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<?php |
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/* |
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* This file is part of the PommProject/ModelManager package. |
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* |
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* (c) 2014 - 2015 Grégoire HUBERT <[email protected]> |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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namespace PommProject\ModelManager\Model\ModelTrait; |
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use PommProject\Foundation\Where; |
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use PommProject\ModelManager\Exception\ModelException; |
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use PommProject\ModelManager\Model\CollectionIterator; |
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use PommProject\ModelManager\Model\FlexibleEntity\FlexibleEntityInterface; |
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use PommProject\ModelManager\Model\Model; |
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/** |
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* WriteQueries |
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* |
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* Basic write queries for model instances. |
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* |
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* @package ModelManager |
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* @copyright 2014 - 2015 Grégoire HUBERT |
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* @author Grégoire HUBERT |
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* @license X11 {@link http://opensource.org/licenses/mit-license.php} |
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*/ |
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trait WriteQueries |
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{ |
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use ReadQueries; |
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/** |
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* insertOne |
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* |
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* Insert a new entity in the database. The entity is passed by reference. |
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* It is updated with values returned by the database (ie, default values). |
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* |
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* @access public |
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* @param FlexibleEntityInterface $entity |
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* @return Model $this |
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*/ |
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public function insertOne(FlexibleEntityInterface &$entity) |
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{ |
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$values = $entity->fields( |
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array_intersect( |
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array_keys($this->getStructure()->getDefinition()), |
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array_keys($entity->extract()) |
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) |
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); |
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$sql = strtr("insert into :relation (:fields) values (:values) returning :projection", [ |
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':relation' => $this->getStructure()->getRelation(), |
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':fields' => $this->getEscapedFieldList(array_keys($values)), |
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':projection' => $this->createProjection()->formatFieldsWithFieldAlias(), |
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':values' => join(',', $this->getParametersList($values)) |
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]); |
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$entity = $this |
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->query($sql, array_values($values)) |
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->current() |
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->status(FlexibleEntityInterface::STATUS_EXIST); |
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return $this; |
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} |
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/** |
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* updateOne |
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* |
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* Update the entity. ONLY the fields indicated in the $fields array are |
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* updated. The entity is passed by reference and its values are updated |
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* with the values from the database. This means all changes not updated |
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* are lost. The update is made upon a condition on the primary key. If the |
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* primary key is not fully set, an exception is thrown. |
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* |
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* @access public |
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* @param FlexibleEntityInterface $entity |
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* @param array $fields |
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* @return Model $this |
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*/ |
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public function updateOne(FlexibleEntityInterface &$entity, array $fields = []) |
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{ |
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if (empty($fields)) { |
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$fields = $entity->getModifiedColumns(); |
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} |
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$entity = $this->updateByPk( |
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$entity->fields($this->getStructure()->getPrimaryKey()), |
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$entity->fields($fields) |
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); |
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return $this; |
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} |
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/** |
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* updateByPk |
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* |
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* Update a record and fetch it with its new values. If no records match |
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* the given key, null is returned. |
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* |
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* @access public |
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* @param array $primary_key |
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* @param array $updates |
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* @throws ModelException |
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* @return FlexibleEntityInterface |
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*/ |
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public function updateByPk(array $primary_key, array $updates) |
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{ |
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$where = $this |
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->checkPrimaryKey($primary_key) |
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->getWhereFrom($primary_key) |
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; |
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$parameters = $this->getParametersList($updates); |
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$update_strings = []; |
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foreach ($updates as $field_name => $new_value) { |
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$update_strings[] = sprintf( |
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"%s = %s", |
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$this->escapeIdentifier($field_name), |
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$parameters[$field_name] |
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); |
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} |
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$sql = strtr("update :relation set :update where :condition returning :projection", [ |
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':relation' => $this->getStructure()->getRelation(), |
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':update' => join(', ', $update_strings), |
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':condition' => (string) $where, |
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':projection' => $this->createProjection()->formatFieldsWithFieldAlias(), |
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]); |
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$iterator = $this->query($sql, array_merge(array_values($updates), $where->getValues())); |
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if ($iterator->isEmpty()) { |
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return null; |
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} |
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return $iterator->current()->status(FlexibleEntityInterface::STATUS_EXIST); |
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} |
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/** |
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* deleteOne |
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* |
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* Delete an entity from a table. Entity is passed by reference and is |
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* updated with the values fetched from the deleted record. |
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* |
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* @access public |
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* @param FlexibleEntityInterface $entity |
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* @return Model $this |
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*/ |
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public function deleteOne(FlexibleEntityInterface &$entity) |
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{ |
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$entity = $this->deleteByPK($entity->fields($this->getStructure()->getPrimaryKey())); |
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return $this; |
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} |
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/** |
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* deleteByPK |
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* |
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* Delete a record from its primary key. The deleted entity is returned or |
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* null if not found. |
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* |
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* @access public |
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* @param array $primary_key |
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* @throws ModelException |
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* @return FlexibleEntityInterface |
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*/ |
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public function deleteByPK(array $primary_key) |
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{ |
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$where = $this |
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->checkPrimaryKey($primary_key) |
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->getWhereFrom($primary_key) |
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; |
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return $this->deleteWhere($where)->current(); |
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} |
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/** |
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* deleteWhere |
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* |
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* Delete records by a given condition. A collection of all deleted entries is returned. |
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* |
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* @param $where |
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* @param array $values |
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* @return CollectionIterator |
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*/ |
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public function deleteWhere($where, array $values = []) |
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{ |
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if (!$where instanceof Where) { |
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$where = new Where($where, $values); |
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} |
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$sql = strtr( |
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"delete from :relation where :condition returning :projection", |
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[ |
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':relation' => $this->getStructure()->getRelation(), |
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':condition' => (string) $where, |
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':projection' => $this->createProjection()->formatFieldsWithFieldAlias(), |
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] |
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); |
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$collection = $this->query($sql, $where->getValues()); |
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foreach ($collection as $entity) { |
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$entity->status(FlexibleEntityInterface::STATUS_NONE); |
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} |
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$collection->rewind(); |
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return $collection; |
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} |
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/** |
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* createAndSave |
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* |
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* Create a new entity from given values and save it in the database. |
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* |
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* @access public |
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* @param array $values |
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* @return FlexibleEntityInterface |
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*/ |
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public function createAndSave(array $values) |
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{ |
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$entity = $this->createEntity($values); |
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$this->insertOne($entity); |
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return $entity; |
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} |
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/** |
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* getEscapedFieldList |
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* |
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* Return a comma separated list with the given escaped field names. |
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* |
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* @access protected |
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* @param array $fields |
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* @return string |
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*/ |
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public function getEscapedFieldList(array $fields) |
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{ |
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return join( |
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', ', |
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array_map(function ($field) { |
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return $this->escapeIdentifier($field); |
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}, $fields) |
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); |
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} |
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/** |
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* getParametersList |
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* |
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* Create a parameters list from values. |
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* |
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* @access protected |
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* @param array $values |
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* @return array $escape codes |
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*/ |
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protected function getParametersList(array $values) |
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{ |
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$parameters = []; |
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foreach ($values as $name => $value) { |
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$parameters[$name] = sprintf( |
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"$*::%s", |
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$this->getStructure()->getTypeFor($name) |
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); |
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} |
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return $parameters; |
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} |
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} |
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Methods can only be called on objects. This check looks for methods being called on variables that have been inferred to never be objects.