wehub-resource-sync
132 lines
3.8 KiB
Go
132 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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"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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// initText registers the functions to the catalog.
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func initText() {
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framework.RegisterFunction(textin)
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framework.RegisterFunction(textout)
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framework.RegisterFunction(textrecv)
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framework.RegisterFunction(textsend)
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framework.RegisterFunction(bttextcmp)
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framework.RegisterFunction(bttextnamecmp)
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}
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// textin represents the PostgreSQL function of text type IO input.
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var textin = framework.Function1{
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Name: "textin",
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Return: pgtypes.Text,
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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 val.(string), nil
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},
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}
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// textout represents the PostgreSQL function of text type IO output.
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var textout = framework.Function1{
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Name: "textout",
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Return: pgtypes.Cstring,
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Parameters: [1]*pgtypes.DoltgresType{pgtypes.Text},
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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, nil
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},
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}
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// textrecv represents the PostgreSQL function of text type IO receive.
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var textrecv = framework.Function1{
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Name: "textrecv",
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Return: pgtypes.Text,
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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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return string(data), nil
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},
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}
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// textsend represents the PostgreSQL function of text type IO send.
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var textsend = framework.Function1{
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Name: "textsend",
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Return: pgtypes.Bytea,
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Parameters: [1]*pgtypes.DoltgresType{pgtypes.Text},
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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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if wrapper, ok := val.(sql.AnyWrapper); ok {
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var err error
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val, err = wrapper.UnwrapAny(ctx)
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if err != nil {
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return nil, err
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}
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if val == nil {
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return nil, nil
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}
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}
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writer := utils.NewWireWriter()
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writer.WriteString(val.(string))
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return writer.BufferData(), nil
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},
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}
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// bttextcmp represents the PostgreSQL function of text type compare.
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var bttextcmp = framework.Function2{
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Name: "bttextcmp",
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Return: pgtypes.Int32,
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Parameters: [2]*pgtypes.DoltgresType{pgtypes.Text, pgtypes.Text},
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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.(string)
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bb := val2.(string)
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if ab == bb {
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return int32(0), nil
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} else if ab < bb {
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return int32(-1), nil
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} else {
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return int32(1), nil
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}
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},
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}
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// bttextnamecmp represents the PostgreSQL function of text type compare with name.
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var bttextnamecmp = framework.Function2{
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Name: "bttextnamecmp",
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Return: pgtypes.Int32,
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Parameters: [2]*pgtypes.DoltgresType{pgtypes.Text, pgtypes.Text},
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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.(string)
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bb := val2.(string)
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if ab == bb {
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return int32(0), nil
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} else if ab < bb {
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return int32(-1), nil
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} else {
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return int32(1), nil
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}
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},
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}
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