user_query.go

// Copyright 2019-present Facebook Inc. All rights reserved.
// This source code is licensed under the Apache 2.0 license found
// in the LICENSE file in the root directory of this source tree.

// Code generated by entc, DO NOT EDIT.

package ent

import (
	"context"
	"database/sql/driver"
	"errors"
	"fmt"
	"math"

	"entgo.io/ent/dialect/sql"
	"entgo.io/ent/dialect/sql/sqlgraph"
	"entgo.io/ent/examples/traversal/ent/group"
	"entgo.io/ent/examples/traversal/ent/pet"
	"entgo.io/ent/examples/traversal/ent/predicate"
	"entgo.io/ent/examples/traversal/ent/user"
	"entgo.io/ent/schema/field"
)

// UserQuery is the builder for querying User entities.
type UserQuery struct {
	config
	limit      *int
	offset     *int
	unique     *bool
	order      []OrderFunc
	fields     []string
	predicates []predicate.User
	// eager-loading edges.
	withPets    *PetQuery
	withFriends *UserQuery
	withGroups  *GroupQuery
	withManage  *GroupQuery
	// intermediate query (i.e. traversal path).
	sql  *sql.Selector
	path func(context.Context) (*sql.Selector, error)
}

// Where adds a new predicate for the UserQuery builder.
func (uq *UserQuery) Where(ps ...predicate.User) *UserQuery {
	uq.predicates = append(uq.predicates, ps...)
	return uq
}

// Limit adds a limit step to the query.
func (uq *UserQuery) Limit(limit int) *UserQuery {
	uq.limit = &limit
	return uq
}

// Offset adds an offset step to the query.
func (uq *UserQuery) Offset(offset int) *UserQuery {
	uq.offset = &offset
	return uq
}

// Unique configures the query builder to filter duplicate records on query.
// By default, unique is set to true, and can be disabled using this method.
func (uq *UserQuery) Unique(unique bool) *UserQuery {
	uq.unique = &unique
	return uq
}

// Order adds an order step to the query.
func (uq *UserQuery) Order(o ...OrderFunc) *UserQuery {
	uq.order = append(uq.order, o...)
	return uq
}

// QueryPets chains the current query on the "pets" edge.
func (uq *UserQuery) QueryPets() *PetQuery {
	query := &PetQuery{config: uq.config}
	query.path = func(ctx context.Context) (fromU *sql.Selector, err error) {
		if err := uq.prepareQuery(ctx); err != nil {
			return nil, err
		}
		selector := uq.sqlQuery(ctx)
		if err := selector.Err(); err != nil {
			return nil, err
		}
		step := sqlgraph.NewStep(
			sqlgraph.From(user.Table, user.FieldID, selector),
			sqlgraph.To(pet.Table, pet.FieldID),
			sqlgraph.Edge(sqlgraph.O2M, false, user.PetsTable, user.PetsColumn),
		)
		fromU = sqlgraph.SetNeighbors(uq.driver.Dialect(), step)
		return fromU, nil
	}
	return query
}

// QueryFriends chains the current query on the "friends" edge.
func (uq *UserQuery) QueryFriends() *UserQuery {
	query := &UserQuery{config: uq.config}
	query.path = func(ctx context.Context) (fromU *sql.Selector, err error) {
		if err := uq.prepareQuery(ctx); err != nil {
			return nil, err
		}
		selector := uq.sqlQuery(ctx)
		if err := selector.Err(); err != nil {
			return nil, err
		}
		step := sqlgraph.NewStep(
			sqlgraph.From(user.Table, user.FieldID, selector),
			sqlgraph.To(user.Table, user.FieldID),
			sqlgraph.Edge(sqlgraph.M2M, false, user.FriendsTable, user.FriendsPrimaryKey...),
		)
		fromU = sqlgraph.SetNeighbors(uq.driver.Dialect(), step)
		return fromU, nil
	}
	return query
}

// QueryGroups chains the current query on the "groups" edge.
func (uq *UserQuery) QueryGroups() *GroupQuery {
	query := &GroupQuery{config: uq.config}
	query.path = func(ctx context.Context) (fromU *sql.Selector, err error) {
		if err := uq.prepareQuery(ctx); err != nil {
			return nil, err
		}
		selector := uq.sqlQuery(ctx)
		if err := selector.Err(); err != nil {
			return nil, err
		}
		step := sqlgraph.NewStep(
			sqlgraph.From(user.Table, user.FieldID, selector),
			sqlgraph.To(group.Table, group.FieldID),
			sqlgraph.Edge(sqlgraph.M2M, true, user.GroupsTable, user.GroupsPrimaryKey...),
		)
		fromU = sqlgraph.SetNeighbors(uq.driver.Dialect(), step)
		return fromU, nil
	}
	return query
}

// QueryManage chains the current query on the "manage" edge.
func (uq *UserQuery) QueryManage() *GroupQuery {
	query := &GroupQuery{config: uq.config}
	query.path = func(ctx context.Context) (fromU *sql.Selector, err error) {
		if err := uq.prepareQuery(ctx); err != nil {
			return nil, err
		}
		selector := uq.sqlQuery(ctx)
		if err := selector.Err(); err != nil {
			return nil, err
		}
		step := sqlgraph.NewStep(
			sqlgraph.From(user.Table, user.FieldID, selector),
			sqlgraph.To(group.Table, group.FieldID),
			sqlgraph.Edge(sqlgraph.O2M, true, user.ManageTable, user.ManageColumn),
		)
		fromU = sqlgraph.SetNeighbors(uq.driver.Dialect(), step)
		return fromU, nil
	}
	return query
}

// First returns the first User entity from the query.
// Returns a *NotFoundError when no User was found.
func (uq *UserQuery) First(ctx context.Context) (*User, error) {
	nodes, err := uq.Limit(1).All(ctx)
	if err != nil {
		return nil, err
	}
	if len(nodes) == 0 {
		return nil, &NotFoundError{user.Label}
	}
	return nodes[0], nil
}

// FirstX is like First, but panics if an error occurs.
func (uq *UserQuery) FirstX(ctx context.Context) *User {
	node, err := uq.First(ctx)
	if err != nil && !IsNotFound(err) {
		panic(err)
	}
	return node
}

// FirstID returns the first User ID from the query.
// Returns a *NotFoundError when no User ID was found.
func (uq *UserQuery) FirstID(ctx context.Context) (id int, err error) {
	var ids []int
	if ids, err = uq.Limit(1).IDs(ctx); err != nil {
		return
	}
	if len(ids) == 0 {
		err = &NotFoundError{user.Label}
		return
	}
	return ids[0], nil
}

// FirstIDX is like FirstID, but panics if an error occurs.
func (uq *UserQuery) FirstIDX(ctx context.Context) int {
	id, err := uq.FirstID(ctx)
	if err != nil && !IsNotFound(err) {
		panic(err)
	}
	return id
}

// Only returns a single User entity found by the query, ensuring it only returns one.
// Returns a *NotSingularError when exactly one User entity is not found.
// Returns a *NotFoundError when no User entities are found.
func (uq *UserQuery) Only(ctx context.Context) (*User, error) {
	nodes, err := uq.Limit(2).All(ctx)
	if err != nil {
		return nil, err
	}
	switch len(nodes) {
	case 1:
		return nodes[0], nil
	case 0:
		return nil, &NotFoundError{user.Label}
	default:
		return nil, &NotSingularError{user.Label}
	}
}

// OnlyX is like Only, but panics if an error occurs.
func (uq *UserQuery) OnlyX(ctx context.Context) *User {
	node, err := uq.Only(ctx)
	if err != nil {
		panic(err)
	}
	return node
}

// OnlyID is like Only, but returns the only User ID in the query.
// Returns a *NotSingularError when exactly one User ID is not found.
// Returns a *NotFoundError when no entities are found.
func (uq *UserQuery) OnlyID(ctx context.Context) (id int, err error) {
	var ids []int
	if ids, err = uq.Limit(2).IDs(ctx); err != nil {
		return
	}
	switch len(ids) {
	case 1:
		id = ids[0]
	case 0:
		err = &NotFoundError{user.Label}
	default:
		err = &NotSingularError{user.Label}
	}
	return
}

// OnlyIDX is like OnlyID, but panics if an error occurs.
func (uq *UserQuery) OnlyIDX(ctx context.Context) int {
	id, err := uq.OnlyID(ctx)
	if err != nil {
		panic(err)
	}
	return id
}

// All executes the query and returns a list of Users.
func (uq *UserQuery) All(ctx context.Context) ([]*User, error) {
	if err := uq.prepareQuery(ctx); err != nil {
		return nil, err
	}
	return uq.sqlAll(ctx)
}

// AllX is like All, but panics if an error occurs.
func (uq *UserQuery) AllX(ctx context.Context) []*User {
	nodes, err := uq.All(ctx)
	if err != nil {
		panic(err)
	}
	return nodes
}

// IDs executes the query and returns a list of User IDs.
func (uq *UserQuery) IDs(ctx context.Context) ([]int, error) {
	var ids []int
	if err := uq.Select(user.FieldID).Scan(ctx, &ids); err != nil {
		return nil, err
	}
	return ids, nil
}

// IDsX is like IDs, but panics if an error occurs.
func (uq *UserQuery) IDsX(ctx context.Context) []int {
	ids, err := uq.IDs(ctx)
	if err != nil {
		panic(err)
	}
	return ids
}

// Count returns the count of the given query.
func (uq *UserQuery) Count(ctx context.Context) (int, error) {
	if err := uq.prepareQuery(ctx); err != nil {
		return 0, err
	}
	return uq.sqlCount(ctx)
}

// CountX is like Count, but panics if an error occurs.
func (uq *UserQuery) CountX(ctx context.Context) int {
	count, err := uq.Count(ctx)
	if err != nil {
		panic(err)
	}
	return count
}

// Exist returns true if the query has elements in the graph.
func (uq *UserQuery) Exist(ctx context.Context) (bool, error) {
	if err := uq.prepareQuery(ctx); err != nil {
		return false, err
	}
	return uq.sqlExist(ctx)
}

// ExistX is like Exist, but panics if an error occurs.
func (uq *UserQuery) ExistX(ctx context.Context) bool {
	exist, err := uq.Exist(ctx)
	if err != nil {
		panic(err)
	}
	return exist
}

// Clone returns a duplicate of the UserQuery builder, including all associated steps. It can be
// used to prepare common query builders and use them differently after the clone is made.
func (uq *UserQuery) Clone() *UserQuery {
	if uq == nil {
		return nil
	}
	return &UserQuery{
		config:      uq.config,
		limit:       uq.limit,
		offset:      uq.offset,
		order:       append([]OrderFunc{}, uq.order...),
		predicates:  append([]predicate.User{}, uq.predicates...),
		withPets:    uq.withPets.Clone(),
		withFriends: uq.withFriends.Clone(),
		withGroups:  uq.withGroups.Clone(),
		withManage:  uq.withManage.Clone(),
		// clone intermediate query.
		sql:  uq.sql.Clone(),
		path: uq.path,
	}
}

// WithPets tells the query-builder to eager-load the nodes that are connected to
// the "pets" edge. The optional arguments are used to configure the query builder of the edge.
func (uq *UserQuery) WithPets(opts ...func(*PetQuery)) *UserQuery {
	query := &PetQuery{config: uq.config}
	for _, opt := range opts {
		opt(query)
	}
	uq.withPets = query
	return uq
}

// WithFriends tells the query-builder to eager-load the nodes that are connected to
// the "friends" edge. The optional arguments are used to configure the query builder of the edge.
func (uq *UserQuery) WithFriends(opts ...func(*UserQuery)) *UserQuery {
	query := &UserQuery{config: uq.config}
	for _, opt := range opts {
		opt(query)
	}
	uq.withFriends = query
	return uq
}

// WithGroups tells the query-builder to eager-load the nodes that are connected to
// the "groups" edge. The optional arguments are used to configure the query builder of the edge.
func (uq *UserQuery) WithGroups(opts ...func(*GroupQuery)) *UserQuery {
	query := &GroupQuery{config: uq.config}
	for _, opt := range opts {
		opt(query)
	}
	uq.withGroups = query
	return uq
}

// WithManage tells the query-builder to eager-load the nodes that are connected to
// the "manage" edge. The optional arguments are used to configure the query builder of the edge.
func (uq *UserQuery) WithManage(opts ...func(*GroupQuery)) *UserQuery {
	query := &GroupQuery{config: uq.config}
	for _, opt := range opts {
		opt(query)
	}
	uq.withManage = query
	return uq
}

// GroupBy is used to group vertices by one or more fields/columns.
// It is often used with aggregate functions, like: count, max, mean, min, sum.
//
// Example:
//
//	var v []struct {
//		Age int `json:"age,omitempty"`
//		Count int `json:"count,omitempty"`
//	}
//
//	client.User.Query().
//		GroupBy(user.FieldAge).
//		Aggregate(ent.Count()).
//		Scan(ctx, &v)
//
func (uq *UserQuery) GroupBy(field string, fields ...string) *UserGroupBy {
	group := &UserGroupBy{config: uq.config}
	group.fields = append([]string{field}, fields...)
	group.path = func(ctx context.Context) (prev *sql.Selector, err error) {
		if err := uq.prepareQuery(ctx); err != nil {
			return nil, err
		}
		return uq.sqlQuery(ctx), nil
	}
	return group
}

// Select allows the selection one or more fields/columns for the given query,
// instead of selecting all fields in the entity.
//
// Example:
//
//	var v []struct {
//		Age int `json:"age,omitempty"`
//	}
//
//	client.User.Query().
//		Select(user.FieldAge).
//		Scan(ctx, &v)
//
func (uq *UserQuery) Select(fields ...string) *UserSelect {
	uq.fields = append(uq.fields, fields...)
	return &UserSelect{UserQuery: uq}
}

func (uq *UserQuery) prepareQuery(ctx context.Context) error {
	for _, f := range uq.fields {
		if !user.ValidColumn(f) {
			return &ValidationError{Name: f, err: fmt.Errorf("ent: invalid field %q for query", f)}
		}
	}
	if uq.path != nil {
		prev, err := uq.path(ctx)
		if err != nil {
			return err
		}
		uq.sql = prev
	}
	return nil
}

func (uq *UserQuery) sqlAll(ctx context.Context) ([]*User, error) {
	var (
		nodes       = []*User{}
		_spec       = uq.querySpec()
		loadedTypes = [4]bool{
			uq.withPets != nil,
			uq.withFriends != nil,
			uq.withGroups != nil,
			uq.withManage != nil,
		}
	)
	_spec.ScanValues = func(columns []string) ([]interface{}, error) {
		node := &User{config: uq.config}
		nodes = append(nodes, node)
		return node.scanValues(columns)
	}
	_spec.Assign = func(columns []string, values []interface{}) error {
		if len(nodes) == 0 {
			return fmt.Errorf("ent: Assign called without calling ScanValues")
		}
		node := nodes[len(nodes)-1]
		node.Edges.loadedTypes = loadedTypes
		return node.assignValues(columns, values)
	}
	if err := sqlgraph.QueryNodes(ctx, uq.driver, _spec); err != nil {
		return nil, err
	}
	if len(nodes) == 0 {
		return nodes, nil
	}

	if query := uq.withPets; query != nil {
		fks := make([]driver.Value, 0, len(nodes))
		nodeids := make(map[int]*User)
		for i := range nodes {
			fks = append(fks, nodes[i].ID)
			nodeids[nodes[i].ID] = nodes[i]
			nodes[i].Edges.Pets = []*Pet{}
		}
		query.withFKs = true
		query.Where(predicate.Pet(func(s *sql.Selector) {
			s.Where(sql.InValues(user.PetsColumn, fks...))
		}))
		neighbors, err := query.All(ctx)
		if err != nil {
			return nil, err
		}
		for _, n := range neighbors {
			fk := n.user_pets
			if fk == nil {
				return nil, fmt.Errorf(`foreign-key "user_pets" is nil for node %v`, n.ID)
			}
			node, ok := nodeids[*fk]
			if !ok {
				return nil, fmt.Errorf(`unexpected foreign-key "user_pets" returned %v for node %v`, *fk, n.ID)
			}
			node.Edges.Pets = append(node.Edges.Pets, n)
		}
	}

	if query := uq.withFriends; query != nil {
		fks := make([]driver.Value, 0, len(nodes))
		ids := make(map[int]*User, len(nodes))
		for _, node := range nodes {
			ids[node.ID] = node
			fks = append(fks, node.ID)
			node.Edges.Friends = []*User{}
		}
		var (
			edgeids []int
			edges   = make(map[int][]*User)
		)
		_spec := &sqlgraph.EdgeQuerySpec{
			Edge: &sqlgraph.EdgeSpec{
				Inverse: false,
				Table:   user.FriendsTable,
				Columns: user.FriendsPrimaryKey,
			},
			Predicate: func(s *sql.Selector) {
				s.Where(sql.InValues(user.FriendsPrimaryKey[0], fks...))
			},
			ScanValues: func() [2]interface{} {
				return [2]interface{}{new(sql.NullInt64), new(sql.NullInt64)}
			},
			Assign: func(out, in interface{}) error {
				eout, ok := out.(*sql.NullInt64)
				if !ok || eout == nil {
					return fmt.Errorf("unexpected id value for edge-out")
				}
				ein, ok := in.(*sql.NullInt64)
				if !ok || ein == nil {
					return fmt.Errorf("unexpected id value for edge-in")
				}
				outValue := int(eout.Int64)
				inValue := int(ein.Int64)
				node, ok := ids[outValue]
				if !ok {
					return fmt.Errorf("unexpected node id in edges: %v", outValue)
				}
				if _, ok := edges[inValue]; !ok {
					edgeids = append(edgeids, inValue)
				}
				edges[inValue] = append(edges[inValue], node)
				return nil
			},
		}
		if err := sqlgraph.QueryEdges(ctx, uq.driver, _spec); err != nil {
			return nil, fmt.Errorf(`query edges "friends": %w`, err)
		}
		query.Where(user.IDIn(edgeids...))
		neighbors, err := query.All(ctx)
		if err != nil {
			return nil, err
		}
		for _, n := range neighbors {
			nodes, ok := edges[n.ID]
			if !ok {
				return nil, fmt.Errorf(`unexpected "friends" node returned %v`, n.ID)
			}
			for i := range nodes {
				nodes[i].Edges.Friends = append(nodes[i].Edges.Friends, n)
			}
		}
	}

	if query := uq.withGroups; query != nil {
		fks := make([]driver.Value, 0, len(nodes))
		ids := make(map[int]*User, len(nodes))
		for _, node := range nodes {
			ids[node.ID] = node
			fks = append(fks, node.ID)
			node.Edges.Groups = []*Group{}
		}
		var (
			edgeids []int
			edges   = make(map[int][]*User)
		)
		_spec := &sqlgraph.EdgeQuerySpec{
			Edge: &sqlgraph.EdgeSpec{
				Inverse: true,
				Table:   user.GroupsTable,
				Columns: user.GroupsPrimaryKey,
			},
			Predicate: func(s *sql.Selector) {
				s.Where(sql.InValues(user.GroupsPrimaryKey[1], fks...))
			},
			ScanValues: func() [2]interface{} {
				return [2]interface{}{new(sql.NullInt64), new(sql.NullInt64)}
			},
			Assign: func(out, in interface{}) error {
				eout, ok := out.(*sql.NullInt64)
				if !ok || eout == nil {
					return fmt.Errorf("unexpected id value for edge-out")
				}
				ein, ok := in.(*sql.NullInt64)
				if !ok || ein == nil {
					return fmt.Errorf("unexpected id value for edge-in")
				}
				outValue := int(eout.Int64)
				inValue := int(ein.Int64)
				node, ok := ids[outValue]
				if !ok {
					return fmt.Errorf("unexpected node id in edges: %v", outValue)
				}
				if _, ok := edges[inValue]; !ok {
					edgeids = append(edgeids, inValue)
				}
				edges[inValue] = append(edges[inValue], node)
				return nil
			},
		}
		if err := sqlgraph.QueryEdges(ctx, uq.driver, _spec); err != nil {
			return nil, fmt.Errorf(`query edges "groups": %w`, err)
		}
		query.Where(group.IDIn(edgeids...))
		neighbors, err := query.All(ctx)
		if err != nil {
			return nil, err
		}
		for _, n := range neighbors {
			nodes, ok := edges[n.ID]
			if !ok {
				return nil, fmt.Errorf(`unexpected "groups" node returned %v`, n.ID)
			}
			for i := range nodes {
				nodes[i].Edges.Groups = append(nodes[i].Edges.Groups, n)
			}
		}
	}

	if query := uq.withManage; query != nil {
		fks := make([]driver.Value, 0, len(nodes))
		nodeids := make(map[int]*User)
		for i := range nodes {
			fks = append(fks, nodes[i].ID)
			nodeids[nodes[i].ID] = nodes[i]
			nodes[i].Edges.Manage = []*Group{}
		}
		query.withFKs = true
		query.Where(predicate.Group(func(s *sql.Selector) {
			s.Where(sql.InValues(user.ManageColumn, fks...))
		}))
		neighbors, err := query.All(ctx)
		if err != nil {
			return nil, err
		}
		for _, n := range neighbors {
			fk := n.group_admin
			if fk == nil {
				return nil, fmt.Errorf(`foreign-key "group_admin" is nil for node %v`, n.ID)
			}
			node, ok := nodeids[*fk]
			if !ok {
				return nil, fmt.Errorf(`unexpected foreign-key "group_admin" returned %v for node %v`, *fk, n.ID)
			}
			node.Edges.Manage = append(node.Edges.Manage, n)
		}
	}

	return nodes, nil
}

func (uq *UserQuery) sqlCount(ctx context.Context) (int, error) {
	_spec := uq.querySpec()
	_spec.Node.Columns = uq.fields
	if len(uq.fields) > 0 {
		_spec.Unique = uq.unique != nil && *uq.unique
	}
	return sqlgraph.CountNodes(ctx, uq.driver, _spec)
}

func (uq *UserQuery) sqlExist(ctx context.Context) (bool, error) {
	n, err := uq.sqlCount(ctx)
	if err != nil {
		return false, fmt.Errorf("ent: check existence: %w", err)
	}
	return n > 0, nil
}

func (uq *UserQuery) querySpec() *sqlgraph.QuerySpec {
	_spec := &sqlgraph.QuerySpec{
		Node: &sqlgraph.NodeSpec{
			Table:   user.Table,
			Columns: user.Columns,
			ID: &sqlgraph.FieldSpec{
				Type:   field.TypeInt,
				Column: user.FieldID,
			},
		},
		From:   uq.sql,
		Unique: true,
	}
	if unique := uq.unique; unique != nil {
		_spec.Unique = *unique
	}
	if fields := uq.fields; len(fields) > 0 {
		_spec.Node.Columns = make([]string, 0, len(fields))
		_spec.Node.Columns = append(_spec.Node.Columns, user.FieldID)
		for i := range fields {
			if fields[i] != user.FieldID {
				_spec.Node.Columns = append(_spec.Node.Columns, fields[i])
			}
		}
	}
	if ps := uq.predicates; len(ps) > 0 {
		_spec.Predicate = func(selector *sql.Selector) {
			for i := range ps {
				ps[i](selector)
			}
		}
	}
	if limit := uq.limit; limit != nil {
		_spec.Limit = *limit
	}
	if offset := uq.offset; offset != nil {
		_spec.Offset = *offset
	}
	if ps := uq.order; len(ps) > 0 {
		_spec.Order = func(selector *sql.Selector) {
			for i := range ps {
				ps[i](selector)
			}
		}
	}
	return _spec
}

func (uq *UserQuery) sqlQuery(ctx context.Context) *sql.Selector {
	builder := sql.Dialect(uq.driver.Dialect())
	t1 := builder.Table(user.Table)
	columns := uq.fields
	if len(columns) == 0 {
		columns = user.Columns
	}
	selector := builder.Select(t1.Columns(columns...)...).From(t1)
	if uq.sql != nil {
		selector = uq.sql
		selector.Select(selector.Columns(columns...)...)
	}
	if uq.unique != nil && *uq.unique {
		selector.Distinct()
	}
	for _, p := range uq.predicates {
		p(selector)
	}
	for _, p := range uq.order {
		p(selector)
	}
	if offset := uq.offset; offset != nil {
		// limit is mandatory for offset clause. We start
		// with default value, and override it below if needed.
		selector.Offset(*offset).Limit(math.MaxInt32)
	}
	if limit := uq.limit; limit != nil {
		selector.Limit(*limit)
	}
	return selector
}

// UserGroupBy is the group-by builder for User entities.
type UserGroupBy struct {
	config
	fields []string
	fns    []AggregateFunc
	// intermediate query (i.e. traversal path).
	sql  *sql.Selector
	path func(context.Context) (*sql.Selector, error)
}

// Aggregate adds the given aggregation functions to the group-by query.
func (ugb *UserGroupBy) Aggregate(fns ...AggregateFunc) *UserGroupBy {
	ugb.fns = append(ugb.fns, fns...)
	return ugb
}

// Scan applies the group-by query and scans the result into the given value.
func (ugb *UserGroupBy) Scan(ctx context.Context, v interface{}) error {
	query, err := ugb.path(ctx)
	if err != nil {
		return err
	}
	ugb.sql = query
	return ugb.sqlScan(ctx, v)
}

// ScanX is like Scan, but panics if an error occurs.
func (ugb *UserGroupBy) ScanX(ctx context.Context, v interface{}) {
	if err := ugb.Scan(ctx, v); err != nil {
		panic(err)
	}
}

// Strings returns list of strings from group-by.
// It is only allowed when executing a group-by query with one field.
func (ugb *UserGroupBy) Strings(ctx context.Context) ([]string, error) {
	if len(ugb.fields) > 1 {
		return nil, errors.New("ent: UserGroupBy.Strings is not achievable when grouping more than 1 field")
	}
	var v []string
	if err := ugb.Scan(ctx, &v); err != nil {
		return nil, err
	}
	return v, nil
}

// StringsX is like Strings, but panics if an error occurs.
func (ugb *UserGroupBy) StringsX(ctx context.Context) []string {
	v, err := ugb.Strings(ctx)
	if err != nil {
		panic(err)
	}
	return v
}

// String returns a single string from a group-by query.
// It is only allowed when executing a group-by query with one field.
func (ugb *UserGroupBy) String(ctx context.Context) (_ string, err error) {
	var v []string
	if v, err = ugb.Strings(ctx); err != nil {
		return
	}
	switch len(v) {
	case 1:
		return v[0], nil
	case 0:
		err = &NotFoundError{user.Label}
	default:
		err = fmt.Errorf("ent: UserGroupBy.Strings returned %d results when one was expected", len(v))
	}
	return
}

// StringX is like String, but panics if an error occurs.
func (ugb *UserGroupBy) StringX(ctx context.Context) string {
	v, err := ugb.String(ctx)
	if err != nil {
		panic(err)
	}
	return v
}

// Ints returns list of ints from group-by.
// It is only allowed when executing a group-by query with one field.
func (ugb *UserGroupBy) Ints(ctx context.Context) ([]int, error) {
	if len(ugb.fields) > 1 {
		return nil, errors.New("ent: UserGroupBy.Ints is not achievable when grouping more than 1 field")
	}
	var v []int
	if err := ugb.Scan(ctx, &v); err != nil {
		return nil, err
	}
	return v, nil
}

// IntsX is like Ints, but panics if an error occurs.
func (ugb *UserGroupBy) IntsX(ctx context.Context) []int {
	v, err := ugb.Ints(ctx)
	if err != nil {
		panic(err)
	}
	return v
}

// Int returns a single int from a group-by query.
// It is only allowed when executing a group-by query with one field.
func (ugb *UserGroupBy) Int(ctx context.Context) (_ int, err error) {
	var v []int
	if v, err = ugb.Ints(ctx); err != nil {
		return
	}
	switch len(v) {
	case 1:
		return v[0], nil
	case 0:
		err = &NotFoundError{user.Label}
	default:
		err = fmt.Errorf("ent: UserGroupBy.Ints returned %d results when one was expected", len(v))
	}
	return
}

// IntX is like Int, but panics if an error occurs.
func (ugb *UserGroupBy) IntX(ctx context.Context) int {
	v, err := ugb.Int(ctx)
	if err != nil {
		panic(err)
	}
	return v
}

// Float64s returns list of float64s from group-by.
// It is only allowed when executing a group-by query with one field.
func (ugb *UserGroupBy) Float64s(ctx context.Context) ([]float64, error) {
	if len(ugb.fields) > 1 {
		return nil, errors.New("ent: UserGroupBy.Float64s is not achievable when grouping more than 1 field")
	}
	var v []float64
	if err := ugb.Scan(ctx, &v); err != nil {
		return nil, err
	}
	return v, nil
}

// Float64sX is like Float64s, but panics if an error occurs.
func (ugb *UserGroupBy) Float64sX(ctx context.Context) []float64 {
	v, err := ugb.Float64s(ctx)
	if err != nil {
		panic(err)
	}
	return v
}

// Float64 returns a single float64 from a group-by query.
// It is only allowed when executing a group-by query with one field.
func (ugb *UserGroupBy) Float64(ctx context.Context) (_ float64, err error) {
	var v []float64
	if v, err = ugb.Float64s(ctx); err != nil {
		return
	}
	switch len(v) {
	case 1:
		return v[0], nil
	case 0:
		err = &NotFoundError{user.Label}
	default:
		err = fmt.Errorf("ent: UserGroupBy.Float64s returned %d results when one was expected", len(v))
	}
	return
}

// Float64X is like Float64, but panics if an error occurs.
func (ugb *UserGroupBy) Float64X(ctx context.Context) float64 {
	v, err := ugb.Float64(ctx)
	if err != nil {
		panic(err)
	}
	return v
}

// Bools returns list of bools from group-by.
// It is only allowed when executing a group-by query with one field.
func (ugb *UserGroupBy) Bools(ctx context.Context) ([]bool, error) {
	if len(ugb.fields) > 1 {
		return nil, errors.New("ent: UserGroupBy.Bools is not achievable when grouping more than 1 field")
	}
	var v []bool
	if err := ugb.Scan(ctx, &v); err != nil {
		return nil, err
	}
	return v, nil
}

// BoolsX is like Bools, but panics if an error occurs.
func (ugb *UserGroupBy) BoolsX(ctx context.Context) []bool {
	v, err := ugb.Bools(ctx)
	if err != nil {
		panic(err)
	}
	return v
}

// Bool returns a single bool from a group-by query.
// It is only allowed when executing a group-by query with one field.
func (ugb *UserGroupBy) Bool(ctx context.Context) (_ bool, err error) {
	var v []bool
	if v, err = ugb.Bools(ctx); err != nil {
		return
	}
	switch len(v) {
	case 1:
		return v[0], nil
	case 0:
		err = &NotFoundError{user.Label}
	default:
		err = fmt.Errorf("ent: UserGroupBy.Bools returned %d results when one was expected", len(v))
	}
	return
}

// BoolX is like Bool, but panics if an error occurs.
func (ugb *UserGroupBy) BoolX(ctx context.Context) bool {
	v, err := ugb.Bool(ctx)
	if err != nil {
		panic(err)
	}
	return v
}

func (ugb *UserGroupBy) sqlScan(ctx context.Context, v interface{}) error {
	for _, f := range ugb.fields {
		if !user.ValidColumn(f) {
			return &ValidationError{Name: f, err: fmt.Errorf("invalid field %q for group-by", f)}
		}
	}
	selector := ugb.sqlQuery()
	if err := selector.Err(); err != nil {
		return err
	}
	rows := &sql.Rows{}
	query, args := selector.Query()
	if err := ugb.driver.Query(ctx, query, args, rows); err != nil {
		return err
	}
	defer rows.Close()
	return sql.ScanSlice(rows, v)
}

func (ugb *UserGroupBy) sqlQuery() *sql.Selector {
	selector := ugb.sql.Select()
	aggregation := make([]string, 0, len(ugb.fns))
	for _, fn := range ugb.fns {
		aggregation = append(aggregation, fn(selector))
	}
	// If no columns were selected in a custom aggregation function, the default
	// selection is the fields used for "group-by", and the aggregation functions.
	if len(selector.SelectedColumns()) == 0 {
		columns := make([]string, 0, len(ugb.fields)+len(ugb.fns))
		for _, f := range ugb.fields {
			columns = append(columns, selector.C(f))
		}
		columns = append(columns, aggregation...)
		selector.Select(columns...)
	}
	return selector.GroupBy(selector.Columns(ugb.fields...)...)
}

// UserSelect is the builder for selecting fields of User entities.
type UserSelect struct {
	*UserQuery
	// intermediate query (i.e. traversal path).
	sql *sql.Selector
}

// Scan applies the selector query and scans the result into the given value.
func (us *UserSelect) Scan(ctx context.Context, v interface{}) error {
	if err := us.prepareQuery(ctx); err != nil {
		return err
	}
	us.sql = us.UserQuery.sqlQuery(ctx)
	return us.sqlScan(ctx, v)
}

// ScanX is like Scan, but panics if an error occurs.
func (us *UserSelect) ScanX(ctx context.Context, v interface{}) {
	if err := us.Scan(ctx, v); err != nil {
		panic(err)
	}
}

// Strings returns list of strings from a selector. It is only allowed when selecting one field.
func (us *UserSelect) Strings(ctx context.Context) ([]string, error) {
	if len(us.fields) > 1 {
		return nil, errors.New("ent: UserSelect.Strings is not achievable when selecting more than 1 field")
	}
	var v []string
	if err := us.Scan(ctx, &v); err != nil {
		return nil, err
	}
	return v, nil
}

// StringsX is like Strings, but panics if an error occurs.
func (us *UserSelect) StringsX(ctx context.Context) []string {
	v, err := us.Strings(ctx)
	if err != nil {
		panic(err)
	}
	return v
}

// String returns a single string from a selector. It is only allowed when selecting one field.
func (us *UserSelect) String(ctx context.Context) (_ string, err error) {
	var v []string
	if v, err = us.Strings(ctx); err != nil {
		return
	}
	switch len(v) {
	case 1:
		return v[0], nil
	case 0:
		err = &NotFoundError{user.Label}
	default:
		err = fmt.Errorf("ent: UserSelect.Strings returned %d results when one was expected", len(v))
	}
	return
}

// StringX is like String, but panics if an error occurs.
func (us *UserSelect) StringX(ctx context.Context) string {
	v, err := us.String(ctx)
	if err != nil {
		panic(err)
	}
	return v
}

// Ints returns list of ints from a selector. It is only allowed when selecting one field.
func (us *UserSelect) Ints(ctx context.Context) ([]int, error) {
	if len(us.fields) > 1 {
		return nil, errors.New("ent: UserSelect.Ints is not achievable when selecting more than 1 field")
	}
	var v []int
	if err := us.Scan(ctx, &v); err != nil {
		return nil, err
	}
	return v, nil
}

// IntsX is like Ints, but panics if an error occurs.
func (us *UserSelect) IntsX(ctx context.Context) []int {
	v, err := us.Ints(ctx)
	if err != nil {
		panic(err)
	}
	return v
}

// Int returns a single int from a selector. It is only allowed when selecting one field.
func (us *UserSelect) Int(ctx context.Context) (_ int, err error) {
	var v []int
	if v, err = us.Ints(ctx); err != nil {
		return
	}
	switch len(v) {
	case 1:
		return v[0], nil
	case 0:
		err = &NotFoundError{user.Label}
	default:
		err = fmt.Errorf("ent: UserSelect.Ints returned %d results when one was expected", len(v))
	}
	return
}

// IntX is like Int, but panics if an error occurs.
func (us *UserSelect) IntX(ctx context.Context) int {
	v, err := us.Int(ctx)
	if err != nil {
		panic(err)
	}
	return v
}

// Float64s returns list of float64s from a selector. It is only allowed when selecting one field.
func (us *UserSelect) Float64s(ctx context.Context) ([]float64, error) {
	if len(us.fields) > 1 {
		return nil, errors.New("ent: UserSelect.Float64s is not achievable when selecting more than 1 field")
	}
	var v []float64
	if err := us.Scan(ctx, &v); err != nil {
		return nil, err
	}
	return v, nil
}

// Float64sX is like Float64s, but panics if an error occurs.
func (us *UserSelect) Float64sX(ctx context.Context) []float64 {
	v, err := us.Float64s(ctx)
	if err != nil {
		panic(err)
	}
	return v
}

// Float64 returns a single float64 from a selector. It is only allowed when selecting one field.
func (us *UserSelect) Float64(ctx context.Context) (_ float64, err error) {
	var v []float64
	if v, err = us.Float64s(ctx); err != nil {
		return
	}
	switch len(v) {
	case 1:
		return v[0], nil
	case 0:
		err = &NotFoundError{user.Label}
	default:
		err = fmt.Errorf("ent: UserSelect.Float64s returned %d results when one was expected", len(v))
	}
	return
}

// Float64X is like Float64, but panics if an error occurs.
func (us *UserSelect) Float64X(ctx context.Context) float64 {
	v, err := us.Float64(ctx)
	if err != nil {
		panic(err)
	}
	return v
}

// Bools returns list of bools from a selector. It is only allowed when selecting one field.
func (us *UserSelect) Bools(ctx context.Context) ([]bool, error) {
	if len(us.fields) > 1 {
		return nil, errors.New("ent: UserSelect.Bools is not achievable when selecting more than 1 field")
	}
	var v []bool
	if err := us.Scan(ctx, &v); err != nil {
		return nil, err
	}
	return v, nil
}

// BoolsX is like Bools, but panics if an error occurs.
func (us *UserSelect) BoolsX(ctx context.Context) []bool {
	v, err := us.Bools(ctx)
	if err != nil {
		panic(err)
	}
	return v
}

// Bool returns a single bool from a selector. It is only allowed when selecting one field.
func (us *UserSelect) Bool(ctx context.Context) (_ bool, err error) {
	var v []bool
	if v, err = us.Bools(ctx); err != nil {
		return
	}
	switch len(v) {
	case 1:
		return v[0], nil
	case 0:
		err = &NotFoundError{user.Label}
	default:
		err = fmt.Errorf("ent: UserSelect.Bools returned %d results when one was expected", len(v))
	}
	return
}

// BoolX is like Bool, but panics if an error occurs.
func (us *UserSelect) BoolX(ctx context.Context) bool {
	v, err := us.Bool(ctx)
	if err != nil {
		panic(err)
	}
	return v
}

func (us *UserSelect) sqlScan(ctx context.Context, v interface{}) error {
	rows := &sql.Rows{}
	query, args := us.sql.Query()
	if err := us.driver.Query(ctx, query, args, rows); err != nil {
		return err
	}
	defer rows.Close()
	return sql.ScanSlice(rows, v)
}