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query.go
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query.go
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// Package database - Content managed by Project Forge, see [projectforge.md] for details.
package database
import (
"context"
"database/sql"
"fmt"
"github.com/jmoiron/sqlx"
"github.com/pkg/errors"
"admini.dev/admini/app/util"
)
func (s *Service) Query(ctx context.Context, q string, tx *sqlx.Tx, logger util.Logger, values ...any) (*sqlx.Rows, error) {
const op = "query"
now, ctx, span, logger := s.newSpan(ctx, "db:"+op, q, logger)
var ret *sqlx.Rows
var err error
defer s.complete(q, op, span, now, logger, err)
f := s.logQuery(ctx, "running raw query", q, logger, values)
if tx == nil {
ret, err = s.db.QueryxContext(ctx, q, values...)
defer f(0, "ran raw query without transaction", err)
return ret, err
}
ret, err = tx.QueryxContext(ctx, q, values...)
defer f(0, "ran raw query with transaction", err)
return ret, err
}
func (s *Service) QueryRows(ctx context.Context, q string, tx *sqlx.Tx, logger util.Logger, values ...any) ([]util.ValueMap, error) {
rows, err := s.Query(ctx, q, tx, logger, values...)
if err != nil {
return nil, err
}
defer func() {
_ = rows.Close()
}()
var ret []util.ValueMap
for rows.Next() {
x := util.ValueMap{}
err = rows.MapScan(x)
if err != nil {
return nil, errors.Wrap(err, "unable to scan output row")
}
ret = append(ret, x)
}
return ret, nil
}
func (s *Service) Query2DArray(ctx context.Context, q string, tx *sqlx.Tx, logger util.Logger, values ...any) ([][]any, error) {
var err error
var slice []any
rows, err := s.Query(ctx, q, tx, logger, values...)
if err != nil {
return nil, err
}
defer func() {
_ = rows.Close()
}()
var ret [][]any
for rows.Next() {
slice, err = rows.SliceScan()
if err != nil {
return nil, errors.Wrap(err, "unable to scan output row")
}
ret = append(ret, slice)
}
return ret, nil
}
func (s *Service) QueryKVMap(ctx context.Context, q string, tx *sqlx.Tx, logger util.Logger, values ...any) (util.ValueMap, error) {
msg := `must provide two columns, a string key named "k" and value "v"`
maps, err := s.QueryRows(ctx, q, tx, logger, values...)
if err != nil {
return nil, err
}
ret := make(util.ValueMap, len(maps))
for _, m := range maps {
kx, ok := m["k"]
if !ok {
return nil, errors.New(msg)
}
k, ok := kx.(string)
if !ok {
return nil, errors.New(msg)
}
v, ok := m["v"]
if !ok {
return nil, errors.New(msg)
}
ret[k] = v
}
return ret, nil
}
func (s *Service) QuerySingleRow(ctx context.Context, q string, tx *sqlx.Tx, logger util.Logger, values ...any) (util.ValueMap, error) {
rows, err := s.QueryRows(ctx, q, tx, logger, values...)
if err != nil {
return nil, err
}
if len(rows) == 0 {
return nil, errors.Wrap(sql.ErrNoRows, "no rows returned from query")
}
if len(rows) > 1 {
return nil, errors.New("more than one row returned from query")
}
return rows[0], nil
}
func (s *Service) Select(ctx context.Context, dest any, q string, tx *sqlx.Tx, logger util.Logger, values ...any) error {
const op = "select"
now, ctx, span, logger := s.newSpan(ctx, "db:"+op, q, logger)
var err error
defer s.complete(q, op, span, now, logger, err)
f := s.logQuery(ctx, fmt.Sprintf("selecting rows of type [%T]", dest), q, logger, values)
if tx == nil {
err = s.db.SelectContext(ctx, dest, q, values...)
defer f(util.LengthAny(dest), "ran select query without transaction", err, util.ArrayFromAny(dest)...)
return err
}
err = tx.SelectContext(ctx, dest, q, values...)
defer f(util.LengthAny(dest), "ran select query with transaction", err, util.ArrayFromAny(dest)...)
return err
}
func (s *Service) Get(ctx context.Context, row any, q string, tx *sqlx.Tx, logger util.Logger, values ...any) error {
const op = "get"
now, ctx, span, logger := s.newSpan(ctx, "db:"+op, q, logger)
var err error
defer s.complete(q, op, span, now, logger, err)
f := s.logQuery(ctx, fmt.Sprintf("getting single row of type [%T]", row), q, logger, values)
if tx == nil {
err = s.db.GetContext(ctx, row, q, values...)
count := 0
if row != nil {
count = 1
}
defer f(count, "ran [get] query without transaction", err, row)
} else {
err = tx.GetContext(ctx, row, q, values...)
count := 0
if row != nil {
count = 1
}
defer f(count, "ran [get] query with transaction", err, row)
}
return err
}
type singleIntResult struct {
X *int64 `db:"x"`
}
func (s *Service) SingleInt(ctx context.Context, q string, tx *sqlx.Tx, logger util.Logger, values ...any) (int64, error) {
const op = "single-int"
now, ctx, span, logger := s.newSpan(ctx, "db:"+op, q, logger)
var err error
defer s.complete(q, op, span, now, logger, err)
x := &singleIntResult{}
err = s.Get(ctx, x, q, tx, logger, values...)
if err != nil {
return -1, err
}
if x.X == nil {
return 0, nil
}
return *x.X, nil
}
type singleBoolResult struct {
X bool `db:"x"`
}
func (s *Service) SingleBool(ctx context.Context, q string, tx *sqlx.Tx, logger util.Logger, values ...any) (bool, error) {
const op = "single-bool"
now, ctx, span, logger := s.newSpan(ctx, "db:"+op, q, logger)
var err error
defer s.complete(q, op, span, now, logger, err)
x := &singleBoolResult{}
err = s.Get(ctx, x, q, tx, logger, values...)
if err != nil {
return false, err
}
return x.X, nil
}