File data/src/Field/SqlExpressionField.php

1:	<?php
2:
3:	declare(strict_types=1);
4:
5:	namespace Atk4\Data\Field;
6:
7:	use Atk4\Core\InitializerTrait;
8:	use Atk4\Data\Field;
9:	use Atk4\Data\Model;
10:	use Atk4\Data\Persistence\Sql\Expression;
11:	use Atk4\Data\Persistence\Sql\Expressionable;
12:	use Atk4\Data\Reference;
13:
14:	class SqlExpressionField extends Field
15:	{
16:	use InitializerTrait {
17:	init as private _init;
18:	}
19:
20:	public bool $neverSave = true;
21:	public bool $readOnly = true;
22:
23:	/** @var \Closure(object, Expression): (string\|Expressionable)\|string\|Expressionable Used expression. */
24:	public $expr;
25:
26:	/** @var string Specifies how to aggregate this. */
27:	public $aggregate;
28:
29:	/** @var string */
30:	public $concatSeparator;
31:
32:	/** @var Reference\HasMany\|null When defining as aggregate, this will point to relation object. */
33:	public $aggregateRelation;
34:
35:	/** @var string Specifies which field to use. */
36:	public $field;
37:
38:	#[\Override]
39:	public function useAlias(): bool
40:	{
41:	return true;
42:	}
43:
44:	#[\Override]
45:	public function getDsqlExpression(Expression $expression): Expression
46:	{
47:	$expr = $this->expr;
48:	if ($expr instanceof \Closure) {
49:	$expr = $expr($this->getOwner(), $expression);
50:	}
51:
52:	if (is_string($expr)) {
53:	// if our Model has expr() method (inherited from Persistence\Sql) then use it
54:	if ($this->getOwner()->hasMethod('expr')) {
55:	return $this->getOwner()->expr('([])', [$this->getOwner()->expr($expr)]);
56:	}
57:
58:	// otherwise call it from expression itself
59:	return $expression->expr('([])', [$expression->expr($expr)]);
60:	} elseif ($expr instanceof Expressionable && !$expr instanceof Expression) { // @phpstan-ignore-line
61:	return $expression->expr('[]', [$expr]);
62:	}
63:
64:	return $expr;
65:	}
66:	}
67:

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