wehub-resource-sync
89 lines
2.7 KiB
Go
89 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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"github.com/dolthub/go-mysql-server/sql"
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"github.com/dolthub/doltgresql/utils"
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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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)
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// initVoid registers the functions to the catalog.
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func initVoid() {
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framework.RegisterFunction(void_in)
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framework.RegisterFunction(void_out)
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framework.RegisterFunction(void_recv)
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framework.RegisterFunction(void_send)
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}
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// void_in represents the PostgreSQL function of void type IO input.
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var void_in = framework.Function2{
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Name: "void_in",
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Return: pgtypes.Void,
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Parameters: [2]*pgtypes.DoltgresType{pgtypes.Cstring, 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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// TODO
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return val1.(string), nil
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},
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}
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// void_out represents the PostgreSQL function of void type IO output.
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var void_out = framework.Function1{
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Name: "void_out",
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Return: pgtypes.Cstring,
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Parameters: [1]*pgtypes.DoltgresType{pgtypes.Void},
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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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// TODO
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return "", nil
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},
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}
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// void_recv represents the PostgreSQL function of void type IO receive.
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var void_recv = framework.Function2{
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Name: "void_recv",
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Return: pgtypes.Void,
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Parameters: [2]*pgtypes.DoltgresType{pgtypes.Internal, 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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// TODO
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data := val1.([]byte)
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if len(data) == 0 {
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return nil, nil
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}
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reader := utils.NewReader(data)
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return reader.String(), nil
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},
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}
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// void_send represents the PostgreSQL function of void type IO send.
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var void_send = framework.Function1{
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Name: "void_send",
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Return: pgtypes.Bytea,
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Parameters: [1]*pgtypes.DoltgresType{pgtypes.Void},
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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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// TODO
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str := val.(string)
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writer := utils.NewWriter(uint64(len(str) + 4))
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writer.String(str)
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return writer.Data(), nil
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},
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}
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