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Shared utilities for ecto-based sql data layers.
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lib/expr.ex
defmodule AshSql.Expr do
@moduledoc false
alias Ash.Filter
alias Ash.Query.{BooleanExpression, Exists, Not, Ref}
alias Ash.Query.Operator.IsNil
alias Ash.Query.Function.{
Ago,
At,
CompositeType,
Contains,
CountNils,
DateAdd,
DateTimeAdd,
Error,
Fragment,
FromNow,
GetPath,
If,
Lazy,
Length,
Now,
Rem,
Round,
StartOfDay,
StringDowncase,
StringJoin,
StringLength,
StringPosition,
StringSplit,
StringTrim,
Today,
Type
}
require Ecto.Query
defmodule ExprInfo do
@moduledoc false
defstruct has_error?: false
@type t :: %__MODULE__{}
end
def parameterized_type(sql_behaviour, {type, constraints}, _, _location) when type != :array do
sql_behaviour.parameterized_type(type, constraints)
end
def parameterized_type(sql_behaviour, type, constraints, _location) do
sql_behaviour.parameterized_type(type, constraints)
end
def sub_expr?(%{location: {:sub_expr, _}}), do: true
def sub_expr?(_), do: false
def within?(bindings, types) when is_list(types) do
Enum.any?(types, &within?(bindings, &1))
end
def within?(%{location: {:sub_expr, type}}, type), do: true
def within?(%{location: type}, type), do: true
def within?(_, _), do: false
def set_location(%{location: {:sub_expr, _}} = bindings, :sub_expr), do: bindings
def set_location(bindings, :sub_expr) do
Map.update(bindings, :location, {:sub_expr, :select}, &{:sub_expr, &1})
end
def set_location(bindings, location) do
Map.put(bindings, :location, location)
end
def dynamic_expr(query, expr, bindings, embedded? \\ false, type \\ nil, acc \\ %ExprInfo{})
def dynamic_expr(_query, %Filter{expression: nil}, _bindings, _embedded?, _type, acc) do
# a nil filter means everything
{true, acc}
end
def dynamic_expr(query, %Filter{expression: expression}, bindings, embedded?, type, acc) do
dynamic_expr(query, expression, bindings, embedded?, type, acc)
end
def dynamic_expr(_, true, _, _, _, acc), do: {true, acc}
def dynamic_expr(_, false, _, _, _, acc), do: {false, acc}
def dynamic_expr(query, expression, bindings, embedded?, type, acc) do
do_dynamic_expr(query, expression, bindings, embedded?, acc, type)
end
defp do_dynamic_expr(query, expr, bindings, embedded?, acc, type \\ nil) do
case bindings.sql_behaviour.expr(query, expr, bindings, embedded?, acc, type) do
{:ok, expr, acc} -> {expr, acc}
{:error, error} -> {:error, error}
:error -> default_dynamic_expr(query, expr, bindings, embedded?, acc, type)
end
end
defp default_dynamic_expr(_, {:embed, other}, _bindings, _true, acc, _type) do
{other, acc}
end
defp default_dynamic_expr(query, %Not{expression: expression}, bindings, embedded?, acc, _type) do
{new_expression, acc} =
do_dynamic_expr(
query,
expression,
set_location(bindings, :sub_expr),
embedded?,
acc,
:boolean
)
{Ecto.Query.dynamic(not (^new_expression)), acc}
end
defp default_dynamic_expr(
query,
%IsNil{left: left, right: true, embedded?: pred_embedded?},
bindings,
embedded?,
acc,
_type
) do
{left_expr, acc} =
do_dynamic_expr(
query,
left,
set_location(bindings, :sub_expr),
pred_embedded? || embedded?,
acc
)
{Ecto.Query.dynamic(is_nil(^left_expr)), acc}
end
defp default_dynamic_expr(
query,
%IsNil{left: left, right: false, embedded?: pred_embedded?},
bindings,
embedded?,
acc,
_type
) do
{left_expr, acc} =
do_dynamic_expr(
query,
left,
set_location(bindings, :sub_expr),
pred_embedded? || embedded?,
acc
)
{Ecto.Query.dynamic(not is_nil(^left_expr)), acc}
end
defp default_dynamic_expr(
query,
%IsNil{left: left, right: right, embedded?: pred_embedded?},
bindings,
embedded?,
acc,
_type
) do
{left_expr, acc} =
do_dynamic_expr(
query,
left,
set_location(bindings, :sub_expr),
pred_embedded? || embedded?,
acc
)
{right_expr, acc} =
do_dynamic_expr(
query,
right,
set_location(bindings, :sub_expr),
pred_embedded? || embedded?,
acc,
:boolean
)
{Ecto.Query.dynamic(is_nil(^left_expr) == ^right_expr), acc}
end
defp default_dynamic_expr(
_query,
%Lazy{arguments: [{m, f, a}]},
_bindings,
_embedded?,
acc,
_type
) do
{apply(m, f, a), acc}
end
defp default_dynamic_expr(
query,
%Ago{arguments: [left, right], embedded?: pred_embedded?},
bindings,
embedded?,
acc,
_type
)
when is_binary(right) or is_atom(right) do
{left, acc} =
do_dynamic_expr(
query,
left,
set_location(bindings, :sub_expr),
pred_embedded? || embedded?,
acc,
:integer
)
{Ecto.Query.dynamic(
fragment("(?)", datetime_add(^DateTime.utc_now(), ^left * -1, ^to_string(right)))
), acc}
end
defp default_dynamic_expr(
query,
%StartOfDay{arguments: [value], embedded?: pred_embedded?},
bindings,
embedded?,
acc,
type
) do
case value do
%DateTime{} = value ->
dynamic_expr(
query,
DateTime.new!(DateTime.to_date(value), Time.new!(0, 0, 0)),
bindings,
pred_embedded? || embedded?,
type,
acc
)
%Date{} = value ->
dynamic_expr(
query,
DateTime.new!(value, Time.new!(0, 0, 0)),
bindings,
pred_embedded? || embedded?,
type,
acc
)
value ->
{value, acc} = dynamic_expr(query, value, bindings, pred_embedded? || embedded?, nil, acc)
{Ecto.Query.dynamic(fragment("date_trunc('day', ?)", ^value)), acc}
end
end
defp default_dynamic_expr(
query,
%StartOfDay{arguments: [value, time_zone], embedded?: pred_embedded?},
bindings,
embedded?,
acc,
type
) do
{value, acc} =
dynamic_expr(
query,
value,
set_location(bindings, :sub_expr),
pred_embedded? || embedded?,
nil,
acc
)
case value do
%DateTime{} = value ->
new_datetime =
value
|> DateTime.to_date()
|> DateTime.new!(Time.new!(0, 0, 0), time_zone)
dynamic_expr(query, new_datetime, bindings, pred_embedded? || embedded?, type, acc)
%Date{} = value ->
new_datetime = DateTime.new!(value, Time.new!(0, 0, 0), time_zone)
dynamic_expr(query, new_datetime, bindings, pred_embedded? || embedded?, type, acc)
value ->
{Ecto.Query.dynamic(
fragment(
"timezone('UTC', timezone(?, date_trunc('day', timezone(?, ?))))",
^time_zone,
^time_zone,
^value
)
), acc}
end
end
defp default_dynamic_expr(
query,
%At{arguments: [left, right], embedded?: pred_embedded?},
bindings,
embedded?,
acc,
_type
) do
{left, acc} =
do_dynamic_expr(
query,
left,
set_location(bindings, :sub_expr),
pred_embedded? || embedded?,
acc,
:integer
)
{right, acc} =
do_dynamic_expr(
query,
right,
set_location(bindings, :sub_expr),
pred_embedded? || embedded?,
acc,
:integer
)
expr =
if is_integer(right) do
Ecto.Query.dynamic(fragment("(?)[?]", ^left, ^(right + 1)))
else
Ecto.Query.dynamic(fragment("(?)[? + 1]", ^left, ^right))
end
{expr, acc}
end
defp default_dynamic_expr(
query,
%FromNow{arguments: [left, right], embedded?: pred_embedded?},
bindings,
embedded?,
acc,
_type
)
when is_binary(right) or is_atom(right) do
{left, acc} =
do_dynamic_expr(
query,
left,
set_location(bindings, :sub_expr),
pred_embedded? || embedded?,
acc,
:integer
)
{Ecto.Query.dynamic(
fragment("(?)", datetime_add(^DateTime.utc_now(), ^left, ^to_string(right)))
), acc}
end
defp default_dynamic_expr(
query,
%DateTimeAdd{arguments: [datetime, amount, interval], embedded?: pred_embedded?},
bindings,
embedded?,
acc,
_type
)
when is_binary(interval) or is_atom(interval) do
{datetime, acc} =
do_dynamic_expr(
query,
datetime,
set_location(bindings, :sub_expr),
pred_embedded? || embedded?,
acc
)
{amount, acc} =
do_dynamic_expr(
query,
amount,
set_location(bindings, :sub_expr),
pred_embedded? || embedded?,
acc,
:integer
)
{Ecto.Query.dynamic(fragment("(?)", datetime_add(^datetime, ^amount, ^to_string(interval)))),
acc}
end
defp default_dynamic_expr(
query,
%DateAdd{arguments: [date, amount, interval], embedded?: pred_embedded?},
bindings,
embedded?,
acc,
_type
)
when is_binary(interval) or is_atom(interval) do
{date, acc} =
do_dynamic_expr(
query,
date,
set_location(bindings, :sub_expr),
pred_embedded? || embedded?,
acc
)
{amount, acc} =
do_dynamic_expr(
query,
amount,
set_location(bindings, :sub_expr),
pred_embedded? || embedded?,
acc,
:integer
)
{Ecto.Query.dynamic(fragment("(?)", datetime_add(^date, ^amount, ^to_string(interval)))), acc}
end
defp default_dynamic_expr(
query,
%GetPath{
arguments: [
%Ref{attribute: %Ash.Resource.Aggregate{} = aggregate, resource: resource} = left,
right
],
embedded?: pred_embedded?
} = expr,
bindings,
embedded?,
acc,
type
)
when is_list(right) do
case bindings.sql_behaviour.expr(query, expr, bindings, true, acc, type) do
{:ok, expr, acc} ->
{expr, acc}
:error ->
attribute =
case aggregate.field do
nil ->
nil
%{} = field ->
field
field ->
related = Ash.Resource.Info.related(resource, aggregate.relationship_path)
Ash.Resource.Info.attribute(related, field)
end
attribute_type =
if attribute do
attribute.type
end
attribute_constraints =
if attribute do
attribute.constraints
end
{:ok, type, constraints} =
Ash.Query.Aggregate.kind_to_type(aggregate.kind, attribute_type, attribute_constraints)
type
|> Ash.Resource.Info.aggregate_type(aggregate)
|> split_at_paths(constraints, right)
|> Enum.reduce(
do_dynamic_expr(query, left, set_location(bindings, :sub_expr), embedded?, acc),
fn data, {expr, acc} ->
do_get_path(query, expr, data, bindings, embedded?, pred_embedded?, acc)
end
)
end
end
defp default_dynamic_expr(
query,
%GetPath{
arguments: [%Ref{attribute: %{type: type, constraints: constraints}} = left, right],
embedded?: pred_embedded?
} = expr,
bindings,
embedded?,
acc,
_
)
when is_list(right) do
case bindings.sql_behaviour.expr(query, expr, bindings, true, acc, type) do
{:ok, expr, acc} ->
{expr, acc}
:error ->
type
|> split_at_paths(constraints, right)
|> Enum.reduce(
do_dynamic_expr(query, left, set_location(bindings, :sub_expr), embedded?, acc),
fn data, {expr, acc} ->
do_get_path(query, expr, data, bindings, embedded?, pred_embedded?, acc)
end
)
end
end
defp default_dynamic_expr(
query,
%Contains{arguments: [left, %Ash.CiString{} = right], embedded?: pred_embedded?},
bindings,
embedded?,
acc,
type
) do
if bindings.sql_behaviour.ilike?() do
text = escape_contains(right.string)
{left, acc} =
AshSql.Expr.dynamic_expr(
query,
left,
set_location(bindings, :sub_expr),
pred_embedded? || embedded?,
:string,
acc
)
{Ecto.Query.dynamic(ilike(^left, ^text)), acc}
else
do_dynamic_expr(
query,
%Fragment{
embedded?: pred_embedded?,
arguments: [
raw: "#{bindings.sql_behaviour.strpos_function()}((",
expr: left,
raw: "), (",
expr: right,
raw: ")) > 0"
]
},
bindings,
embedded?,
acc,
type
)
end
end
defp default_dynamic_expr(
query,
%CountNils{arguments: [list], embedded?: pred_embedded?},
bindings,
embedded?,
acc,
type
) do
if is_list(list) do
list =
Enum.map(list, fn item ->
%Ash.Query.Operator.IsNil{left: item, right: true}
end)
do_dynamic_expr(
query,
%Fragment{
embedded?: pred_embedded?,
arguments: [
raw: "(SELECT COUNT(*) FROM unnest(",
expr: list,
raw: ") AS item WHERE item IS TRUE)"
]
},
bindings,
embedded?,
acc,
type
)
else
do_dynamic_expr(
query,
%Fragment{
embedded?: pred_embedded?,
arguments: [
raw: "(SELECT COUNT(*) FROM unnest(",
expr: list,
raw: ") AS item WHERE item IS NULL)"
]
},
bindings,
embedded?,
acc,
type
)
end
end
defp default_dynamic_expr(
query,
%Contains{arguments: [left, right], embedded?: pred_embedded?},
bindings,
embedded?,
acc,
_type
)
when is_binary(right) do
text = escape_contains(right)
{left, acc} =
AshSql.Expr.dynamic_expr(
query,
left,
set_location(bindings, :sub_expr),
pred_embedded? || embedded?,
:string,
acc
)
{Ecto.Query.dynamic(like(^left, ^text)), acc}
end
defp default_dynamic_expr(
query,
%Contains{arguments: [left, right], embedded?: pred_embedded?},
bindings,
embedded?,
acc,
type
) do
do_dynamic_expr(
query,
%Fragment{
embedded?: pred_embedded?,
arguments: [
raw: "(#{bindings.sql_behaviour.strpos_function()}((",
expr: left,
raw: "), (",
expr: right,
raw: ")) > 0)"
]
},
bindings,
embedded?,
acc,
type
)
end
defp default_dynamic_expr(
query,
%Length{arguments: [list], embedded?: pred_embedded?},
bindings,
embedded?,
acc,
type
) do
do_dynamic_expr(
query,
%Fragment{
embedded?: pred_embedded?,
arguments: [
raw: "array_length((",
expr: list,
raw: "), 1)"
]
},
bindings,
embedded?,
acc,
type
)
end
defp default_dynamic_expr(
query,
%If{arguments: [condition, when_true, when_false], embedded?: pred_embedded?},
bindings,
embedded?,
acc,
type
) do
{[condition_type, when_true_type, when_false_type], type} =
case determine_types(bindings.sql_behaviour, If, [condition, when_true, when_false], type) do
{[condition_type, when_true], type} ->
{[condition_type, when_true, when_true], type}
{[condition_type, when_true, when_false], type} ->
{[condition_type, when_true, when_false], type}
{[condition_type, nil, nil], type} ->
{[condition_type, type, type], type}
{[condition_type, when_true, nil], type} ->
{[condition_type, when_true, type], type}
{[condition_type, nil, when_false], type} ->
{[condition_type, type, when_false], type}
{[condition_type, when_true, when_false], type} ->
{[condition_type, when_true, when_false], type}
end
when_true_type = when_true_type || when_false_type || type
when_false_type = when_false_type || when_true_type || type
{condition, acc} =
do_dynamic_expr(
query,
condition,
set_location(bindings, :sub_expr),
pred_embedded? || embedded?,
acc,
condition_type
)
{when_true, acc} =
do_dynamic_expr(
query,
when_true,
set_location(bindings, :sub_expr),
pred_embedded? || embedded?,
acc,
when_true_type
)
{additional_cases, when_false, acc} =
extract_cases(
query,
when_false,
set_location(bindings, :sub_expr),
pred_embedded? || embedded?,
acc,
when_false_type
)
additional_case_fragments =
additional_cases
|> Enum.flat_map(fn {condition, when_true} ->
[
raw: " WHEN ",
casted_expr: condition,
raw: " THEN ",
casted_expr: when_true
]
end)
do_dynamic_expr(
query,
%Fragment{
embedded?: pred_embedded?,
arguments:
[
raw: "(CASE WHEN ",
casted_expr: condition,
raw: " THEN ",
casted_expr: when_true
] ++
additional_case_fragments ++
[
raw: " ELSE ",
casted_expr: when_false,
raw: " END)"
]
},
bindings,
embedded?,
acc,
type
)
end
defp default_dynamic_expr(
query,
%StringJoin{arguments: [values, joiner], embedded?: pred_embedded?},
bindings,
embedded?,
acc,
type
)
when is_list(values) do
do_dynamic_expr(
query,
%Fragment{
embedded?: pred_embedded?,
arguments:
Enum.reduce(values, [raw: "concat_ws(", expr: joiner], fn value, frag_acc ->
frag_acc ++ [raw: ", ", expr: value]
end) ++ [raw: ")"]
},
bindings,
embedded?,
acc,
type
)
end
defp default_dynamic_expr(
query,
%StringJoin{arguments: [values, joiner], embedded?: pred_embedded?},
bindings,
embedded?,
acc,
type
) do
do_dynamic_expr(
query,
%Fragment{
embedded?: pred_embedded?,
arguments: [raw: "array_to_string(", expr: values, raw: ", ", expr: joiner, raw: ")"]
},
bindings,
embedded?,
acc,
type
)
end
defp default_dynamic_expr(
query,
%StringPosition{arguments: [left, right], embedded?: pred_embedded?},
bindings,
embedded?,
acc,
type
) do
do_dynamic_expr(
query,
%Fragment{
embedded?: pred_embedded?,
arguments: [
raw: "#{bindings.sql_behaviour.strpos_function()}((",
expr: left,
raw: "), (",
expr: right,
raw: "))"
]
},
bindings,
embedded?,
acc,
type
)
end
defp default_dynamic_expr(
query,
%Rem{arguments: [left, right], embedded?: pred_embedded?},
bindings,
embedded?,
acc,
type
) do
do_dynamic_expr(
query,
%Fragment{
embedded?: pred_embedded?,
arguments: [
raw: "mod(",
expr: left,
raw: ", ",
expr: right,
raw: ")"
]
},
bindings,
embedded?,
acc,
type
)
end
defp default_dynamic_expr(
query,
%StringSplit{arguments: [string, delimiter, options], embedded?: pred_embedded?},
bindings,
embedded?,
acc,
type
) do
if options[:trim?] do
require_ash_functions!(query, "string_split(..., trim?: true)")
do_dynamic_expr(
query,
%Fragment{
embedded?: pred_embedded?,
arguments: [
raw: "ash_trim_whitespace(string_to_array(",
expr: string,
raw: ", NULLIF(",
expr: delimiter,
raw: ", '')))"
]
},
bindings,
embedded?,
acc,
type
)
else
do_dynamic_expr(
query,
%Fragment{
embedded?: pred_embedded?,
arguments: [
raw: "string_to_array(",
expr: string,
raw: ", NULLIF(",
expr: delimiter,
raw: ", ''))"
]
},
bindings,
embedded?,
acc,
type
)
end
end
defp default_dynamic_expr(
query,
%StringJoin{arguments: [values], embedded?: pred_embedded?},
bindings,
embedded?,
acc,
type
)
when is_list(values) do
do_dynamic_expr(
query,
%Fragment{
embedded?: pred_embedded?,
arguments:
[raw: "concat("] ++
(values
|> Enum.reduce([], fn value, acc ->
acc ++ [expr: value]
end)
|> Enum.intersperse({:raw, ", "})) ++
[raw: ")"]
},
bindings,
embedded?,
acc,
type
)
end
defp default_dynamic_expr(
query,
%StringJoin{arguments: [values], embedded?: pred_embedded?},
bindings,
embedded?,
acc,
type
) do
do_dynamic_expr(
query,
%StringJoin{arguments: [values, ""], embedded?: pred_embedded?},
bindings,
embedded?,
acc,
type
)
end
defp default_dynamic_expr(
query,
%StringLength{arguments: [value], embedded?: pred_embedded?},
bindings,
embedded?,
acc,
type
) do
do_dynamic_expr(
query,
%Fragment{
embedded?: pred_embedded?,
arguments: [raw: "length(normalize(", expr: value, raw: "))"]
},
bindings,
embedded?,
acc,
type
)
end
defp default_dynamic_expr(
query,
%StringDowncase{arguments: [value], embedded?: pred_embedded?},
bindings,
embedded?,
acc,
type
) do
do_dynamic_expr(
query,
%Fragment{
embedded?: pred_embedded?,
arguments: [raw: "lower(", expr: value, raw: ")"]
},
bindings,
embedded?,
acc,
type
)
end
defp default_dynamic_expr(
query,
%StringTrim{arguments: [value], embedded?: pred_embedded?},
bindings,
embedded?,
acc,
type
) do
do_dynamic_expr(
query,
%Fragment{
embedded?: pred_embedded?,
arguments: [
raw: "REGEXP_REPLACE(REGEXP_REPLACE(",
expr: value,
raw: ", '\s+$', ''), '^\s+', '')"
]
},
bindings,
embedded?,
acc,
type
)
end
defp default_dynamic_expr(
query,
%Fragment{arguments: arguments, embedded?: pred_embedded?},
bindings,
embedded?,
acc,
_type
) do
arguments =
case arguments do
[{:raw, raw} | rest] ->
[{:raw, raw} | rest]
arguments ->
[{:raw, ""} | arguments]
end
arguments =
case List.last(arguments) do
nil ->
arguments
{:raw, _} ->
arguments
_ ->
arguments ++ [{:raw, ""}]
end
{params, fragment_data, _, acc} =
Enum.reduce(arguments, {[], [], 0, acc}, fn
{:raw, str}, {params, fragment_data, count, acc} ->
{params, [{:raw, str} | fragment_data], count, acc}
{:casted_expr, dynamic}, {params, fragment_data, count, acc} ->
{item, params, count} =
{{:^, [], [count]}, [{dynamic, :any} | params], count + 1}
{params, [{:expr, item} | fragment_data], count, acc}
{:expr, expr}, {params, fragment_data, count, acc} ->
{dynamic, acc} =
do_dynamic_expr(
query,
expr,
set_location(bindings, :sub_expr),
pred_embedded? || embedded?,
acc
)
{item, params, count} =
{{:^, [], [count]}, [{dynamic, :any} | params], count + 1}
{params, [{:expr, item} | fragment_data], count, acc}
end)
{%Ecto.Query.DynamicExpr{
fun: fn _query ->
{{:fragment, [], Enum.reverse(fragment_data)}, Enum.reverse(params), [], %{}}
end,
binding: [],
file: __ENV__.file,
line: __ENV__.line
}, acc}
end
defp default_dynamic_expr(
query,
%BooleanExpression{op: op, left: left, right: right},
bindings,
embedded?,
acc,
_type
) do
{left_expr, acc} =
do_dynamic_expr(query, left, set_location(bindings, :sub_expr), embedded?, acc, :boolean)
{right_expr, acc} =
do_dynamic_expr(query, right, set_location(bindings, :sub_expr), embedded?, acc, :boolean)
expr =
case op do
:and ->
Ecto.Query.dynamic(^left_expr and ^right_expr)
:or ->
Ecto.Query.dynamic(^left_expr or ^right_expr)
end
{expr, acc}
end
defp default_dynamic_expr(
query,
%Ash.Query.Function.Minus{arguments: [arg], embedded?: pred_embedded?},
bindings,
embedded?,
acc,
type
) do
{[determined_type], type} =
determine_types(bindings.sql_behaviour, Ash.Query.Function.Minus, [arg], type)
{expr, acc} =
do_dynamic_expr(
query,
arg,
set_location(bindings, :sub_expr),
pred_embedded? || embedded?,
acc,
determined_type || type
)
{Ecto.Query.dynamic(-(^expr)), acc}
end
# Honestly we need to either 1. not type cast or 2. build in type compatibility concepts
# instead of `:same` we need an `ANY COMPATIBLE` equivalent.
@cast_operands_for [:<>]
defp default_dynamic_expr(
query,
%mod{
__predicate__?: _,
left: left,
right: right,
embedded?: pred_embedded?,
operator: operator
},
bindings,
embedded?,
acc,
type
) do
{[left_type, right_type], type} =
case operator do
:/ ->
{[{Ash.Type.Decimal, []}, {Ash.Type.Decimal, []}], {Ash.Type.Decimal, []}}
_ ->
determine_types(bindings.sql_behaviour, mod, [left, right], type)
end
{left_expr, acc} =
if left_type &&
(operator in @cast_operands_for || (complex_type?(left_type) && !Ash.Expr.expr?(left))) do
maybe_type_expr(
query,
left,
set_location(bindings, :sub_expr),
pred_embedded? || embedded?,
acc,
left_type
)
else
do_dynamic_expr(
query,
left,
set_location(bindings, :sub_expr),
pred_embedded? || embedded?,
acc,
left_type
)
end
with :in <- operator,
{:ok, item_type} <- extract_multidimensional_array_type(right_type),
{:ok, right} <- extract_list_value(right) do
Enum.reduce(right, {nil, acc}, fn item, {expr, acc} ->
{elem_expr, acc} =
do_dynamic_expr(
query,
item,
set_location(bindings, :sub_expr),
pred_embedded? || embedded?,
acc,
item_type
)
if is_nil(expr) do
{Ecto.Query.dynamic(^left_expr == ^elem_expr), acc}
else
{Ecto.Query.dynamic(^expr or ^left_expr == ^elem_expr), acc}
end
end)
else
_ ->
{right_expr, acc} =
if right_type &&
(operator in @cast_operands_for ||
(complex_type?(right_type) && !Ash.Expr.expr?(right))) do
maybe_type_expr(
query,
right,
set_location(bindings, :sub_expr),
pred_embedded? || embedded?,
acc,
right_type
)
else
do_dynamic_expr(
query,
right,
set_location(bindings, :sub_expr),
pred_embedded? || embedded?,
acc,
right_type
)
end
case operator do
:== ->
{Ecto.Query.dynamic(^left_expr == ^right_expr), acc}
:!= ->
{Ecto.Query.dynamic(^left_expr != ^right_expr), acc}
:> ->
{Ecto.Query.dynamic(^left_expr > ^right_expr), acc}
:< ->
{Ecto.Query.dynamic(^left_expr < ^right_expr), acc}
:>= ->
{Ecto.Query.dynamic(^left_expr >= ^right_expr), acc}
:<= ->
{Ecto.Query.dynamic(^left_expr <= ^right_expr), acc}
:in ->
{Ecto.Query.dynamic(^left_expr in ^right_expr), acc}
:+ ->
{Ecto.Query.dynamic(^left_expr + ^right_expr), acc}
:- ->
{Ecto.Query.dynamic(^left_expr - ^right_expr), acc}
:/ ->
{Ecto.Query.dynamic(^left_expr / ^right_expr), acc}
:* ->
{Ecto.Query.dynamic(^left_expr * ^right_expr), acc}
:<> ->
do_dynamic_expr(
query,
%Fragment{
embedded?: pred_embedded?,
arguments: [
raw: "(",
casted_expr: left_expr,
raw: " || ",
casted_expr: right_expr,
raw: ")"
]
},
bindings,
embedded?,
acc,
type
)
:|| ->
if "ash-functions" in query.__ash_bindings__.sql_behaviour.repo(
query.__ash_bindings__.resource,
:mutate
).installed_extensions() do
do_dynamic_expr(
query,
%Fragment{
embedded?: pred_embedded?,
arguments: [
raw: "ash_elixir_or(",
casted_expr: left_expr,
raw: ", ",
casted_expr: right_expr,
raw: ")"
]
},
bindings,
embedded?,
acc,
type
)
else
if query.__ash_bindings__.sql_behaviour.require_ash_functions_for_or_and_and?() do
require_ash_functions!(query, "||")
end
do_dynamic_expr(
query,
%Ash.Query.Function.Fragment{
embedded?: pred_embedded?,
arguments: [
raw: "(CASE WHEN (",
casted_expr: left_expr,
raw: " = FALSE OR ",
casted_expr: left_expr,
raw: " IS NULL) THEN ",
casted_expr: right_expr,
raw: " ELSE ",
casted_expr: left_expr,
raw: "END)"
]
},
bindings,
embedded?,
acc,
type
)
end
:&& ->
if "ash-functions" in query.__ash_bindings__.sql_behaviour.repo(
query.__ash_bindings__.resource,
:mutate
).installed_extensions() do
do_dynamic_expr(
query,
%Fragment{
embedded?: pred_embedded?,
arguments: [
raw: "ash_elixir_and(",
casted_expr: left_expr,
raw: ", ",
casted_expr: right_expr,
raw: ")"
]
},
bindings,
embedded?,
acc,
type
)
else
if query.__ash_bindings__.sql_behaviour.require_ash_functions_for_or_and_and?() do
require_ash_functions!(query, "&&")
end
do_dynamic_expr(
query,
%Fragment{
embedded?: pred_embedded?,
arguments: [
raw: "(CASE WHEN (",
casted_expr: left_expr,
raw: " = FALSE OR ",
casted_expr: left_expr,
raw: " IS NULL) THEN ",
casted_expr: left_expr,
raw: " ELSE ",
casted_expr: right_expr,
raw: "END)"
]
},
bindings,
embedded?,
acc,
type
)
end
other ->
raise "Operator not implemented #{other}"
end
end
end
defp default_dynamic_expr(query, %MapSet{} = mapset, bindings, embedded?, acc, type) do
do_dynamic_expr(query, Enum.to_list(mapset), bindings, embedded?, acc, type)
end
defp default_dynamic_expr(
query,
%Ash.CiString{string: string} = expression,
bindings,
embedded?,
acc,
type
) do
case query.__ash_bindings__.sql_behaviour.require_extension_for_citext() do
{true, extension} ->
require_extension!(query.__ash_bindings__.resource, extension, expression, query)
do_dynamic_expr(
query,
%Ash.Query.Function.Fragment{arguments: [raw: "(", expr: string, raw: "::citext)"]},
bindings,
embedded?,
acc,
type
)
false ->
do_dynamic_expr(
query,
%Ash.Query.Function.Type{arguments: [string, Ash.Type.CiString, []]},
bindings,
embedded?,
acc,
type
)
end
end
defp default_dynamic_expr(
query,
%Ref{
attribute: %Ash.Query.Calculation{} = calculation,
relationship_path: relationship_path
},
bindings,
embedded?,
acc,
_type
) do
calculation = %{calculation | load: calculation.name}
resource = Ash.Resource.Info.related(bindings.resource, relationship_path)
case Ash.Filter.hydrate_refs(
calculation.module.expression(calculation.opts, calculation.context),
%{
resource: resource,
aggregates: %{},
calculations: %{},
public?: false
}
) do
{:ok, expression} ->
expression =
Ash.Filter.move_to_relationship_path(
expression,
relationship_path
)
expression =
Ash.Actions.Read.add_calc_context_to_filter(
expression,
calculation.context.actor,
calculation.context.authorize?,
calculation.context.tenant,
calculation.context.tracer,
query.__ash_bindings__[:domain],
resource,
parent_stack: query.__ash_bindings__[:parent_resources] || []
)
do_dynamic_expr(
query,
expression,
set_location(bindings, :sub_expr),
embedded?,
acc,
{calculation.type, Map.get(calculation, :constraints, [])}
)
{:error, error} ->
raise """
Failed to hydrate references for resource #{inspect(resource)} in #{inspect(calculation.module.expression(calculation.opts, calculation.context))}
#{inspect(error)}
"""
end
end
defp default_dynamic_expr(
query,
%Ref{
attribute: %Ash.Query.Aggregate{
kind: :exists,
relationship_path: agg_relationship_path,
query: agg_query,
join_filters: join_filters
},
relationship_path: ref_relationship_path
},
bindings,
embedded?,
acc,
type
) do
filter =
if is_nil(agg_query.filter) do
true
else
agg_query.filter
end
do_dynamic_expr(
query,
%Ash.Query.Exists{
path: agg_relationship_path,
expr: filter,
at_path: ref_relationship_path
}
|> Map.put(:__join_filters__, join_filters),
bindings,
embedded?,
acc,
type
)
end
defp default_dynamic_expr(
query,
%Ref{attribute: %Ash.Query.Aggregate{} = aggregate} = ref,
bindings,
_embedded?,
acc,
_type
) do
%{attribute: aggregate} =
ref =
case bindings.aggregate_names[aggregate.name] do
nil ->
ref
name ->
%{ref | attribute: %{aggregate | name: name}}
end
related = Ash.Resource.Info.related(query.__ash_bindings__.resource, ref.relationship_path)
first_optimized_aggregate? =
AshSql.Aggregate.optimizable_first_aggregate?(related, aggregate, query)
{ref_binding, field_name, value, acc} =
if first_optimized_aggregate? do
ref = %{
ref
| attribute: %Ash.Resource.Attribute{name: :fake},
relationship_path: ref.relationship_path ++ aggregate.relationship_path
}
ref_binding = ref_binding(ref, bindings)
if is_nil(ref_binding) do
raise "Error while building reference: #{inspect(ref)}"
end
resource =
Ash.Resource.Info.related(query.__ash_bindings__.resource, ref.relationship_path)
ref =
%Ash.Query.Ref{
attribute:
AshSql.Aggregate.aggregate_field(
aggregate,
resource,
query
),
relationship_path: ref.relationship_path,
resource: query.__ash_bindings__.resource
}
ref =
Ash.Actions.Read.add_calc_context_to_filter(
ref,
Map.get(aggregate.context, :actor),
Map.get(aggregate.context, :authorize?),
Map.get(aggregate.context, :tenant),
Map.get(aggregate.context, :tracer),
query.__ash_bindings__[:domain],
resource,
parent_stack: query.__ash_bindings__[:parent_resources] || []
)
{value, acc} = do_dynamic_expr(query, ref, query.__ash_bindings__, false, acc)
case aggregate.field do
%{name: name} -> name
field -> field
end
{ref_binding, aggregate.field, value, acc}
else
ref_binding = ref_binding(ref, bindings)
if is_nil(ref_binding) do
raise "Error while building reference: #{inspect(ref)}"
end
{ref_binding, aggregate.name, nil, acc}
end
field_name =
if is_binary(field_name) do
new_field_name =
query.__ash_bindings__.aggregate_names[field_name]
unless new_field_name do
raise "Unbound aggregate field: #{inspect(field_name)}"
end
new_field_name
else
field_name
end
expr =
if value do
value
else
if query.__ash_bindings__[:parent?] &&
ref_binding not in List.wrap(bindings[:lateral_join_bindings]) do
if bindings[:parent?] do
Ecto.Query.dynamic(field(parent_as(^ref_binding), ^field_name))
else
Ecto.Query.dynamic(field(as(^ref_binding), ^field_name))
end
else
if bindings[:parent?] do
Ecto.Query.dynamic(field(parent_as(^ref_binding), ^field_name))
else
Ecto.Query.dynamic(field(as(^ref_binding), ^field_name))
end
end
end
type =
parameterized_type(
bindings.sql_behaviour,
aggregate.type,
aggregate.constraints,
:expr
)
validate_type!(query, type, ref)
coalesced =
if is_nil(aggregate.default_value) do
expr
else
if type do
typed_default =
query.__ash_bindings__.sql_behaviour.type_expr(aggregate.default_value, type)
Ecto.Query.dynamic(coalesce(^expr, ^typed_default))
else
Ecto.Query.dynamic(coalesce(^expr, ^aggregate.default_value))
end
end
if type do
{query.__ash_bindings__.sql_behaviour.type_expr(coalesced, type), acc}
else
{coalesced, acc}
end
end
defp default_dynamic_expr(
query,
%Ash.CustomExpression{expression: expr},
bindings,
embedded?,
acc,
type
) do
do_dynamic_expr(query, expr, bindings, embedded?, acc, type)
end
defp default_dynamic_expr(
query,
%Round{arguments: [num | rest], embedded?: pred_embedded?},
bindings,
embedded?,
acc,
_type
) do
precision = Enum.at(rest, 0) || 1
frag =
%Fragment{
embedded?: pred_embedded?,
arguments: [
raw: "ROUND(",
expr: num,
raw: ", ",
expr: precision,
raw: ")"
]
}
do_dynamic_expr(query, frag, bindings, pred_embedded? || embedded?, acc)
end
defp default_dynamic_expr(
query,
%Type{
arguments: [
%Type{arguments: [arg1 | _]},
type,
constraints
]
} = type_expr,
bindings,
embedded?,
acc,
type
) do
do_dynamic_expr(
query,
%{type_expr | arguments: [arg1, type, constraints]},
bindings,
embedded?,
acc,
type
)
end
defp default_dynamic_expr(
query,
%Type{arguments: [arg1, arg2, constraints]},
bindings,
embedded?,
acc,
_type
) do
arg2 = Ash.Type.get_type(arg2)
arg1 = maybe_uuid_to_binary(arg2, arg1, arg1)
type =
parameterized_type(
bindings.sql_behaviour,
arg2,
constraints,
:expr
)
if type do
bindings =
case arg1 do
%Ash.Query.Ref{} ->
Map.put(bindings, :no_cast?, true)
_ ->
bindings
end
{expr, acc} = do_dynamic_expr(query, arg1, bindings, embedded?, acc, {arg2, constraints})
case {type, expr} do
{{:parameterized, Ash.Type.Map.EctoType, []}, %Ecto.Query.DynamicExpr{}} ->
{expr, acc}
{{:parameterized, {Ash.Type.Map.EctoType, []}}, %Ecto.Query.DynamicExpr{}} ->
{expr, acc}
_ ->
{query.__ash_bindings__.sql_behaviour.type_expr(expr, type), acc}
end
else
do_dynamic_expr(query, arg1, bindings, embedded?, acc, arg2)
end
end
defp default_dynamic_expr(
query,
%CompositeType{arguments: [arg1, arg2, constraints], embedded?: pred_embedded?},
bindings,
embedded?,
acc,
_type
)
when is_map(arg1) do
type = Ash.Type.get_type(arg2)
composite_keys = Ash.Type.composite_types(type, constraints)
type =
parameterized_type(
bindings.sql_behaviour,
type,
constraints,
:expr
)
values =
composite_keys
|> Enum.map(fn config ->
key = elem(config, 0)
{:expr, Map.get(arg1, key)}
end)
|> Enum.intersperse({:raw, ","})
frag =
%Fragment{
embedded?: pred_embedded?,
arguments:
[
raw: "ROW("
] ++
values ++
[
raw: ")"
]
}
{frag, acc} =
do_dynamic_expr(query, frag, bindings, embedded?, acc)
{query.__ash_bindings__.sql_behaviour.type_expr(frag, type), acc}
end
defp default_dynamic_expr(
query,
%Now{embedded?: pred_embedded?},
bindings,
embedded?,
acc,
type
) do
do_dynamic_expr(
query,
DateTime.utc_now(),
bindings,
embedded? || pred_embedded?,
acc,
type
)
end
defp default_dynamic_expr(
query,
%Today{embedded?: pred_embedded?},
bindings,
embedded?,
acc,
type
) do
do_dynamic_expr(
query,
Date.utc_today(),
bindings,
embedded? || pred_embedded?,
acc,
type
)
end
defp default_dynamic_expr(
query,
%Ash.Query.Parent{expr: expr},
bindings,
embedded?,
acc,
type
) do
parent? = Map.get(bindings.parent_bindings, :parent_is_parent_as?, true)
new_bindings = Map.put(bindings.parent_bindings, :parent?, parent?)
do_dynamic_expr(
%{
query
| __ash_bindings__: set_location(new_bindings, :sub_expr)
},
expr,
set_location(new_bindings, :sub_expr),
embedded?,
acc,
type
)
end
defp default_dynamic_expr(
query,
%Error{arguments: [exception, input]} = value,
bindings,
embedded?,
acc,
type
) do
require_ash_functions!(query, "error/2")
acc = %{acc | has_error?: true}
unless Keyword.keyword?(input) || is_map(input) do
raise "Input expression to `error` must be a map or keyword list"
end
{encoded, acc} =
if Ash.Expr.expr?(input) do
frag_parts =
Enum.flat_map(input, fn {key, value} ->
if Ash.Expr.expr?(value) do
[
expr: to_string(key),
raw: "::text, ",
expr: value,
raw: ", "
]
else
[
expr: to_string(key),
raw: "::text, ",
expr: value,
raw: "::jsonb, "
]
end
end)
frag_parts =
List.update_at(frag_parts, -1, fn {:raw, text} ->
{:raw, String.trim_trailing(text, ", ") <> "))"}
end)
do_dynamic_expr(
query,
%Fragment{
embedded?: false,
arguments:
[
raw: "jsonb_build_object('exception', ",
expr: inspect(exception),
raw: "::text, 'input', jsonb_build_object("
] ++
frag_parts
},
bindings,
embedded?,
acc
)
else
{Jason.encode!(%{exception: inspect(exception), input: Map.new(input)}), acc}
end
if type do
# This is a type hint, if we're raising an error, we tell it what the value
# type *would* be in this expression so that we can return a "NULL" of that type
# its weird, but there isn't any other way that I can tell :)
validate_type!(query, type, value)
type =
parameterized_type(
bindings.sql_behaviour,
type,
[],
:expr
)
if type do
dynamic = Ecto.Query.dynamic(type(fragment("NULL"), ^type))
{Ecto.Query.dynamic(fragment("ash_raise_error(?::jsonb, ?)", ^encoded, ^dynamic)), acc}
else
{Ecto.Query.dynamic(fragment("ash_raise_error(?::jsonb)", ^encoded)), acc}
end
else
{Ecto.Query.dynamic(fragment("ash_raise_error(?::jsonb)", ^encoded)), acc}
end
end
defp default_dynamic_expr(
query,
%Exists{at_path: at_path, path: [first | rest], expr: expr} = exists,
bindings,
_embedded?,
acc,
_type
) do
resource = Ash.Resource.Info.related(bindings.resource, at_path)
first_relationship = Ash.Resource.Info.relationship(resource, first)
unless first_relationship do
raise Ash.Error.Framework.AssumptionFailed,
message: """
Unknown relationship #{inspect(bindings.resource)}.#{first}
in exists expression: `#{inspect(exists)}`
"""
end
filter = Ash.Filter.move_to_relationship_path(expr, rest)
filter =
exists
|> Map.get(:__join_filters__, %{})
|> Map.fetch([first_relationship.name])
|> case do
{:ok, join_filter} ->
Ash.Query.BooleanExpression.optimized_new(
:and,
filter,
Ash.Filter.move_to_relationship_path(
join_filter,
rest ++ [first_relationship.name]
)
)
:error ->
filter
end
filter =
exists
|> Map.get(:__join_filters__, %{})
|> Map.delete([first_relationship.name])
|> Enum.reduce(filter, fn {path, path_filter}, filter ->
path = Enum.drop(path, 1)
parent_path = :lists.droplast(path)
Ash.Query.BooleanExpression.optimized_new(
:and,
filter,
Ash.Filter.move_to_relationship_path(path_filter, path)
)
|> Ash.Filter.map(fn
%Ash.Query.Parent{expr: expr} ->
{:halt, Ash.Filter.move_to_relationship_path(expr, parent_path)}
other ->
other
end)
end)
query =
if first_relationship.type == :many_to_many do
put_in(query.__ash_bindings__[:lateral_join_bindings], [:join_source])
|> AshSql.Bindings.explicitly_set_binding(
%{
type: :left,
path: [first_relationship.join_relationship]
},
:join_source
)
else
query
end
{:ok, subquery} =
AshSql.Join.related_subquery(first_relationship, query,
filter: filter,
filter_subquery?: true,
sort?: Map.get(first_relationship, :from_many?),
start_bindings_at: 1,
select_star?: !Map.get(first_relationship, :manual),
in_group?: true,
parent_resources: [
query.__ash_bindings__.resource
| query.__ash_bindings__[:parent_resources] || []
],
return_subquery?: true,
on_subquery: fn subquery ->
subquery =
Ecto.Query.from(row in subquery, select: row)
|> Map.put(:__ash_bindings__, subquery.__ash_bindings__)
cond do
Map.get(first_relationship, :manual) ->
{module, opts} = first_relationship.manual
source_binding =
ref_binding(
%Ref{
attribute:
Ash.Resource.Info.attribute(resource, first_relationship.source_attribute),
relationship_path: at_path,
resource: resource
},
bindings
)
{:ok, subquery} =
apply(
module,
query.__ash_bindings__.sql_behaviour.manual_relationship_subquery_function(),
[
opts,
source_binding,
1,
subquery
]
)
subquery
Map.get(first_relationship, :no_attributes?) ->
subquery
first_relationship.type == :many_to_many ->
source_ref =
ref_binding(
%Ref{
attribute:
Ash.Resource.Info.attribute(resource, first_relationship.source_attribute),
relationship_path: at_path,
resource: resource
},
bindings
)
through_relationship =
Ash.Resource.Info.relationship(resource, first_relationship.join_relationship)
{:ok, through} =
AshSql.Join.related_subquery(through_relationship, query)
Ecto.Query.from(destination in subquery,
join: through in ^through,
as: ^:join_source,
on:
field(through, ^first_relationship.destination_attribute_on_join_resource) ==
field(destination, ^first_relationship.destination_attribute),
on:
field(parent_as(^source_ref), ^first_relationship.source_attribute) ==
field(through, ^first_relationship.source_attribute_on_join_resource)
)
true ->
source_ref =
ref_binding(
%Ref{
attribute:
Ash.Resource.Info.attribute(resource, first_relationship.source_attribute),
relationship_path: at_path,
resource: resource
},
bindings
)
Ecto.Query.from(destination in subquery,
where:
field(parent_as(^source_ref), ^first_relationship.source_attribute) ==
field(destination, ^first_relationship.destination_attribute)
)
end
end
)
{Ecto.Query.dynamic(exists(subquery)), acc}
end
defp default_dynamic_expr(
_query,
%Ref{
attribute: %Ash.Query.CombinationAttr{
name: name
}
},
bindings,
_embedded?,
acc,
_expr_type
) do
ref_binding = bindings.root_binding
dynamic =
if bindings[:parent?] &&
ref_binding not in List.wrap(bindings[:lateral_join_bindings]) do
Ecto.Query.dynamic(field(parent_as(^ref_binding), ^name))
else
Ecto.Query.dynamic(field(as(^ref_binding), ^name))
end
{dynamic, acc}
end
defp default_dynamic_expr(
query,
%Ref{
attribute: %Ash.Resource.Attribute{
name: name,
type: attr_type,
constraints: constraints
}
} = ref,
bindings,
_embedded?,
acc,
expr_type
) do
ref_binding = ref_binding(ref, bindings)
if is_nil(ref_binding) do
raise "Error while building reference: #{inspect(ref)}"
end
constraints =
if attr_type do
constraints
end
type =
if !bindings[:no_cast?] do
parameterized_type(
bindings.sql_behaviour,
attr_type || expr_type,
constraints,
:expr
)
end
expr =
case type do
nil ->
# magic atoms FTW
if query.__ash_bindings__[:parent?] &&
ref_binding not in List.wrap(bindings[:lateral_join_bindings]) do
Ecto.Query.dynamic(field(parent_as(^ref_binding), ^name))
else
Ecto.Query.dynamic(field(as(^ref_binding), ^name))
end
type ->
validate_type!(query, type, ref)
ref_dynamic =
if query.__ash_bindings__[:parent?] &&
ref_binding not in List.wrap(bindings[:lateral_join_bindings]) do
Ecto.Query.dynamic(field(parent_as(^ref_binding), ^name))
else
Ecto.Query.dynamic(field(as(^ref_binding), ^name))
end
query.__ash_bindings__.sql_behaviour.type_expr(ref_dynamic, type)
end
{expr, acc}
end
defp default_dynamic_expr(
query,
%Ref{attribute: %Ash.Resource.Aggregate{name: name}} = ref,
bindings,
_embedded?,
acc,
_expr_type
) do
ref_binding = ref_binding(ref, bindings)
if is_nil(ref_binding) do
raise "Error while building reference: #{inspect(ref)}"
end
expr =
if query.__ash_bindings__[:parent?] &&
ref_binding not in List.wrap(bindings[:lateral_join_bindings]) do
Ecto.Query.dynamic(field(parent_as(^ref_binding), ^name))
else
Ecto.Query.dynamic(field(as(^ref_binding), ^name))
end
{expr, acc}
end
defp default_dynamic_expr(_query, %Ash.Vector{} = value, _bindings, _embedded?, acc, _type) do
{value, acc}
end
defp default_dynamic_expr(query, value, bindings, embedded?, acc, type)
when is_map(value) and not is_struct(value) do
if (within?(bindings, :select) && sub_expr?(bindings)) ||
(within?(bindings, [:update, :aggregate]) && Ash.Expr.expr?(value)) do
elements =
value
|> Enum.flat_map(fn {key, list_item} ->
list_item = reverse_engineer_type(list_item)
if is_atom(key) do
[
{:expr, %Ash.Query.Function.Type{arguments: [key, :atom, []]}},
[
{:raw, "("},
{:expr, list_item},
{:raw, ")"}
]
]
else
[
{:expr, %Ash.Query.Function.Type{arguments: [key, :string, []]}},
[{:raw, "("}, {:expr, list_item}, {:raw, ")"}]
]
end
end)
|> Enum.intersperse({:raw, ","})
|> List.flatten()
do_dynamic_expr(
query,
%Fragment{
embedded?: embedded?,
arguments:
squash_raw(
[
raw: "jsonb_build_object("
] ++ elements ++ [raw: ")"]
)
},
bindings,
embedded?,
acc,
type
)
else
if bindings[:location] == :select do
Enum.reduce(value, {%{}, acc}, fn {key, value}, {map, acc} ->
{value, acc} = do_dynamic_expr(query, value, bindings, embedded?, acc)
{Map.put(map, key, value), acc}
end)
else
{value, acc}
end
end
end
defp default_dynamic_expr(query, other, bindings, true, acc, type) do
if other && is_atom(other) && !is_boolean(other) do
{to_string(other), acc}
else
if Ash.Expr.expr?(other) do
if is_list(other) do
list_expr(query, other, bindings, true, acc, type)
else
case bindings.sql_behaviour.expr(query, other, bindings, true, acc, type) do
{:ok, expr, acc} ->
{expr, acc}
{:error, error} ->
raise "Error while building expression: #{error}"
:error ->
raise "Unsupported expression in #{bindings.sql_behaviour} query: #{inspect(other, structs: false)}"
end
end
else
maybe_sanitize_list(query, other, bindings, true, acc, type)
end
end
end
defp default_dynamic_expr(query, value, bindings, embedded?, acc, {:in, type})
when is_list(value) do
list_expr(query, value, bindings, embedded?, acc, {:array, type})
end
defp default_dynamic_expr(query, value, bindings, embedded?, acc, type)
when not is_nil(value) and is_atom(value) and not is_boolean(value) do
do_dynamic_expr(query, to_string(value), bindings, embedded?, acc, type)
end
defp default_dynamic_expr(_, nil, _, _, acc, _) do
{Ecto.Query.dynamic(fragment("NULL")), acc}
end
defp default_dynamic_expr(query, value, bindings, false, acc, type)
when type == nil or type == :any do
if is_list(value) do
list_expr(query, value, bindings, false, acc, type)
else
maybe_sanitize_list(query, value, bindings, true, acc, type)
end
end
defp default_dynamic_expr(query, value, bindings, false, acc, type) do
if Ash.Expr.expr?(value) do
if is_list(value) do
list_expr(query, value, bindings, false, acc, type)
else
case bindings.sql_behaviour.expr(query, value, bindings, false, acc, type) do
{:ok, expr, acc} ->
{expr, acc}
{:error, error} ->
raise "Error while building expression: #{error}"
:error ->
raise "Unsupported expression in #{bindings.sql_behaviour} query: #{inspect(value, structs: false)}"
end
end
else
case maybe_sanitize_list(query, value, bindings, true, acc, type) do
{^value, acc} ->
if type do
type =
parameterized_type(
bindings.sql_behaviour,
type,
[],
:expr
)
if type do
validate_type!(query, type, value)
{query.__ash_bindings__.sql_behaviour.type_expr(value, type), acc}
else
{value, acc}
end
else
{value, acc}
end
{value, acc} ->
{value, acc}
end
end
end
defp extract_list_value(value) when is_list(value), do: {:ok, value}
defp extract_list_value(%MapSet{} = value), do: {:ok, value}
defp extract_list_value(%Ash.Query.Function.Type{arguments: [value | _]}) when is_list(value),
do: {:ok, value}
defp extract_list_value(_value), do: :error
defp extract_multidimensional_array_type({{:array, {:array, type}}, constraints}) do
{:ok, {{:array, type}, constraints[:items] || []}}
end
defp extract_multidimensional_array_type({{:array, type}, constraints}) do
with true <- Ash.Type.ash_type?(type),
{:array, _} <- Ash.Type.storage_type(type, constraints[:items] || []) do
{:ok, {type, constraints[:items] || []}}
else
_ -> :error
end
end
defp extract_multidimensional_array_type(_), do: :error
defp squash_raw(list, trail \\ [])
defp squash_raw([], trail), do: Enum.reverse(trail)
defp squash_raw([{:raw, left}, {:raw, right} | rest], trail) do
squash_raw([{:raw, left <> right} | rest], trail)
end
defp squash_raw([other | rest], trail), do: squash_raw(rest, [other | trail])
# I literally hate this
defp reverse_engineer_type(value) do
case value do
%Type{} = value ->
value
list_item when is_integer(list_item) ->
%Type{arguments: [list_item, :integer, []]}
list_item when is_float(list_item) ->
%Type{arguments: [list_item, :float, []]}
list_item when is_boolean(list_item) ->
%Type{arguments: [list_item, :boolean, []]}
list_item when is_binary(list_item) ->
%Type{arguments: [list_item, :string, []]}
list_item when is_atom(list_item) ->
%Type{arguments: [list_item, :atom, []]}
[] ->
%Type{arguments: [[], {:array, :string}, []]}
[item | _] = list_item ->
%{arguments: [_, type, constraints]} = type_func = reverse_engineer_type(item)
%{type_func | arguments: [list_item, {:array, type}, [items: constraints || []]]}
%{} = list_item ->
%Type{arguments: [list_item, :map, []]}
%Decimal{} = list_item ->
%Type{arguments: [list_item, :decimal, []]}
list_item ->
list_item
end
end
defp extract_cases(
query,
expr,
bindings,
embedded?,
acc,
type,
list_acc \\ []
)
defp extract_cases(
query,
%If{arguments: [condition, when_true, when_false], embedded?: pred_embedded?},
bindings,
embedded?,
acc,
type,
list_acc
) do
{[condition_type, when_true_type, when_false_type], type} =
case determine_types(bindings.sql_behaviour, If, [condition, when_true, when_false], type) do
{[condition_type, when_true], type} ->
{[condition_type, when_true, when_true], type}
{[condition_type, when_true, when_false], type} ->
{[condition_type, when_true, when_false], type}
{[condition_type, nil, nil], type} ->
{[condition_type, type, type], type}
{[condition_type, when_true, nil], type} ->
{[condition_type, when_true, type], type}
{[condition_type, nil, when_false], type} ->
{[condition_type, type, when_false], type}
{[condition_type, when_true, when_false], type} ->
{[condition_type, when_true, when_false], type}
end
{condition, acc} =
do_dynamic_expr(
query,
condition,
set_location(bindings, :sub_expr),
pred_embedded? || embedded?,
acc,
condition_type || type
)
{when_true, acc} =
do_dynamic_expr(
query,
when_true,
set_location(bindings, :sub_expr),
pred_embedded? || embedded?,
acc,
when_true_type || type
)
extract_cases(
query,
when_false,
set_location(bindings, :sub_expr),
embedded?,
acc,
when_false_type || type,
[{condition, when_true} | list_acc]
)
end
defp extract_cases(
query,
other,
bindings,
embedded?,
acc,
type,
list_acc
) do
{expr, acc} =
do_dynamic_expr(
query,
other,
set_location(bindings, :sub_expr),
embedded?,
acc,
type
)
{Enum.reverse(list_acc), expr, acc}
end
defp split_at_paths(type, constraints, next, acc \\ [{:bracket, [], nil, nil}])
defp split_at_paths(_type, _constraints, [], acc) do
acc
end
defp split_at_paths({:array, type}, constraints, [next | rest], [first_acc | rest_acc])
when is_integer(next) do
case first_acc do
{:bracket, path, nil, nil} ->
split_at_paths(type, constraints[:items] || [], rest, [
{:bracket, [next | path], type, constraints}
| rest_acc
])
{:dot, _field, _, _} ->
split_at_paths(type, constraints[:items] || [], rest, [
{:bracket, [next], type, constraints},
first_acc
| rest_acc
])
end
end
defp split_at_paths(type, constraints, [next | rest], [first_acc | rest_acc])
when is_atom(next) or is_binary(next) do
bracket_or_dot =
if type && Ash.Type.composite?(type, constraints) do
:dot
else
:bracket
end
{next, type, constraints} =
cond do
type && Ash.Type.embedded_type?(type) ->
type =
if Ash.Type.NewType.new_type?(type) do
Ash.Type.NewType.subtype_of(type)
else
type
end
%{type: type, constraints: constraints} = Ash.Resource.Info.attribute(type, next)
{next, type, constraints}
type && Ash.Type.composite?(type, constraints) ->
condition =
if is_binary(next) do
fn {name, _type, _constraints} ->
to_string(name) == next
end
else
fn {name, _type, _constraints} ->
name == next
end
end
case Enum.find(Ash.Type.composite_types(type, constraints), condition) do
nil ->
{next, nil, nil}
{_, aliased_as, type, constraints} ->
{aliased_as, type, constraints}
{name, type, constraints} ->
{name, type, constraints}
end
true ->
{next, nil, nil}
end
case bracket_or_dot do
:dot ->
case first_acc do
{:bracket, [], _, _} ->
split_at_paths(type, constraints, rest, [
{bracket_or_dot, [next], type, constraints} | rest_acc
])
{:bracket, path, nil, nil} ->
split_at_paths(type, constraints, rest, [
{bracket_or_dot, [next], type, constraints},
{:bracket, path, nil, nil}
| rest_acc
])
{:dot, _path, _, _} ->
split_at_paths(type, constraints, rest, [
{bracket_or_dot, [next], nil, nil},
first_acc | rest_acc
])
end
:bracket ->
case first_acc do
{:bracket, path, nil, nil} ->
split_at_paths(type, constraints, rest, [
{bracket_or_dot, [next | path], type, constraints}
| rest_acc
])
{:dot, _path, _, _} ->
split_at_paths(type, constraints, rest, [
{bracket_or_dot, [next], nil, nil},
first_acc | rest_acc
])
end
end
end
defp list_requires_encoding?(value) do
!Enum.empty?(value) &&
Enum.any?(value, fn value ->
Ash.Expr.expr?(value) || is_map(value) || is_list(value)
end)
end
defp encode_list(query, value, bindings, embedded?, acc, type) do
first = Enum.at(value, 0)
first_embedded? =
is_struct(first) and Ash.Resource.Info.resource?(first.__struct__) and
Ash.Resource.Info.embedded?(first.__struct__)
is_map? = type in [:map, :jsonb, :json]
if first_embedded? && !is_map? do
{value, acc}
else
value =
if first_embedded? do
{:ok, value} =
Ash.Type.dump_to_embedded({:array, first.__struct__}, value, [])
value
else
value
end
element_type =
case type do
{{:array, type}, _} -> type
{{:in, type}, _} -> type
_ -> nil
end
elements =
Enum.map(value, fn list_item ->
if type do
{:expr, %Ash.Query.Function.Type{arguments: [list_item, element_type, []]}}
else
{:expr, list_item}
end
end)
|> Enum.intersperse({:raw, ","})
if is_map? do
do_dynamic_expr(
query,
%Fragment{
embedded?: embedded?,
arguments:
[
raw: "array_to_json(ARRAY["
] ++ elements ++ [raw: "])"]
},
bindings,
embedded?,
acc,
type
)
else
do_dynamic_expr(
query,
%Fragment{
embedded?: embedded?,
arguments:
[
raw: "ARRAY["
] ++ elements ++ [raw: "]"]
},
bindings,
embedded?,
acc,
type
)
end
end
end
defp list_expr(query, value, bindings, embedded?, acc, type) do
if list_requires_encoding?(value) do
encode_list(query, value, bindings, embedded?, acc, type)
else
type =
case type do
{:array, type} -> type
{:in, type} -> type
_ -> nil
end
{params, exprs, _, acc} =
Enum.reduce(value, {[], [], 0, acc}, fn value, {params, data, count, acc} ->
case do_dynamic_expr(
query,
value,
bindings,
embedded?,
acc,
type
) do
{%Ecto.Query.DynamicExpr{} = dynamic, acc} ->
result =
Ecto.Query.Builder.Dynamic.partially_expand(
:select,
query,
dynamic,
params,
count
)
expr = elem(result, 0)
new_params = elem(result, 1)
new_count = result |> Tuple.to_list() |> List.last()
{new_params, [expr | data], new_count, acc}
{other, acc} ->
{params, [other | data], count, acc}
end
end)
{%Ecto.Query.DynamicExpr{
fun: fn _query ->
{Enum.reverse(exprs), Enum.reverse(params), [], []}
end,
binding: [],
file: __ENV__.file,
line: __ENV__.line
}, acc}
end
end
defp maybe_uuid_to_binary({:array, type}, value, _original_value) when is_list(value) do
Enum.map(value, &maybe_uuid_to_binary(type, &1, &1))
end
defp maybe_uuid_to_binary(type, value, original_value)
when type in [
Ash.Type.UUID.EctoType,
:uuid
] and is_binary(value) do
case Ecto.UUID.dump(value) do
{:ok, encoded} -> encoded
_ -> original_value
end
end
defp maybe_uuid_to_binary(_type, _value, original_value), do: original_value
@doc false
def validate_type!(%{__ash_bindings__: %{resource: resource}} = query, type, context) do
validate_type!(resource, type, context, query)
end
defp validate_type!(resource, type, context, query) do
case query.__ash_bindings__.sql_behaviour.require_extension_for_citext() do
{true, extension} ->
case type do
{:parameterized, AshSql.Type.CiString, _} ->
require_extension!(resource, extension, context, query)
{:parameterized, {AshSql.Type.CiString, _}} ->
require_extension!(resource, extension, context, query)
{:parameterized, {AshPostgres.Type.CiStringWrapper.EctoType, _}} ->
require_extension!(resource, extension, context, query)
{:parameterized, AshPostgres.Type.CiStringWrapper.EctoType, _} ->
require_extension!(resource, extension, context, query)
:ci_string ->
require_extension!(resource, extension, context, query)
:citext ->
require_extension!(resource, extension, context, query)
_ ->
:ok
end
false ->
:ok
end
end
defp maybe_sanitize_list(query, value, bindings, embedded?, acc, type) do
if is_list(value) do
if list_requires_encoding?(value) do
encode_list(query, value, bindings, embedded?, acc, type)
else
value
|> Enum.reduce({[], acc}, fn item, {list, acc} ->
{new_item, acc} =
do_dynamic_expr(query, item, set_location(bindings, :sub_expr), embedded?, acc, type)
{[new_item | list], acc}
end)
|> then(fn {list, acc} ->
{Enum.reverse(list), acc}
end)
end
else
{value, acc}
end
end
@doc false
def ref_binding(
%{attribute: %Ash.Query.Aggregate{name: name}, relationship_path: relationship_path},
bindings
) do
relationship_path = List.wrap(bindings[:refs_at_path]) ++ relationship_path
Enum.find_value(bindings.bindings, fn {binding, data} ->
data.type == :aggregate &&
data.path == relationship_path &&
Enum.any?(data.aggregates, &(&1.name == name)) && binding
end) ||
Enum.find_value(bindings.bindings, fn {binding, data} ->
data.type in [:inner, :left, :root] &&
Ash.SatSolver.synonymous_relationship_paths?(
bindings.resource,
data.path,
relationship_path
) && binding
end)
end
def ref_binding(
%{
attribute: %Ash.Resource.Aggregate{name: name},
relationship_path: relationship_path
},
bindings
) do
relationship_path = List.wrap(bindings[:refs_at_path]) ++ relationship_path
Enum.find_value(bindings.bindings, fn {binding, data} ->
data.type == :aggregate &&
data.path == relationship_path &&
Enum.any?(data.aggregates, &(&1.name == name)) && binding
end)
end
def ref_binding(%{attribute: %Ash.Resource.Attribute{}} = ref, bindings) do
relationship_path = List.wrap(bindings[:refs_at_path]) ++ ref.relationship_path
Enum.find_value(bindings.bindings, fn {binding, data} ->
data.type in [:inner, :left, :root] &&
Ash.SatSolver.synonymous_relationship_paths?(
bindings.resource,
data.path,
relationship_path
) && binding
end)
end
defp do_get_path(
query,
expr,
{:bracket, path, type, constraints},
bindings,
embedded?,
pred_embedded?,
acc
) do
type =
parameterized_type(
bindings.sql_behaviour,
type,
constraints,
:expr
)
path = path |> Enum.reverse() |> Enum.map(&to_string/1)
path_frags =
path
|> Enum.flat_map(fn item ->
[expr: item, raw: "::text,"]
end)
|> :lists.droplast()
|> Enum.concat(raw: "::text)")
{expr, acc} =
do_dynamic_expr(
query,
%Fragment{
embedded?: pred_embedded?,
arguments:
[
raw: "jsonb_extract_path_text(",
expr: expr,
raw: "::jsonb,"
] ++ path_frags
},
bindings,
embedded?,
acc
)
if type do
{query.__ash_bindings__.sql_behaviour.type_expr(expr, type), acc}
else
{expr, acc}
end
end
defp do_get_path(
query,
expr,
{:dot, [field], type, constraints},
bindings,
embedded?,
pred_embedded?,
acc
)
when is_atom(field) do
type =
parameterized_type(
bindings.sql_behaviour,
type,
constraints,
:expr
)
{expr, acc} =
do_dynamic_expr(
query,
%Fragment{
embedded?: pred_embedded?,
arguments: [
raw: "(",
expr: expr,
raw: ").#{field}"
]
},
bindings,
embedded?,
acc
)
if type do
{query.__ash_bindings__.sql_behaviour.type_expr(expr, type), acc}
else
{expr, acc}
end
end
defp require_ash_functions!(query, operator) do
installed_extensions =
query.__ash_bindings__.sql_behaviour.repo(query.__ash_bindings__.resource, :mutate).installed_extensions()
unless "ash-functions" in installed_extensions do
raise """
Cannot use `#{operator}` without adding the extension `ash-functions` to your repo.
Add it to the list in `installed_extensions/0` and generate migrations.
"""
end
end
defp require_extension!(resource, extension, context, query) do
repo = query.__ash_bindings__.sql_behaviour.repo(resource, :mutate)
if extension not in repo.installed_extensions() do
raise Ash.Error.Query.InvalidExpression,
expression: context,
message:
"The #{extension} extension needs to be installed before #{inspect(context)} can be used. Please add \"#{extension}\" to the list of installed_extensions in #{inspect(repo)}."
end
end
@doc false
def set_parent_path(query, parent, parent_is_parent_as? \\ true) do
# This is a stupid name. Its actually the path we *remove* when stepping up a level. I.e the child's path
Map.update!(query, :__ash_bindings__, fn ash_bindings ->
ash_bindings
|> Map.put(
:parent_bindings,
parent.__ash_bindings__ |> Map.put(:parent_is_parent_as?, parent_is_parent_as?)
)
|> Map.put(:parent_resources, [
parent.__ash_bindings__.resource | parent.__ash_bindings__[:parent_resources] || []
])
end)
end
@doc false
def merge_accumulator(
%{__ash_bindings__: %{expression_accumulator: expression_accumulator}} = query,
right
) do
%{
query
| __ash_bindings__: %{
query.__ash_bindings__
| expression_accumulator: merge_accumulator(expression_accumulator, right)
}
}
end
@doc false
def merge_accumulator(%ExprInfo{has_error?: left_has_error?}, %ExprInfo{
has_error?: right_has_error?
}) do
%ExprInfo{has_error?: left_has_error? || right_has_error?}
end
@doc false
def split_statements(nil, _op), do: []
def split_statements([left, right | rest], op) do
split_statements([%BooleanExpression{op: op, left: left, right: right} | rest], op)
end
def split_statements([last], op), do: split_statements(last, op)
def split_statements(other, op), do: do_split_statements(other, op)
def do_split_statements(%Ash.Filter{expression: expression}, op) do
do_split_statements(expression, op)
end
def do_split_statements(
%Not{
expression: %BooleanExpression{op: :or, left: left, right: right}
},
op
) do
do_split_statements(
%BooleanExpression{
op: :and,
left: %Not{expression: left},
right: %Not{expression: right}
},
op
)
end
def do_split_statements(%Not{expression: %Not{expression: expression}}, op) do
do_split_statements(expression, op)
end
def do_split_statements(%BooleanExpression{op: op, left: left, right: right}, op) do
do_split_statements(left, op) ++ do_split_statements(right, op)
end
def do_split_statements(other, _op), do: [other]
defp escape_contains(text) do
"%" <> String.replace(text, ~r/([\%_])/u, "\\\\\\0") <> "%"
end
defp determine_types(sql_behaviour, mod, args, returns) do
{types, new_returns} =
if function_exported?(sql_behaviour, :determine_types, 3) do
case sql_behaviour.determine_types(mod, args, returns) do
{types, returns} -> {types, returns}
types -> {types, nil}
end
else
case sql_behaviour.determine_types(mod, args) do
{types, returns} -> {types, returns}
types -> {types, nil}
end
end
{types, new_returns || returns}
end
defp maybe_type_expr(query, expr, bindings, embedded?, acc, type) do
if type do
{type, constraints} =
case type do
{:array, type} -> {{:array, type}, []}
{type, constraints} -> {type, constraints}
type -> {type, []}
end
do_dynamic_expr(
query,
%Ash.Query.Function.Type{arguments: [expr, type, constraints]},
bindings,
embedded?,
acc,
type
)
else
do_dynamic_expr(query, expr, bindings, embedded?, acc, type)
end
end
@known_types Ash.Type.builtin_types()
defp complex_type?({:array, _}), do: true
defp complex_type?({type, _}) when type in @known_types do
false
end
defp complex_type?(type) when type in @known_types do
false
end
defp complex_type?(_), do: true
end