1 | <?php |
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2 | /** |
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3 | * Cycle ORM Schema Builder. |
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4 | * |
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5 | * @license MIT |
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6 | * @author Anton Titov (Wolfy-J) |
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7 | */ |
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8 | declare(strict_types=1); |
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9 | |||
10 | namespace Cycle\Schema\Relation; |
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11 | |||
12 | use Cycle\ORM\Relation; |
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13 | use Cycle\Schema\Exception\RelationException; |
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14 | use Cycle\Schema\InversableInterface; |
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15 | use Cycle\Schema\Registry; |
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16 | use Cycle\Schema\Relation\Traits\FieldTrait; |
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17 | use Cycle\Schema\Relation\Traits\ForeignKeyTrait; |
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18 | use Cycle\Schema\RelationInterface; |
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19 | |||
20 | class HasMany extends RelationSchema implements InversableInterface |
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21 | { |
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22 | use FieldTrait, ForeignKeyTrait; |
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23 | |||
24 | // internal relation type |
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25 | protected const RELATION_TYPE = Relation::HAS_MANY; |
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26 | |||
27 | // relation schema options |
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28 | protected const RELATION_SCHEMA = [ |
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29 | // save with parent |
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30 | Relation::CASCADE => true, |
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31 | |||
32 | // do not pre-load relation by default |
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33 | Relation::LOAD => null, |
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34 | |||
35 | // custom where condition |
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36 | Relation::WHERE => [], |
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37 | |||
38 | // not nullable by default |
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39 | Relation::NULLABLE => false, |
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40 | |||
41 | // link to parent entity primary key by default |
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42 | Relation::INNER_KEY => '{source:primaryKey}', |
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43 | |||
44 | // default field name for inner key |
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45 | Relation::OUTER_KEY => '{source:role}_{innerKey}', |
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46 | |||
47 | // rendering options |
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48 | RelationSchema::INDEX_CREATE => true, |
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49 | RelationSchema::FK_CREATE => true, |
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50 | RelationSchema::FK_ACTION => 'CASCADE' |
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51 | ]; |
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52 | |||
53 | /** |
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54 | * @param Registry $registry |
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55 | */ |
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56 | public function compute(Registry $registry) |
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57 | { |
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58 | parent::compute($registry); |
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59 | |||
60 | $source = $registry->getEntity($this->source); |
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61 | $target = $registry->getEntity($this->target); |
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62 | |||
63 | // create target outer field |
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64 | $this->ensureField( |
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65 | $target, |
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66 | $this->options->get(Relation::OUTER_KEY), |
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67 | $this->getField($source, Relation::INNER_KEY), |
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68 | $this->options->get(Relation::NULLABLE) |
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69 | ); |
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70 | } |
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71 | |||
72 | /** |
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73 | * @param Registry $registry |
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74 | */ |
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75 | public function render(Registry $registry) |
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76 | { |
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77 | $source = $registry->getEntity($this->source); |
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78 | $target = $registry->getEntity($this->target); |
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79 | |||
80 | $innerField = $this->getField($source, Relation::INNER_KEY); |
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81 | $outerField = $this->getField($target, Relation::OUTER_KEY); |
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82 | |||
83 | $table = $registry->getTableSchema($target); |
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84 | |||
85 | if ($this->options->get(self::INDEX_CREATE)) { |
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86 | $table->index([$outerField->getColumn()]); |
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87 | } |
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88 | |||
89 | if ($this->options->get(self::FK_CREATE)) { |
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90 | $this->createForeignKey($registry, $source, $target, $innerField, $outerField); |
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91 | } |
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92 | } |
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93 | |||
94 | /** |
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95 | * @param Registry $registry |
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96 | * @return array |
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97 | */ |
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98 | public function inverseTargets(Registry $registry): array |
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99 | { |
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100 | return [ |
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101 | $registry->getEntity($this->target) |
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102 | ]; |
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103 | } |
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104 | |||
105 | /** |
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106 | * @param RelationInterface $relation |
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107 | * @param string $into |
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108 | * @param int|null $load |
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109 | * @return RelationInterface |
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110 | * |
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111 | * @throws RelationException |
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112 | */ |
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113 | public function inverseRelation(RelationInterface $relation, string $into, ?int $load = null): RelationInterface |
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114 | { |
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115 | if (!$relation instanceof BelongsTo && !$relation instanceof RefersTo) { |
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116 | throw new RelationException("HasMany relation can only be inversed into BelongsTo or RefersTo"); |
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117 | } |
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118 | |||
119 | if (!empty($this->options->get(Relation::WHERE))) { |
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120 | throw new RelationException("Unable to inverse HasMany relation with where constrain"); |
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121 | } |
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122 | |||
123 | return $relation->withContext( |
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124 | $into, |
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125 | $this->target, |
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126 | $this->source, |
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127 | $this->options->withOptions([ |
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128 | Relation::LOAD => $load, |
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129 | Relation::INNER_KEY => $this->options->get(Relation::OUTER_KEY), |
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130 | Relation::OUTER_KEY => $this->options->get(Relation::INNER_KEY), |
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131 | ]) |
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132 | ); |
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133 | } |
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134 | } |