wehub-resource-sync
57 lines
1.8 KiB
Go
57 lines
1.8 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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"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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)
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// nodeBeginTransaction handles *tree.BeginTransaction nodes.
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func nodeBeginTransaction(ctx *Context, node *tree.BeginTransaction) (*vitess.Begin, error) {
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if node == nil {
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return nil, nil
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}
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if node.Modes.Isolation != tree.UnspecifiedIsolation {
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return nil, errors.Errorf("isolation levels are not yet supported")
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}
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if node.Modes.UserPriority != tree.UnspecifiedUserPriority {
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return nil, errors.Errorf("user priority is not yet supported")
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}
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if node.Modes.AsOf.Expr != nil {
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return nil, errors.Errorf("AS OF is not yet supported")
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}
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if node.Modes.Deferrable != tree.UnspecifiedDeferrableMode {
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return nil, errors.Errorf("deferrability is not yet supported")
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}
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var characteristic string
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switch node.Modes.ReadWriteMode {
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case tree.UnspecifiedReadWriteMode:
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characteristic = vitess.TxReadWrite
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case tree.ReadOnly:
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characteristic = vitess.TxReadOnly
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case tree.ReadWrite:
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characteristic = vitess.TxReadWrite
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default:
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return nil, errors.Errorf("unknown READ/WRITE setting")
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}
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return &vitess.Begin{
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TransactionCharacteristic: characteristic,
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}, nil
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}
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