/
rows.go
61 lines (49 loc) · 1.1 KB
/
rows.go
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package magicsql
import (
"database/sql"
)
// Scannable allows passing around the Rows struct, or something like it,
// strictly for the purpose of pulling data out
type Scannable interface {
Scan(...interface{})
}
// Rows is a light wrapper for sql.Rows
type Rows struct {
rows *sql.Rows
err errorable
}
// Err returns the first error encountered on any operation the parent DB
// object oversees
func (r *Rows) Err() error {
return r.err.Err()
}
// Next wraps sql.Rows.Next(). If an error exists, false is returned.
func (r *Rows) Next() bool {
if r.err.Err() != nil {
return false
}
return r.rows.Next()
}
// Columns wraps sql.Rows.Columns(). If an error exists, nil is returned.
func (r *Rows) Columns() []string {
if r.err.Err() != nil {
return nil
}
var cols, err = r.rows.Columns()
r.err.SetErr(err)
return cols
}
// Scan wraps sql.Rows.Scan()
func (r *Rows) Scan(dest ...interface{}) {
if r.err.Err() != nil {
return
}
r.err.SetErr(r.rows.Scan(dest...))
}
// Close wraps sql.Rows.Close()
func (r *Rows) Close() {
if r.err.Err() != nil {
return
}
r.err.SetErr(r.rows.Close())
}