github.com/hasnat/dolt/go@v0.0.0-20210628190320-9eb5d843fbb7/libraries/doltcore/sqle/user_space_database.go (about) 1 // Copyright 2020 Dolthub, Inc. 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License"); 4 // you may not use this file except in compliance with the License. 5 // You may obtain a copy of the License at 6 // 7 // http://www.apache.org/licenses/LICENSE-2.0 8 // 9 // Unless required by applicable law or agreed to in writing, software 10 // distributed under the License is distributed on an "AS IS" BASIS, 11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 // See the License for the specific language governing permissions and 13 // limitations under the License. 14 15 package sqle 16 17 import ( 18 "github.com/dolthub/go-mysql-server/sql" 19 20 "github.com/dolthub/dolt/go/libraries/doltcore/doltdb" 21 ) 22 23 // UserSpaceDatabase in an implementation of sql.Database for root values. Does not expose any of the internal dolt tables. 24 type UserSpaceDatabase struct { 25 *doltdb.RootValue 26 } 27 28 var _ SqlDatabase = (*UserSpaceDatabase)(nil) 29 30 func NewUserSpaceDatabase(root *doltdb.RootValue) *UserSpaceDatabase { 31 return &UserSpaceDatabase{RootValue: root} 32 } 33 34 func (db *UserSpaceDatabase) Name() string { 35 return "dolt" 36 } 37 38 func (db *UserSpaceDatabase) GetTableInsensitive(ctx *sql.Context, tableName string) (sql.Table, bool, error) { 39 if doltdb.IsReadOnlySystemTable(tableName) { 40 return nil, false, nil 41 } 42 table, tableName, ok, err := db.RootValue.GetTableInsensitive(ctx, tableName) 43 if err != nil { 44 return nil, false, err 45 } 46 if !ok { 47 return nil, false, nil 48 } 49 sch, err := table.GetSchema(ctx) 50 if err != nil { 51 return nil, false, err 52 } 53 dt := NewDoltTable(tableName, sch, table, db, false) 54 return dt, true, nil 55 } 56 57 func (db *UserSpaceDatabase) GetTableNames(ctx *sql.Context) ([]string, error) { 58 tableNames, err := db.RootValue.GetTableNames(ctx) 59 if err != nil { 60 return nil, err 61 } 62 resultingTblNames := []string{} 63 for _, tbl := range tableNames { 64 if !doltdb.IsReadOnlySystemTable(tbl) { 65 resultingTblNames = append(resultingTblNames, tbl) 66 } 67 } 68 return resultingTblNames, nil 69 } 70 71 func (db *UserSpaceDatabase) GetRoot(*sql.Context) (*doltdb.RootValue, error) { 72 return db.RootValue, nil 73 } 74 75 func (db *UserSpaceDatabase) GetTemporaryTablesRoot(*sql.Context) (*doltdb.RootValue, bool) { 76 panic("UserSpaceDatabase should not contain any temporary tables") 77 }