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api.go
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api.go
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package minisql
type ScannableRows interface {
Close() error
Next() bool
Scan(args ...interface{}) error
}
type QueryableAPI struct {
Queryable
}
func (q *QueryableAPI) Exec(query string, args ...interface{}) error {
return q.Queryable.Exec(query, NewValues(args))
}
func (q *QueryableAPI) Query(query string, args ...interface{}) (ScannableRows, error) {
rows, err := q.Queryable.Query(query, NewValues(args))
if err != nil {
return nil, err
}
return &scannableRows{rows}, nil
}
type DBAPI struct {
db DB
*QueryableAPI
}
func Wrap(db DB) *DBAPI {
return &DBAPI{db: db, QueryableAPI: &QueryableAPI{Queryable: db}}
}
func (db *DBAPI) Begin() (*TxAPI, error) {
tx, err := db.db.Begin()
if err != nil {
return nil, err
}
return &TxAPI{tx: tx, QueryableAPI: &QueryableAPI{Queryable: tx}}, nil
}
type TxAPI struct {
tx Tx
*QueryableAPI
}
func (tx *TxAPI) Commit() error {
return tx.tx.Commit()
}
func (tx *TxAPI) Rollback() error {
return tx.tx.Rollback()
}
type scannableRows struct {
Rows
}
func (sr *scannableRows) Scan(args ...interface{}) error {
values := make(valueArray, 0, len(args))
for _, arg := range args {
values = append(values, valueFromPointer(arg))
}
return sr.Rows.Scan(&valueArrayWrapper{values: values})
}