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<?php declare(strict_types=1); |
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/** |
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* Spiral Framework. |
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* |
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* @license MIT |
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* @author Anton Titov (Wolfy-J) |
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*/ |
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namespace Cycle\Schema\Table; |
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use Cycle\Schema\Definition\Field; |
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use Cycle\Schema\Exception\ColumnException; |
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use Spiral\Database\Schema\AbstractColumn; |
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/** |
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* Carries information about column definition. |
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* |
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* @internal |
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*/ |
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final class Column |
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{ |
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// default column value |
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public const OPT_DEFAULT = 'default'; |
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// column can automatically define default value |
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public const OPT_CAST_DEFAULT = 'castDefault'; |
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// column can be nullable |
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public const OPT_NULLABLE = 'nullable'; |
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// provides ability to define complex types using string notation, i.e. string(32) |
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private const DEFINITION = '/(?P<type>[a-z]+)(?: *\((?P<options>[^\)]+)\))?/i'; |
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/** @var Field */ |
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private $field; |
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/** @var string */ |
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private $type; |
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/** @var array */ |
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private $typeOptions = []; |
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/** |
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* @return string |
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*/ |
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public function getName(): string |
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{ |
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return $this->field->getColumn(); |
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} |
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/** |
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* Get column type. |
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* |
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* @return string |
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*/ |
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public function getType(): string |
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{ |
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return $this->type; |
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} |
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/** |
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* @return bool |
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*/ |
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public function isPrimary(): bool |
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{ |
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return $this->field->isPrimary() || in_array($this->type, ['primary', 'bigPrimary']); |
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} |
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/** |
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* @return bool |
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*/ |
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public function isNullable(): bool |
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{ |
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if ($this->hasDefault() && $this->getDefault() === null) { |
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return true; |
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} |
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return $this->hasOption(self::OPT_NULLABLE) && !$this->isPrimary(); |
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} |
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/** |
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* @return bool |
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*/ |
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public function hasDefault(): bool |
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{ |
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if ($this->isPrimary()) { |
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return false; |
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} |
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return $this->hasOption(self::OPT_DEFAULT); |
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} |
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/** |
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* @return mixed |
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* |
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* @throws ColumnException |
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*/ |
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public function getDefault() |
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{ |
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if (!$this->hasDefault()) { |
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throw new ColumnException("No default value on `{$this->field->getColumn()}`"); |
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} |
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return $this->field->getOptions()->get(self::OPT_DEFAULT); |
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} |
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/** |
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* Render column definition. |
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* |
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* @param AbstractColumn $column |
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* |
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* @throws ColumnException |
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*/ |
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public function render(AbstractColumn $column) |
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{ |
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$column->nullable($this->isNullable()); |
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try { |
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// bypassing call to AbstractColumn->__call method (or specialized column method) |
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call_user_func_array([$column, $this->type], $this->typeOptions); |
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} catch (\Throwable $e) { |
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throw new ColumnException( |
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"Invalid column type definition in '{$column->getTable()}'.'{$column->getName()}'", |
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$e->getCode(), |
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$e |
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); |
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} |
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if ($this->hasDefault() && $this->getDefault() !== null) { |
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$column->defaultValue($this->getDefault()); |
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return; |
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} |
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if ($this->hasOption(self::OPT_CAST_DEFAULT)) { |
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// cast default value |
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$column->defaultValue($this->castDefault($column)); |
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} |
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} |
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/** |
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* @param AbstractColumn $column |
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* @return bool|float|int|string |
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*/ |
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private function castDefault(AbstractColumn $column) |
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{ |
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if (in_array($column->getAbstractType(), ['timestamp', 'datetime', 'time', 'date'])) { |
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return 0; |
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} |
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if ($column->getAbstractType() == 'enum') { |
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// we can use first enum value as default |
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return $column->getEnumValues()[0]; |
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} |
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switch ($column->getType()) { |
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case AbstractColumn::INT: |
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return 0; |
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case AbstractColumn::FLOAT: |
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return 0.0; |
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case AbstractColumn::BOOL: |
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return false; |
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} |
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return ''; |
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} |
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/** |
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* @param string $option |
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* @return bool |
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*/ |
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private function hasOption(string $option): bool |
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{ |
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return $this->field->getOptions()->has($option); |
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} |
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/** |
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* Parse field definition into table definition. |
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* |
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* @param Field $field |
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* @return Column |
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* |
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* @throws ColumnException |
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*/ |
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public static function parse(Field $field): self |
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{ |
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$column = new Column(); |
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$column->field = $field; |
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if (!preg_match(self::DEFINITION, $field->getType(), $type)) { |
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throw new ColumnException("Invalid column type declaration in `{$field->getType()}`"); |
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} |
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$column->type = $type['type']; |
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if (!empty($type['options'])) { |
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$column->typeOptions = array_map('trim', explode(',', $type['options'] ?? '')); |
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} |
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return $column; |
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} |
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} |