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

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Go

// Copyright 2025 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/id"
"github.com/dolthub/doltgresql/server/functions/framework"
pgtypes "github.com/dolthub/doltgresql/server/types"
)
// initPgGetRuledef registers the functions to the catalog.
func initPgGetRuledef() {
framework.RegisterFunction(pg_get_ruledef_oid)
framework.RegisterFunction(pg_get_ruledef_oid_bool)
}
// pg_get_ruledef_oid represents the PostgreSQL function of the same name, taking the same parameters.
var pg_get_ruledef_oid = framework.Function1{
Name: "pg_get_ruledef",
Return: pgtypes.Text,
Parameters: [1]*pgtypes.DoltgresType{pgtypes.Oid},
Strict: true,
Callable: func(ctx *sql.Context, _ [2]*pgtypes.DoltgresType, val1 any) (any, error) {
oidVal := val1.(id.Id)
def, err := getRuleDef(ctx, oidVal, false)
return def, err
},
}
// pg_get_ruledef_oid_bool represents the PostgreSQL function of the same name, taking the same parameters.
var pg_get_ruledef_oid_bool = framework.Function2{
Name: "pg_get_ruledef",
Return: pgtypes.Text,
Parameters: [2]*pgtypes.DoltgresType{pgtypes.Oid, pgtypes.Bool},
Strict: true,
Callable: func(ctx *sql.Context, _ [3]*pgtypes.DoltgresType, val1, val2 any) (any, error) {
oidVal := val1.(id.Id)
pretty := val2.(bool)
def, err := getRuleDef(ctx, oidVal, pretty)
return def, err
},
}
// getRuleDef returns the definition of the rule for the given OID.
// Currently, returns NULL as rule support is not fully implemented.
func getRuleDef(ctx *sql.Context, oidVal id.Id, pretty bool) (any, error) {
// TODO: Implement rule definition retrieval once rule infrastructure is available
// For now, return NULL as no rules exist in the system
return nil, nil
}