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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"
// Count counts the records. bean's non-empty fields
// are conditions.
func (session *Session) Count(bean ...interface{}) (int64, error) {
defer session.resetStatement()
if session.IsAutoClose {
defer session.Close()
}
var sqlStr string
var args []interface{}
if session.Statement.RawSQL == "" {
if len(bean) == 0 {
return 0, ErrTableNotFound
}
sqlStr, args = session.Statement.genCountSQL(bean[0])
} else {
sqlStr = session.Statement.RawSQL
args = session.Statement.RawParams
}
session.queryPreprocess(&sqlStr, args...)
var err error
var total int64
if session.IsAutoCommit {
err = session.DB().QueryRow(sqlStr, args...).Scan(&total)
} else {
err = session.Tx.QueryRow(sqlStr, args...).Scan(&total)
}
if err == sql.ErrNoRows || err == nil {
return total, nil
}
return 0, err
}
// Sum call sum some column. bean's non-empty fields are conditions.
func (session *Session) Sum(bean interface{}, columnName string) (float64, error) {
defer session.resetStatement()
if session.IsAutoClose {
defer session.Close()
}
var sqlStr string
var args []interface{}
if len(session.Statement.RawSQL) == 0 {
sqlStr, args = session.Statement.genSumSQL(bean, columnName)
} else {
sqlStr = session.Statement.RawSQL
args = session.Statement.RawParams
}
session.queryPreprocess(&sqlStr, args...)
var err error
var res float64
if session.IsAutoCommit {
err = session.DB().QueryRow(sqlStr, args...).Scan(&res)
} else {
err = session.Tx.QueryRow(sqlStr, args...).Scan(&res)
}
if err == sql.ErrNoRows || err == nil {
return res, nil
}
return 0, err
}
// Sums call sum some columns. bean's non-empty fields are conditions.
func (session *Session) Sums(bean interface{}, columnNames ...string) ([]float64, error) {
defer session.resetStatement()
if session.IsAutoClose {
defer session.Close()
}
var sqlStr string
var args []interface{}
if len(session.Statement.RawSQL) == 0 {
sqlStr, args = session.Statement.genSumSQL(bean, columnNames...)
} else {
sqlStr = session.Statement.RawSQL
args = session.Statement.RawParams
}
session.queryPreprocess(&sqlStr, args...)
var err error
var res = make([]float64, len(columnNames), len(columnNames))
if session.IsAutoCommit {
err = session.DB().QueryRow(sqlStr, args...).ScanSlice(&res)
} else {
err = session.Tx.QueryRow(sqlStr, args...).ScanSlice(&res)
}
if err == sql.ErrNoRows || err == nil {
return res, nil
}
return nil, err
}
// SumsInt sum specify columns and return as []int64 instead of []float64
func (session *Session) SumsInt(bean interface{}, columnNames ...string) ([]int64, error) {
defer session.resetStatement()
if session.IsAutoClose {
defer session.Close()
}
var sqlStr string
var args []interface{}
if len(session.Statement.RawSQL) == 0 {
sqlStr, args = session.Statement.genSumSQL(bean, columnNames...)
} else {
sqlStr = session.Statement.RawSQL
args = session.Statement.RawParams
}
session.queryPreprocess(&sqlStr, args...)
var err error
var res = make([]int64, len(columnNames), len(columnNames))
if session.IsAutoCommit {
err = session.DB().QueryRow(sqlStr, args...).ScanSlice(&res)
} else {
err = session.Tx.QueryRow(sqlStr, args...).ScanSlice(&res)
}
if err == sql.ErrNoRows || err == nil {
return res, nil
}
return nil, err
}
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