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db.go
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db.go
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package sqeasy
import (
"context"
"database/sql"
)
type dbQueryContext interface {
QueryContext(ctx context.Context, query string, args ...interface{}) (*sql.Rows, error)
}
func QueryContext(ctx context.Context, db dbQueryContext, query string, params NamedParams) (*sql.Rows, error) {
query, args, err := params.Parse(query)
if err != nil {
return nil, err
}
return db.QueryContext(ctx, query, args...)
}
func Query(db dbQueryContext, query string, params NamedParams) (*sql.Rows, error) {
return QueryContext(context.Background(), db, query, params)
}
type dbQueryRowContext interface {
QueryRowContext(ctx context.Context, query string, args ...interface{}) *sql.Row
}
func QueryRowContext(ctx context.Context, db dbQueryRowContext, query string, params NamedParams) *Row {
query, args, err := params.Parse(query)
if err != nil {
return &Row{
err: err,
}
}
return &Row{
Row: db.QueryRowContext(ctx, query, args...),
}
}
func QueryRow(db dbQueryRowContext, query string, params NamedParams) *Row {
return QueryRowContext(context.Background(), db, query, params)
}
type dbExecContext interface {
ExecContext(ctx context.Context, query string, args ...interface{}) (sql.Result, error)
}
func ExecContext(ctx context.Context, db dbExecContext, query string, params NamedParams) (sql.Result, error) {
query, args, err := params.Parse(query)
if err != nil {
return nil, err
}
return db.ExecContext(ctx, query, args...)
}
func Exec(db dbExecContext, query string, params NamedParams) (sql.Result, error) {
return ExecContext(context.Background(), db, query, params)
}
type dbPrepareContext interface {
PrepareContext(ctx context.Context, query string) (*sql.Stmt, error)
}
func PrepareContext(ctx context.Context, db dbPrepareContext, query string) (*Stmt, error) {
query, params := parseNamedQuery(query)
stmt, err := db.PrepareContext(ctx, query)
return &Stmt{
stmt: stmt,
params: params,
}, err
}
func Prepare(db dbPrepareContext, query string) (*Stmt, error) {
return PrepareContext(context.Background(), db, query)
}
type Stmt struct {
stmt *sql.Stmt
params []string
}
func (s *Stmt) Close() error {
return s.stmt.Close()
}
func (s *Stmt) ExecContext(ctx context.Context, named NamedParams) (sql.Result, error) {
args, err := named.Args(s.params)
if err != nil {
return nil, err
}
return s.stmt.ExecContext(ctx, args...)
}
func (s *Stmt) Exec(args NamedParams) (sql.Result, error) {
return s.ExecContext(context.Background(), args)
}
func (s *Stmt) QueryContext(ctx context.Context, named NamedParams) (*sql.Rows, error) {
args, err := named.Args(s.params)
if err != nil {
return nil, err
}
return s.stmt.QueryContext(ctx, args...)
}
func (s *Stmt) Query(args NamedParams) (*sql.Rows, error) {
return s.QueryContext(context.Background(), args)
}
func (s *Stmt) QueryRowContext(ctx context.Context, named NamedParams) *Row {
args, err := named.Args(s.params)
if err != nil {
return &Row{
err: err,
}
}
row := s.stmt.QueryRowContext(ctx, args...)
return &Row{
Row: row,
}
}
func (s *Stmt) QueryRow(args NamedParams) *Row {
return s.QueryRowContext(context.Background(), args)
}
type Row struct {
*sql.Row
err error
}
func (r *Row) Scan(dest ...interface{}) error {
if r.err != nil {
return r.err
}
return r.Row.Scan(dest...)
}
func (r *Row) Err() error {
if r.err != nil {
return r.err
}
return r.Row.Err()
}