cond.Or(vv)
|
|
}
|
|
}
|
|
default:
|
|
// TODO: not support condition type
|
|
}
|
|
return statement
|
|
}
|
|
|
|
// In generate "Where column IN (?) " statement
|
|
func (statement *Statement) In(column string, args ...interface{}) *Statement {
|
|
in := builder.In(statement.Engine.Quote(column), args...)
|
|
statement.cond = statement.cond.And(in)
|
|
return statement
|
|
}
|
|
|
|
// NotIn generate "Where column NOT IN (?) " statement
|
|
func (statement *Statement) NotIn(column string, args ...interface{}) *Statement {
|
|
notIn := builder.NotIn(statement.Engine.Quote(column), args...)
|
|
statement.cond = statement.cond.And(notIn)
|
|
return statement
|
|
}
|
|
|
|
func (statement *Statement) setRefValue(v reflect.Value) error {
|
|
var err error
|
|
statement.RefTable, err = statement.Engine.autoMapType(reflect.Indirect(v))
|
|
if err != nil {
|
|
return err
|
|
}
|
|
statement.tableName = statement.Engine.TableName(v, true)
|
|
return nil
|
|
}
|
|
|
|
func (statement *Statement) setRefBean(bean interface{}) error {
|
|
var err error
|
|
statement.RefTable, err = statement.Engine.autoMapType(rValue(bean))
|
|
if err != nil {
|
|
return err
|
|
}
|
|
statement.tableName = statement.Engine.TableName(bean, true)
|
|
return nil
|
|
}
|
|
|
|
// Auto generating update columnes and values according a struct
|
|
func (statement *Statement) buildUpdates(bean interface{},
|
|
includeVersion, includeUpdated, includeNil,
|
|
includeAutoIncr, update bool) ([]string, []interface{}) {
|
|
engine := statement.Engine
|
|
table := statement.RefTable
|
|
allUseBool := statement.allUseBool
|
|
useAllCols := statement.useAllCols
|
|
mustColumnMap := statement.mustColumnMap
|
|
nullableMap := statement.nullableMap
|
|
columnMap := statement.columnMap
|
|
omitColumnMap := statement.omitColumnMap
|
|
unscoped := statement.unscoped
|
|
|
|
var colNames = make([]string, 0)
|
|
var args = make([]interface{}, 0)
|
|
for _, col := range table.Columns() {
|
|
if !includeVersion && col.IsVersion {
|
|
continue
|
|
}
|
|
if col.IsCreated {
|
|
continue
|
|
}
|
|
if !includeUpdated && col.IsUpdated {
|
|
continue
|
|
}
|
|
if !includeAutoIncr && col.IsAutoIncrement {
|
|
continue
|
|
}
|
|
if col.IsDeleted && !unscoped {
|
|
continue
|
|
}
|
|
if omitColumnMap.contain(col.Name) {
|
|
continue
|
|
}
|
|
if len(columnMap) > 0 && !columnMap.contain(col.Name) {
|
|
continue
|
|
}
|
|
|
|
if col.MapType == core.ONLYFROMDB {
|
|
continue
|
|
}
|
|
|
|
if statement.incrColumns.isColExist(col.Name) {
|
|
continue
|
|
} else if statement.decrColumns.isColExist(col.Name) {
|
|
continue
|
|
} else if statement.exprColumns.isColExist(col.Name) {
|
|
continue
|
|
}
|
|
|
|
fieldValuePtr, err := col.ValueOf(bean)
|
|
if err != nil {
|
|
engine.logger.Error(err)
|
|
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 && 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().(core.Conversion); ok {
|
|
data, err := structConvert.ToDB()
|
|
if err != nil {
|
|
engine.logger.Error(err)
|
|
} else {
|
|
val = data
|
|
}
|
|
goto APPEND
|
|
}
|
|
}
|
|
|
|
if structConvert, ok := fieldValue.Interface().(core.Conversion); ok {
|
|
data, err := structConvert.ToDB()
|
|
if err != nil {
|
|
engine.logger.Error(err)
|
|
} else {
|
|
val = data
|
|
}
|
|
goto APPEND
|
|
}
|
|
|
|
if fieldType.Kind() == reflect.Ptr {
|
|
if fieldValue.IsNil() {
|
|
if includeNil {
|
|
args = append(args, nil)
|
|
colNames = append(colNames, fmt.Sprintf("%v=?", engine.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
|
|
}
|
|
t := int64(fieldValue.Uint())
|
|
val = reflect.ValueOf(&t).Interface()
|
|
case reflect.Struct:
|
|
if fieldType.ConvertibleTo(core.TimeType) {
|
|
t := fieldValue.Convert(core.TimeType).Interface().(time.Time)
|
|
if !requiredField && (t.IsZero() || !fieldValue.IsValid()) {
|
|
continue
|
|
}
|
|
val = engine.formatColTime(col, t)
|
|
} else if nulType, ok := fieldValue.Interface().(driver.Valuer); ok {
|
|
val, _ = nulType.Value()
|
|
} else {
|
|
if !col.SQLType.IsJson() {
|
|
engine.autoMapType(fieldValue)
|
|
if table, ok := engine.Tables[fieldValue.Type()]; ok {
|
|
if len(table.PrimaryKeys) == 1 {
|
|
pkField := reflect.Indirect(fieldValue).FieldByName(table.PKColumns()[0].FieldName)
|
|
// fix non-int pk issues
|
|
if pkField.IsValid() && (!requiredField && !isZero(pkField.Interface())) {
|
|
val = pkField.Interface()
|
|
} else {
|
|
continue
|
|
}
|
|
} else {
|
|
// TODO: how to handler?
|
|
panic("not supported")
|
|
}
|
|
} else {
|
|
val = fieldValue.Interface()
|
|
}
|
|
} else {
|
|
// Blank struct could not be as update data
|
|
if requiredField || !isStructZero(fieldValue) {
|
|
bytes, err := DefaultJSONHandler.Marshal(fieldValue.Interface())
|
|
if err != nil {
|
|
panic(fmt.Sprintf("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 isArrayValueZero(fieldValue) {
|
|
continue
|
|
}
|
|
} else if fieldValue.IsNil() || !fieldValue.IsValid() || fieldValue.Len() == 0 {
|
|
continue
|
|
}
|
|
}
|
|
|
|
if col.SQLType.IsText() {
|
|
bytes, err := DefaultJSONHandler.Marshal(fieldValue.Interface())
|
|
if err != nil {
|
|
engine.logger.Error(err)
|
|
continue
|
|
}
|
|
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 = DefaultJSONHandler.Marshal(fieldValue.Interface())
|
|
if err != nil {
|
|
engine.logger.Error(err)
|
|
continue
|
|
}
|
|
val = bytes
|
|
}
|
|
} else {
|
|
continue
|
|
}
|
|
default:
|
|
val = fieldValue.Interface()
|
|
}
|
|
|
|
APPEND:
|
|
args = append(args, val)
|
|
if col.IsPrimaryKey && engine.dialect.DBType() == "ql" {
|
|
continue
|
|
}
|
|
colNames = append(colNames, fmt.Sprintf("%v = ?", engine.Quote(col.Name)))
|
|
}
|
|
|
|
return colNames, args
|
|
}
|
|
|
|
func (statement *Statement) needTableName() bool {
|
|
return len(statement.JoinStr) > 0
|
|
}
|
|
|
|
func (statement *Statement) colName(col *core.Column, tableName string) string {
|
|
if statement.needTableName() {
|
|
var nm = tableName
|
|
if len(statement.TableAlias) > 0 {
|
|
nm = statement.TableAlias
|
|
}
|
|
return statement.Engine.Quote(nm) + "." + statement.Engine.Quote(col.Name)
|
|
}
|
|
return statement.Engine.Quote(col.Name)
|
|
}
|
|
|
|
// TableName return current tableName
|
|
func (statement *Statement) TableName() string {
|
|
if statement.AltTableName != "" {
|
|
return statement.AltTableName
|
|
}
|
|
|
|
return statement.tableName
|
|
}
|
|
|
|
// ID generate "where id = ? " statement or for composite key "where key1 = ? and key2 = ?"
|
|
func (statement *Statement) ID(id interface{}) *Statement {
|
|
idValue := reflect.ValueOf(id)
|
|
idType := reflect.TypeOf(idValue.Interface())
|
|
|
|
switch idType {
|
|
case ptrPkType:
|
|
if pkPtr, ok := (id).(*core.PK); ok {
|
|
statement.idParam = pkPtr
|
|
return statement
|
|
}
|
|
case pkType:
|
|
if pk, ok := (id).(core.PK); ok {
|
|
statement.idParam = &pk
|
|
return statement
|
|
}
|
|
}
|
|
|
|
switch idType.Kind() {
|
|
case reflect.String:
|
|
statement.idParam = &core.PK{idValue.Convert(reflect.TypeOf("")).Interface()}
|
|
return statement
|
|
}
|
|
|
|
statement.idParam = &core.PK{id}
|
|
return statement
|
|
}
|
|
|
|
// Incr Generate "Update ... Set column = column + arg" statement
|
|
func (statement *Statement) Incr(column string, arg ...interface{}) *Statement {
|
|
if len(arg) > 0 {
|
|
statement.incrColumns.addParam(column, arg[0])
|
|
} else {
|
|
statement.incrColumns.addParam(column, 1)
|
|
}
|
|
return statement
|
|
}
|
|
|
|
// Decr Generate "Update ... Set column = column - arg" statement
|
|
func (statement *Statement) Decr(column string, arg ...interface{}) *Statement {
|
|
if len(arg) > 0 {
|
|
statement.decrColumns.addParam(column, arg[0])
|
|
} else {
|
|
statement.decrColumns.addParam(column, 1)
|
|
}
|
|
return statement
|
|
}
|
|
|
|
// SetExpr Generate "Update ... Set column = {expression}" statement
|
|
func (statement *Statement) SetExpr(column string, expression interface{}) *Statement {
|
|
statement.exprColumns.addParam(column, expression)
|
|
return statement
|
|
}
|
|
|
|
func (statement *Statement) col2NewColsWithQuote(columns ...string) []string {
|
|
newColumns := make([]string, 0)
|
|
quotes := append(strings.Split(statement.Engine.Quote(""), ""), "`")
|
|
for _, col := range columns {
|
|
newColumns = append(newColumns, statement.Engine.Quote(eraseAny(col, quotes...)))
|
|
}
|
|
return newColumns
|
|
}
|
|
|
|
func (statement *Statement) colmap2NewColsWithQuote() []string {
|
|
newColumns := make([]string, len(statement.columnMap), len(statement.columnMap))
|
|
copy(newColumns, statement.columnMap)
|
|
for i := 0; i < len(statement.columnMap); i++ {
|
|
newColumns[i] = statement.Engine.Quote(newColumns[i])
|
|
}
|
|
return newColumns
|
|
}
|
|
|
|
// Distinct generates "DISTINCT col1, col2 " statement
|
|
func (statement *Statement) Distinct(columns ...string) *Statement {
|
|
statement.IsDistinct = true
|
|
statement.Cols(columns...)
|
|
return statement
|
|
}
|
|
|
|
// ForUpdate generates "SELECT ... FOR UPDATE" statement
|
|
func (statement *Statement) ForUpdate() *Statement {
|
|
statement.IsForUpdate = true
|
|
return statement
|
|
}
|
|
|
|
// Select replace select
|
|
func (statement *Statement) Select(str string) *Statement {
|
|
statement.selectStr = str
|
|
return statement
|
|
}
|
|
|
|
// Cols generate "col1, col2" statement
|
|
func (statement *Statement) Cols(columns ...string) *Statement {
|
|
cols := col2NewCols(columns...)
|
|
for _, nc := range cols {
|
|
statement.columnMap.add(nc)
|
|
}
|
|
|
|
newColumns := statement.colmap2NewColsWithQuote()
|
|
|
|
statement.ColumnStr = strings.Join(newColumns, ", ")
|
|
statement.ColumnStr = strings.Replace(statement.ColumnStr, statement.Engine.quote("*"), "*", -1)
|
|
return statement
|
|
}
|
|
|
|
// AllCols update use only: update all columns
|
|
func (statement *Statement) AllCols() *Statement {
|
|
statement.useAllCols = true
|
|
return statement
|
|
}
|
|
|
|
// MustCols update use only: must update columns
|
|
func (statement *Statement) MustCols(columns ...string) *Statement {
|
|
newColumns := col2NewCols(columns...)
|
|
for _, nc := range newColumns {
|
|
statement.mustColumnMap[strings.ToLower(nc)] = true
|
|
}
|
|
return statement
|
|
}
|
|
|
|
// UseBool indicates that use bool fields as update contents and query contiditions
|
|
func (statement *Statement) UseBool(columns ...string) *Statement {
|
|
if len(columns) > 0 {
|
|
statement.MustCols(columns...)
|
|
} else {
|
|
statement.allUseBool = true
|
|
}
|
|
return statement
|
|
}
|
|
|
|
// Omit do not use the columns
|
|
func (statement *Statement) Omit(columns ...string) {
|
|
newColumns := col2NewCols(columns...)
|
|
for _, nc := range newColumns {
|
|
statement.omitColumnMap = append(statement.omitColumnMap, nc)
|
|
}
|
|
statement.OmitStr = statement.Engine.Quote(strings.Join(newColumns, statement.Engine.Quote(", ")))
|
|
}
|
|
|
|
// Nullable Update use only: update columns to null when value is nullable and zero-value
|
|
func (statement *Statement) Nullable(columns ...string) {
|
|
newColumns := col2NewCols(columns...)
|
|
for _, nc := range newColumns {
|
|
statement.nullableMap[strings.ToLower(nc)] = true
|
|
}
|
|
}
|
|
|
|
// Top generate LIMIT limit statement
|
|
func (statement *Statement) Top(limit int) *Statement {
|
|
statement.Limit(limit)
|
|
return statement
|
|
}
|
|
|
|
// Limit generate LIMIT start, limit statement
|
|
func (statement *Statement) Limit(limit int, start ...int) *Statement {
|
|
statement.LimitN = limit
|
|
if len(start) > 0 {
|
|
statement.Start = start[0]
|
|
}
|
|
return statement
|
|
}
|
|
|
|
// OrderBy generate "Order By order" statement
|
|
func (statement *Statement) OrderBy(order string) *Statement {
|
|
if len(statement.OrderStr) > 0 {
|
|
statement.OrderStr += ", "
|
|
}
|
|
statement.OrderStr += order
|
|
return statement
|
|
}
|
|
|
|
// Desc generate `ORDER BY xx DESC`
|
|
func (statement *Statement) Desc(colNames ...string) *Statement {
|
|
var buf strings.Builder
|
|
if len(statement.OrderStr) > 0 {
|
|
fmt.Fprint(&buf, statement.OrderStr, ", ")
|
|
}
|
|
newColNames := statement.col2NewColsWithQuote(colNames...)
|
|
fmt.Fprintf(&buf, "%v DESC", strings.Join(newColNames, " DESC, "))
|
|
statement.OrderStr = buf.String()
|
|
return statement
|
|
}
|
|
|
|
// Asc provide asc order by query condition, the input parameters are columns.
|
|
func (statement *Statement) Asc(colNames ...string) *Statement {
|
|
var buf strings.Builder
|
|
if len(statement.OrderStr) > 0 {
|
|
fmt.Fprint(&buf, statement.OrderStr, ", ")
|
|
}
|
|
newColNames := statement.col2NewColsWithQuote(colNames...)
|
|
fmt.Fprintf(&buf, "%v ASC", strings.Join(newColNames, " ASC, "))
|
|
statement.OrderStr = buf.String()
|
|
return statement
|
|
}
|
|
|
|
// Table tempororily set table name, the parameter could be a string or a pointer of struct
|
|
func (statement *Statement) Table(tableNameOrBean interface{}) *Statement {
|
|
v := rValue(tableNameOrBean)
|
|
t := v.Type()
|
|
if t.Kind() == reflect.Struct {
|
|
var err error
|
|
statement.RefTable, err = statement.Engine.autoMapType(v)
|
|
if err != nil {
|
|
statement.Engine.logger.Error(err)
|
|
return statement
|
|
}
|
|
}
|
|
|
|
statement.AltTableName = statement.Engine.TableName(tableNameOrBean, true)
|
|
return statement
|
|
}
|
|
|
|
// Join The joinOP should be one of INNER, LEFT OUTER, CROSS etc - this will be prepended to JOIN
|
|
func (statement *Statement) Join(joinOP string, tablename interface{}, condition string, args ...interface{}) *Statement {
|
|
var buf strings.Builder
|
|
if len(statement.JoinStr) > 0 {
|
|
fmt.Fprintf(&buf, "%v %v JOIN ", statement.JoinStr, joinOP)
|
|
} else {
|
|
fmt.Fprintf(&buf, "%v JOIN ", joinOP)
|
|
}
|
|
|
|
switch tp := tablename.(type) {
|
|
case builder.Builder:
|
|
subSQL, subQueryArgs, err := tp.ToSQL()
|
|
if err != nil {
|
|
statement.lastError = err
|
|
return statement
|
|
}
|
|
tbs := strings.Split(tp.TableName(), ".")
|
|
quotes := append(strings.Split(statement.Engine.Quote(""), ""), "`")
|
|
|
|
var aliasName = strings.Trim(tbs[len(tbs)-1], strings.Join(quotes, ""))
|
|
fmt.Fprintf(&buf, "(%s) %s ON %v", subSQL, aliasName, condition)
|
|
statement.joinArgs = append(statement.joinArgs, subQueryArgs...)
|
|
case *builder.Builder:
|
|
subSQL, subQueryArgs, err := tp.ToSQL()
|
|
if err != nil {
|
|
statement.lastError = err
|
|
return statement
|
|
}
|
|
tbs := strings.Split(tp.TableName(), ".")
|
|
quotes := append(strings.Split(statement.Engine.Quote(""), ""), "`")
|
|
|
|
var aliasName = strings.Trim(tbs[len(tbs)-1], strings.Join(quotes, ""))
|
|
fmt.Fprintf(&buf, "(%s) %s ON %v", subSQL, aliasName, condition)
|
|
statement.joinArgs = append(statement.joinArgs, subQueryArgs...)
|
|
default:
|
|
tbName := statement.Engine.TableName(tablename, true)
|
|
fmt.Fprintf(&buf, "%s ON %v", tbName, condition)
|
|
}
|
|
|
|
statement.JoinStr = buf.String()
|
|
statement.joinArgs = append(statement.joinArgs, args...)
|
|
return statement
|
|
}
|
|
|
|
// GroupBy generate "Group By keys" statement
|
|
func (statement *Statement) GroupBy(keys string) *Statement {
|
|
statement.GroupByStr = keys
|
|
return statement
|
|
}
|
|
|
|
// Having generate "Having conditions" statement
|
|
func (statement *Statement) Having(conditions string) *Statement {
|
|
statement.HavingStr = fmt.Sprintf("HAVING %v", conditions)
|
|
return statement
|
|
}
|
|
|
|
// Unscoped always disable struct tag "deleted"
|
|
func (statement *Statement) Unscoped() *Statement {
|
|
statement.unscoped = true
|
|
return statement
|
|
}
|
|
|
|
func (statement *Statement) genColumnStr() string {
|
|
if statement.RefTable == nil {
|
|
return ""
|
|
}
|
|
|
|
var buf strings.Builder
|
|
columns := statement.RefTable.Columns()
|
|
|
|
for _, col := range columns {
|
|
if statement.omitColumnMap.contain(col.Name) {
|
|
continue
|
|
}
|
|
|
|
if len(statement.columnMap) > 0 && !statement.columnMap.contain(col.Name) {
|
|
continue
|
|
}
|
|
|
|
if col.MapType == core.ONLYTODB {
|
|
continue
|
|
}
|
|
|
|
if buf.Len() != 0 {
|
|
buf.WriteString(", ")
|
|
}
|
|
|
|
if statement.JoinStr != "" {
|
|
if statement.TableAlias != "" {
|
|
buf.WriteString(statement.TableAlias)
|
|
} else {
|
|
buf.WriteString(statement.TableName())
|
|
}
|
|
|
|
buf.WriteString(".")
|
|
}
|
|
|
|
statement.Engine.QuoteTo(&buf, col.Name)
|
|
}
|
|
|
|
return buf.String()
|
|
}
|
|
|
|
func (statement *Statement) genCreateTableSQL() string {
|
|
return statement.Engine.dialect.CreateTableSql(statement.RefTable, statement.TableName(),
|
|
statement.StoreEngine, statement.Charset)
|
|
}
|
|
|
|
func (statement *Statement) genIndexSQL() []string {
|
|
var sqls []string
|
|
tbName := statement.TableName()
|
|
for _, index := range statement.RefTable.Indexes {
|
|
if index.Type == core.IndexType {
|
|
sql := statement.Engine.dialect.CreateIndexSql(tbName, index)
|
|
/*idxTBName := strings.Replace(tbName, ".", "_", -1)
|
|
idxTBName = strings.Replace(idxTBName, `"`, "", -1)
|
|
sql := fmt.Sprintf("CREATE INDEX %v ON %v (%v);", quote(indexName(idxTBName, idxName)),
|
|
quote(tbName), quote(strings.Join(index.Cols, quote(","))))*/
|
|
sqls = append(sqls, sql)
|
|
}
|
|
}
|
|
return sqls
|
|
}
|
|
|
|
func uniqueName(tableName, uqeName string) string {
|
|
return fmt.Sprintf("UQE_%v_%v", tableName, uqeName)
|
|
}
|
|
|
|
func (statement *Statement) genUniqueSQL() []string {
|
|
var sqls []string
|
|
tbName := statement.TableName()
|
|
for _, index := range statement.RefTable.Indexes {
|
|
if index.Type == core.UniqueType {
|
|
sql := statement.Engine.dialect.CreateIndexSql(tbName, index)
|
|
sqls = append(sqls, sql)
|
|
}
|
|
}
|
|
return sqls
|
|
}
|
|
|
|
func (statement *Statement) genDelIndexSQL() []string {
|
|
var sqls []string
|
|
tbName := statement.TableName()
|
|
idxPrefixName := strings.Replace(tbName, `"`, "", -1)
|
|
idxPrefixName = strings.Replace(idxPrefixName, `.`, "_", -1)
|
|
for idxName, index := range statement.RefTable.Indexes {
|
|
var rIdxName string
|
|
if index.Type == core.UniqueType {
|
|
rIdxName = uniqueName(idxPrefixName, idxName)
|
|
} else if index.Type == core.IndexType {
|
|
rIdxName = indexName(idxPrefixName, idxName)
|
|
}
|
|
sql := fmt.Sprintf("DROP INDEX %v", statement.Engine.Quote(statement.Engine.TableName(rIdxName, true)))
|
|
if statement.Engine.dialect.IndexOnTable() {
|
|
sql += fmt.Sprintf(" ON %v", statement.Engine.Quote(tbName))
|
|
}
|
|
sqls = append(sqls, sql)
|
|
}
|
|
return sqls
|
|
}
|
|
|
|
func (statement *Statement) genAddColumnStr(col *core.Column) (string, []interface{}) {
|
|
quote := statement.Engine.Quote
|
|
sql := fmt.Sprintf("ALTER TABLE %v ADD %v", quote(statement.TableName()),
|
|
col.String(statement.Engine.dialect))
|
|
if statement.Engine.dialect.DBType() == core.MYSQL && len(col.Comment) > 0 {
|
|
sql += " COMMENT '" + col.Comment + "'"
|
|
}
|
|
sql += ";"
|
|
return sql, []interface{}{}
|
|
}
|
|
|
|
func (statement *Statement) buildConds(table *core.Table, bean interface{}, includeVersion bool, includeUpdated bool, includeNil bool, includeAutoIncr bool, addedTableName bool) (builder.Cond, error) {
|
|
return statement.Engine.buildConds(table, bean, includeVersion, includeUpdated, includeNil, includeAutoIncr, statement.allUseBool, statement.useAllCols,
|
|
statement.unscoped, statement.mustColumnMap, statement.TableName(), statement.TableAlias, addedTableName)
|
|
}
|
|
|
|
func (statement *Statement) mergeConds(bean interface{}) error {
|
|
if !statement.noAutoCondition {
|
|
var addedTableName = (len(statement.JoinStr) > 0)
|
|
autoCond, err := statement.buildConds(statement.RefTable, bean, true, true, false, true, addedTableName)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
statement.cond = statement.cond.And(autoCond)
|
|
}
|
|
|
|
if err := statement.processIDParam(); err != nil {
|
|
return err
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func (statement *Statement) genConds(bean interface{}) (string, []interface{}, error) {
|
|
if err := statement.mergeConds(bean); err != nil {
|
|
return "", nil, err
|
|
}
|
|
|
|
return builder.ToSQL(statement.cond)
|
|
}
|
|
|
|
func (statement *Statement) genGetSQL(bean interface{}) (string, []interface{}, error) {
|
|
v := rValue(bean)
|
|
isStruct := v.Kind() == reflect.Struct
|
|
if isStruct {
|
|
statement.setRefBean(bean)
|
|
}
|
|
|
|
var columnStr = statement.ColumnStr
|
|
if len(statement.selectStr) > 0 {
|
|
columnStr = statement.selectStr
|
|
} else {
|
|
// TODO: always generate column names, not use * even if join
|
|
if len(statement.JoinStr) == 0 {
|
|
if len(columnStr) == 0 {
|
|
if len(statement.GroupByStr) > 0 {
|
|
columnStr = statement.Engine.quoteColumns(statement.GroupByStr)
|
|
} else {
|
|
columnStr = statement.genColumnStr()
|
|
}
|
|
}
|
|
} else {
|
|
if len(columnStr) == 0 {
|
|
if len(statement.GroupByStr) > 0 {
|
|
columnStr = statement.Engine.quoteColumns(statement.GroupByStr)
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if len(columnStr) == 0 {
|
|
columnStr = "*"
|
|
}
|
|
|
|
if isStruct {
|
|
if err := statement.mergeConds(bean); err != nil {
|
|
return "", nil, err
|
|
}
|
|
} else {
|
|
if err := statement.processIDParam(); err != nil {
|
|
return "", nil, err
|
|
}
|
|
}
|
|
condSQL, condArgs, err := builder.ToSQL(statement.cond)
|
|
if err != nil {
|
|
return "", nil, err
|
|
}
|
|
|
|
sqlStr, err := statement.genSelectSQL(columnStr, condSQL, true, true)
|
|
if err != nil {
|
|
return "", nil, err
|
|
}
|
|
|
|
return sqlStr, append(statement.joinArgs, condArgs...), nil
|
|
}
|
|
|
|
func (statement *Statement) genCountSQL(beans ...interface{}) (string, []interface{}, error) {
|
|
var condSQL string
|
|
var condArgs []interface{}
|
|
var err error
|
|
if len(beans) > 0 {
|
|
statement.setRefBean(beans[0])
|
|
condSQL, condArgs, err = statement.genConds(beans[0])
|
|
} else {
|
|
condSQL, condArgs, err = builder.ToSQL(statement.cond)
|
|
}
|
|
if err != nil {
|
|
return "", nil, err
|
|
}
|
|
|
|
var selectSQL = statement.selectStr
|
|
if len(selectSQL) <= 0 {
|
|
if statement.IsDistinct {
|
|
selectSQL = fmt.Sprintf("count(DISTINCT %s)", statement.ColumnStr)
|
|
} else {
|
|
selectSQL = "count(*)"
|
|
}
|
|
}
|
|
sqlStr, err := statement.genSelectSQL(selectSQL, condSQL, false, false)
|
|
if err != nil {
|
|
return "", nil, err
|
|
}
|
|
|
|
return sqlStr, append(statement.joinArgs, condArgs...), nil
|
|
}
|
|
|
|
func (statement *Statement) genSumSQL(bean interface{}, columns ...string) (string, []interface{}, error) {
|
|
statement.setRefBean(bean)
|
|
|
|
var sumStrs = make([]string, 0, len(columns))
|
|
for _, colName := range columns {
|
|
if !strings.Contains(colName, " ") && !strings.Contains(colName, "(") {
|
|
colName = statement.Engine.Quote(colName)
|
|
}
|
|
sumStrs = append(sumStrs, fmt.Sprintf("COALESCE(sum(%s),0)", colName))
|
|
}
|
|
sumSelect := strings.Join(sumStrs, ", ")
|
|
|
|
condSQL, condArgs, err := statement.genConds(bean)
|
|
if err != nil {
|
|
return "", nil, err
|
|
}
|
|
|
|
sqlStr, err := statement.genSelectSQL(sumSelect, condSQL, true, true)
|
|
if err != nil {
|
|
return "", nil, err
|
|
}
|
|
|
|
return sqlStr, append(statement.joinArgs, condArgs...), nil
|
|
}
|
|
|
|
func (statement *Statement) genSelectSQL(columnStr, condSQL string, needLimit, needOrderBy bool) (string, error) {
|
|
var (
|
|
distinct string
|
|
dialect = statement.Engine.Dialect()
|
|
quote = statement.Engine.Quote
|
|
fromStr = " FROM "
|
|
top, mssqlCondi, whereStr string
|
|
)
|
|
if statement.IsDistinct && !strings.HasPrefix(columnStr, "count") {
|
|
distinct = "DISTINCT "
|
|
}
|
|
if len(condSQL) > 0 {
|
|
whereStr = " WHERE " + condSQL
|
|
}
|
|
|
|
if dialect.DBType() == core.MSSQL && strings.Contains(statement.TableName(), "..") {
|
|
fromStr += statement.TableName()
|
|
} else {
|
|
fromStr += quote(statement.TableName())
|
|
}
|
|
|
|
if statement.TableAlias != "" {
|
|
if dialect.DBType() == core.ORACLE {
|
|
fromStr += " " + quote(statement.TableAlias)
|
|
} else {
|
|
fromStr += " AS " + quote(statement.TableAlias)
|
|
}
|
|
}
|
|
if statement.JoinStr != "" {
|
|
fromStr = fmt.Sprintf("%v %v", fromStr, statement.JoinStr)
|
|
}
|
|
|
|
if dialect.DBType() == core.MSSQL {
|
|
if statement.LimitN > 0 {
|
|
top = fmt.Sprintf("TOP %d ", statement.LimitN)
|
|
}
|
|
if statement.Start > 0 {
|
|
var column string
|
|
if len(statement.RefTable.PKColumns()) == 0 {
|
|
for _, index := range statement.RefTable.Indexes {
|
|
if len(index.Cols) == 1 {
|
|
column = index.Cols[0]
|
|
break
|
|
}
|
|
}
|
|
if len(column) == 0 {
|
|
column = statement.RefTable.ColumnsSeq()[0]
|
|
}
|
|
} else {
|
|
column = statement.RefTable.PKColumns()[0].Name
|
|
}
|
|
if statement.needTableName() {
|
|
if len(statement.TableAlias) > 0 {
|
|
column = statement.TableAlias + "." + column
|
|
} else {
|
|
column = statement.TableName() + "." + column
|
|
}
|
|
}
|
|
|
|
var orderStr string
|
|
if needOrderBy && len(statement.OrderStr) > 0 {
|
|
orderStr = " ORDER BY " + statement.OrderStr
|
|
}
|
|
|
|
var groupStr string
|
|
if len(statement.GroupByStr) > 0 {
|
|
groupStr = " GROUP BY " + statement.GroupByStr
|
|
}
|
|
mssqlCondi = fmt.Sprintf("(%s NOT IN (SELECT TOP %d %s%s%s%s%s))",
|
|
column, statement.Start, column, fromStr, whereStr, orderStr, groupStr)
|
|
}
|
|
}
|
|
|
|
var buf strings.Builder
|
|
fmt.Fprintf(&buf, "SELECT %v%v%v%v%v", distinct, top, columnStr, fromStr, whereStr)
|
|
if len(mssqlCondi) > 0 {
|
|
if len(whereStr) > 0 {
|
|
fmt.Fprint(&buf, " AND ", mssqlCondi)
|
|
} else {
|
|
fmt.Fprint(&buf, " WHERE ", mssqlCondi)
|
|
}
|
|
}
|
|
|
|
if statement.GroupByStr != "" {
|
|
fmt.Fprint(&buf, " GROUP BY ", statement.GroupByStr)
|
|
}
|
|
if statement.HavingStr != "" {
|
|
fmt.Fprint(&buf, " ", statement.HavingStr)
|
|
}
|
|
if needOrderBy && statement.OrderStr != "" {
|
|
fmt.Fprint(&buf, " ORDER BY ", statement.OrderStr)
|
|
}
|
|
if needLimit {
|
|
if dialect.DBType() != core.MSSQL && dialect.DBType() != core.ORACLE {
|
|
if statement.Start > 0 {
|
|
fmt.Fprintf(&buf, " LIMIT %v OFFSET %v", statement.LimitN, statement.Start)
|
|
} else if statement.LimitN > 0 {
|
|
fmt.Fprint(&buf, " LIMIT ", statement.LimitN)
|
|
}
|
|
} else if dialect.DBType() == core.ORACLE {
|
|
if statement.Start != 0 || statement.LimitN != 0 {
|
|
oldString := buf.String()
|
|
buf.Reset()
|
|
rawColStr := columnStr
|
|
if rawColStr == "*" {
|
|
rawColStr = "at.*"
|
|
}
|
|
fmt.Fprintf(&buf, "SELECT %v FROM (SELECT %v,ROWNUM RN FROM (%v) at WHERE ROWNUM <= %d) aat WHERE RN > %d",
|
|
columnStr, rawColStr, oldString, statement.Start+statement.LimitN, statement.Start)
|
|
}
|
|
}
|
|
}
|
|
if statement.IsForUpdate {
|
|
return dialect.ForUpdateSql(buf.String()), nil
|
|
}
|
|
|
|
return buf.String(), nil
|
|
}
|
|
|
|
func (statement *Statement) processIDParam() error {
|
|
if statement.idParam == nil || statement.RefTable == nil {
|
|
return nil
|
|
}
|
|
|
|
if len(statement.RefTable.PrimaryKeys) != len(*statement.idParam) {
|
|
return fmt.Errorf("ID condition is error, expect %d primarykeys, there are %d",
|
|
len(statement.RefTable.PrimaryKeys),
|
|
len(*statement.idParam),
|
|
)
|
|
}
|
|
|
|
for i, col := range statement.RefTable.PKColumns() {
|
|
var colName = statement.colName(col, statement.TableName())
|
|
statement.cond = statement.cond.And(builder.Eq{colName: (*(statement.idParam))[i]})
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func (statement *Statement) joinColumns(cols []*core.Column, includeTableName bool) string {
|
|
var colnames = make([]string, len(cols))
|
|
for i, col := range cols {
|
|
if includeTableName {
|
|
colnames[i] = statement.Engine.Quote(statement.TableName()) +
|
|
"." + statement.Engine.Quote(col.Name)
|
|
} else {
|
|
colnames[i] = statement.Engine.Quote(col.Name)
|
|
}
|
|
}
|
|
return strings.Join(colnames, ", ")
|
|
}
|
|
|
|
func (statement *Statement) convertIDSQL(sqlStr string) string {
|
|
if statement.RefTable != nil {
|
|
cols := statement.RefTable.PKColumns()
|
|
if len(cols) == 0 {
|
|
return ""
|
|
}
|
|
|
|
colstrs := statement.joinColumns(cols, false)
|
|
sqls := splitNNoCase(sqlStr, " from ", 2)
|
|
if len(sqls) != 2 {
|
|
return ""
|
|
}
|
|
|
|
var top string
|
|
if statement.LimitN > 0 && statement.Engine.dialect.DBType() == core.MSSQL {
|
|
top = fmt.Sprintf("TOP %d ", statement.LimitN)
|
|
}
|
|
|
|
newsql := fmt.Sprintf("SELECT %s%s FROM %v", top, colstrs, sqls[1])
|
|
return newsql
|
|
}
|
|
return ""
|
|
}
|
|
|
|
func (statement *Statement) convertUpdateSQL(sqlStr string) (string, string) {
|
|
if statement.RefTable == nil || len(statement.RefTable.PrimaryKeys) != 1 {
|
|
return "", ""
|
|
}
|
|
|
|
colstrs := statement.joinColumns(statement.RefTable.PKColumns(), true)
|
|
sqls := splitNNoCase(sqlStr, "where", 2)
|
|
if len(sqls) != 2 {
|
|
if len(sqls) == 1 {
|
|
return sqls[0], fmt.Sprintf("SELECT %v FROM %v",
|
|
colstrs, statement.Engine.Quote(statement.TableName()))
|
|
}
|
|
return "", ""
|
|
}
|
|
|
|
var whereStr = sqls[1]
|
|
|
|
// TODO: for postgres only, if any other database?
|
|
var paraStr string
|
|
if statement.Engine.dialect.DBType() == core.POSTGRES {
|
|
paraStr = "$"
|
|
} else if statement.Engine.dialect.DBType() == core.MSSQL {
|
|
paraStr = ":"
|
|
}
|
|
|
|
if paraStr != "" {
|
|
if strings.Contains(sqls[1], paraStr) {
|
|
dollers := strings.Split(sqls[1], paraStr)
|
|
whereStr = dollers[0]
|
|
for i, c := range dollers[1:] {
|
|
ccs := strings.SplitN(c, " ", 2)
|
|
whereStr += fmt.Sprintf(paraStr+"%v %v", i+1, ccs[1])
|
|
}
|
|
}
|
|
}
|
|
|
|
return sqls[0], fmt.Sprintf("SELECT %v FROM %v WHERE %v",
|
|
colstrs, statement.Engine.Quote(statement.TableName()),
|
|
whereStr)
|
|
}
|