101 lines
2.7 KiB
Go
101 lines
2.7 KiB
Go
/*
|
|
GoToSocial
|
|
Copyright (C) 2021 GoToSocial Authors admin@gotosocial.org
|
|
|
|
This program is free software: you can redistribute it and/or modify
|
|
it under the terms of the GNU Affero General Public License as published by
|
|
the Free Software Foundation, either version 3 of the License, or
|
|
(at your option) any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU Affero General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Affero General Public License
|
|
along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
package bundb
|
|
|
|
import (
|
|
"github.com/superseriousbusiness/gotosocial/internal/db"
|
|
"github.com/uptrace/bun"
|
|
)
|
|
|
|
// whereEmptyOrNull is a convenience function to return a bun WhereGroup that specifies
|
|
// that the given column should be EITHER an empty string OR null.
|
|
//
|
|
// Use it as follows:
|
|
//
|
|
// q = q.WhereGroup(" AND ", whereEmptyOrNull("whatever_column"))
|
|
func whereEmptyOrNull(column string) func(*bun.SelectQuery) *bun.SelectQuery {
|
|
return func(q *bun.SelectQuery) *bun.SelectQuery {
|
|
return q.
|
|
WhereOr("? IS NULL", bun.Ident(column)).
|
|
WhereOr("? = ''", bun.Ident(column))
|
|
}
|
|
}
|
|
|
|
// updateWhere parses []db.Where and adds it to the given update query.
|
|
func updateWhere(q *bun.UpdateQuery, where []db.Where) {
|
|
for _, w := range where {
|
|
query, args := parseWhere(w)
|
|
q = q.Where(query, args...)
|
|
}
|
|
}
|
|
|
|
// selectWhere parses []db.Where and adds it to the given select query.
|
|
func selectWhere(q *bun.SelectQuery, where []db.Where) {
|
|
for _, w := range where {
|
|
query, args := parseWhere(w)
|
|
q = q.Where(query, args...)
|
|
}
|
|
}
|
|
|
|
// deleteWhere parses []db.Where and adds it to the given where query.
|
|
func deleteWhere(q *bun.DeleteQuery, where []db.Where) {
|
|
for _, w := range where {
|
|
query, args := parseWhere(w)
|
|
q = q.Where(query, args...)
|
|
}
|
|
}
|
|
|
|
// parseWhere looks through the options on a single db.Where entry, and
|
|
// returns the appropriate query string and arguments.
|
|
func parseWhere(w db.Where) (query string, args []interface{}) {
|
|
if w.Not {
|
|
if w.Value == nil {
|
|
query = "? IS NOT NULL"
|
|
args = []interface{}{bun.Ident(w.Key)}
|
|
return
|
|
}
|
|
|
|
if w.CaseInsensitive {
|
|
query = "LOWER(?) != LOWER(?)"
|
|
args = []interface{}{bun.Safe(w.Key), w.Value}
|
|
return
|
|
}
|
|
|
|
query = "? != ?"
|
|
args = []interface{}{bun.Safe(w.Key), w.Value}
|
|
return
|
|
}
|
|
|
|
if w.Value == nil {
|
|
query = "? IS NULL"
|
|
args = []interface{}{bun.Ident(w.Key)}
|
|
return
|
|
}
|
|
|
|
if w.CaseInsensitive {
|
|
query = "LOWER(?) = LOWER(?)"
|
|
args = []interface{}{bun.Safe(w.Key), w.Value}
|
|
return
|
|
}
|
|
|
|
query = "? = ?"
|
|
args = []interface{}{bun.Safe(w.Key), w.Value}
|
|
return
|
|
}
|