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<?php |
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namespace Alpha\Model\Type; |
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use Alpha\Model\ActiveRecord; |
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use Alpha\Util\Service\ServiceFactory; |
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use Alpha\Exception\FailedLookupCreateException; |
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use Alpha\Exception\IllegalArguementException; |
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use Alpha\Exception\AlphaException; |
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use Alpha\Util\Config\ConfigProvider; |
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use Alpha\Util\Logging\Logger; |
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use ReflectionClass; |
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/** |
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* The RelationLookup complex data type. Used to store object2object lookup tables for |
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* MANY-TO-MANY relationships between record objects. |
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* |
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* @since 1.0 |
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* |
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* @author John Collins <[email protected]> |
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* @license http://www.opensource.org/licenses/bsd-license.php The BSD License |
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* @copyright Copyright (c) 2019, John Collins (founder of Alpha Framework). |
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* All rights reserved. |
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* |
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* <pre> |
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* Redistribution and use in source and binary forms, with or |
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* without modification, are permitted provided that the |
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* following conditions are met: |
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* |
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* * Redistributions of source code must retain the above |
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* copyright notice, this list of conditions and the |
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* following disclaimer. |
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* * Redistributions in binary form must reproduce the above |
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* copyright notice, this list of conditions and the |
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* following disclaimer in the documentation and/or other |
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* materials provided with the distribution. |
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* * Neither the name of the Alpha Framework nor the names |
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* of its contributors may be used to endorse or promote |
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* products derived from this software without specific |
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* prior written permission. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND |
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* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, |
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* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR |
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE |
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* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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* </pre> |
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*/ |
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class RelationLookup extends ActiveRecord implements TypeInterface |
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{ |
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/** |
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* The ID of the left business object in the relation. |
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* |
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* @var \Alpha\Model\Type\Integer |
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* |
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* @since 1.0 |
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*/ |
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protected $leftID; |
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/** |
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* The ID of the right business object in the relation. |
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* |
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* @var \Alpha\Model\Type\Integer |
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* |
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* @since 1.0 |
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*/ |
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protected $rightID; |
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/** |
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* The name of the left business object class in the relation. |
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* |
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* @var string |
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* |
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* @since 1.0 |
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*/ |
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private $leftClassName; |
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/** |
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* The name of the right business object class in the relation. |
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* |
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* @var string |
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* |
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* @since 1.0 |
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*/ |
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private $rightClassName; |
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/** |
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* Trace logger. |
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* |
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* @var \Alpha\Util\Logging\Logger |
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* |
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* @since 1.0 |
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*/ |
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private static $logger = null; |
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/** |
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* an array of data display labels for the class properties. |
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* |
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* @var array |
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* |
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* @since 1.0 |
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*/ |
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protected $dataLabels = array('ID' => 'RelationLookup ID#', 'leftID' => 'Left Record ID#', 'rightID' => 'Right Record ID#'); |
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/** |
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* The message to display to the user when validation fails. |
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* |
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* @var string |
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* |
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* @since 1.0 |
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*/ |
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protected $helper = 'Not a valid RelationLookup value!'; |
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/** |
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* The constructor. |
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* |
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* @throws \Alpha\Exception\FailedLookupCreateException |
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* @throws \Alpha\Exception\IllegalArguementException |
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* |
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* @since 1.0 |
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*/ |
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public function __construct($leftClassName, $rightClassName) |
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{ |
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self::$logger = new Logger('RelationLookup'); |
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self::$logger->debug('>>__construct(leftClassName=['.$leftClassName.'], rightClassName=['.$rightClassName.'])'); |
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// ensure to call the parent constructor |
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parent::__construct(); |
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if (empty($leftClassName) || empty($rightClassName)) { |
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throw new IllegalArguementException('Cannot create RelationLookup object without providing the left and right class names!'); |
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} |
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$this->leftClassName = $leftClassName; |
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$this->rightClassName = $rightClassName; |
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$this->leftID = new Integer(); |
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$this->rightID = new Integer(); |
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$this->markTransient('leftClassName'); |
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$this->markTransient('rightClassName'); |
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$this->markTransient('helper'); |
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$this->markTransient('TABLE_NAME'); |
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// add a unique composite key to these fields |
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$this->markUnique('leftID', 'rightID'); |
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// make sure the lookup table exists |
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if (!$this->checkTableExists() && ActiveRecord::isInstalled()) { |
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// first make sure that the two Record tables exist before relating them with a lookup table |
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if (ActiveRecord::checkRecordTableExists($leftClassName) && ActiveRecord::checkRecordTableExists($rightClassName)) { |
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$this->makeTable(); |
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} else { |
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throw new FailedLookupCreateException('Error trying to create a lookup table ['.$this->getTableName().'], as tables for records ['.$leftClassName.'] or ['.$rightClassName.'] don\'t exist!'); |
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} |
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} |
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self::$logger->debug('<<__construct'); |
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} |
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/** |
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* Get the leftClassName value. |
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* |
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* @return string |
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* |
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* @since 1.0 |
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*/ |
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public function getLeftClassName() |
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{ |
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return $this->leftClassName; |
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} |
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/** |
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* Get the rightClassName value. |
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* |
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* @return string |
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* |
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* @since 1.0 |
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*/ |
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public function getRightClassName() |
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{ |
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return $this->rightClassName; |
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} |
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/** |
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* Custom getter for the TABLE_NAME, which can't be static in this class due to |
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* the lookup tablenames being different each time. |
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* |
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* @return string |
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* |
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* @since 1.0 |
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* |
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* @throws \Alpha\Exception\AlphaException |
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*/ |
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public function getTableName() |
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{ |
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if (isset($this->leftClassName) && isset($this->rightClassName)) { |
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$leftClass = new ReflectionClass($this->leftClassName); |
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$left = $leftClass->getShortname(); |
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$rightClass = new ReflectionClass($this->rightClassName); |
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$right = $rightClass->getShortname(); |
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self::$logger->debug('Setting table name to ['.$left.'2'.$right.']'); |
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return $left.'2'.$right; |
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} else { |
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throw new AlphaException('No table name set for the class ['.get_class($this).'], left or right class name(s) missing'); |
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} |
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} |
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/** |
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* This custom version provides the left/right class names to the business object constructor, required |
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* for RelationLookup objects. |
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* |
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* (non-PHPdoc) |
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* |
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* @see Alpha\Model\ActiveRecord::loadAllByAttribute() |
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*/ |
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public function loadAllByAttribute($attribute, $value, $start = 0, $limit = 0, $orderBy = 'ID', $order = 'ASC', $ignoreClassType = false, $constructorArgs = array()) |
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{ |
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if (!isset(self::$logger)) { |
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self::$logger = new Logger('RelationLookup'); |
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} |
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self::$logger->debug('>>loadAllByAttribute(attribute=['.$attribute.'], value=['.$value.'], start=['.$start.'], limit=['.$limit.'], orderBy=['.$orderBy.'], order=['.$order.'], ignoreClassType=['.$ignoreClassType.'], constructorArgs=['.print_r($constructorArgs, true).']'); |
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if (method_exists($this, 'before_loadAllByAttribute_callback')) { |
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$this->{'before_loadAllByAttribute_callback'}(); |
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} |
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$config = ConfigProvider::getInstance(); |
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$provider = ServiceFactory::getInstance($config->get('db.provider.name'), 'Alpha\Model\ActiveRecordProviderInterface'); |
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$provider->setRecord($this); |
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$objects = $provider->loadAllByAttribute($attribute, $value, $start, $limit, $orderBy, $order, $ignoreClassType, array($this->leftClassName, $this->rightClassName)); |
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if (method_exists($this, 'after_loadAllByAttribute_callback')) { |
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$this->{'after_loadAllByAttribute_callback'}(); |
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} |
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self::$logger->debug('<<loadAllByAttribute ['.count($objects).']'); |
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return $objects; |
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} |
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/** |
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* Getter for the validation helper string. |
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* |
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* @return string |
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* |
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* @since 1.0 |
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*/ |
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public function getHelper() |
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{ |
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return $this->helper; |
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} |
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/** |
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* Set the validation helper text. |
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* |
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* @param string $helper |
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* |
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* @since 1.0 |
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*/ |
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public function setHelper($helper) |
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{ |
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$this->helper = $helper; |
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} |
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/** |
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* Returns an array of the IDs of the related objects. |
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* |
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* @return integer[] |
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* |
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* @since 1.0 |
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*/ |
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public function getValue() |
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{ |
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return array($this->leftID->getValue(), $this->rightID->getValue()); |
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} |
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/** |
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* Used to set the IDs of the related objects. Pass a two-item array of IDs, the first |
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* one being the left object ID, the second being the right. |
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* |
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* @param string[] $IDs |
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* |
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* @since 1.0 |
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* |
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* @throws \Alpha\Exception\IllegalArguementException |
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*/ |
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public function setValue($IDs) |
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{ |
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try { |
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$this->leftID->setValue($IDs[0]); |
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$this->rightID->setValue($IDs[1]); |
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} catch (\Exception $e) { |
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throw new IllegalArguementException('Array value passed to setValue is not valid ['.var_export($IDs, true).'], array should contain two IDs'); |
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} |
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} |
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/** |
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* Used to convert the object to a printable string. |
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* |
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* @return string |
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* |
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* @since 1.0 |
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*/ |
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public function __toString() |
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{ |
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return strval($this->getTableName()); |
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} |
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} |
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