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138 lines
3.4 KiB
Go
138 lines
3.4 KiB
Go
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// Copyright 2016 The Xorm Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package xorm
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import "database/sql"
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// Count counts the records. bean's non-empty fields
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// are conditions.
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func (session *Session) Count(bean interface{}) (int64, error) {
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defer session.resetStatement()
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if session.IsAutoClose {
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defer session.Close()
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}
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var sqlStr string
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var args []interface{}
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if session.Statement.RawSQL == "" {
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sqlStr, args = session.Statement.genCountSQL(bean)
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} else {
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sqlStr = session.Statement.RawSQL
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args = session.Statement.RawParams
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}
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session.queryPreprocess(&sqlStr, args...)
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var err error
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var total int64
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if session.IsAutoCommit {
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err = session.DB().QueryRow(sqlStr, args...).Scan(&total)
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} else {
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err = session.Tx.QueryRow(sqlStr, args...).Scan(&total)
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}
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if err == sql.ErrNoRows || err == nil {
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return total, nil
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}
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return 0, err
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}
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// Sum call sum some column. bean's non-empty fields are conditions.
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func (session *Session) Sum(bean interface{}, columnName string) (float64, error) {
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defer session.resetStatement()
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if session.IsAutoClose {
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defer session.Close()
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}
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var sqlStr string
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var args []interface{}
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if len(session.Statement.RawSQL) == 0 {
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sqlStr, args = session.Statement.genSumSQL(bean, columnName)
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} else {
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sqlStr = session.Statement.RawSQL
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args = session.Statement.RawParams
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}
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session.queryPreprocess(&sqlStr, args...)
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var err error
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var res float64
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if session.IsAutoCommit {
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err = session.DB().QueryRow(sqlStr, args...).Scan(&res)
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} else {
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err = session.Tx.QueryRow(sqlStr, args...).Scan(&res)
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}
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if err == sql.ErrNoRows || err == nil {
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return res, nil
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}
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return 0, err
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}
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// Sums call sum some columns. bean's non-empty fields are conditions.
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func (session *Session) Sums(bean interface{}, columnNames ...string) ([]float64, error) {
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defer session.resetStatement()
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if session.IsAutoClose {
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defer session.Close()
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}
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var sqlStr string
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var args []interface{}
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if len(session.Statement.RawSQL) == 0 {
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sqlStr, args = session.Statement.genSumSQL(bean, columnNames...)
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} else {
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sqlStr = session.Statement.RawSQL
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args = session.Statement.RawParams
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}
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session.queryPreprocess(&sqlStr, args...)
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var err error
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var res = make([]float64, len(columnNames), len(columnNames))
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if session.IsAutoCommit {
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err = session.DB().QueryRow(sqlStr, args...).ScanSlice(&res)
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} else {
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err = session.Tx.QueryRow(sqlStr, args...).ScanSlice(&res)
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}
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if err == sql.ErrNoRows || err == nil {
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return res, nil
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}
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return nil, err
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}
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// SumsInt sum specify columns and return as []int64 instead of []float64
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func (session *Session) SumsInt(bean interface{}, columnNames ...string) ([]int64, error) {
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defer session.resetStatement()
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if session.IsAutoClose {
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defer session.Close()
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}
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var sqlStr string
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var args []interface{}
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if len(session.Statement.RawSQL) == 0 {
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sqlStr, args = session.Statement.genSumSQL(bean, columnNames...)
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} else {
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sqlStr = session.Statement.RawSQL
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args = session.Statement.RawParams
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}
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session.queryPreprocess(&sqlStr, args...)
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var err error
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var res = make([]int64, 0, len(columnNames))
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if session.IsAutoCommit {
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err = session.DB().QueryRow(sqlStr, args...).ScanSlice(&res)
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} else {
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err = session.Tx.QueryRow(sqlStr, args...).ScanSlice(&res)
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}
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if err == sql.ErrNoRows || err == nil {
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return res, nil
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}
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return nil, err
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}
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