chore: import upstream snapshot with attribution

2026-07-13 12:32:25 +08:00
commit e014feafe1
2285 changed files with 1131979 additions and 0 deletions
@@ -0,0 +1,74 @@
+// 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 functions
+
+import (
+	"github.com/dolthub/go-mysql-server/sql"
+
+	"github.com/dolthub/doltgresql/core"
+	"github.com/dolthub/doltgresql/core/id"
+	"github.com/dolthub/doltgresql/server/functions/framework"
+	pgtypes "github.com/dolthub/doltgresql/server/types"
+)
+
+// initPgTableIsVisible registers the functions to the catalog.
+func initPgTableIsVisible() {
+	framework.RegisterFunction(pg_table_is_visible_oid)
+}
+
+// pg_table_is_visible_oid represents the PostgreSQL system schema visibility inquiry function.
+var pg_table_is_visible_oid = framework.Function1{
+	Name:               "pg_table_is_visible",
+	Return:             pgtypes.Bool,
+	Parameters:         [1]*pgtypes.DoltgresType{pgtypes.Oid},
+	IsNonDeterministic: true,
+	Strict:             true,
+	Callable: func(ctx *sql.Context, _ [2]*pgtypes.DoltgresType, val any) (any, error) {
+		oidVal := val.(id.Id)
+		paths, err := core.SearchPath(ctx)
+		if err != nil {
+			return false, err
+		}
+		lookUpPaths := make(map[string]bool)
+		for _, path := range paths {
+			lookUpPaths[path] = true
+		}
+
+		var isVisible bool
+		err = RunCallback(ctx, oidVal, Callbacks{
+			Table: func(ctx *sql.Context, sch ItemSchema, table ItemTable) (cont bool, err error) {
+				_, isVisible = lookUpPaths[sch.Item.SchemaName()]
+				return false, nil
+			},
+			View: func(ctx *sql.Context, sch ItemSchema, view ItemView) (cont bool, err error) {
+				_, isVisible = lookUpPaths[sch.Item.SchemaName()]
+				return false, nil
+			},
+			Index: func(ctx *sql.Context, sch ItemSchema, table ItemTable, index ItemIndex) (cont bool, err error) {
+				_, isVisible = lookUpPaths[sch.Item.SchemaName()]
+				return false, nil
+			},
+			Sequence: func(ctx *sql.Context, sch ItemSchema, sequence ItemSequence) (cont bool, err error) {
+				_, isVisible = lookUpPaths[sch.Item.SchemaName()]
+				return false, nil
+			},
+			// TODO: This works for all types of relations, including views, materialized views, indexes, sequences and foreign tables.
+		})
+		if err != nil {
+			return false, err
+		}
+		return isVisible, nil
+	},
+}