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<?php |
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/** |
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* @copyright CONTENT CONTROL GmbH, http://www.contentcontrol-berlin.de |
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*/ |
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namespace midcom\datamanager\storage; |
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use midcom; |
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use midcom_error; |
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use midcom_connection; |
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/** |
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* Experimental storage class |
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*/ |
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class mnrelation extends delayed |
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{ |
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public function __construct($object, $config) |
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{ |
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parent::__construct($object, $config); |
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$defaults = [ |
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'sortable' => false, |
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'allow_multiple' => true, |
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'mapping_class_name' => null, |
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'master_fieldname' => null, |
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'member_fieldname' => null, |
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'master_is_id' => false, |
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'constraints' => [], |
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'require_corresponding_option' => false, |
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'sortable_sort_order' => 'DESC', |
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'additional_fields' => [], |
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]; |
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$this->config['type_config'] = array_merge($defaults, $this->config['type_config']); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function save() |
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{ |
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$selection = array_flip((array) $this->value); |
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$existing = $this->load_objects(); |
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$new = array_diff_key($selection, $existing); |
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$delete = array_diff_key($existing, $selection); |
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foreach (array_keys($new) as $key) { |
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$this->create_relation($key, $this->get_score($key, $selection)); |
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} |
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foreach ($delete as $key => $member) { |
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if (!$member->delete()) { |
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throw new midcom_error("Failed to delete member record for key {$key}: " . midcom_connection::get_error_string()); |
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} |
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} |
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if (!empty($this->config['type_config']['sortable'])) { |
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foreach ($existing as $key => $member) { |
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if (array_key_exists($key, $selection)) { |
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$score = $this->get_score($key, $selection); |
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if ($member->metadata->score != $score) { |
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$member->metadata->score = $score; |
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if (!$member->update()) { |
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throw new midcom_error("Failed to update member record for key {$key}: " . midcom_connection::get_error_string()); |
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} |
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} |
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} |
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} |
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} |
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} |
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private function get_score($key, array $selection) : int |
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{ |
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// if the sort order is descending, the first element needs the highest score |
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if ($this->config['type_config']['sortable'] == 'DESC') { |
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return abs($selection[$key] - count($selection)); |
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} |
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return $selection[$key]; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function load() |
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{ |
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if (!$this->get_master_foreign_key()) { |
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return $this->config['type_config']['allow_multiple'] ? [] : null; |
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} |
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if ($this->config['type_config']['allow_multiple']) { |
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return array_keys($this->load_objects()); |
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} |
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return key($this->load_objects()); |
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} |
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private function create_relation($member_key, int $score) |
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{ |
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$member = new $this->config['type_config']['mapping_class_name'](); |
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$member->{$this->config['type_config']['master_fieldname']} = $this->get_master_foreign_key(); |
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$member->{$this->config['type_config']['member_fieldname']} = $member_key; |
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foreach ($this->config['type_config']['additional_fields'] as $fieldname => $value) { |
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// Determine what to do if using dot (.) in the additional fields, |
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if (preg_match('/^(.+)\.(.+)$/', $fieldname, $regs)) { |
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$domain = $regs[1]; |
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$key = $regs[2]; |
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// Determine what should be done with conjunction |
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switch ($domain) { |
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case 'metadata': |
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$member->metadata->$key = $value; |
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break; |
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case 'parameter': |
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$member->set_parameter('midcom.helper.datamanager2.mnrelation', $key, $value); |
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break; |
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} |
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continue; |
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} |
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$member->{$fieldname} = $value; |
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} |
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if (!empty($this->config['type_config']['sortable'])) { |
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$member->metadata->score = $score; |
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} |
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if (!$member->create()) { |
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throw new midcom_error("Failed to create a new member record for key {$member_key}: " . midcom_connection::get_error_string()); |
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} |
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} |
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private function load_objects() : array |
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{ |
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$qb = midcom::get()->dbfactory->new_query_builder($this->config['type_config']['mapping_class_name']); |
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$qb->add_constraint($this->config['type_config']['master_fieldname'], '=', $this->get_master_foreign_key()); |
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if ( $this->config['type_config']['sortable'] |
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&& preg_match('/^(ASC|DESC)/i', $this->config['type_config']['sortable_sort_order'], $regs)) { |
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$order = strtoupper($regs[1]); |
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$qb->add_order('metadata.score', $order); |
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} |
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foreach ($this->config['type_config']['constraints'] as $constraint) { |
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$qb->add_constraint($this->config['type_config']['member_fieldname'] . '.' . $constraint['field'], $constraint['op'], $constraint['value']); |
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} |
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foreach ($this->config['type_config']['additional_fields'] as $fieldname => $value) { |
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$qb->add_constraint($fieldname, '=', $value); |
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} |
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$indexed = []; |
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$results = $qb->execute(); |
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foreach ($results as $result) { |
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$indexed[$result->{$this->config['type_config']['member_fieldname']}] = $result; |
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} |
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return $indexed; |
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} |
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/** |
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* Returns the foreign key of the master object. This is either the ID or the GUID of |
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* the master object, depending on the $master_is_id member. |
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* |
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* @var string Foreign key for the master field in the mapping table. |
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*/ |
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private function get_master_foreign_key() |
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{ |
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if ($this->config['type_config']['master_is_id']) { |
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return $this->object->id; |
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} |
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return $this->object->guid; |
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} |
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} |
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flack /
openpsa
