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// Copyright 2016 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"
"fmt"
"reflect"
"strconv"
"time"
"github.com/go-xorm/core"
)
func (session *Session) query(sqlStr string, paramStr ...interface{}) ([]map[string][]byte, error) {
session.queryPreprocess(&sqlStr, paramStr...)
if session.IsAutoCommit {
return session.innerQuery2(sqlStr, paramStr...)
}
return session.txQuery(session.Tx, sqlStr, paramStr...)
}
func (session *Session) txQuery(tx *core.Tx, sqlStr string, params ...interface{}) ([]map[string][]byte, error) {
rows, err := tx.Query(sqlStr, params...)
if err != nil {
return nil, err
}
defer rows.Close()
return rows2maps(rows)
}
func (session *Session) innerQuery(sqlStr string, params ...interface{}) (*core.Stmt, *core.Rows, error) {
var callback func() (*core.Stmt, *core.Rows, error)
if session.prepareStmt {
callback = func() (*core.Stmt, *core.Rows, error) {
stmt, err := session.doPrepare(sqlStr)
if err != nil {
return nil, nil, err
}
rows, err := stmt.Query(params...)
if err != nil {
return nil, nil, err
}
return stmt, rows, nil
}
} else {
callback = func() (*core.Stmt, *core.Rows, error) {
rows, err := session.DB().Query(sqlStr, params...)
if err != nil {
return nil, nil, err
}
return nil, rows, err
}
}
stmt, rows, err := session.Engine.logSQLQueryTime(sqlStr, params, callback)
if err != nil {
return nil, nil, err
}
return stmt, rows, nil
}
func rows2maps(rows *core.Rows) (resultsSlice []map[string][]byte, err error) {
fields, err := rows.Columns()
if err != nil {
return nil, err
}
for rows.Next() {
result, err := row2map(rows, fields)
if err != nil {
return nil, err
}
resultsSlice = append(resultsSlice, result)
}
return resultsSlice, nil
}
func value2Bytes(rawValue *reflect.Value) (data []byte, err error) {
var str string
str, err = reflect2value(rawValue)
if err != nil {
return
}
data = []byte(str)
return
}
func row2map(rows *core.Rows, fields []string) (resultsMap map[string][]byte, err error) {
result := make(map[string][]byte)
scanResultContainers := make([]interface{}, len(fields))
for i := 0; i < len(fields); i++ {
var scanResultContainer interface{}
scanResultContainers[i] = &scanResultContainer
}
if err := rows.Scan(scanResultContainers...); err != nil {
return nil, err
}
for ii, key := range fields {
rawValue := reflect.Indirect(reflect.ValueOf(scanResultContainers[ii]))
//if row is null then ignore
if rawValue.Interface() == nil {
//fmt.Println("ignore ...", key, rawValue)
continue
}
if data, err := value2Bytes(&rawValue); err == nil {
result[key] = data
} else {
return nil, err // !nashtsai! REVIEW, should return err or just error log?
}
}
return result, nil
}
func (session *Session) innerQuery2(sqlStr string, params ...interface{}) ([]map[string][]byte, error) {
_, rows, err := session.innerQuery(sqlStr, params...)
if rows != nil {
defer rows.Close()
}
if err != nil {
return nil, err
}
return rows2maps(rows)
}
// Query runs a raw sql and return records as []map[string][]byte
func (session *Session) Query(sqlStr string, paramStr ...interface{}) ([]map[string][]byte, error) {
defer session.resetStatement()
if session.IsAutoClose {
defer session.Close()
}
return session.query(sqlStr, paramStr...)
}
func rows2Strings(rows *core.Rows) (resultsSlice []map[string]string, err error) {
fields, err := rows.Columns()
if err != nil {
return nil, err
}
for rows.Next() {
result, err := row2mapStr(rows, fields)
if err != nil {
return nil, err
}
resultsSlice = append(resultsSlice, result)
}
return resultsSlice, nil
}
func reflect2value(rawValue *reflect.Value) (str string, err error) {
aa := reflect.TypeOf((*rawValue).Interface())
vv := reflect.ValueOf((*rawValue).Interface())
switch aa.Kind() {
case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
str = strconv.FormatInt(vv.Int(), 10)
case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64:
str = strconv.FormatUint(vv.Uint(), 10)
case reflect.Float32, reflect.Float64:
str = strconv.FormatFloat(vv.Float(), 'f', -1, 64)
case reflect.String:
str = vv.String()
case reflect.Array, reflect.Slice:
switch aa.Elem().Kind() {
case reflect.Uint8:
data := rawValue.Interface().([]byte)
str = string(data)
default:
err = fmt.Errorf("Unsupported struct type %v", vv.Type().Name())
}
// time type
case reflect.Struct:
if aa.ConvertibleTo(core.TimeType) {
str = vv.Convert(core.TimeType).Interface().(time.Time).Format(time.RFC3339Nano)
} else {
err = fmt.Errorf("Unsupported struct type %v", vv.Type().Name())
}
case reflect.Bool:
str = strconv.FormatBool(vv.Bool())
case reflect.Complex128, reflect.Complex64:
str = fmt.Sprintf("%v", vv.Complex())
/* TODO: unsupported types below
case reflect.Map:
case reflect.Ptr:
case reflect.Uintptr:
case reflect.UnsafePointer:
case reflect.Chan, reflect.Func, reflect.Interface:
*/
default:
err = fmt.Errorf("Unsupported struct type %v", vv.Type().Name())
}
return
}
func value2String(rawValue *reflect.Value) (data string, err error) {
data, err = reflect2value(rawValue)
if err != nil {
return
}
return
}
func row2mapStr(rows *core.Rows, fields []string) (resultsMap map[string]string, err error) {
result := make(map[string]string)
scanResultContainers := make([]interface{}, len(fields))
for i := 0; i < len(fields); i++ {
var scanResultContainer interface{}
scanResultContainers[i] = &scanResultContainer
}
if err := rows.Scan(scanResultContainers...); err != nil {
return nil, err
}
for ii, key := range fields {
rawValue := reflect.Indirect(reflect.ValueOf(scanResultContainers[ii]))
//if row is null then ignore
if rawValue.Interface() == nil {
//fmt.Println("ignore ...", key, rawValue)
continue
}
if data, err := value2String(&rawValue); err == nil {
result[key] = data
} else {
return nil, err // !nashtsai! REVIEW, should return err or just error log?
}
}
return result, nil
}
func txQuery2(tx *core.Tx, sqlStr string, params ...interface{}) ([]map[string]string, error) {
rows, err := tx.Query(sqlStr, params...)
if err != nil {
return nil, err
}
defer rows.Close()
return rows2Strings(rows)
}
func query2(db *core.DB, sqlStr string, params ...interface{}) ([]map[string]string, error) {
rows, err := db.Query(sqlStr, params...)
if err != nil {
return nil, err
}
defer rows.Close()
return rows2Strings(rows)
}
// QueryString runs a raw sql and return records as []map[string]string
func (session *Session) QueryString(sqlStr string, args ...interface{}) ([]map[string]string, error) {
defer session.resetStatement()
if session.IsAutoClose {
defer session.Close()
}
session.queryPreprocess(&sqlStr, args...)
if session.IsAutoCommit {
return query2(session.DB(), sqlStr, args...)
}
return txQuery2(session.Tx, sqlStr, args...)
}
// Execute sql
func (session *Session) innerExec(sqlStr string, args ...interface{}) (sql.Result, error) {
if session.prepareStmt {
stmt, err := session.doPrepare(sqlStr)
if err != nil {
return nil, err
}
res, err := stmt.Exec(args...)
if err != nil {
return nil, err
}
return res, nil
}
return session.DB().Exec(sqlStr, args...)
}
func (session *Session) exec(sqlStr string, args ...interface{}) (sql.Result, error) {
for _, filter := range session.Engine.dialect.Filters() {
// TODO: for table name, it's no need to RefTable
sqlStr = filter.Do(sqlStr, session.Engine.dialect, session.Statement.RefTable)
}
session.saveLastSQL(sqlStr, args...)
return session.Engine.logSQLExecutionTime(sqlStr, args, func() (sql.Result, error) {
if session.IsAutoCommit {
// FIXME: oci8 can not auto commit (github.com/mattn/go-oci8)
if session.Engine.dialect.DBType() == core.ORACLE {
session.Begin()
r, err := session.Tx.Exec(sqlStr, args...)
session.Commit()
return r, err
}
return session.innerExec(sqlStr, args...)
}
return session.Tx.Exec(sqlStr, args...)
})
}
// Exec raw sql
func (session *Session) Exec(sqlStr string, args ...interface{}) (sql.Result, error) {
defer session.resetStatement()
if session.IsAutoClose {
defer session.Close()
}
return session.exec(sqlStr, args...)
}