wehub-resource-sync
103 lines
3.3 KiB
Go
103 lines
3.3 KiB
Go
// Copyright 2023 Dolthub, Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package ast
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import (
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"fmt"
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"github.com/cockroachdb/errors"
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vitess "github.com/dolthub/vitess/go/vt/sqlparser"
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"github.com/dolthub/doltgresql/postgres/parser/sem/tree"
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"github.com/dolthub/doltgresql/server/auth"
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pgnodes "github.com/dolthub/doltgresql/server/node"
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)
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// nodeAlterSequence handles *tree.AlterSequence nodes.
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func nodeAlterSequence(ctx *Context, node *tree.AlterSequence) (vitess.Statement, error) {
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if node == nil {
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return nil, nil
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}
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var warnings []string
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if len(node.Owner) > 0 {
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// We intentionally don't support OWNER TO since we don't support owning objects
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if len(node.Options) == 0 {
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return NewNoOp("OWNER TO is unsupported and ignored"), nil
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} else {
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warnings = append(warnings, "OWNER TO is unsupported and ignored")
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}
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}
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if node.SetLog {
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return NotYetSupportedError("LOGGED and UNLOGGED are not yet supported")
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}
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nodeName := node.Name.ToTableName()
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name, err := nodeTableName(ctx, &nodeName)
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if err != nil {
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return nil, err
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}
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if len(name.DbQualifier.String()) > 0 {
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return NotYetSupportedError("ALTER SEQUENCE does not yet support specifying the database")
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}
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ownedBy := pgnodes.AlterSequenceOwnedBy{}
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for _, option := range node.Options {
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switch option.Name {
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case tree.SeqOptOwnedBy:
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ownedBy.IsSet = true
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// OWNED BY NONE is valid, so we have to check if a column was provided
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if option.ColumnItemVal != nil {
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expr, err := nodeExpr(ctx, option.ColumnItemVal)
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if err != nil {
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return nil, err
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}
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colName, ok := expr.(*vitess.ColName)
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if !ok {
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return nil, errors.New("expected sequence owner to be a table and column name")
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}
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if colName.Qualifier.SchemaQualifier.String() != name.SchemaQualifier.String() {
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return nil, errors.New("ALTER SEQUENCE must use the same schema for the sequence and owned table")
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}
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if len(colName.Qualifier.DbQualifier.String()) > 0 {
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return nil, errors.New("database specification is not yet supported for sequences")
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}
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if len(colName.Name.String()) == 0 || len(colName.Qualifier.Name.String()) == 0 {
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return nil, errors.New("invalid OWNED BY option")
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}
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ownedBy.Table = colName.Qualifier.Name.String()
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ownedBy.Column = colName.Name.String()
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}
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default:
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return NotYetSupportedError(fmt.Sprintf("%s is not yet supported", option.Name))
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}
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}
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return vitess.InjectedStatement{
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Statement: pgnodes.NewAlterSequence(
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node.IfExists,
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name.SchemaQualifier.String(),
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name.Name.String(),
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ownedBy,
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warnings...),
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Children: nil,
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Auth: vitess.AuthInformation{
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AuthType: auth.AuthType_UPDATE,
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TargetType: auth.AuthTargetType_SequenceIdentifiers,
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TargetNames: []string{name.SchemaQualifier.String(), name.Name.String()},
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},
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}, nil
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}
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