wehub-resource-sync
92 lines
3.8 KiB
Go
92 lines
3.8 KiB
Go
// Copyright 2024 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 pgcatalog
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import (
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"io"
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"github.com/dolthub/go-mysql-server/sql"
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"github.com/dolthub/doltgresql/server/tables"
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pgtypes "github.com/dolthub/doltgresql/server/types"
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)
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// PgStatsExtName is a constant to the pg_stats_ext name.
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const PgStatsExtName = "pg_stats_ext"
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// InitPgStatsExt handles registration of the pg_stats_ext handler.
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func InitPgStatsExt() {
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tables.AddHandler(PgCatalogName, PgStatsExtName, PgStatsExtHandler{})
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}
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// PgStatsExtHandler is the handler for the pg_stats_ext table.
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type PgStatsExtHandler struct{}
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var _ tables.Handler = PgStatsExtHandler{}
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// Name implements the interface tables.Handler.
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func (p PgStatsExtHandler) Name() string {
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return PgStatsExtName
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}
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// RowIter implements the interface tables.Handler.
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func (p PgStatsExtHandler) RowIter(ctx *sql.Context, partition sql.Partition) (sql.RowIter, error) {
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// TODO: Implement pg_stats_ext row iter
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return emptyRowIter()
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}
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// PkSchema implements the interface tables.Handler.
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func (p PgStatsExtHandler) PkSchema() sql.PrimaryKeySchema {
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return sql.PrimaryKeySchema{
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Schema: pgStatsExtSchema,
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PkOrdinals: nil,
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}
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}
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// pgStatsExtSchema is the schema for pg_stats_ext.
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var pgStatsExtSchema = sql.Schema{
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{Name: "schemaname", Type: pgtypes.Name, Default: nil, Nullable: true, Source: PgStatsExtName},
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{Name: "tablename", Type: pgtypes.Name, Default: nil, Nullable: true, Source: PgStatsExtName},
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{Name: "statistics_schemaname", Type: pgtypes.Name, Default: nil, Nullable: true, Source: PgStatsExtName},
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{Name: "statistics_name", Type: pgtypes.Name, Default: nil, Nullable: true, Source: PgStatsExtName},
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{Name: "statistics_owner", Type: pgtypes.Name, Default: nil, Nullable: true, Source: PgStatsExtName},
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{Name: "attnames", Type: pgtypes.NameArray, Default: nil, Nullable: true, Source: PgStatsExtName},
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{Name: "exprs", Type: pgtypes.TextArray, Default: nil, Nullable: true, Source: PgStatsExtName},
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{Name: "kinds", Type: pgtypes.InternalCharArray, Default: nil, Nullable: true, Source: PgStatsExtName},
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{Name: "inherited", Type: pgtypes.Bool, Default: nil, Nullable: true, Source: PgStatsExtName},
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{Name: "n_distinct", Type: pgtypes.Text, Default: nil, Nullable: true, Source: PgStatsExtName}, // TODO: pg_ndistinct type AND collation C
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{Name: "dependencies", Type: pgtypes.Text, Default: nil, Nullable: true, Source: PgStatsExtName}, // TODO: pg_dependencies type AND collation C
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{Name: "most_common_vals", Type: pgtypes.TextArray, Default: nil, Nullable: true, Source: PgStatsExtName},
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{Name: "most_common_val_nulls", Type: pgtypes.BoolArray, Default: nil, Nullable: true, Source: PgStatsExtName},
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{Name: "most_common_freqs", Type: pgtypes.Float64Array, Default: nil, Nullable: true, Source: PgStatsExtName},
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{Name: "most_common_base_freqs", Type: pgtypes.Float64Array, Default: nil, Nullable: true, Source: PgStatsExtName},
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}
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// pgStatsExtRowIter is the sql.RowIter for the pg_stats_ext table.
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type pgStatsExtRowIter struct {
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}
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var _ sql.RowIter = (*pgStatsExtRowIter)(nil)
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// Next implements the interface sql.RowIter.
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func (iter *pgStatsExtRowIter) Next(ctx *sql.Context) (sql.Row, error) {
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return nil, io.EOF
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}
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// Close implements the interface sql.RowIter.
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func (iter *pgStatsExtRowIter) Close(ctx *sql.Context) error {
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return nil
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}
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