chore: import upstream snapshot with attribution
This commit is contained in:
wehub-resource-sync
@@ -0,0 +1,274 @@
|
||||
// Copyright 2025 Dolthub, Inc.
|
||||
//
|
||||
// Licensed under the Apache License, Version 2.0 (the "License");
|
||||
// you may not use this file except in compliance with the License.
|
||||
// You may obtain a copy of the License at
|
||||
//
|
||||
// http://www.apache.org/licenses/LICENSE-2.0
|
||||
//
|
||||
// Unless required by applicable law or agreed to in writing, software
|
||||
// distributed under the License is distributed on an "AS IS" BASIS,
|
||||
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
// See the License for the specific language governing permissions and
|
||||
// limitations under the License.
|
||||
|
||||
package node
|
||||
|
||||
import (
|
||||
"context"
|
||||
"fmt"
|
||||
|
||||
"github.com/cockroachdb/errors"
|
||||
"github.com/dolthub/go-mysql-server/sql"
|
||||
"github.com/dolthub/go-mysql-server/sql/plan"
|
||||
vitess "github.com/dolthub/vitess/go/vt/sqlparser"
|
||||
|
||||
"github.com/dolthub/doltgresql/core"
|
||||
"github.com/dolthub/doltgresql/core/extensions"
|
||||
"github.com/dolthub/doltgresql/core/functions"
|
||||
"github.com/dolthub/doltgresql/core/id"
|
||||
"github.com/dolthub/doltgresql/core/procedures"
|
||||
"github.com/dolthub/doltgresql/server/plpgsql"
|
||||
pgtypes "github.com/dolthub/doltgresql/server/types"
|
||||
)
|
||||
|
||||
// RoutineParam represents a routine parameter with parameter name, type and default value if exists.
|
||||
type RoutineParam struct {
|
||||
Mode procedures.ParameterMode
|
||||
Name string
|
||||
Type *pgtypes.DoltgresType
|
||||
HasDefault bool
|
||||
Default sql.Expression
|
||||
}
|
||||
|
||||
// CreateFunction implements CREATE FUNCTION.
|
||||
type CreateFunction struct {
|
||||
FunctionName string
|
||||
SchemaName string
|
||||
Replace bool
|
||||
ReturnType *pgtypes.DoltgresType
|
||||
Parameters []RoutineParam
|
||||
Strict bool
|
||||
Statements []plpgsql.InterpreterOperation
|
||||
ExtensionName string
|
||||
ExtensionSymbol string
|
||||
Definition string
|
||||
SqlDef string
|
||||
SqlDefParsedStmts []vitess.Statement
|
||||
SetOf bool
|
||||
}
|
||||
|
||||
var _ sql.ExecSourceRel = (*CreateFunction)(nil)
|
||||
var _ vitess.Injectable = (*CreateFunction)(nil)
|
||||
|
||||
// NewCreateFunction returns a new *CreateFunction.
|
||||
func NewCreateFunction(
|
||||
functionName string,
|
||||
schemaName string,
|
||||
replace bool,
|
||||
retType *pgtypes.DoltgresType,
|
||||
params []RoutineParam,
|
||||
strict bool,
|
||||
definition string,
|
||||
extensionName string,
|
||||
extensionSymbol string,
|
||||
statements []plpgsql.InterpreterOperation,
|
||||
sqlDef string,
|
||||
sqlDefParsedStmts []vitess.Statement,
|
||||
setOf bool) *CreateFunction {
|
||||
return &CreateFunction{
|
||||
FunctionName: functionName,
|
||||
SchemaName: schemaName,
|
||||
Replace: replace,
|
||||
ReturnType: retType,
|
||||
Parameters: params,
|
||||
Strict: strict,
|
||||
Statements: statements,
|
||||
ExtensionName: extensionName,
|
||||
ExtensionSymbol: extensionSymbol,
|
||||
Definition: definition,
|
||||
SqlDef: sqlDef,
|
||||
SqlDefParsedStmts: sqlDefParsedStmts,
|
||||
SetOf: setOf,
|
||||
}
|
||||
}
|
||||
|
||||
// Children implements the interface sql.ExecSourceRel.
|
||||
func (c *CreateFunction) Children() []sql.Node {
|
||||
return nil
|
||||
}
|
||||
|
||||
// IsReadOnly implements the interface sql.ExecSourceRel.
|
||||
func (c *CreateFunction) IsReadOnly() bool {
|
||||
return false
|
||||
}
|
||||
|
||||
// Resolved implements the interface sql.ExecSourceRel.
|
||||
func (c *CreateFunction) Resolved() bool {
|
||||
return true
|
||||
}
|
||||
|
||||
// RowIter implements the interface sql.ExecSourceRel.
|
||||
func (c *CreateFunction) RowIter(ctx *sql.Context, r sql.Row) (sql.RowIter, error) {
|
||||
funcCollection, err := core.GetFunctionsCollectionFromContext(ctx, "")
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
paramNames := make([]string, len(c.Parameters))
|
||||
paramTypes := make([]id.Type, len(c.Parameters))
|
||||
paramDefaults := make([]string, len(c.Parameters))
|
||||
for i, param := range c.Parameters {
|
||||
paramNames[i] = param.Name
|
||||
paramTypes[i] = param.Type.ID
|
||||
if param.Default != nil {
|
||||
paramDefaults[i] = param.Default.String()
|
||||
}
|
||||
}
|
||||
|
||||
schemaName, err := core.GetSchemaName(ctx, nil, c.SchemaName)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
funcID := id.NewFunction(schemaName, c.FunctionName, paramTypes...)
|
||||
if c.Replace && funcCollection.HasFunction(ctx, funcID) {
|
||||
if err = funcCollection.DropFunction(ctx, funcID); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
}
|
||||
var extName string
|
||||
if len(c.ExtensionName) > 0 {
|
||||
ext, err := extensions.GetExtension(c.ExtensionName)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
ident := extensions.CreateLibraryIdentifier(c.ExtensionName, ext.Control.DefaultVersion)
|
||||
_, err = extensions.GetExtensionFunction(extensions.CreateLibraryIdentifier(c.ExtensionName, ext.Control.DefaultVersion), c.ExtensionSymbol)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
extName = string(ident)
|
||||
}
|
||||
err = funcCollection.AddFunction(ctx, functions.Function{
|
||||
ID: funcID,
|
||||
ReturnType: c.ReturnType.ID,
|
||||
ParameterNames: paramNames,
|
||||
ParameterTypes: paramTypes,
|
||||
ParameterDefaults: paramDefaults,
|
||||
Variadic: false, // TODO: implement this
|
||||
IsNonDeterministic: true,
|
||||
Strict: c.Strict,
|
||||
Definition: c.Definition,
|
||||
ExtensionName: extName,
|
||||
ExtensionSymbol: c.ExtensionSymbol,
|
||||
Operations: c.Statements,
|
||||
SQLDefinition: c.SqlDef,
|
||||
SetOf: c.SetOf,
|
||||
})
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
return sql.RowsToRowIter(), nil
|
||||
}
|
||||
|
||||
// Schema implements the interface sql.ExecSourceRel.
|
||||
func (c *CreateFunction) Schema(ctx *sql.Context) sql.Schema {
|
||||
return nil
|
||||
}
|
||||
|
||||
// String implements the interface sql.ExecSourceRel.
|
||||
func (c *CreateFunction) String() string {
|
||||
// TODO: fully implement this
|
||||
return "CREATE FUNCTION"
|
||||
}
|
||||
|
||||
// WithChildren implements the interface sql.ExecSourceRel.
|
||||
func (c *CreateFunction) WithChildren(ctx *sql.Context, children ...sql.Node) (sql.Node, error) {
|
||||
return plan.NillaryWithChildren(c, children...)
|
||||
}
|
||||
|
||||
// WithResolvedChildren implements the interface vitess.Injectable.
|
||||
func (c *CreateFunction) WithResolvedChildren(ctx context.Context, children []any) (any, error) {
|
||||
if len(children) > len(c.Parameters) {
|
||||
// the number of default values can be fewer but cannot be more.
|
||||
return nil, ErrVitessChildCount.New(len(c.Parameters), len(children))
|
||||
}
|
||||
newParams := make([]RoutineParam, len(c.Parameters))
|
||||
childIdx := 0
|
||||
for i, param := range c.Parameters {
|
||||
newParams[i] = param
|
||||
if c.Parameters[i].HasDefault && childIdx < len(children) {
|
||||
expr, ok := children[childIdx].(sql.Expression)
|
||||
if !ok {
|
||||
return nil, errors.Errorf("invalid vitess child, expected sql.Expression for Default value but got %t", children[i])
|
||||
}
|
||||
newParams[i].Default = expr
|
||||
childIdx++
|
||||
}
|
||||
}
|
||||
ncf := *c
|
||||
ncf.Parameters = newParams
|
||||
return &ncf, nil
|
||||
}
|
||||
|
||||
// FunctionColumn represents the deferred column used in functions.
|
||||
// It is a placeholder column reference later used for function calls.
|
||||
type FunctionColumn struct {
|
||||
Name string
|
||||
Typ *pgtypes.DoltgresType
|
||||
Idx uint16
|
||||
}
|
||||
|
||||
var _ vitess.Injectable = (*FunctionColumn)(nil)
|
||||
var _ sql.Expression = (*FunctionColumn)(nil)
|
||||
|
||||
// Resolved implements the interface sql.Expression.
|
||||
func (f *FunctionColumn) Resolved() bool {
|
||||
return !f.Typ.IsEmptyType()
|
||||
}
|
||||
|
||||
// String implements the interface sql.Expression.
|
||||
func (f *FunctionColumn) String() string {
|
||||
if f.Name != "" {
|
||||
return fmt.Sprintf(`$%v`, f.Idx+1)
|
||||
}
|
||||
return f.Name
|
||||
}
|
||||
|
||||
// Type implements the interface sql.Expression.
|
||||
func (f *FunctionColumn) Type(ctx *sql.Context) sql.Type {
|
||||
if f.Typ.IsEmptyType() {
|
||||
return pgtypes.Unknown
|
||||
}
|
||||
return f.Typ
|
||||
}
|
||||
|
||||
// IsNullable implements the interface sql.Expression.
|
||||
func (f *FunctionColumn) IsNullable(ctx *sql.Context) bool {
|
||||
return false
|
||||
}
|
||||
|
||||
// Eval implements the interface sql.Expression.
|
||||
func (f *FunctionColumn) Eval(ctx *sql.Context, row sql.Row) (interface{}, error) {
|
||||
panic("FunctionColumn is a placeholder expression, but Eval() was called")
|
||||
}
|
||||
|
||||
// Children implements the interface sql.Expression.
|
||||
func (f *FunctionColumn) Children() []sql.Expression {
|
||||
return nil
|
||||
}
|
||||
|
||||
// WithChildren implements the interface sql.Expression.
|
||||
func (f *FunctionColumn) WithChildren(ctx *sql.Context, children ...sql.Expression) (sql.Expression, error) {
|
||||
if len(children) != 0 {
|
||||
return nil, sql.ErrInvalidChildrenNumber.New(f, len(children), 0)
|
||||
}
|
||||
return f, nil
|
||||
}
|
||||
|
||||
// WithResolvedChildren implements the interface vitess.Injectable.
|
||||
func (f *FunctionColumn) WithResolvedChildren(ctx context.Context, children []any) (any, error) {
|
||||
if len(children) != 0 {
|
||||
return nil, errors.Errorf("invalid FunctionColumn child count, expected `0` but got `%d`", len(children))
|
||||
}
|
||||
return f, nil
|
||||
}
|
||||
Reference in New Issue
Block a user