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<?php |
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namespace JeroenDesloovere\SitemapBundle\Item; |
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use JeroenDesloovere\SitemapBundle\Exception\SitemapException; |
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final class ChangeFrequency |
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{ |
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protected const ALWAYS = 'always'; |
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protected const HOURLY = 'hourly'; |
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protected const DAILY = 'daily'; |
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protected const WEEKLY = 'weekly'; |
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protected const MONTHLY = 'monthly'; |
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protected const YEARLY = 'yearly'; |
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protected const NEVER = 'never'; |
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public const POSSIBLE_VALUES = [ |
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self::ALWAYS, |
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self::HOURLY, |
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self::DAILY, |
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self::WEEKLY, |
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self::MONTHLY, |
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self::YEARLY, |
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self::NEVER, |
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]; |
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/** @var string */ |
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private $value; |
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/** |
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* @param string $changeFrequency |
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* @throws \Exception |
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*/ |
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private function __construct(string $changeFrequency) |
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{ |
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if (!in_array($changeFrequency, self::POSSIBLE_VALUES)) { |
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throw SitemapException::forNotExistingChangeFrequency($changeFrequency); |
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} |
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$this->value = $changeFrequency; |
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} |
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public function __toString(): string |
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{ |
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return $this->value; |
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} |
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public function equals(ChangeFrequency $changeFrequency): bool |
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{ |
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if (!($changeFrequency instanceof $this)) { |
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return false; |
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} |
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return $changeFrequency === $this; |
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} |
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public static function always(): self |
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{ |
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return new self(self::ALWAYS); |
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} |
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public function isAlways(): bool |
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{ |
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return $this->equals(self::always()); |
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} |
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public static function hourly(): self |
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{ |
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return new self(self::HOURLY); |
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} |
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public function isHourly(): bool |
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{ |
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return $this->equals(self::hourly()); |
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} |
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public static function daily(): self |
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{ |
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return new self(self::DAILY); |
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} |
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public function isDaily(): bool |
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{ |
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return $this->equals(self::daily()); |
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} |
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public static function weekly(): self |
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{ |
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return new self(self::WEEKLY); |
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} |
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public function isWeekly(): bool |
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{ |
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return $this->equals(self::weekly()); |
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} |
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public static function monthly(): self |
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{ |
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return new self(self::MONTHLY); |
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} |
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public function isMonthly(): bool |
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{ |
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return $this->equals(self::monthly()); |
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} |
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public static function yearly(): self |
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{ |
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return new self(self::YEARLY); |
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} |
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public function isYearly(): bool |
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{ |
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return $this->equals(self::yearly()); |
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} |
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public static function never(): self |
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{ |
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return new self(self::NEVER); |
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} |
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public function isNever(): bool |
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{ |
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return $this->equals(self::never()); |
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} |
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} |
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jeroendesloovere /
sitemap-bundle
