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package orm
type DropTableOptions struct {
IfExists bool
Cascade bool
}
type DropTableQuery struct {
q *Query
opt *DropTableOptions
}
var (
_ QueryAppender = (*DropTableQuery)(nil)
_ QueryCommand = (*DropTableQuery)(nil)
)
func NewDropTableQuery(q *Query, opt *DropTableOptions) *DropTableQuery {
return &DropTableQuery{
q: q,
opt: opt,
}
}
func (q *DropTableQuery) String() string {
b, err := q.AppendQuery(defaultFmter, nil)
if err != nil {
panic(err)
}
return string(b)
}
func (q *DropTableQuery) Operation() QueryOp {
return DropTableOp
}
func (q *DropTableQuery) Clone() QueryCommand {
return &DropTableQuery{
q: q.q.Clone(),
opt: q.opt,
}
}
func (q *DropTableQuery) Query() *Query {
return q.q
}
func (q *DropTableQuery) AppendTemplate(b []byte) ([]byte, error) {
return q.AppendQuery(dummyFormatter{}, b)
}
func (q *DropTableQuery) AppendQuery(fmter QueryFormatter, b []byte) (_ []byte, err error) {
if q.q.stickyErr != nil {
return nil, q.q.stickyErr
}
if q.q.tableModel == nil {
return nil, errModelNil
}
b = append(b, "DROP TABLE "...)
if q.opt != nil && q.opt.IfExists {
b = append(b, "IF EXISTS "...)
}
b, err = q.q.appendFirstTable(fmter, b)
if err != nil {
return nil, err
}
if q.opt != nil && q.opt.Cascade {
b = append(b, " CASCADE"...)
}
return b, q.q.stickyErr
}
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