gotosocial/vendor/github.com/uptrace/bun/query_insert.go
tobi 2dc9fc1626
Pg to bun (#148)
* start moving to bun

* changing more stuff

* more

* and yet more

* tests passing

* seems stable now

* more big changes

* small fix

* little fixes
2021-08-25 15:34:33 +02:00

551 lines
12 KiB
Go

package bun
import (
"context"
"database/sql"
"fmt"
"reflect"
"github.com/uptrace/bun/dialect/feature"
"github.com/uptrace/bun/internal"
"github.com/uptrace/bun/schema"
)
type InsertQuery struct {
whereBaseQuery
returningQuery
customValueQuery
onConflict schema.QueryWithArgs
setQuery
ignore bool
replace bool
}
func NewInsertQuery(db *DB) *InsertQuery {
q := &InsertQuery{
whereBaseQuery: whereBaseQuery{
baseQuery: baseQuery{
db: db,
conn: db.DB,
},
},
}
return q
}
func (q *InsertQuery) Conn(db IConn) *InsertQuery {
q.setConn(db)
return q
}
func (q *InsertQuery) Model(model interface{}) *InsertQuery {
q.setTableModel(model)
return q
}
// Apply calls the fn passing the SelectQuery as an argument.
func (q *InsertQuery) Apply(fn func(*InsertQuery) *InsertQuery) *InsertQuery {
return fn(q)
}
func (q *InsertQuery) With(name string, query schema.QueryAppender) *InsertQuery {
q.addWith(name, query)
return q
}
//------------------------------------------------------------------------------
func (q *InsertQuery) Table(tables ...string) *InsertQuery {
for _, table := range tables {
q.addTable(schema.UnsafeIdent(table))
}
return q
}
func (q *InsertQuery) TableExpr(query string, args ...interface{}) *InsertQuery {
q.addTable(schema.SafeQuery(query, args))
return q
}
func (q *InsertQuery) ModelTableExpr(query string, args ...interface{}) *InsertQuery {
q.modelTable = schema.SafeQuery(query, args)
return q
}
//------------------------------------------------------------------------------
func (q *InsertQuery) Column(columns ...string) *InsertQuery {
for _, column := range columns {
q.addColumn(schema.UnsafeIdent(column))
}
return q
}
func (q *InsertQuery) ExcludeColumn(columns ...string) *InsertQuery {
q.excludeColumn(columns)
return q
}
// Value overwrites model value for the column in INSERT and UPDATE queries.
func (q *InsertQuery) Value(column string, value string, args ...interface{}) *InsertQuery {
if q.table == nil {
q.err = errNilModel
return q
}
q.addValue(q.table, column, value, args)
return q
}
func (q *InsertQuery) Where(query string, args ...interface{}) *InsertQuery {
q.addWhere(schema.SafeQueryWithSep(query, args, " AND "))
return q
}
func (q *InsertQuery) WhereOr(query string, args ...interface{}) *InsertQuery {
q.addWhere(schema.SafeQueryWithSep(query, args, " OR "))
return q
}
//------------------------------------------------------------------------------
// Returning adds a RETURNING clause to the query.
//
// To suppress the auto-generated RETURNING clause, use `Returning("NULL")`.
func (q *InsertQuery) Returning(query string, args ...interface{}) *InsertQuery {
q.addReturning(schema.SafeQuery(query, args))
return q
}
func (q *InsertQuery) hasReturning() bool {
if !q.db.features.Has(feature.Returning) {
return false
}
return q.returningQuery.hasReturning()
}
//------------------------------------------------------------------------------
// Ignore generates an `INSERT IGNORE INTO` query (MySQL).
func (q *InsertQuery) Ignore() *InsertQuery {
q.ignore = true
return q
}
// Replaces generates a `REPLACE INTO` query (MySQL).
func (q *InsertQuery) Replace() *InsertQuery {
q.replace = true
return q
}
//------------------------------------------------------------------------------
func (q *InsertQuery) AppendQuery(fmter schema.Formatter, b []byte) (_ []byte, err error) {
if q.err != nil {
return nil, q.err
}
fmter = formatterWithModel(fmter, q)
b, err = q.appendWith(fmter, b)
if err != nil {
return nil, err
}
if q.replace {
b = append(b, "REPLACE "...)
} else {
b = append(b, "INSERT "...)
if q.ignore {
b = append(b, "IGNORE "...)
}
}
b = append(b, "INTO "...)
if q.db.features.Has(feature.InsertTableAlias) && !q.onConflict.IsZero() {
b, err = q.appendFirstTableWithAlias(fmter, b)
} else {
b, err = q.appendFirstTable(fmter, b)
}
if err != nil {
return nil, err
}
b, err = q.appendColumnsValues(fmter, b)
if err != nil {
return nil, err
}
b, err = q.appendOn(fmter, b)
if err != nil {
return nil, err
}
if q.hasReturning() {
b, err = q.appendReturning(fmter, b)
if err != nil {
return nil, err
}
}
return b, nil
}
func (q *InsertQuery) appendColumnsValues(
fmter schema.Formatter, b []byte,
) (_ []byte, err error) {
if q.hasMultiTables() {
if q.columns != nil {
b = append(b, " ("...)
b, err = q.appendColumns(fmter, b)
if err != nil {
return nil, err
}
b = append(b, ")"...)
}
b = append(b, " SELECT * FROM "...)
b, err = q.appendOtherTables(fmter, b)
if err != nil {
return nil, err
}
return b, nil
}
if m, ok := q.model.(*mapModel); ok {
return m.appendColumnsValues(fmter, b), nil
}
if _, ok := q.model.(*mapSliceModel); ok {
return nil, fmt.Errorf("Insert(*[]map[string]interface{}) is not supported")
}
if q.model == nil {
return nil, errNilModel
}
fields, err := q.getFields()
if err != nil {
return nil, err
}
b = append(b, " ("...)
b = q.appendFields(fmter, b, fields)
b = append(b, ") VALUES ("...)
switch model := q.tableModel.(type) {
case *structTableModel:
b, err = q.appendStructValues(fmter, b, fields, model.strct)
if err != nil {
return nil, err
}
case *sliceTableModel:
b, err = q.appendSliceValues(fmter, b, fields, model.slice)
if err != nil {
return nil, err
}
default:
return nil, fmt.Errorf("bun: Insert does not support %T", q.tableModel)
}
b = append(b, ')')
return b, nil
}
func (q *InsertQuery) appendStructValues(
fmter schema.Formatter, b []byte, fields []*schema.Field, strct reflect.Value,
) (_ []byte, err error) {
isTemplate := fmter.IsNop()
for i, f := range fields {
if i > 0 {
b = append(b, ", "...)
}
app, ok := q.modelValues[f.Name]
if ok {
b, err = app.AppendQuery(fmter, b)
if err != nil {
return nil, err
}
q.addReturningField(f)
continue
}
switch {
case isTemplate:
b = append(b, '?')
case f.NullZero && f.HasZeroValue(strct):
if q.db.features.Has(feature.DefaultPlaceholder) {
b = append(b, "DEFAULT"...)
} else if f.SQLDefault != "" {
b = append(b, f.SQLDefault...)
} else {
b = append(b, "NULL"...)
}
q.addReturningField(f)
default:
b = f.AppendValue(fmter, b, strct)
}
}
for i, v := range q.extraValues {
if i > 0 || len(fields) > 0 {
b = append(b, ", "...)
}
b, err = v.value.AppendQuery(fmter, b)
if err != nil {
return nil, err
}
}
return b, nil
}
func (q *InsertQuery) appendSliceValues(
fmter schema.Formatter, b []byte, fields []*schema.Field, slice reflect.Value,
) (_ []byte, err error) {
if fmter.IsNop() {
return q.appendStructValues(fmter, b, fields, reflect.Value{})
}
sliceLen := slice.Len()
for i := 0; i < sliceLen; i++ {
if i > 0 {
b = append(b, "), ("...)
}
el := indirect(slice.Index(i))
b, err = q.appendStructValues(fmter, b, fields, el)
if err != nil {
return nil, err
}
}
for i, v := range q.extraValues {
if i > 0 || len(fields) > 0 {
b = append(b, ", "...)
}
b, err = v.value.AppendQuery(fmter, b)
if err != nil {
return nil, err
}
}
return b, nil
}
func (q *InsertQuery) getFields() ([]*schema.Field, error) {
if q.db.features.Has(feature.DefaultPlaceholder) || len(q.columns) > 0 {
return q.baseQuery.getFields()
}
var strct reflect.Value
switch model := q.tableModel.(type) {
case *structTableModel:
strct = model.strct
case *sliceTableModel:
if model.sliceLen == 0 {
return nil, fmt.Errorf("bun: Insert(empty %T)", model.slice.Type())
}
strct = indirect(model.slice.Index(0))
}
fields := make([]*schema.Field, 0, len(q.table.Fields))
for _, f := range q.table.Fields {
if f.NotNull && f.NullZero && f.SQLDefault == "" && f.HasZeroValue(strct) {
q.addReturningField(f)
continue
}
fields = append(fields, f)
}
return fields, nil
}
func (q *InsertQuery) appendFields(
fmter schema.Formatter, b []byte, fields []*schema.Field,
) []byte {
b = appendColumns(b, "", fields)
for i, v := range q.extraValues {
if i > 0 || len(fields) > 0 {
b = append(b, ", "...)
}
b = fmter.AppendIdent(b, v.column)
}
return b
}
//------------------------------------------------------------------------------
func (q *InsertQuery) On(s string, args ...interface{}) *InsertQuery {
q.onConflict = schema.SafeQuery(s, args)
return q
}
func (q *InsertQuery) Set(query string, args ...interface{}) *InsertQuery {
q.addSet(schema.SafeQuery(query, args))
return q
}
func (q *InsertQuery) appendOn(fmter schema.Formatter, b []byte) (_ []byte, err error) {
if q.onConflict.IsZero() {
return b, nil
}
b = append(b, " ON "...)
b, err = q.onConflict.AppendQuery(fmter, b)
if err != nil {
return nil, err
}
if len(q.set) > 0 {
if fmter.HasFeature(feature.OnDuplicateKey) {
b = append(b, ' ')
} else {
b = append(b, " SET "...)
}
b, err = q.appendSet(fmter, b)
if err != nil {
return nil, err
}
} else if len(q.columns) > 0 {
fields, err := q.getDataFields()
if err != nil {
return nil, err
}
if len(fields) == 0 {
fields = q.tableModel.Table().DataFields
}
b = q.appendSetExcluded(b, fields)
}
b, err = q.appendWhere(fmter, b, true)
if err != nil {
return nil, err
}
return b, nil
}
func (q *InsertQuery) appendSetExcluded(b []byte, fields []*schema.Field) []byte {
b = append(b, " SET "...)
for i, f := range fields {
if i > 0 {
b = append(b, ", "...)
}
b = append(b, f.SQLName...)
b = append(b, " = EXCLUDED."...)
b = append(b, f.SQLName...)
}
return b
}
//------------------------------------------------------------------------------
func (q *InsertQuery) Exec(ctx context.Context, dest ...interface{}) (sql.Result, error) {
if q.table != nil {
if err := q.beforeInsertHook(ctx); err != nil {
return nil, err
}
}
queryBytes, err := q.AppendQuery(q.db.fmter, q.db.makeQueryBytes())
if err != nil {
return nil, err
}
query := internal.String(queryBytes)
var res sql.Result
if hasDest := len(dest) > 0; hasDest || q.hasReturning() {
model, err := q.getModel(dest)
if err != nil {
return nil, err
}
res, err = q.scan(ctx, q, query, model, hasDest)
if err != nil {
return nil, err
}
} else {
res, err = q.exec(ctx, q, query)
if err != nil {
return nil, err
}
if err := q.tryLastInsertID(res, dest); err != nil {
return nil, err
}
}
if q.table != nil {
if err := q.afterInsertHook(ctx); err != nil {
return nil, err
}
}
return res, nil
}
func (q *InsertQuery) beforeInsertHook(ctx context.Context) error {
if hook, ok := q.table.ZeroIface.(BeforeInsertHook); ok {
if err := hook.BeforeInsert(ctx, q); err != nil {
return err
}
}
return nil
}
func (q *InsertQuery) afterInsertHook(ctx context.Context) error {
if hook, ok := q.table.ZeroIface.(AfterInsertHook); ok {
if err := hook.AfterInsert(ctx, q); err != nil {
return err
}
}
return nil
}
func (q *InsertQuery) tryLastInsertID(res sql.Result, dest []interface{}) error {
if q.db.features.Has(feature.Returning) || q.table == nil || len(q.table.PKs) != 1 {
return nil
}
id, err := res.LastInsertId()
if err != nil {
return err
}
if id == 0 {
return nil
}
model, err := q.getModel(dest)
if err != nil {
return err
}
pk := q.table.PKs[0]
switch model := model.(type) {
case *structTableModel:
if err := pk.ScanValue(model.strct, id); err != nil {
return err
}
case *sliceTableModel:
sliceLen := model.slice.Len()
for i := 0; i < sliceLen; i++ {
strct := indirect(model.slice.Index(i))
if err := pk.ScanValue(strct, id); err != nil {
return err
}
id++
}
}
return nil
}