mirror of
https://github.com/superseriousbusiness/gotosocial.git
synced 2024-12-05 14:40:42 +01:00
382 lines
8.1 KiB
Go
382 lines
8.1 KiB
Go
package bun
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import (
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"context"
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"database/sql"
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"time"
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"github.com/uptrace/bun/dialect/feature"
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"github.com/uptrace/bun/internal"
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"github.com/uptrace/bun/schema"
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)
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type DeleteQuery struct {
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whereBaseQuery
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returningQuery
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}
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var _ Query = (*DeleteQuery)(nil)
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func NewDeleteQuery(db *DB) *DeleteQuery {
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q := &DeleteQuery{
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whereBaseQuery: whereBaseQuery{
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baseQuery: baseQuery{
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db: db,
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conn: db.DB,
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},
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},
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}
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return q
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}
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func (q *DeleteQuery) Conn(db IConn) *DeleteQuery {
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q.setConn(db)
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return q
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}
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func (q *DeleteQuery) Model(model interface{}) *DeleteQuery {
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q.setModel(model)
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return q
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}
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func (q *DeleteQuery) Err(err error) *DeleteQuery {
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q.setErr(err)
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return q
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}
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// Apply calls the fn passing the DeleteQuery as an argument.
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func (q *DeleteQuery) Apply(fn func(*DeleteQuery) *DeleteQuery) *DeleteQuery {
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if fn != nil {
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return fn(q)
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}
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return q
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}
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func (q *DeleteQuery) With(name string, query schema.QueryAppender) *DeleteQuery {
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q.addWith(name, query, false)
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return q
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}
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func (q *DeleteQuery) WithRecursive(name string, query schema.QueryAppender) *DeleteQuery {
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q.addWith(name, query, true)
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return q
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}
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func (q *DeleteQuery) Table(tables ...string) *DeleteQuery {
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for _, table := range tables {
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q.addTable(schema.UnsafeIdent(table))
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}
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return q
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}
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func (q *DeleteQuery) TableExpr(query string, args ...interface{}) *DeleteQuery {
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q.addTable(schema.SafeQuery(query, args))
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return q
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}
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func (q *DeleteQuery) ModelTableExpr(query string, args ...interface{}) *DeleteQuery {
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q.modelTableName = schema.SafeQuery(query, args)
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return q
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}
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//------------------------------------------------------------------------------
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func (q *DeleteQuery) WherePK(cols ...string) *DeleteQuery {
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q.addWhereCols(cols)
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return q
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}
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func (q *DeleteQuery) Where(query string, args ...interface{}) *DeleteQuery {
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q.addWhere(schema.SafeQueryWithSep(query, args, " AND "))
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return q
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}
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func (q *DeleteQuery) WhereOr(query string, args ...interface{}) *DeleteQuery {
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q.addWhere(schema.SafeQueryWithSep(query, args, " OR "))
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return q
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}
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func (q *DeleteQuery) WhereGroup(sep string, fn func(*DeleteQuery) *DeleteQuery) *DeleteQuery {
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saved := q.where
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q.where = nil
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q = fn(q)
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where := q.where
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q.where = saved
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q.addWhereGroup(sep, where)
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return q
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}
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func (q *DeleteQuery) WhereDeleted() *DeleteQuery {
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q.whereDeleted()
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return q
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}
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func (q *DeleteQuery) WhereAllWithDeleted() *DeleteQuery {
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q.whereAllWithDeleted()
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return q
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}
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func (q *DeleteQuery) ForceDelete() *DeleteQuery {
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q.flags = q.flags.Set(forceDeleteFlag)
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return q
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}
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//------------------------------------------------------------------------------
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// Returning adds a RETURNING clause to the query.
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//
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// To suppress the auto-generated RETURNING clause, use `Returning("NULL")`.
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func (q *DeleteQuery) Returning(query string, args ...interface{}) *DeleteQuery {
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q.addReturning(schema.SafeQuery(query, args))
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return q
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}
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//------------------------------------------------------------------------------
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func (q *DeleteQuery) Operation() string {
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return "DELETE"
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}
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func (q *DeleteQuery) AppendQuery(fmter schema.Formatter, b []byte) (_ []byte, err error) {
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if q.err != nil {
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return nil, q.err
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}
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fmter = formatterWithModel(fmter, q)
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if q.isSoftDelete() {
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now := time.Now()
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if err := q.tableModel.updateSoftDeleteField(now); err != nil {
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return nil, err
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}
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upd := &UpdateQuery{
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whereBaseQuery: q.whereBaseQuery,
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returningQuery: q.returningQuery,
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}
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upd.Set(q.softDeleteSet(fmter, now))
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return upd.AppendQuery(fmter, b)
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}
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withAlias := q.db.features.Has(feature.DeleteTableAlias)
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b, err = q.appendWith(fmter, b)
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if err != nil {
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return nil, err
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}
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b = append(b, "DELETE FROM "...)
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if withAlias {
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b, err = q.appendFirstTableWithAlias(fmter, b)
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} else {
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b, err = q.appendFirstTable(fmter, b)
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}
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if err != nil {
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return nil, err
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}
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if q.hasMultiTables() {
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b = append(b, " USING "...)
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b, err = q.appendOtherTables(fmter, b)
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if err != nil {
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return nil, err
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}
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}
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if q.hasFeature(feature.Output) && q.hasReturning() {
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b = append(b, " OUTPUT "...)
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b, err = q.appendOutput(fmter, b)
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if err != nil {
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return nil, err
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}
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}
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b, err = q.mustAppendWhere(fmter, b, withAlias)
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if err != nil {
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return nil, err
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}
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if q.hasFeature(feature.Returning) && q.hasReturning() {
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b = append(b, " RETURNING "...)
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b, err = q.appendReturning(fmter, b)
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if err != nil {
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return nil, err
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}
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}
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return b, nil
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}
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func (q *DeleteQuery) isSoftDelete() bool {
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return q.tableModel != nil && q.table.SoftDeleteField != nil && !q.flags.Has(forceDeleteFlag)
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}
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func (q *DeleteQuery) softDeleteSet(fmter schema.Formatter, tm time.Time) string {
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b := make([]byte, 0, 32)
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if fmter.HasFeature(feature.UpdateMultiTable) {
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b = append(b, q.table.SQLAlias...)
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b = append(b, '.')
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}
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b = append(b, q.table.SoftDeleteField.SQLName...)
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b = append(b, " = "...)
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b = schema.Append(fmter, b, tm)
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return internal.String(b)
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}
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//------------------------------------------------------------------------------
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func (q *DeleteQuery) Scan(ctx context.Context, dest ...interface{}) error {
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_, err := q.scanOrExec(ctx, dest, true)
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return err
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}
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func (q *DeleteQuery) Exec(ctx context.Context, dest ...interface{}) (sql.Result, error) {
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return q.scanOrExec(ctx, dest, len(dest) > 0)
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}
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func (q *DeleteQuery) scanOrExec(
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ctx context.Context, dest []interface{}, hasDest bool,
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) (sql.Result, error) {
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if q.err != nil {
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return nil, q.err
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}
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if q.table != nil {
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if err := q.beforeDeleteHook(ctx); err != nil {
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return nil, err
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}
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}
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// Run append model hooks before generating the query.
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if err := q.beforeAppendModel(ctx, q); err != nil {
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return nil, err
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}
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// Generate the query before checking hasReturning.
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queryBytes, err := q.AppendQuery(q.db.fmter, q.db.makeQueryBytes())
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if err != nil {
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return nil, err
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}
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useScan := hasDest || (q.hasReturning() && q.hasFeature(feature.Returning|feature.Output))
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var model Model
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if useScan {
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var err error
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model, err = q.getModel(dest)
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if err != nil {
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return nil, err
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}
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}
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query := internal.String(queryBytes)
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var res sql.Result
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if useScan {
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res, err = q.scan(ctx, q, query, model, hasDest)
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if err != nil {
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return nil, err
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}
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} else {
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res, err = q.exec(ctx, q, query)
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if err != nil {
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return nil, err
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}
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}
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if q.table != nil {
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if err := q.afterDeleteHook(ctx); err != nil {
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return nil, err
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}
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}
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return res, nil
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}
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func (q *DeleteQuery) beforeDeleteHook(ctx context.Context) error {
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if hook, ok := q.table.ZeroIface.(BeforeDeleteHook); ok {
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if err := hook.BeforeDelete(ctx, q); err != nil {
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return err
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}
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}
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return nil
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}
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func (q *DeleteQuery) afterDeleteHook(ctx context.Context) error {
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if hook, ok := q.table.ZeroIface.(AfterDeleteHook); ok {
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if err := hook.AfterDelete(ctx, q); err != nil {
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return err
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}
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}
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return nil
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}
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func (q *DeleteQuery) String() string {
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buf, err := q.AppendQuery(q.db.Formatter(), nil)
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if err != nil {
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panic(err)
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}
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return string(buf)
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}
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//------------------------------------------------------------------------------
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func (q *DeleteQuery) QueryBuilder() QueryBuilder {
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return &deleteQueryBuilder{q}
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}
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func (q *DeleteQuery) ApplyQueryBuilder(fn func(QueryBuilder) QueryBuilder) *DeleteQuery {
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return fn(q.QueryBuilder()).Unwrap().(*DeleteQuery)
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}
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type deleteQueryBuilder struct {
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*DeleteQuery
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}
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func (q *deleteQueryBuilder) WhereGroup(
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sep string, fn func(QueryBuilder) QueryBuilder,
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) QueryBuilder {
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q.DeleteQuery = q.DeleteQuery.WhereGroup(sep, func(qs *DeleteQuery) *DeleteQuery {
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return fn(q).(*deleteQueryBuilder).DeleteQuery
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})
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return q
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}
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func (q *deleteQueryBuilder) Where(query string, args ...interface{}) QueryBuilder {
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q.DeleteQuery.Where(query, args...)
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return q
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}
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func (q *deleteQueryBuilder) WhereOr(query string, args ...interface{}) QueryBuilder {
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q.DeleteQuery.WhereOr(query, args...)
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return q
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}
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func (q *deleteQueryBuilder) WhereDeleted() QueryBuilder {
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q.DeleteQuery.WhereDeleted()
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return q
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}
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func (q *deleteQueryBuilder) WhereAllWithDeleted() QueryBuilder {
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q.DeleteQuery.WhereAllWithDeleted()
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return q
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}
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func (q *deleteQueryBuilder) WherePK(cols ...string) QueryBuilder {
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q.DeleteQuery.WherePK(cols...)
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return q
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}
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func (q *deleteQueryBuilder) Unwrap() interface{} {
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return q.DeleteQuery
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}
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