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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"
)
// PgStatioSysSequencesName is a constant to the pg_statio_sys_sequences name.
const PgStatioSysSequencesName = "pg_statio_sys_sequences"
// InitPgStatioSysSequences handles registration of the pg_statio_sys_sequences handler.
func InitPgStatioSysSequences() {
tables.AddHandler(PgCatalogName, PgStatioSysSequencesName, PgStatioSysSequencesHandler{})
}
// PgStatioSysSequencesHandler is the handler for the pg_statio_sys_sequences table.
type PgStatioSysSequencesHandler struct{}
var _ tables.Handler = PgStatioSysSequencesHandler{}
// Name implements the interface tables.Handler.
func (p PgStatioSysSequencesHandler) Name() string {
return PgStatioSysSequencesName
}
// RowIter implements the interface tables.Handler.
func (p PgStatioSysSequencesHandler) RowIter(ctx *sql.Context, partition sql.Partition) (sql.RowIter, error) {
// TODO: Implement pg_statio_sys_sequences row iter
return emptyRowIter()
}
// PkSchema implements the interface tables.Handler.
func (p PgStatioSysSequencesHandler) PkSchema() sql.PrimaryKeySchema {
return sql.PrimaryKeySchema{
Schema: pgStatioSysSequencesSchema,
PkOrdinals: nil,
}
}
// pgStatioSysSequencesSchema is the schema for pg_statio_sys_sequences.
var pgStatioSysSequencesSchema = sql.Schema{
{Name: "relid", Type: pgtypes.Oid, Default: nil, Nullable: true, Source: PgStatioSysSequencesName},
{Name: "schemaname", Type: pgtypes.Name, Default: nil, Nullable: true, Source: PgStatioSysSequencesName},
{Name: "relname", Type: pgtypes.Name, Default: nil, Nullable: true, Source: PgStatioSysSequencesName},
{Name: "blks_read", Type: pgtypes.Int64, Default: nil, Nullable: true, Source: PgStatioSysSequencesName},
{Name: "blks_hit", Type: pgtypes.Int64, Default: nil, Nullable: true, Source: PgStatioSysSequencesName},
}
// pgStatioSysSequencesRowIter is the sql.RowIter for the pg_statio_sys_sequences table.
type pgStatioSysSequencesRowIter struct {
}
var _ sql.RowIter = (*pgStatioSysSequencesRowIter)(nil)
// Next implements the interface sql.RowIter.
func (iter *pgStatioSysSequencesRowIter) Next(ctx *sql.Context) (sql.Row, error) {
return nil, io.EOF
}
// Close implements the interface sql.RowIter.
func (iter *pgStatioSysSequencesRowIter) Close(ctx *sql.Context) error {
return nil
}