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<?php |
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namespace Charcoal\Source; |
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use InvalidArgumentException; |
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// From 'charcoal-core' |
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use Charcoal\Source\Expression; |
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use Charcoal\Source\ExpressionFieldTrait; |
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use Charcoal\Source\OrderInterface; |
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/** |
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* Order Expression |
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* |
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* For sorting the results of a query. |
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* |
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* Possible sorting modes: |
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* 1. Custom — Sort results by a custom expression. |
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* - Requirement: "condition" |
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* 2. Values — Sort results against a defined order. |
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* - Requirements: "values", "property" |
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* - Complementary: "direction" (useful for sorting unlisted results) |
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* 3. Direction — Sort results in ascending or descending order. |
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* - Requirements: "property" |
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* - Complementary: "direction" (ascending, by default) |
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*/ |
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class Order extends Expression implements |
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OrderInterface |
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{ |
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use ExpressionFieldTrait; |
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const MODE_ASC = 'asc'; |
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const MODE_DESC = 'desc'; |
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const MODE_RANDOM = 'rand'; |
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const MODE_VALUES = 'values'; |
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const MODE_CUSTOM = 'custom'; |
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/** |
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* The sort mode. |
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* |
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* @var string|null |
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*/ |
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protected $mode; |
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/** |
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* The values to sort against when {@see self::$mode} is {@see self::MODE_VALUES}. |
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* |
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* @var array|null |
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*/ |
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protected $values; |
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/** |
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* The direction of sorting. |
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* |
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* @var string|null |
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*/ |
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protected $direction; |
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/** |
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* Set the order clause data. |
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* |
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* @param array<string,mixed> $data The expression data; |
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* as an associative array. |
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* @return self |
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*/ |
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public function setData(array $data) |
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{ |
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parent::setData($data); |
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/** @deprecated */ |
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if (isset($data['string'])) { |
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trigger_error( |
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sprintf( |
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'Sort expression option "string" is deprecated in favour of "condition": %s', |
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$data['string'] |
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), |
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E_USER_DEPRECATED |
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); |
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$this->setCondition($data['string']); |
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} |
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/** @deprecated */ |
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if (isset($data['table_name'])) { |
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trigger_error( |
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sprintf( |
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'Sort expression option "table_name" is deprecated in favour of "table": %s', |
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$data['table_name'] |
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), |
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E_USER_DEPRECATED |
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); |
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$this->setTable($data['table_name']); |
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} |
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if (isset($data['table'])) { |
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$this->setTable($data['table']); |
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} |
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if (isset($data['property'])) { |
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$this->setProperty($data['property']); |
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} |
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if (isset($data['direction'])) { |
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$this->setDirection($data['direction']); |
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} |
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if (isset($data['mode'])) { |
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$this->setMode($data['mode']); |
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} |
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if (isset($data['values'])) { |
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$this->setValues($data['values']); |
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if (!isset($data['mode'])) { |
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$this->setMode(self::MODE_VALUES); |
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} |
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} |
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if (isset($data['condition']) || isset($data['string'])) { |
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if (!isset($data['mode'])) { |
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$this->setMode(self::MODE_CUSTOM); |
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} |
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} |
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return $this; |
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} |
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/** |
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* Retrieve the default values for sorting. |
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* |
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* @return array<string,mixed> An associative array. |
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*/ |
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public function defaultData() |
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{ |
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return [ |
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'property' => null, |
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'table' => null, |
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'direction' => null, |
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'mode' => null, |
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'values' => null, |
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'condition' => null, |
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'active' => true, |
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'name' => null, |
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]; |
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} |
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/** |
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* Retrieve the order clause structure. |
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* |
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* @return array<string,mixed> An associative array. |
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*/ |
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public function data() |
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{ |
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return [ |
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'property' => $this->property(), |
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'table' => $this->table(), |
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'direction' => $this->direction(), |
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'mode' => $this->mode(), |
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'values' => $this->values(), |
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'condition' => $this->condition(), |
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'active' => $this->active(), |
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'name' => $this->name(), |
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]; |
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} |
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/** |
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* Set the, pre-defined, sorting mode. |
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* |
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* @param string|null $mode The sorting mode. |
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* @throws InvalidArgumentException If the mode is not a string or invalid. |
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* @return self |
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*/ |
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public function setMode($mode) |
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{ |
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if ($mode === null) { |
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$this->mode = $mode; |
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return $this; |
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} |
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if (!is_string($mode)) { |
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throw new InvalidArgumentException( |
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'Order Mode must be a string.' |
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); |
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} |
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$mode = strtolower($mode); |
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$valid = $this->validModes(); |
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if (!in_array($mode, $valid)) { |
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throw new InvalidArgumentException(sprintf( |
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'Invalid Order Mode. Must be one of "%s"', |
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implode('", "', $valid) |
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)); |
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} |
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if (in_array($mode, [ self::MODE_ASC, self::MODE_DESC ])) { |
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$this->setDirection($mode); |
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} |
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$this->mode = $mode; |
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return $this; |
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} |
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/** |
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* Retrieve the sorting mode. |
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* |
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* @return string|null |
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*/ |
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public function mode() |
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{ |
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return $this->mode; |
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} |
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/** |
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* Set the sorting direction. |
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* |
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* @param string|null $direction The direction to sort on. |
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* @throws InvalidArgumentException If the direction is not a string. |
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* @return self |
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*/ |
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public function setDirection($direction) |
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{ |
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if ($direction === null) { |
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$this->direction = $direction; |
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return $this; |
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} |
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if (!is_string($direction)) { |
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throw new InvalidArgumentException( |
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'Direction must be a string.' |
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); |
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} |
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$this->direction = strtolower($direction) === 'asc' ? 'ASC' : 'DESC'; |
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return $this; |
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} |
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/** |
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* Retrieve the sorting direction. |
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* |
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* @return string|null |
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*/ |
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public function direction() |
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{ |
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return $this->direction; |
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} |
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/** |
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* Set the values to sort against. |
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* |
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* Note: Values are ignored if the mode is not {@see self::MODE_VALUES}. |
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* |
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* @throws InvalidArgumentException If the parameter is not an array or a string. |
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* @param string|array|null $values A list of field values. |
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* If the $values parameter: |
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* - is a string, the string will be split by ",". |
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* - is an array, the values will be used as is. |
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* - any other data type throws an exception. |
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* @return self |
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*/ |
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public function setValues($values) |
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{ |
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if ($values === null) { |
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$this->values = $values; |
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return $this; |
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} |
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if (is_string($values)) { |
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if ($values === '') { |
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throw new InvalidArgumentException( |
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'String values can not be empty.' |
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); |
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} |
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$values = array_map('trim', explode(',', $values)); |
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} |
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if (is_array($values)) { |
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if (empty($values)) { |
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throw new InvalidArgumentException( |
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'Array values can not be empty.' |
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); |
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} |
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$this->values = $values; |
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return $this; |
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} |
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throw new InvalidArgumentException(sprintf( |
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'Order Values must be an array or comma-delimited string, received %s', |
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is_object($values) ? get_class($values) : gettype($values) |
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)); |
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} |
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/** |
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* Determine if the Order expression has values. |
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* |
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* @return boolean |
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*/ |
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public function hasValues() |
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{ |
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return !empty($this->values); |
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} |
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/** |
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* Retrieve the values to sort against. |
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* |
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* @return array|null A list of field values or NULL if no values were assigned. |
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*/ |
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public function values() |
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{ |
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return $this->values; |
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} |
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/** |
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* Retrieve the supported sorting modes. |
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* |
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* @return array |
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*/ |
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protected function validModes() |
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{ |
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return [ |
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self::MODE_DESC, |
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self::MODE_ASC, |
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self::MODE_RANDOM, |
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self::MODE_VALUES, |
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self::MODE_CUSTOM |
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]; |
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} |
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} |
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