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2026-07-13 12:32:25 +08:00

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// Copyright 2024 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 pgcatalog
import (
"io"
"github.com/dolthub/go-mysql-server/sql"
"github.com/dolthub/doltgresql/server/tables"
pgtypes "github.com/dolthub/doltgresql/server/types"
)
// PgStatSlruName is a constant to the pg_stat_slru name.
const PgStatSlruName = "pg_stat_slru"
// InitPgStatSlru handles registration of the pg_stat_slru handler.
func InitPgStatSlru() {
tables.AddHandler(PgCatalogName, PgStatSlruName, PgStatSlruHandler{})
}
// PgStatSlruHandler is the handler for the pg_stat_slru table.
type PgStatSlruHandler struct{}
var _ tables.Handler = PgStatSlruHandler{}
// Name implements the interface tables.Handler.
func (p PgStatSlruHandler) Name() string {
return PgStatSlruName
}
// RowIter implements the interface tables.Handler.
func (p PgStatSlruHandler) RowIter(ctx *sql.Context, partition sql.Partition) (sql.RowIter, error) {
// TODO: Implement pg_stat_slru row iter
return emptyRowIter()
}
// PkSchema implements the interface tables.Handler.
func (p PgStatSlruHandler) PkSchema() sql.PrimaryKeySchema {
return sql.PrimaryKeySchema{
Schema: pgStatSlruSchema,
PkOrdinals: nil,
}
}
// pgStatSlruSchema is the schema for pg_stat_slru.
var pgStatSlruSchema = sql.Schema{
{Name: "name", Type: pgtypes.Text, Default: nil, Nullable: true, Source: PgStatSlruName},
{Name: "blks_zeroed", Type: pgtypes.Int64, Default: nil, Nullable: true, Source: PgStatSlruName},
{Name: "blks_hit", Type: pgtypes.Int64, Default: nil, Nullable: true, Source: PgStatSlruName},
{Name: "blks_read", Type: pgtypes.Int64, Default: nil, Nullable: true, Source: PgStatSlruName},
{Name: "blks_written", Type: pgtypes.Int64, Default: nil, Nullable: true, Source: PgStatSlruName},
{Name: "blks_exists", Type: pgtypes.Int64, Default: nil, Nullable: true, Source: PgStatSlruName},
{Name: "flushes", Type: pgtypes.Int64, Default: nil, Nullable: true, Source: PgStatSlruName},
{Name: "truncates", Type: pgtypes.Int64, Default: nil, Nullable: true, Source: PgStatSlruName},
{Name: "stats_reset", Type: pgtypes.TimestampTZ, Default: nil, Nullable: true, Source: PgStatSlruName},
}
// pgStatSlruRowIter is the sql.RowIter for the pg_stat_slru table.
type pgStatSlruRowIter struct {
}
var _ sql.RowIter = (*pgStatSlruRowIter)(nil)
// Next implements the interface sql.RowIter.
func (iter *pgStatSlruRowIter) Next(ctx *sql.Context) (sql.Row, error) {
return nil, io.EOF
}
// Close implements the interface sql.RowIter.
func (iter *pgStatSlruRowIter) Close(ctx *sql.Context) error {
return nil
}