gotosocial/vendor/github.com/uptrace/bun/query_table_create.go
tobi 2dc9fc1626
Pg to bun (#148)
* start moving to bun

* changing more stuff

* more

* and yet more

* tests passing

* seems stable now

* more big changes

* small fix

* little fixes
2021-08-25 15:34:33 +02:00

275 lines
5.8 KiB
Go

package bun
import (
"context"
"database/sql"
"sort"
"strconv"
"github.com/uptrace/bun/dialect/feature"
"github.com/uptrace/bun/dialect/sqltype"
"github.com/uptrace/bun/internal"
"github.com/uptrace/bun/schema"
)
type CreateTableQuery struct {
baseQuery
temp bool
ifNotExists bool
varchar int
fks []schema.QueryWithArgs
partitionBy schema.QueryWithArgs
tablespace schema.QueryWithArgs
}
func NewCreateTableQuery(db *DB) *CreateTableQuery {
q := &CreateTableQuery{
baseQuery: baseQuery{
db: db,
conn: db.DB,
},
}
return q
}
func (q *CreateTableQuery) Conn(db IConn) *CreateTableQuery {
q.setConn(db)
return q
}
func (q *CreateTableQuery) Model(model interface{}) *CreateTableQuery {
q.setTableModel(model)
return q
}
//------------------------------------------------------------------------------
func (q *CreateTableQuery) Table(tables ...string) *CreateTableQuery {
for _, table := range tables {
q.addTable(schema.UnsafeIdent(table))
}
return q
}
func (q *CreateTableQuery) TableExpr(query string, args ...interface{}) *CreateTableQuery {
q.addTable(schema.SafeQuery(query, args))
return q
}
func (q *CreateTableQuery) ModelTableExpr(query string, args ...interface{}) *CreateTableQuery {
q.modelTable = schema.SafeQuery(query, args)
return q
}
//------------------------------------------------------------------------------
func (q *CreateTableQuery) Temp() *CreateTableQuery {
q.temp = true
return q
}
func (q *CreateTableQuery) IfNotExists() *CreateTableQuery {
q.ifNotExists = true
return q
}
func (q *CreateTableQuery) Varchar(n int) *CreateTableQuery {
q.varchar = n
return q
}
func (q *CreateTableQuery) ForeignKey(query string, args ...interface{}) *CreateTableQuery {
q.fks = append(q.fks, schema.SafeQuery(query, args))
return q
}
func (q *CreateTableQuery) AppendQuery(fmter schema.Formatter, b []byte) (_ []byte, err error) {
if q.err != nil {
return nil, q.err
}
if q.table == nil {
return nil, errNilModel
}
b = append(b, "CREATE "...)
if q.temp {
b = append(b, "TEMP "...)
}
b = append(b, "TABLE "...)
if q.ifNotExists {
b = append(b, "IF NOT EXISTS "...)
}
b, err = q.appendFirstTable(fmter, b)
if err != nil {
return nil, err
}
b = append(b, " ("...)
for i, field := range q.table.Fields {
if i > 0 {
b = append(b, ", "...)
}
b = append(b, field.SQLName...)
b = append(b, " "...)
b = q.appendSQLType(b, field)
if field.NotNull {
b = append(b, " NOT NULL"...)
}
if q.db.features.Has(feature.AutoIncrement) && field.AutoIncrement {
b = append(b, " AUTO_INCREMENT"...)
}
if field.SQLDefault != "" {
b = append(b, " DEFAULT "...)
b = append(b, field.SQLDefault...)
}
}
b = q.appendPKConstraint(b, q.table.PKs)
b = q.appendUniqueConstraints(fmter, b)
b, err = q.appenFKConstraints(fmter, b)
if err != nil {
return nil, err
}
b = append(b, ")"...)
if !q.partitionBy.IsZero() {
b = append(b, " PARTITION BY "...)
b, err = q.partitionBy.AppendQuery(fmter, b)
if err != nil {
return nil, err
}
}
if !q.tablespace.IsZero() {
b = append(b, " TABLESPACE "...)
b, err = q.tablespace.AppendQuery(fmter, b)
if err != nil {
return nil, err
}
}
return b, nil
}
func (q *CreateTableQuery) appendSQLType(b []byte, field *schema.Field) []byte {
if field.CreateTableSQLType != field.DiscoveredSQLType {
return append(b, field.CreateTableSQLType...)
}
if q.varchar > 0 &&
field.CreateTableSQLType == sqltype.VarChar {
b = append(b, "varchar("...)
b = strconv.AppendInt(b, int64(q.varchar), 10)
b = append(b, ")"...)
return b
}
return append(b, field.CreateTableSQLType...)
}
func (q *CreateTableQuery) appendUniqueConstraints(fmter schema.Formatter, b []byte) []byte {
unique := q.table.Unique
keys := make([]string, 0, len(unique))
for key := range unique {
keys = append(keys, key)
}
sort.Strings(keys)
for _, key := range keys {
b = q.appendUniqueConstraint(fmter, b, key, unique[key])
}
return b
}
func (q *CreateTableQuery) appendUniqueConstraint(
fmter schema.Formatter, b []byte, name string, fields []*schema.Field,
) []byte {
if name != "" {
b = append(b, ", CONSTRAINT "...)
b = fmter.AppendIdent(b, name)
} else {
b = append(b, ","...)
}
b = append(b, " UNIQUE ("...)
b = appendColumns(b, "", fields)
b = append(b, ")"...)
return b
}
func (q *CreateTableQuery) appenFKConstraints(
fmter schema.Formatter, b []byte,
) (_ []byte, err error) {
for _, fk := range q.fks {
b = append(b, ", FOREIGN KEY "...)
b, err = fk.AppendQuery(fmter, b)
if err != nil {
return nil, err
}
}
return b, nil
}
func (q *CreateTableQuery) appendPKConstraint(b []byte, pks []*schema.Field) []byte {
if len(pks) == 0 {
return b
}
b = append(b, ", PRIMARY KEY ("...)
b = appendColumns(b, "", pks)
b = append(b, ")"...)
return b
}
//------------------------------------------------------------------------------
func (q *CreateTableQuery) Exec(ctx context.Context, dest ...interface{}) (sql.Result, error) {
if err := q.beforeCreateTableHook(ctx); err != nil {
return nil, err
}
queryBytes, err := q.AppendQuery(q.db.fmter, q.db.makeQueryBytes())
if err != nil {
return nil, err
}
query := internal.String(queryBytes)
res, err := q.exec(ctx, q, query)
if err != nil {
return nil, err
}
if q.table != nil {
if err := q.afterCreateTableHook(ctx); err != nil {
return nil, err
}
}
return res, nil
}
func (q *CreateTableQuery) beforeCreateTableHook(ctx context.Context) error {
if hook, ok := q.table.ZeroIface.(BeforeCreateTableHook); ok {
if err := hook.BeforeCreateTable(ctx, q); err != nil {
return err
}
}
return nil
}
func (q *CreateTableQuery) afterCreateTableHook(ctx context.Context) error {
if hook, ok := q.table.ZeroIface.(AfterCreateTableHook); ok {
if err := hook.AfterCreateTable(ctx, q); err != nil {
return err
}
}
return nil
}