wehub-resource-sync
109 lines
3.3 KiB
Go
109 lines
3.3 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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"bytes"
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"github.com/dolthub/go-mysql-server/sql"
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"github.com/jackc/pgtype"
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"github.com/dolthub/doltgresql/postgres/parser/uuid"
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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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// initUuid registers the functions to the catalog.
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func initUuid() {
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framework.RegisterFunction(uuid_in)
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framework.RegisterFunction(uuid_out)
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framework.RegisterFunction(uuid_recv)
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framework.RegisterFunction(uuid_send)
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framework.RegisterFunction(uuid_cmp)
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}
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// uuid_in represents the PostgreSQL function of uuid type IO input.
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var uuid_in = framework.Function1{
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Name: "uuid_in",
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Return: pgtypes.Uuid,
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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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return uuid.FromString(val.(string))
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},
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}
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// uuid_out represents the PostgreSQL function of uuid type IO output.
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var uuid_out = framework.Function1{
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Name: "uuid_out",
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Return: pgtypes.Cstring,
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Parameters: [1]*pgtypes.DoltgresType{pgtypes.Uuid},
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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 val.(uuid.UUID).String(), nil
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},
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}
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// uuid_recv represents the PostgreSQL function of uuid type IO receive.
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var uuid_recv = framework.Function1{
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Name: "uuid_recv",
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Return: pgtypes.Uuid,
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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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var out pgtype.UUID
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err := out.DecodeBinary(nil, data)
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if err != nil {
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return nil, err
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}
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return uuid.UUID(out.Bytes), nil
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},
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}
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// uuid_send represents the PostgreSQL function of uuid type IO send.
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var uuid_send = framework.Function1{
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Name: "uuid_send",
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Return: pgtypes.Bytea,
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Parameters: [1]*pgtypes.DoltgresType{pgtypes.Uuid},
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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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buf, err := val.(uuid.UUID).MarshalBinary()
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if err != nil {
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return nil, err
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}
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writer := utils.NewWireWriter()
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writer.WriteBytes(buf)
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return writer.BufferData(), nil
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},
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}
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// uuid_cmp represents the PostgreSQL function of uuid type compare.
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var uuid_cmp = framework.Function2{
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Name: "uuid_cmp",
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Return: pgtypes.Int32,
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Parameters: [2]*pgtypes.DoltgresType{pgtypes.Uuid, pgtypes.Uuid},
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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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ab := val1.(uuid.UUID)
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bb := val2.(uuid.UUID)
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return int32(bytes.Compare(ab.GetBytesMut(), bb.GetBytesMut())), nil
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},
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}
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