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{{/*
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.
*/}}
{{ define "dialect/sql/order/signature" -}}
// OrderFunc applies an ordering on the sql selector.
type OrderFunc func(*sql.Selector, func(string) bool)
{{- end }}
{{ define "dialect/sql/order/func" -}}
{{- $f := $.Scope.Func -}}
func(s *sql.Selector, check func(string) bool) {
for _, f := range fields {
if check(f) {
s.OrderBy(sql.{{ $f }}(f))
} else {
s.AddError(&ValidationError{Name: f, err: fmt.Errorf("invalid field %q for ordering", f)})
}
}
}
{{- end }}
{{/* custom signature for group-by function */}}
{{ define "dialect/sql/group/signature" -}}
type AggregateFunc func(*sql.Selector, func(string) bool) string
{{- end }}
{{ define "dialect/sql/group/as" -}}
func(s *sql.Selector, check func(string) bool) string {
return sql.As(fn(s, check), end)
}
{{- end }}
{{ define "dialect/sql/group/func" -}}
{{- $fn := $.Scope.Func -}}
{{- $withField := $.Scope.WithField -}}
func(s *sql.Selector, {{ if $withField }}check{{ else }}_{{ end }} func(string) bool) string {
{{- if $withField }}
if !check(field) {
s.AddError(&ValidationError{Name: field, err: fmt.Errorf("invalid field %q for grouping", field)})
return ""
}
{{- end }}
return sql.{{ if eq $fn "Mean" }}Avg{{ else }}{{ $fn }}{{ end }}({{ if $withField }}s.C(field){{ else }}"*"{{ end }})
}
{{- end }}
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