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<?php |
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/** |
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* Licensed under The GPL-3.0 License |
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* For full copyright and license information, please see the LICENSE.txt |
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* Redistributions of files must retain the above copyright notice. |
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* |
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* @since 2.0.0 |
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* @author Christopher Castro <[email protected]> |
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* @link http://www.quickappscms.org |
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* @license http://opensource.org/licenses/gpl-3.0.html GPL-3.0 License |
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*/ |
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namespace Eav\Model\Behavior\QueryScope; |
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use Cake\ORM\Query; |
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use Cake\ORM\Table; |
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use Eav\Model\Behavior\EavToolbox; |
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use Eav\Model\Behavior\QueryScope\QueryScopeInterface; |
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/** |
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* Used by EAV Behavior to scope SELECT statements. |
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*/ |
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class SelectScope implements QueryScopeInterface |
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{ |
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/** |
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* The table being managed. |
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* |
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* @var \Cake\ORM\Table |
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*/ |
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protected $_table = null; |
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/** |
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* Instance of toolbox. |
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* |
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* @var \Eav\Model\Behavior\EavToolbox |
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*/ |
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protected $_toolbox = null; |
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/** |
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* {@inheritDoc} |
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*/ |
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public function __construct(Table $table) |
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{ |
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$this->_table = $table; |
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$this->_toolbox = new EavToolbox($table); |
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} |
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/** |
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* {@inheritDoc} |
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* |
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* If "SELECT *" is performed |
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* this behavior will fetch all virtual columns its values. |
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* |
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* Column aliasing are fully supported, allowing to create alias for virtual |
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* columns. For instance: |
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* |
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* ```php |
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* $article = $this->Articles->find() |
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* ->select(['aliased_virtual' => 'some_eav_column', 'body']) |
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* ->where(['Articles.id' => $id]) |
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* ->limit(1) |
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* ->first(); |
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* |
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* echo $article->get('aliased_virtual'); |
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* ``` |
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*/ |
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public function scope(Query $query, $bundle = null) |
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{ |
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$this->getVirtualColumns($query, $bundle); |
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return $query; |
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} |
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/** |
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* Gets a list of all virtual columns present in given $query's SELECT clause. |
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* |
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* This method will alter the given Query object removing any virtual column |
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* present in its SELECT clause in order to avoid incorrect SQL statements. |
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* Selected virtual columns should be fetched after query is executed using |
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* mapReduce or similar. |
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* |
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* @param \Cake\ORM\Query $query The query object to be scoped |
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* @param string|null $bundle Consider attributes only for a specific bundle |
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* @return array List of virtual columns names |
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*/ |
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public function getVirtualColumns(Query $query, $bundle = null) |
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{ |
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static $selectedVirtual = []; |
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$cacheKey = spl_object_hash($query) . $bundle; |
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if (isset($selectedVirtual[$cacheKey])) { |
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return $selectedVirtual[$cacheKey]; |
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} |
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$selectClause = (array)$query->clause('select'); |
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if (empty($selectClause)) { |
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$selectedVirtual[$cacheKey] = array_keys($this->_toolbox->attributes($bundle)); |
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return $selectedVirtual[$cacheKey]; |
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} |
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$selectedVirtual[$cacheKey] = []; |
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$virtualColumns = array_keys($this->_toolbox->attributes($bundle)); |
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foreach ($selectClause as $index => $column) { |
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list($table, $column) = pluginSplit($column); |
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if ((empty($table) || $table == $this->_table->alias()) && |
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in_array($column, $virtualColumns) |
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) { |
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$selectedVirtual[$cacheKey][$index] = $column; |
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unset($selectClause[$index]); |
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} |
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} |
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if (empty($selectClause) && !empty($selectedVirtual[$cacheKey])) { |
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$selectClause[] = $this->_table->primaryKey(); |
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} |
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$query->select($selectClause, true); |
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return $selectedVirtual[$cacheKey]; |
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} |
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} |
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quickapps /
cms
