mirror of
https://github.com/go-gitea/gitea
synced 2024-12-25 10:04:27 +00:00
463 lines
12 KiB
Go
Vendored
463 lines
12 KiB
Go
Vendored
// Copyright 2019 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 (
|
|
"errors"
|
|
"fmt"
|
|
"reflect"
|
|
"strings"
|
|
|
|
"xorm.io/builder"
|
|
"xorm.io/xorm/schemas"
|
|
)
|
|
|
|
// GenQuerySQL generate query SQL
|
|
func (statement *Statement) GenQuerySQL(sqlOrArgs ...interface{}) (string, []interface{}, error) {
|
|
if len(sqlOrArgs) > 0 {
|
|
return statement.ConvertSQLOrArgs(sqlOrArgs...)
|
|
}
|
|
|
|
if statement.RawSQL != "" {
|
|
return statement.GenRawSQL(), statement.RawParams, nil
|
|
}
|
|
|
|
if len(statement.TableName()) <= 0 {
|
|
return "", nil, ErrTableNotFound
|
|
}
|
|
|
|
var columnStr = statement.ColumnStr()
|
|
if len(statement.SelectStr) > 0 {
|
|
columnStr = statement.SelectStr
|
|
} else {
|
|
if statement.JoinStr == "" {
|
|
if columnStr == "" {
|
|
if statement.GroupByStr != "" {
|
|
columnStr = statement.quoteColumnStr(statement.GroupByStr)
|
|
} else {
|
|
columnStr = statement.genColumnStr()
|
|
}
|
|
}
|
|
} else {
|
|
if columnStr == "" {
|
|
if statement.GroupByStr != "" {
|
|
columnStr = statement.quoteColumnStr(statement.GroupByStr)
|
|
} else {
|
|
columnStr = "*"
|
|
}
|
|
}
|
|
}
|
|
if columnStr == "" {
|
|
columnStr = "*"
|
|
}
|
|
}
|
|
|
|
if err := statement.ProcessIDParam(); err != nil {
|
|
return "", nil, err
|
|
}
|
|
|
|
sqlStr, condArgs, err := statement.genSelectSQL(columnStr, true, true)
|
|
if err != nil {
|
|
return "", nil, err
|
|
}
|
|
args := append(statement.joinArgs, condArgs...)
|
|
|
|
// for mssql and use limit
|
|
qs := strings.Count(sqlStr, "?")
|
|
if len(args)*2 == qs {
|
|
args = append(args, args...)
|
|
}
|
|
|
|
return sqlStr, args, nil
|
|
}
|
|
|
|
// GenSumSQL generates sum SQL
|
|
func (statement *Statement) GenSumSQL(bean interface{}, columns ...string) (string, []interface{}, error) {
|
|
if statement.RawSQL != "" {
|
|
return statement.GenRawSQL(), statement.RawParams, nil
|
|
}
|
|
|
|
statement.SetRefBean(bean)
|
|
|
|
var sumStrs = make([]string, 0, len(columns))
|
|
for _, colName := range columns {
|
|
if !strings.Contains(colName, " ") && !strings.Contains(colName, "(") {
|
|
colName = statement.quote(colName)
|
|
} else {
|
|
colName = statement.ReplaceQuote(colName)
|
|
}
|
|
sumStrs = append(sumStrs, fmt.Sprintf("COALESCE(sum(%s),0)", colName))
|
|
}
|
|
sumSelect := strings.Join(sumStrs, ", ")
|
|
|
|
if err := statement.mergeConds(bean); err != nil {
|
|
return "", nil, err
|
|
}
|
|
|
|
sqlStr, condArgs, err := statement.genSelectSQL(sumSelect, true, true)
|
|
if err != nil {
|
|
return "", nil, err
|
|
}
|
|
|
|
return sqlStr, append(statement.joinArgs, condArgs...), nil
|
|
}
|
|
|
|
// GenGetSQL generates Get SQL
|
|
func (statement *Statement) GenGetSQL(bean interface{}) (string, []interface{}, error) {
|
|
var isStruct bool
|
|
if bean != nil {
|
|
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.quoteColumnStr(statement.GroupByStr)
|
|
} else {
|
|
columnStr = statement.genColumnStr()
|
|
}
|
|
}
|
|
} else {
|
|
if len(columnStr) == 0 {
|
|
if len(statement.GroupByStr) > 0 {
|
|
columnStr = statement.quoteColumnStr(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
|
|
}
|
|
}
|
|
|
|
sqlStr, condArgs, err := statement.genSelectSQL(columnStr, true, true)
|
|
if err != nil {
|
|
return "", nil, err
|
|
}
|
|
|
|
return sqlStr, append(statement.joinArgs, condArgs...), nil
|
|
}
|
|
|
|
// GenCountSQL generates the SQL for counting
|
|
func (statement *Statement) GenCountSQL(beans ...interface{}) (string, []interface{}, error) {
|
|
if statement.RawSQL != "" {
|
|
return statement.GenRawSQL(), statement.RawParams, nil
|
|
}
|
|
|
|
var condArgs []interface{}
|
|
var err error
|
|
if len(beans) > 0 {
|
|
statement.SetRefBean(beans[0])
|
|
if err := statement.mergeConds(beans[0]); 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 if statement.ColumnStr() != "" {
|
|
selectSQL = fmt.Sprintf("count(%s)", statement.ColumnStr())
|
|
} else {
|
|
selectSQL = "count(*)"
|
|
}
|
|
}
|
|
var subQuerySelect string
|
|
if statement.GroupByStr != "" {
|
|
subQuerySelect = statement.GroupByStr
|
|
} else {
|
|
subQuerySelect = selectSQL
|
|
}
|
|
|
|
sqlStr, condArgs, err := statement.genSelectSQL(subQuerySelect, false, false)
|
|
if err != nil {
|
|
return "", nil, err
|
|
}
|
|
|
|
if statement.GroupByStr != "" {
|
|
sqlStr = fmt.Sprintf("SELECT %s FROM (%s) sub", selectSQL, sqlStr)
|
|
}
|
|
|
|
return sqlStr, append(statement.joinArgs, condArgs...), nil
|
|
}
|
|
|
|
func (statement *Statement) genSelectSQL(columnStr string, needLimit, needOrderBy bool) (string, []interface{}, error) {
|
|
var (
|
|
distinct string
|
|
dialect = statement.dialect
|
|
quote = statement.quote
|
|
fromStr = " FROM "
|
|
top, mssqlCondi, whereStr string
|
|
)
|
|
if statement.IsDistinct && !strings.HasPrefix(columnStr, "count") {
|
|
distinct = "DISTINCT "
|
|
}
|
|
|
|
condSQL, condArgs, err := statement.GenCondSQL(statement.cond)
|
|
if err != nil {
|
|
return "", nil, err
|
|
}
|
|
if len(condSQL) > 0 {
|
|
whereStr = " WHERE " + condSQL
|
|
}
|
|
|
|
if dialect.URI().DBType == schemas.MSSQL && strings.Contains(statement.TableName(), "..") {
|
|
fromStr += statement.TableName()
|
|
} else {
|
|
fromStr += quote(statement.TableName())
|
|
}
|
|
|
|
if statement.TableAlias != "" {
|
|
if dialect.URI().DBType == schemas.ORACLE {
|
|
fromStr += " " + quote(statement.TableAlias)
|
|
} else {
|
|
fromStr += " AS " + quote(statement.TableAlias)
|
|
}
|
|
}
|
|
if statement.JoinStr != "" {
|
|
fromStr = fmt.Sprintf("%v %v", fromStr, statement.JoinStr)
|
|
}
|
|
|
|
pLimitN := statement.LimitN
|
|
if dialect.URI().DBType == schemas.MSSQL {
|
|
if pLimitN != nil {
|
|
LimitNValue := *pLimitN
|
|
top = fmt.Sprintf("TOP %d ", LimitNValue)
|
|
}
|
|
if statement.Start > 0 {
|
|
if statement.RefTable == nil {
|
|
return "", nil, errors.New("Unsupported query limit without reference table")
|
|
}
|
|
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.URI().DBType != schemas.MSSQL && dialect.URI().DBType != schemas.ORACLE {
|
|
if statement.Start > 0 {
|
|
if pLimitN != nil {
|
|
fmt.Fprintf(&buf, " LIMIT %v OFFSET %v", *pLimitN, statement.Start)
|
|
} else {
|
|
fmt.Fprintf(&buf, "LIMIT 0 OFFSET %v", statement.Start)
|
|
}
|
|
} else if pLimitN != nil {
|
|
fmt.Fprint(&buf, " LIMIT ", *pLimitN)
|
|
}
|
|
} else if dialect.URI().DBType == schemas.ORACLE {
|
|
if statement.Start != 0 && pLimitN != nil {
|
|
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+*pLimitN, statement.Start)
|
|
}
|
|
}
|
|
}
|
|
if statement.IsForUpdate {
|
|
return dialect.ForUpdateSQL(buf.String()), condArgs, nil
|
|
}
|
|
|
|
return buf.String(), condArgs, nil
|
|
}
|
|
|
|
// GenExistSQL generates Exist SQL
|
|
func (statement *Statement) GenExistSQL(bean ...interface{}) (string, []interface{}, error) {
|
|
if statement.RawSQL != "" {
|
|
return statement.GenRawSQL(), statement.RawParams, nil
|
|
}
|
|
|
|
var sqlStr string
|
|
var args []interface{}
|
|
var joinStr string
|
|
var err error
|
|
var b interface{}
|
|
if len(bean) > 0 {
|
|
b = bean[0]
|
|
beanValue := reflect.ValueOf(bean[0])
|
|
if beanValue.Kind() != reflect.Ptr {
|
|
return "", nil, errors.New("needs a pointer")
|
|
}
|
|
|
|
if beanValue.Elem().Kind() == reflect.Struct {
|
|
if err := statement.SetRefBean(bean[0]); err != nil {
|
|
return "", nil, err
|
|
}
|
|
}
|
|
}
|
|
tableName := statement.TableName()
|
|
if len(tableName) <= 0 {
|
|
return "", nil, ErrTableNotFound
|
|
}
|
|
if statement.RefTable == nil {
|
|
tableName = statement.quote(tableName)
|
|
if len(statement.JoinStr) > 0 {
|
|
joinStr = statement.JoinStr
|
|
}
|
|
|
|
if statement.Conds().IsValid() {
|
|
condSQL, condArgs, err := statement.GenCondSQL(statement.Conds())
|
|
if err != nil {
|
|
return "", nil, err
|
|
}
|
|
|
|
if statement.dialect.URI().DBType == schemas.MSSQL {
|
|
sqlStr = fmt.Sprintf("SELECT TOP 1 * FROM %s %s WHERE %s", tableName, joinStr, condSQL)
|
|
} else if statement.dialect.URI().DBType == schemas.ORACLE {
|
|
sqlStr = fmt.Sprintf("SELECT * FROM %s WHERE (%s) %s AND ROWNUM=1", tableName, joinStr, condSQL)
|
|
} else {
|
|
sqlStr = fmt.Sprintf("SELECT * FROM %s %s WHERE %s LIMIT 1", tableName, joinStr, condSQL)
|
|
}
|
|
args = condArgs
|
|
} else {
|
|
if statement.dialect.URI().DBType == schemas.MSSQL {
|
|
sqlStr = fmt.Sprintf("SELECT TOP 1 * FROM %s %s", tableName, joinStr)
|
|
} else if statement.dialect.URI().DBType == schemas.ORACLE {
|
|
sqlStr = fmt.Sprintf("SELECT * FROM %s %s WHERE ROWNUM=1", tableName, joinStr)
|
|
} else {
|
|
sqlStr = fmt.Sprintf("SELECT * FROM %s %s LIMIT 1", tableName, joinStr)
|
|
}
|
|
args = []interface{}{}
|
|
}
|
|
} else {
|
|
statement.Limit(1)
|
|
sqlStr, args, err = statement.GenGetSQL(b)
|
|
if err != nil {
|
|
return "", nil, err
|
|
}
|
|
}
|
|
|
|
return sqlStr, args, nil
|
|
}
|
|
|
|
// GenFindSQL generates Find SQL
|
|
func (statement *Statement) GenFindSQL(autoCond builder.Cond) (string, []interface{}, error) {
|
|
if statement.RawSQL != "" {
|
|
return statement.GenRawSQL(), statement.RawParams, nil
|
|
}
|
|
|
|
var sqlStr string
|
|
var args []interface{}
|
|
var err error
|
|
|
|
if len(statement.TableName()) <= 0 {
|
|
return "", nil, ErrTableNotFound
|
|
}
|
|
|
|
var columnStr = statement.ColumnStr()
|
|
if len(statement.SelectStr) > 0 {
|
|
columnStr = statement.SelectStr
|
|
} else {
|
|
if statement.JoinStr == "" {
|
|
if columnStr == "" {
|
|
if statement.GroupByStr != "" {
|
|
columnStr = statement.quoteColumnStr(statement.GroupByStr)
|
|
} else {
|
|
columnStr = statement.genColumnStr()
|
|
}
|
|
}
|
|
} else {
|
|
if columnStr == "" {
|
|
if statement.GroupByStr != "" {
|
|
columnStr = statement.quoteColumnStr(statement.GroupByStr)
|
|
} else {
|
|
columnStr = "*"
|
|
}
|
|
}
|
|
}
|
|
if columnStr == "" {
|
|
columnStr = "*"
|
|
}
|
|
}
|
|
|
|
statement.cond = statement.cond.And(autoCond)
|
|
|
|
sqlStr, condArgs, err := statement.genSelectSQL(columnStr, true, true)
|
|
if err != nil {
|
|
return "", nil, err
|
|
}
|
|
args = append(statement.joinArgs, condArgs...)
|
|
// for mssql and use limit
|
|
qs := strings.Count(sqlStr, "?")
|
|
if len(args)*2 == qs {
|
|
args = append(args, args...)
|
|
}
|
|
|
|
return sqlStr, args, nil
|
|
}
|