/
query_table_drop.go
142 lines (109 loc) · 2.72 KB
/
query_table_drop.go
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package bun
import (
"context"
"database/sql"
"github.com/uptrace/bun/internal"
"github.com/uptrace/bun/schema"
)
type DropTableQuery struct {
baseQuery
cascadeQuery
ifExists bool
}
func NewDropTableQuery(db *DB) *DropTableQuery {
q := &DropTableQuery{
baseQuery: baseQuery{
db: db,
dbi: db.DB,
},
}
return q
}
func (q *DropTableQuery) DB(db DBI) *DropTableQuery {
q.setDBI(db)
return q
}
func (q *DropTableQuery) Model(model interface{}) *DropTableQuery {
q.setTableModel(model)
return q
}
//------------------------------------------------------------------------------
func (q *DropTableQuery) Table(tables ...string) *DropTableQuery {
for _, table := range tables {
q.addTable(schema.UnsafeIdent(table))
}
return q
}
func (q *DropTableQuery) TableExpr(query string, args ...interface{}) *DropTableQuery {
q.addTable(schema.SafeQuery(query, args))
return q
}
//------------------------------------------------------------------------------
func (q *DropTableQuery) IfExists() *DropTableQuery {
q.ifExists = true
return q
}
func (q *DropTableQuery) Restrict() *DropTableQuery {
q.restrict = true
return q
}
//------------------------------------------------------------------------------
func (q *DropTableQuery) AppendQuery(fmter schema.Formatter, b []byte) (_ []byte, err error) {
if q.err != nil {
return nil, q.err
}
b = append(b, "DROP TABLE "...)
if q.ifExists {
b = append(b, "IF EXISTS "...)
}
b, err = q.appendTables(fmter, b)
if err != nil {
return nil, err
}
b = q.appendCascade(fmter, b)
return b, nil
}
//------------------------------------------------------------------------------
func (q *DropTableQuery) Exec(ctx context.Context, dest ...interface{}) (res sql.Result, _ error) {
if err := q.beforeDropTableQueryHook(ctx); err != nil {
return res, err
}
bs := getByteSlice()
defer putByteSlice(bs)
queryBytes, err := q.AppendQuery(q.db.fmter, bs.b)
if err != nil {
return res, err
}
bs.b = queryBytes
query := internal.String(queryBytes)
res, err = q.exec(ctx, q, query)
if err != nil {
return res, err
}
if err := q.afterDropTableQueryHook(ctx); err != nil {
return res, err
}
return res, nil
}
func (q *DropTableQuery) beforeDropTableQueryHook(ctx context.Context) error {
if q.tableModel == nil {
return nil
}
if hook, ok := q.table.ZeroIface.(BeforeDropTableQueryHook); ok {
if err := hook.BeforeDropTableQuery(ctx, q); err != nil {
return err
}
}
return nil
}
func (q *DropTableQuery) afterDropTableQueryHook(ctx context.Context) error {
if q.tableModel == nil {
return nil
}
if hook, ok := q.table.ZeroIface.(AfterDropTableQueryHook); ok {
if err := hook.AfterDropTableQuery(ctx, q); err != nil {
return err
}
}
return nil
}