本文整理汇总了Golang中upper/io/db/util/sqlgen.Statement类的典型用法代码示例。如果您正苦于以下问题：Golang Statement类的具体用法？Golang Statement怎么用？Golang Statement使用的例子？那么恭喜您, 这里精选的类代码示例或许可以为您提供帮助。
在下文中一共展示了Statement类的5个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Golang代码示例。
示例1: doQueryRow
func (self *Source) doQueryRow(stmt sqlgen.Statement, args ...interface{}) (*sql.Row, error) {
var query string
var row *sql.Row
var err error
var start, end int64
start = time.Now().UnixNano()
defer func() {
end = time.Now().UnixNano()
debugLog(query, args, err, start, end)
}()
if self.session == nil {
return nil, db.ErrNotConnected
}
query = stmt.Compile(template)
if self.tx != nil {
row = self.tx.QueryRow(query, args...)
} else {
row = self.session.QueryRow(query, args...)
}
return row, err
}示例2: doExec
func (s *source) doExec(stmt sqlgen.Statement, args ...interface{}) (sql.Result, error) {
var query string
var res sql.Result
var err error
var start, end int64
start = time.Now().UnixNano()
defer func() {
end = time.Now().UnixNano()
debugLog(query, args, err, start, end)
}()
if s.session == nil {
return nil, db.ErrNotConnected
}
query = stmt.Compile(template)
if s.tx != nil {
res, err = s.tx.sqlTx.Exec(query, args...)
} else {
res, err = s.session.Exec(query, args...)
}
return res, err
}示例3: doExec
func (self *source) doExec(stmt sqlgen.Statement, args ...interface{}) (sql.Result, error) {
var query string
var res sql.Result
var err error
var start, end int64
start = time.Now().UnixNano()
defer func() {
end = time.Now().UnixNano()
debugLog(query, args, err, start, end)
}()
if self.session == nil {
return nil, db.ErrNotConnected
}
query = stmt.Compile(template)
l := len(args)
for i := 0; i < l; i++ {
query = strings.Replace(query, `?`, fmt.Sprintf(`$%d`, i+1), 1)
}
if self.tx != nil {
res, err = self.tx.Exec(query, args...)
} else {
var tx *sql.Tx
if tx, err = self.session.Begin(); err != nil {
return nil, err
}
if res, err = tx.Exec(query, args...); err != nil {
return nil, err
}
if err = tx.Commit(); err != nil {
return nil, err
}
}
return res, err
}示例4: Append
// Appends an item (map or struct) into the collection.
func (self *table) Append(item interface{}) (interface{}, error) {
var pKey string
var columns sqlgen.Columns
var values sqlgen.Values
var arguments []interface{}
var id int64
cols, vals, err := self.FieldValues(item, toInternal)
if err != nil {
return nil, err
}
columns = make(sqlgen.Columns, 0, len(cols))
for i := range cols {
columns = append(columns, sqlgen.Column{cols[i]})
}
arguments = make([]interface{}, 0, len(vals))
values = make(sqlgen.Values, 0, len(vals))
for i := range vals {
switch v := vals[i].(type) {
case sqlgen.Value:
// Adding value.
values = append(values, v)
default:
// Adding both value and placeholder.
values = append(values, sqlPlaceholder)
arguments = append(arguments, v)
}
}
if pKey, err = self.source.getPrimaryKey(self.tableN(0)); err != nil {
if err != sql.ErrNoRows {
// Can't tell primary key.
return nil, err
}
}
stmt := sqlgen.Statement{
Type: sqlgen.SqlInsert,
Table: sqlgen.Table{self.tableN(0)},
Columns: columns,
Values: values,
}
if pKey == "" {
// No primary key found.
var res sql.Result
if res, err = self.source.doExec(stmt, arguments...); err != nil {
return nil, err
}
// Attempt to use LastInsertId() (probably won't work, but the exec()
// succeeded, so the error from LastInsertId() is ignored).
id, _ = res.LastInsertId()
return id, nil
} else {
var row *sql.Row
// A primary key was found.
stmt.Extra = sqlgen.Extra(fmt.Sprintf(`RETURNING "%s"`, pKey))
if row, err = self.source.doQueryRow(stmt, arguments...); err != nil {
return nil, err
}
// Retrieving key value.
if err = row.Scan(&id); err != nil {
if err == sql.ErrNoRows {
// Can't tell the row's id. Maybe there isn't any?
return nil, nil
}
// Other kind of error.
return nil, err
}
return id, nil
}
return nil, nil
}示例5: Append
// Appends an item (map or struct) into the collection.
func (t *table) Append(item interface{}) (interface{}, error) {
var pKey []string
var columns sqlgen.Columns
var values sqlgen.Values
var arguments []interface{}
//var id []interface{}
cols, vals, err := t.FieldValues(item, toInternal)
if err != nil {
return nil, err
}
columns = make(sqlgen.Columns, 0, len(cols))
for i := range cols {
columns = append(columns, sqlgen.Column{cols[i]})
}
arguments = make([]interface{}, 0, len(vals))
values = make(sqlgen.Values, 0, len(vals))
for i := range vals {
switch v := vals[i].(type) {
case sqlgen.Value:
// Adding value.
values = append(values, v)
default:
// Adding both value and placeholder.
values = append(values, sqlPlaceholder)
arguments = append(arguments, v)
}
}
if pKey, err = t.source.getPrimaryKey(t.tableN(0)); err != nil {
if err != sql.ErrNoRows {
// Can't tell primary key.
return nil, err
}
}
stmt := sqlgen.Statement{
Type: sqlgen.SqlInsert,
Table: sqlgen.Table{t.tableN(0)},
Columns: columns,
Values: values,
}
// No primary keys defined.
if len(pKey) == 0 {
var res sql.Result
if res, err = t.source.doExec(stmt, arguments...); err != nil {
return nil, err
}
// Attempt to use LastInsertId() (probably won't work, but the exec()
// succeeded, so the error from LastInsertId() is ignored).
lastID, _ := res.LastInsertId()
return lastID, nil
}
var rows *sql.Rows
// A primary key was found.
stmt.Extra = sqlgen.Extra(fmt.Sprintf(`RETURNING "%s"`, strings.Join(pKey, `", "`)))
if rows, err = t.source.doQuery(stmt, arguments...); err != nil {
return nil, err
}
defer rows.Close()
var keyMap map[string]interface{}
err = sqlutil.FetchRow(rows, &keyMap)
// Does the item satisfy the db.IDSetter interface?
if setter, ok := item.(db.IDSetter); ok {
if err := setter.SetID(keyMap); err != nil {
return nil, err
}
return nil, nil
}
// The IDSetter interface does not match, we'll be looking for another
// interface match.
if len(keyMap) == 1 {
id := keyMap[pKey[0]]
// Matches db.Int64IDSetter
if setter, ok := item.(db.Int64IDSetter); ok {
if err = setter.SetID(to.Int64(id)); err != nil {
return nil, err
}
return nil, nil
}
// Matches db.Uint64IDSetter
if setter, ok := item.(db.Uint64IDSetter); ok {
//.........这里部分代码省略.........