wehub-resource-sync
91 lines
2.7 KiB
Go
91 lines
2.7 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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"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/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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// initXid registers the functions to the catalog.
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func initXid() {
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framework.RegisterFunction(xidin)
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framework.RegisterFunction(xidout)
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framework.RegisterFunction(xidrecv)
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framework.RegisterFunction(xidsend)
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}
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// xidin represents the PostgreSQL function of xid type IO input.
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var xidin = framework.Function1{
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Name: "xidin",
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Return: pgtypes.Xid,
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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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uVal, err := strconv.ParseInt(strings.TrimSpace(input), 10, 64)
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if err != nil {
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return uint32(0), nil
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}
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return uint32(uVal), nil
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},
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}
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// xidout represents the PostgreSQL function of xid type IO output.
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var xidout = framework.Function1{
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Name: "xidout",
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Return: pgtypes.Cstring,
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Parameters: [1]*pgtypes.DoltgresType{pgtypes.Xid},
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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 strconv.FormatUint(uint64(val.(uint32)), 10), nil
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},
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}
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// xidrecv represents the PostgreSQL function of xid type IO receive.
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var xidrecv = framework.Function1{
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Name: "xidrecv",
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Return: pgtypes.Xid,
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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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return reader.ReadUint32(), nil
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},
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}
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// xidsend represents the PostgreSQL function of xid type IO send.
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var xidsend = framework.Function1{
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Name: "xidsend",
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Return: pgtypes.Bytea,
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Parameters: [1]*pgtypes.DoltgresType{pgtypes.Xid},
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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(val.(uint32))
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return writer.BufferData(), nil
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},
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}
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