wehub-resource-sync
88 lines
2.1 KiB
Go
Executable File
88 lines
2.1 KiB
Go
Executable File
// Copyright 2025 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 node
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import (
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"context"
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"fmt"
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"io"
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"github.com/dolthub/dolt/go/libraries/doltcore/sqle/dsess"
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"github.com/dolthub/go-mysql-server/sql"
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vitess "github.com/dolthub/vitess/go/vt/sqlparser"
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"github.com/jackc/pgx/v5/pgproto3"
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)
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var _ vitess.Injectable = (*NoOp)(nil)
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var _ sql.ExecSourceRel = (*NoOp)(nil)
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// NoOp is a node that does nothing and issues zero or more warnings when run.
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// Used when a statement should parse but isn't expected to do anything, for compatibility with Postgres dumps / tools.
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type NoOp struct {
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Warnings []string
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}
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func (n NoOp) Resolved() bool {
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return true
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}
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func (n NoOp) String() string {
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return fmt.Sprintf("%v", n.Warnings)
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}
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func (n NoOp) Schema(ctx *sql.Context) sql.Schema {
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return nil
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}
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func (n NoOp) Children() []sql.Node {
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return nil
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}
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func (n NoOp) WithChildren(ctx *sql.Context, children ...sql.Node) (sql.Node, error) {
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return n, nil
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}
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func (n NoOp) IsReadOnly() bool {
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return true
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}
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func (n NoOp) WithResolvedChildren(ctx context.Context, children []any) (any, error) {
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return n, nil
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}
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type noOpRowIter struct {
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warnings []string
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}
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func (n noOpRowIter) Next(ctx *sql.Context) (sql.Row, error) {
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return nil, io.EOF
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}
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func (n noOpRowIter) Close(ctx *sql.Context) error {
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for _, warning := range n.warnings {
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noticeResponse := &pgproto3.NoticeResponse{
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Severity: "WARNING",
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Message: warning,
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}
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sess := dsess.DSessFromSess(ctx.Session)
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sess.Notice(noticeResponse)
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}
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return nil
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}
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func (n NoOp) RowIter(ctx *sql.Context, r sql.Row) (sql.RowIter, error) {
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return noOpRowIter{warnings: n.Warnings}, nil
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}
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