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<?php |
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namespace Soluble\Normalist\Synthetic\ResultSet; |
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use Soluble\Normalist\Synthetic\Table; |
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use Soluble\Normalist\Synthetic\Record; |
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use Soluble\Normalist\Synthetic\Exception; |
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use Soluble\Db\Sql\Select; |
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use Iterator; |
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use Countable; |
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class ResultSet implements Iterator, Countable |
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{ |
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/** |
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* |
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* @var \Zend\Db\ResultSet\ResultSet |
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*/ |
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protected $dataSource; |
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/** |
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* @var Table |
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*/ |
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protected $table; |
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/** |
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* |
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* @var Select |
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*/ |
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protected $select; |
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/** |
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* @var null|int |
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*/ |
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protected $count = null; |
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/** |
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* @var int |
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*/ |
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protected $position = 0; |
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/** |
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* |
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* @var boolean |
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*/ |
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protected $has_complete_record_definition; |
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/** |
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* |
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* @param Select $select Originating select object |
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* @param Table $table Originating table |
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* @param boolean $has_complete_record_definition |
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*/ |
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public function __construct(Select $select, Table $table, $has_complete_record_definition = false) |
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{ |
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$this->select = $select; |
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$this->table = $table; |
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$this->has_complete_record_definition = $has_complete_record_definition; |
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$this->dataSource = $select->execute(); |
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} |
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/** |
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* This method allows the results to be iterable multiple times |
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* for database drivers that does not support rewind() method. |
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* PDO_Mysql for example does not provide backward scrolling resultset, |
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* They are forward only. MySQLi provides backward scrolling so this method |
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* should not be used. |
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* |
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* @throws Zend\Db\ResultSet\Exception\RuntimeException Buffering must be enabled before iteration is started |
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* |
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* @return ResultSet |
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*/ |
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public function buffer() |
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{ |
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$this->dataSource->buffer(); |
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return $this; |
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} |
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/** |
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* Return an array version of the resultset |
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* @return array |
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*/ |
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public function toArray() |
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{ |
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return $this->dataSource->toArray(); |
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} |
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/** |
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* Return an json version of the resultset |
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* @return string Json encoded version |
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*/ |
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public function toJson() |
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{ |
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return json_encode($this->dataSource->toArray()); |
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} |
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/** |
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* Iterator: move pointer to next item |
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* |
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* @return void |
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*/ |
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public function next() |
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{ |
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$this->dataSource->next(); |
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$this->position++; |
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} |
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/** |
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* Iterator: retrieve current key |
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* |
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* @return mixed |
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*/ |
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public function key() |
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{ |
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return $this->position; |
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} |
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/** |
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* Iterator: get current item |
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* |
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* @throws Exception\LogicException whenever a record cannot be instanciated, due to missing column specs |
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* @return Record |
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*/ |
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public function current() |
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{ |
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$data = $this->dataSource->current(); |
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if (!$this->has_complete_record_definition) { |
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$data_columns = array_keys($this->table->getColumnsInformation()); |
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$record_columns = array_keys((array) $data); |
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$matches = array_intersect($data_columns, $record_columns); |
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if (count($matches) != count($data_columns)) { |
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$missings = implode(',', array_diff($data_columns, $record_columns)); |
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$msg = __METHOD__ . ": Cannot create a Record due to incomplete or aliased column definition (missing: $missings)."; |
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$msg .= "Check whether columns have been modified in TableSearch::columns() method, or use an toArray(), toJson()... version of the ResultSet."; |
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throw new Exception\LogicException($msg); |
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} |
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$this->has_complete_record_definition = true; |
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} |
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$record = $this->table->record($data, $ignore = true); |
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$record->setState(Record::STATE_CLEAN); |
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return $record; |
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} |
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/** |
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* Iterator: is pointer valid? |
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* |
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* @return bool |
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*/ |
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public function valid() |
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{ |
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return $this->dataSource->valid(); |
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} |
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/** |
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* Iterator: rewind |
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* |
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* @return void |
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*/ |
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public function rewind() |
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{ |
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$this->position = 0; |
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} |
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/** |
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* Countable: return count of rows |
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* |
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* @return int |
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*/ |
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public function count() |
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{ |
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if ($this->count === null) { |
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$this->count = $this->dataSource->count(); |
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} |
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return $this->count; |
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} |
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} |
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belgattitude /
solublecomponents
