wehub-resource-sync
120 lines
3.8 KiB
Go
120 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 functions
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import (
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"cmp"
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"fmt"
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"math"
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"strconv"
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"strings"
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"github.com/dolthub/go-mysql-server/sql"
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"github.com/dolthub/doltgresql/core/id"
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"github.com/dolthub/doltgresql/server/functions/framework"
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pgtypes "github.com/dolthub/doltgresql/server/types"
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"github.com/dolthub/doltgresql/utils"
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)
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// initOid registers the functions to the catalog.
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func initOid() {
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framework.RegisterFunction(oidin)
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framework.RegisterFunction(oidout)
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framework.RegisterFunction(oidrecv)
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framework.RegisterFunction(oidsend)
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framework.RegisterFunction(btoidcmp)
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}
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// oidin represents the PostgreSQL function of oid type IO input.
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var oidin = framework.Function1{
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Name: "oidin",
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Return: pgtypes.Oid,
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Parameters: [1]*pgtypes.DoltgresType{pgtypes.Cstring},
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Strict: true,
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Callable: func(ctx *sql.Context, _ [2]*pgtypes.DoltgresType, val any) (any, error) {
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input := val.(string)
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iVal, err := strconv.ParseInt(strings.TrimSpace(input), 10, 64)
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if err != nil {
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return id.Null, pgtypes.ErrInvalidSyntaxForType.New("oid", input)
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}
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// Note: This minimum is different (-4294967295) for Postgres 15.4 compiled by Visual C++
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if iVal > int64(math.MaxUint32) || iVal < int64(math.MinInt32) {
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return id.Null, pgtypes.ErrValueIsOutOfRangeForType.New(input, "oid")
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}
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uVal := uint32(iVal)
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if internalID := id.Cache().ToInternal(uVal); internalID.IsValid() {
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return internalID, nil
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}
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return id.NewOID(uVal).AsId(), nil
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},
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}
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// oidout represents the PostgreSQL function of oid type IO output.
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var oidout = framework.Function1{
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Name: "oidout",
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Return: pgtypes.Cstring,
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Parameters: [1]*pgtypes.DoltgresType{pgtypes.Oid},
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Strict: true,
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Callable: func(ctx *sql.Context, _ [2]*pgtypes.DoltgresType, val any) (any, error) {
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return fmt.Sprintf("%d", id.Cache().ToOID(val.(id.Id))), nil
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},
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}
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// oidrecv represents the PostgreSQL function of oid type IO receive.
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var oidrecv = framework.Function1{
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Name: "oidrecv",
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Return: pgtypes.Oid,
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Parameters: [1]*pgtypes.DoltgresType{pgtypes.Internal},
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Strict: true,
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Callable: func(ctx *sql.Context, _ [2]*pgtypes.DoltgresType, val any) (any, error) {
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data := val.([]byte)
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if data == nil {
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return nil, nil
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}
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reader := utils.NewWireReader(data)
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readValue := reader.ReadUint32()
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cachedID := id.Cache().ToInternal(readValue)
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if cachedID.IsValid() {
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return cachedID, nil
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}
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return id.NewOID(readValue).AsId(), nil
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},
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}
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// oidsend represents the PostgreSQL function of oid type IO send.
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var oidsend = framework.Function1{
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Name: "oidsend",
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Return: pgtypes.Bytea,
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Parameters: [1]*pgtypes.DoltgresType{pgtypes.Oid},
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Strict: true,
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Callable: func(ctx *sql.Context, _ [2]*pgtypes.DoltgresType, val any) (any, error) {
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writer := utils.NewWireWriter()
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writer.WriteUint32(id.Cache().ToOID(val.(id.Id)))
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return writer.BufferData(), nil
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},
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}
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// btoidcmp represents the PostgreSQL function of oid type compare.
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var btoidcmp = framework.Function2{
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Name: "btoidcmp",
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Return: pgtypes.Int32,
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Parameters: [2]*pgtypes.DoltgresType{pgtypes.Oid, pgtypes.Oid},
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Strict: true,
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Callable: func(ctx *sql.Context, _ [3]*pgtypes.DoltgresType, val1, val2 any) (any, error) {
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return int32(cmp.Compare(val1.(id.Id), val2.(id.Id))), nil
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},
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}
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