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<?php |
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/** |
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* The Query builder API. |
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* |
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* @author RN Kushwaha <[email protected]> |
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* @since v0.0.1 <Date: 16th April, 2019> |
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*/ |
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namespace Dolphin\Builders; |
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use Dolphin\Connections\Connection; |
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use \Exception; |
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/** |
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* This class provides the mechanism to build the Queries. |
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*/ |
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class QueryBuilder |
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{ |
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protected $whereAdded = false; |
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public function queryPrefix($query) |
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{ |
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return str_replace('#__', Connection::getPrefix(), $query); |
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} |
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public function getPrefix() |
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{ |
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return Connection::getPrefix(); |
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} |
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public function fetchType($fetchMode = 'FETCH_OBJ') |
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{ |
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switch ($fetchMode) { |
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case 'FETCH_ASSOC': $fetch = \PDO::FETCH_ASSOC; break; |
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case 'FETCH_NUM': $fetch = \PDO::FETCH_NUM; break; |
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case 'FETCH_BOTH': $fetch = \PDO::FETCH_BOTH; break; |
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case 'FETCH_BOUND': $fetch = \PDO::FETCH_BOUND; break; |
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case 'FETCH_CLASS': $fetch = \PDO::FETCH_CLASS; break; |
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default: $fetch = \PDO::FETCH_OBJ; |
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} |
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return $fetch; |
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} |
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public function addAlias($tableName) |
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{ |
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$tableAlias = ''; |
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if (stripos($tableName, ' as ') > 0) { |
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$tblName = explode(' as ', $tableName); |
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$tableAlias = ' AS '.$this->quote($tblName[1]); |
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$tableName = $tblName[0]; |
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} |
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return [$tableName, $tableAlias]; |
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} |
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public function quote($field) |
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{ |
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if (strpos($field, '.') !== false) { |
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$field = str_replace('.', '`.`', $field); |
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} |
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return '`'.$field.'`'; |
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} |
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public function enclose($field) |
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{ |
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return "'".$field."'"; |
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} |
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private function getQueryFields($fields, $tbl){ |
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$startQuery = join(', ', $fields); |
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if (empty($fields)) { |
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$startQuery = $this->quote($tbl).'.*'; |
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} |
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return $startQuery; |
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} |
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private function buildLimitQuery($limit, $offset, $query = []){ |
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$limitQuery = []; |
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if (!empty($limit)) { |
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$query[] = 'LIMIT'; |
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if (!empty($offset)) { |
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$query[] = $offset.','; |
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} |
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$query[] = $limit; |
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} |
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if (count($limitQuery)) { |
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$query = array_merge($query, $limitQuery); |
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} |
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return $query; |
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} |
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public function query($query, $fetchRows){ |
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try { |
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$obj = Connection::get()->query($this->queryPrefix($query), \PDO::FETCH_OBJ); |
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if ($fetchRows == 'count') { |
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$obj = $obj->fetchColumn(); |
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} |
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return $obj; |
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} catch (\PDOException $ex) { |
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throw new \PDOException($ex->getMessage(), 1); |
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} catch (Exception $e) { |
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throw new Exception($e->getMessage(), 1); |
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} |
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} |
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public function buildQuery(array $params) |
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{ |
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$jqb = new JoinQueryBuilder(); |
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$wqb = new WhereQueryBuilder(); |
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$prefix = $this->getPrefix(); |
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$tblWithPrefix = $params['table']; |
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$tbl = str_replace($prefix, '', $tblWithPrefix); |
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$query = []; |
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$query[] = 'SELECT'; |
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$query[] = $this->getQueryFields($params['fields'], $tbl); |
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$query[] = 'FROM'; |
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$query[] = $this->quote($tblWithPrefix).' AS '.$this->quote($tbl); |
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$query = $jqb->buildAllJoinQuery( |
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$params['join'], |
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$params['leftJoin'], |
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$params['rightJoin'], |
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$params['crossJoin'], |
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$query |
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); |
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$query = $wqb->buildAllWhereQuery( |
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$params['where'], |
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$params['whereRaw'], |
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$params['whereIn'], |
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$params['whereNotIn'], |
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$params['whereNull'], |
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$params['whereNotNull'], |
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$query |
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); |
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if (!empty($params['groupBy'])) { |
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$query[] = 'GROUP BY'; |
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$query[] = $params['groupBy']; |
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} |
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if (!empty($params['having'])) { |
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$query[] = 'HAVING'; |
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$query[] = $params['having']; |
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} |
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if (!empty($params['orderBy'])) { |
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$query[] = 'ORDER BY'; |
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$query[] = $params['orderBy']; |
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} |
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$query = $this->buildLimitQuery($params['limit'], $params['offset'], $query); |
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return $query; |
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} |
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public function getFields(array $args, bool $quote = true): array{ |
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$fldAr = []; |
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foreach ($args as $arg) { |
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foreach (explode(',', $arg) as $ar) { |
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$fldAr[] = ($quote === true) ? $this->quote(trim($ar)) : trim($ar); |
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} |
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} |
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return $fldAr; |
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} |
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} |
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CruzerSoftwares /
Dolphin
