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attachment_query.go
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attachment_query.go
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// Code generated by ent, DO NOT EDIT.
package ent
import (
"context"
"fmt"
"math"
"entgo.io/contrib/entproto/cmd/protoc-gen-ent/internal/todo/ent/attachment"
"entgo.io/contrib/entproto/cmd/protoc-gen-ent/internal/todo/ent/predicate"
"entgo.io/ent/dialect/sql"
"entgo.io/ent/dialect/sql/sqlgraph"
"entgo.io/ent/schema/field"
)
// AttachmentQuery is the builder for querying Attachment entities.
type AttachmentQuery struct {
config
limit *int
offset *int
unique *bool
order []OrderFunc
fields []string
predicates []predicate.Attachment
// intermediate query (i.e. traversal path).
sql *sql.Selector
path func(context.Context) (*sql.Selector, error)
}
// Where adds a new predicate for the AttachmentQuery builder.
func (aq *AttachmentQuery) Where(ps ...predicate.Attachment) *AttachmentQuery {
aq.predicates = append(aq.predicates, ps...)
return aq
}
// Limit adds a limit step to the query.
func (aq *AttachmentQuery) Limit(limit int) *AttachmentQuery {
aq.limit = &limit
return aq
}
// Offset adds an offset step to the query.
func (aq *AttachmentQuery) Offset(offset int) *AttachmentQuery {
aq.offset = &offset
return aq
}
// 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 (aq *AttachmentQuery) Unique(unique bool) *AttachmentQuery {
aq.unique = &unique
return aq
}
// Order adds an order step to the query.
func (aq *AttachmentQuery) Order(o ...OrderFunc) *AttachmentQuery {
aq.order = append(aq.order, o...)
return aq
}
// First returns the first Attachment entity from the query.
// Returns a *NotFoundError when no Attachment was found.
func (aq *AttachmentQuery) First(ctx context.Context) (*Attachment, error) {
nodes, err := aq.Limit(1).All(ctx)
if err != nil {
return nil, err
}
if len(nodes) == 0 {
return nil, &NotFoundError{attachment.Label}
}
return nodes[0], nil
}
// FirstX is like First, but panics if an error occurs.
func (aq *AttachmentQuery) FirstX(ctx context.Context) *Attachment {
node, err := aq.First(ctx)
if err != nil && !IsNotFound(err) {
panic(err)
}
return node
}
// FirstID returns the first Attachment ID from the query.
// Returns a *NotFoundError when no Attachment ID was found.
func (aq *AttachmentQuery) FirstID(ctx context.Context) (id string, err error) {
var ids []string
if ids, err = aq.Limit(1).IDs(ctx); err != nil {
return
}
if len(ids) == 0 {
err = &NotFoundError{attachment.Label}
return
}
return ids[0], nil
}
// FirstIDX is like FirstID, but panics if an error occurs.
func (aq *AttachmentQuery) FirstIDX(ctx context.Context) string {
id, err := aq.FirstID(ctx)
if err != nil && !IsNotFound(err) {
panic(err)
}
return id
}
// Only returns a single Attachment entity found by the query, ensuring it only returns one.
// Returns a *NotSingularError when more than one Attachment entity is found.
// Returns a *NotFoundError when no Attachment entities are found.
func (aq *AttachmentQuery) Only(ctx context.Context) (*Attachment, error) {
nodes, err := aq.Limit(2).All(ctx)
if err != nil {
return nil, err
}
switch len(nodes) {
case 1:
return nodes[0], nil
case 0:
return nil, &NotFoundError{attachment.Label}
default:
return nil, &NotSingularError{attachment.Label}
}
}
// OnlyX is like Only, but panics if an error occurs.
func (aq *AttachmentQuery) OnlyX(ctx context.Context) *Attachment {
node, err := aq.Only(ctx)
if err != nil {
panic(err)
}
return node
}
// OnlyID is like Only, but returns the only Attachment ID in the query.
// Returns a *NotSingularError when more than one Attachment ID is found.
// Returns a *NotFoundError when no entities are found.
func (aq *AttachmentQuery) OnlyID(ctx context.Context) (id string, err error) {
var ids []string
if ids, err = aq.Limit(2).IDs(ctx); err != nil {
return
}
switch len(ids) {
case 1:
id = ids[0]
case 0:
err = &NotFoundError{attachment.Label}
default:
err = &NotSingularError{attachment.Label}
}
return
}
// OnlyIDX is like OnlyID, but panics if an error occurs.
func (aq *AttachmentQuery) OnlyIDX(ctx context.Context) string {
id, err := aq.OnlyID(ctx)
if err != nil {
panic(err)
}
return id
}
// All executes the query and returns a list of Attachments.
func (aq *AttachmentQuery) All(ctx context.Context) ([]*Attachment, error) {
if err := aq.prepareQuery(ctx); err != nil {
return nil, err
}
return aq.sqlAll(ctx)
}
// AllX is like All, but panics if an error occurs.
func (aq *AttachmentQuery) AllX(ctx context.Context) []*Attachment {
nodes, err := aq.All(ctx)
if err != nil {
panic(err)
}
return nodes
}
// IDs executes the query and returns a list of Attachment IDs.
func (aq *AttachmentQuery) IDs(ctx context.Context) ([]string, error) {
var ids []string
if err := aq.Select(attachment.FieldID).Scan(ctx, &ids); err != nil {
return nil, err
}
return ids, nil
}
// IDsX is like IDs, but panics if an error occurs.
func (aq *AttachmentQuery) IDsX(ctx context.Context) []string {
ids, err := aq.IDs(ctx)
if err != nil {
panic(err)
}
return ids
}
// Count returns the count of the given query.
func (aq *AttachmentQuery) Count(ctx context.Context) (int, error) {
if err := aq.prepareQuery(ctx); err != nil {
return 0, err
}
return aq.sqlCount(ctx)
}
// CountX is like Count, but panics if an error occurs.
func (aq *AttachmentQuery) CountX(ctx context.Context) int {
count, err := aq.Count(ctx)
if err != nil {
panic(err)
}
return count
}
// Exist returns true if the query has elements in the graph.
func (aq *AttachmentQuery) Exist(ctx context.Context) (bool, error) {
if err := aq.prepareQuery(ctx); err != nil {
return false, err
}
return aq.sqlExist(ctx)
}
// ExistX is like Exist, but panics if an error occurs.
func (aq *AttachmentQuery) ExistX(ctx context.Context) bool {
exist, err := aq.Exist(ctx)
if err != nil {
panic(err)
}
return exist
}
// Clone returns a duplicate of the AttachmentQuery builder, including all associated steps. It can be
// used to prepare common query builders and use them differently after the clone is made.
func (aq *AttachmentQuery) Clone() *AttachmentQuery {
if aq == nil {
return nil
}
return &AttachmentQuery{
config: aq.config,
limit: aq.limit,
offset: aq.offset,
order: append([]OrderFunc{}, aq.order...),
predicates: append([]predicate.Attachment{}, aq.predicates...),
// clone intermediate query.
sql: aq.sql.Clone(),
path: aq.path,
unique: aq.unique,
}
}
// 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 {
// Contents string `json:"contents,omitempty"`
// Count int `json:"count,omitempty"`
// }
//
// client.Attachment.Query().
// GroupBy(attachment.FieldContents).
// Aggregate(ent.Count()).
// Scan(ctx, &v)
//
func (aq *AttachmentQuery) GroupBy(field string, fields ...string) *AttachmentGroupBy {
grbuild := &AttachmentGroupBy{config: aq.config}
grbuild.fields = append([]string{field}, fields...)
grbuild.path = func(ctx context.Context) (prev *sql.Selector, err error) {
if err := aq.prepareQuery(ctx); err != nil {
return nil, err
}
return aq.sqlQuery(ctx), nil
}
grbuild.label = attachment.Label
grbuild.flds, grbuild.scan = &grbuild.fields, grbuild.Scan
return grbuild
}
// 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 {
// Contents string `json:"contents,omitempty"`
// }
//
// client.Attachment.Query().
// Select(attachment.FieldContents).
// Scan(ctx, &v)
//
func (aq *AttachmentQuery) Select(fields ...string) *AttachmentSelect {
aq.fields = append(aq.fields, fields...)
selbuild := &AttachmentSelect{AttachmentQuery: aq}
selbuild.label = attachment.Label
selbuild.flds, selbuild.scan = &aq.fields, selbuild.Scan
return selbuild
}
func (aq *AttachmentQuery) prepareQuery(ctx context.Context) error {
for _, f := range aq.fields {
if !attachment.ValidColumn(f) {
return &ValidationError{Name: f, err: fmt.Errorf("ent: invalid field %q for query", f)}
}
}
if aq.path != nil {
prev, err := aq.path(ctx)
if err != nil {
return err
}
aq.sql = prev
}
return nil
}
func (aq *AttachmentQuery) sqlAll(ctx context.Context, hooks ...queryHook) ([]*Attachment, error) {
var (
nodes = []*Attachment{}
_spec = aq.querySpec()
)
_spec.ScanValues = func(columns []string) ([]interface{}, error) {
return (*Attachment).scanValues(nil, columns)
}
_spec.Assign = func(columns []string, values []interface{}) error {
node := &Attachment{config: aq.config}
nodes = append(nodes, node)
return node.assignValues(columns, values)
}
for i := range hooks {
hooks[i](ctx, _spec)
}
if err := sqlgraph.QueryNodes(ctx, aq.driver, _spec); err != nil {
return nil, err
}
if len(nodes) == 0 {
return nodes, nil
}
return nodes, nil
}
func (aq *AttachmentQuery) sqlCount(ctx context.Context) (int, error) {
_spec := aq.querySpec()
_spec.Node.Columns = aq.fields
if len(aq.fields) > 0 {
_spec.Unique = aq.unique != nil && *aq.unique
}
return sqlgraph.CountNodes(ctx, aq.driver, _spec)
}
func (aq *AttachmentQuery) sqlExist(ctx context.Context) (bool, error) {
n, err := aq.sqlCount(ctx)
if err != nil {
return false, fmt.Errorf("ent: check existence: %w", err)
}
return n > 0, nil
}
func (aq *AttachmentQuery) querySpec() *sqlgraph.QuerySpec {
_spec := &sqlgraph.QuerySpec{
Node: &sqlgraph.NodeSpec{
Table: attachment.Table,
Columns: attachment.Columns,
ID: &sqlgraph.FieldSpec{
Type: field.TypeString,
Column: attachment.FieldID,
},
},
From: aq.sql,
Unique: true,
}
if unique := aq.unique; unique != nil {
_spec.Unique = *unique
}
if fields := aq.fields; len(fields) > 0 {
_spec.Node.Columns = make([]string, 0, len(fields))
_spec.Node.Columns = append(_spec.Node.Columns, attachment.FieldID)
for i := range fields {
if fields[i] != attachment.FieldID {
_spec.Node.Columns = append(_spec.Node.Columns, fields[i])
}
}
}
if ps := aq.predicates; len(ps) > 0 {
_spec.Predicate = func(selector *sql.Selector) {
for i := range ps {
ps[i](selector)
}
}
}
if limit := aq.limit; limit != nil {
_spec.Limit = *limit
}
if offset := aq.offset; offset != nil {
_spec.Offset = *offset
}
if ps := aq.order; len(ps) > 0 {
_spec.Order = func(selector *sql.Selector) {
for i := range ps {
ps[i](selector)
}
}
}
return _spec
}
func (aq *AttachmentQuery) sqlQuery(ctx context.Context) *sql.Selector {
builder := sql.Dialect(aq.driver.Dialect())
t1 := builder.Table(attachment.Table)
columns := aq.fields
if len(columns) == 0 {
columns = attachment.Columns
}
selector := builder.Select(t1.Columns(columns...)...).From(t1)
if aq.sql != nil {
selector = aq.sql
selector.Select(selector.Columns(columns...)...)
}
if aq.unique != nil && *aq.unique {
selector.Distinct()
}
for _, p := range aq.predicates {
p(selector)
}
for _, p := range aq.order {
p(selector)
}
if offset := aq.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 := aq.limit; limit != nil {
selector.Limit(*limit)
}
return selector
}
// AttachmentGroupBy is the group-by builder for Attachment entities.
type AttachmentGroupBy struct {
config
selector
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 (agb *AttachmentGroupBy) Aggregate(fns ...AggregateFunc) *AttachmentGroupBy {
agb.fns = append(agb.fns, fns...)
return agb
}
// Scan applies the group-by query and scans the result into the given value.
func (agb *AttachmentGroupBy) Scan(ctx context.Context, v interface{}) error {
query, err := agb.path(ctx)
if err != nil {
return err
}
agb.sql = query
return agb.sqlScan(ctx, v)
}
func (agb *AttachmentGroupBy) sqlScan(ctx context.Context, v interface{}) error {
for _, f := range agb.fields {
if !attachment.ValidColumn(f) {
return &ValidationError{Name: f, err: fmt.Errorf("invalid field %q for group-by", f)}
}
}
selector := agb.sqlQuery()
if err := selector.Err(); err != nil {
return err
}
rows := &sql.Rows{}
query, args := selector.Query()
if err := agb.driver.Query(ctx, query, args, rows); err != nil {
return err
}
defer rows.Close()
return sql.ScanSlice(rows, v)
}
func (agb *AttachmentGroupBy) sqlQuery() *sql.Selector {
selector := agb.sql.Select()
aggregation := make([]string, 0, len(agb.fns))
for _, fn := range agb.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(agb.fields)+len(agb.fns))
for _, f := range agb.fields {
columns = append(columns, selector.C(f))
}
columns = append(columns, aggregation...)
selector.Select(columns...)
}
return selector.GroupBy(selector.Columns(agb.fields...)...)
}
// AttachmentSelect is the builder for selecting fields of Attachment entities.
type AttachmentSelect struct {
*AttachmentQuery
selector
// intermediate query (i.e. traversal path).
sql *sql.Selector
}
// Scan applies the selector query and scans the result into the given value.
func (as *AttachmentSelect) Scan(ctx context.Context, v interface{}) error {
if err := as.prepareQuery(ctx); err != nil {
return err
}
as.sql = as.AttachmentQuery.sqlQuery(ctx)
return as.sqlScan(ctx, v)
}
func (as *AttachmentSelect) sqlScan(ctx context.Context, v interface{}) error {
rows := &sql.Rows{}
query, args := as.sql.Query()
if err := as.driver.Query(ctx, query, args, rows); err != nil {
return err
}
defer rows.Close()
return sql.ScanSlice(rows, v)
}