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Refactoring retrieveManyToOneRelationshipsStorage signature
This will allow us in the future to build a oneToMany handler for smart eager loading.
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,69 @@ | ||
| <?php | ||
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| namespace TheCodingMachine\TDBM\QueryFactory\SmartEagerLoad; | ||
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| use Doctrine\DBAL\Connection; | ||
| use TheCodingMachine\TDBM\TDBMException; | ||
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| class OneToManyDataLoader | ||
| { | ||
| /** | ||
| * @var Connection | ||
| */ | ||
| private $connection; | ||
| /** | ||
| * @var string | ||
| */ | ||
| private $sql; | ||
| /** | ||
| * @var string | ||
| */ | ||
| private $fkColumn; | ||
| /** | ||
| * @var array<string, array<int, array<string, mixed>>> Array of rows, indexed by foreign key. | ||
| */ | ||
| private $data; | ||
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| public function __construct(Connection $connection, string $sql, string $fkColumn) | ||
| { | ||
| $this->connection = $connection; | ||
| $this->sql = $sql; | ||
| $this->fkColumn = $fkColumn; | ||
| } | ||
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| /** | ||
| * @return array<string, array<string, mixed>> Rows, indexed by ID. | ||
| */ | ||
| private function load(): array | ||
| { | ||
| $results = $this->connection->fetchAll($this->sql); | ||
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| $data = []; | ||
| foreach ($results as $row) { | ||
| $data[$row[$this->fkColumn]][] = $row; | ||
| } | ||
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| return $data; | ||
| } | ||
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| /** | ||
| * Returns the DB row with the given ID. | ||
| * Loads all rows if necessary. | ||
| * Throws an exception if nothing found. | ||
| * | ||
| * @param string $id | ||
| * @return array<string, mixed> | ||
| */ | ||
| public function get(string $id): array | ||
| { | ||
| if ($this->data === null) { | ||
| $this->data = $this->load(); | ||
| } | ||
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| if (!isset($this->data[$id])) { | ||
| return []; | ||
| } | ||
| return $this->data[$id]; | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,52 @@ | ||
| <?php | ||
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| namespace TheCodingMachine\TDBM\Utils; | ||
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| use function array_keys; | ||
| use function count; | ||
| use function implode; | ||
| use function is_array; | ||
| use function range; | ||
| use function var_export; | ||
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| class Psr2Utils | ||
| { | ||
| /** | ||
| * @param mixed $var | ||
| * @param string $indent | ||
| * @return string | ||
| */ | ||
| public static function psr2VarExport($var, string $indent=''): string | ||
| { | ||
| if (is_array($var)) { | ||
| $indexed = array_keys($var) === range(0, count($var) - 1); | ||
| $r = []; | ||
| foreach ($var as $key => $value) { | ||
| $r[] = "$indent " | ||
| . ($indexed ? '' : self::psr2VarExport($key) . ' => ') | ||
| . self::psr2VarExport($value, "$indent "); | ||
| } | ||
| return "[\n" . implode(",\n", $r) . "\n" . $indent . ']'; | ||
| } | ||
| return var_export($var, true); | ||
| } | ||
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| /** | ||
| * @param mixed $var | ||
| * @return string | ||
| */ | ||
| public static function psr2InlineVarExport($var): string | ||
| { | ||
| if (is_array($var)) { | ||
| $indexed = array_keys($var) === range(0, count($var) - 1); | ||
| $r = []; | ||
| foreach ($var as $key => $value) { | ||
| $r[] = ($indexed ? '' : self::psr2InlineVarExport($key) . ' => ') | ||
| . self::psr2InlineVarExport($value); | ||
| } | ||
| return '[' . implode(',', $r) . ']'; | ||
| } | ||
| return var_export($var, true); | ||
| } | ||
| } |
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