/
user_space_database.go
101 lines (84 loc) · 2.97 KB
/
user_space_database.go
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// Copyright 2020 Dolthub, Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package sqle
import (
"github.com/dolthub/go-mysql-server/sql"
"github.com/dolthub/dolt/go/libraries/doltcore/table/editor"
"github.com/dolthub/dolt/go/libraries/doltcore/doltdb"
"github.com/dolthub/dolt/go/libraries/doltcore/env"
)
// UserSpaceDatabase in an implementation of sql.Database for root values. Does not expose any of the internal dolt tables.
type UserSpaceDatabase struct {
*doltdb.RootValue
editOpts editor.Options
}
var _ SqlDatabase = (*UserSpaceDatabase)(nil)
func NewUserSpaceDatabase(root *doltdb.RootValue, editOpts editor.Options) *UserSpaceDatabase {
return &UserSpaceDatabase{RootValue: root, editOpts: editOpts}
}
func (db *UserSpaceDatabase) Name() string {
return "dolt"
}
func (db *UserSpaceDatabase) GetTableInsensitive(ctx *sql.Context, tableName string) (sql.Table, bool, error) {
if doltdb.IsReadOnlySystemTable(tableName) {
return nil, false, nil
}
table, tableName, ok, err := db.RootValue.GetTableInsensitive(ctx, tableName)
if err != nil {
return nil, false, err
}
if !ok {
return nil, false, nil
}
sch, err := table.GetSchema(ctx)
if err != nil {
return nil, false, err
}
dt, err := NewDoltTable(tableName, sch, table, db, db.editOpts)
if err != nil {
return nil, false, err
}
return dt, true, nil
}
func (db *UserSpaceDatabase) GetTableNames(ctx *sql.Context) ([]string, error) {
tableNames, err := db.RootValue.GetTableNames(ctx)
if err != nil {
return nil, err
}
resultingTblNames := []string{}
for _, tbl := range tableNames {
if !doltdb.IsReadOnlySystemTable(tbl) {
resultingTblNames = append(resultingTblNames, tbl)
}
}
return resultingTblNames, nil
}
func (db *UserSpaceDatabase) GetRoot(*sql.Context) (*doltdb.RootValue, error) {
return db.RootValue, nil
}
func (db *UserSpaceDatabase) GetTemporaryTablesRoot(*sql.Context) (*doltdb.RootValue, bool) {
panic("UserSpaceDatabase should not contain any temporary tables")
}
func (db *UserSpaceDatabase) DbData() env.DbData {
panic("UserSpaceDatabase does not have dbdata")
}
func (db *UserSpaceDatabase) StartTransaction(ctx *sql.Context, tCharacteristic sql.TransactionCharacteristic) (sql.Transaction, error) {
panic("UserSpaceDatabase does not support transactions")
}
func (db *UserSpaceDatabase) Flush(ctx *sql.Context) error {
panic("UserSpaceDatabase cannot flush")
}
func (db *UserSpaceDatabase) EditOptions() editor.Options {
panic("UserSpaceDatabase does not have edit options")
}