wehub-resource-sync
93 lines
2.9 KiB
Go
93 lines
2.9 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 types
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import (
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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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)
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// Row is a pseudo-type that is solely used as a return type for set returning functions.
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var Row = &DoltgresType{
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ID: toInternal("row"),
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TypLength: int16(-1),
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PassedByVal: false,
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TypType: TypeType_Pseudo,
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TypCategory: TypeCategory_PseudoTypes,
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IsPreferred: false,
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IsDefined: true,
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Delimiter: ",",
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RelID: id.Null,
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SubscriptFunc: toFuncID("-"),
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Elem: internalNullType,
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Array: internalNullType,
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InputFunc: toFuncID("_"),
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OutputFunc: toFuncID("_"),
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ReceiveFunc: toFuncID("-"),
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SendFunc: toFuncID("-"),
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ModInFunc: toFuncID("-"),
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ModOutFunc: toFuncID("-"),
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AnalyzeFunc: toFuncID("-"),
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Align: TypeAlignment_Double,
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Storage: TypeStorage_Extended,
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NotNull: false,
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BaseTypeType: internalNullType,
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TypMod: -1,
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NDims: 0,
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TypCollation: id.NullCollation,
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DefaulBin: "",
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Default: "",
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Acl: nil,
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Checks: nil,
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attTypMod: -1,
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CompareFunc: toFuncID("-"),
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}
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// RowTypeWithReturnType returns Row type with Elem set to given type id.
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// We reuse the Elem field to store the given type as it's only used for array types, which it's safely checked if
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// the type is array type before used.
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func RowTypeWithReturnType(baseType *DoltgresType) *DoltgresType {
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rt := Row.Copy()
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rt.Elem = baseType
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rt.InputFunc = baseType.InputFunc
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rt.OutputFunc = baseType.OutputFunc
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return rt
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}
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var _ sql.RowIter = (*SetReturningFunctionRowIter)(nil)
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// SetReturningFunctionRowIter is used for value returned from functions that return multiple rows.
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type SetReturningFunctionRowIter struct {
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next func(ctx *sql.Context) (sql.Row, error)
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}
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// NewSetReturningFunctionRowIter creates a new SetReturningFunctionRowIter as value returned from set returning functions that return Row Type.
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func NewSetReturningFunctionRowIter(next func(ctx *sql.Context) (sql.Row, error)) *SetReturningFunctionRowIter {
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return &SetReturningFunctionRowIter{
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next: next,
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}
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}
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// Next implements the interface sql.RowIter.
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func (s *SetReturningFunctionRowIter) Next(ctx *sql.Context) (sql.Row, error) {
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return s.next(ctx)
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}
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// Close implements the interface sql.RowIter.
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func (s *SetReturningFunctionRowIter) Close(_ *sql.Context) error {
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return nil
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}
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