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<?php |
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/** |
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* This file is part of the DbImporter package. |
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* |
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* (c) Mauro Cassani<https://github.com/mauretto78> |
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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 DbImporter\QueryBuilder; |
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class MySqlQueryBuilder extends AbstractQueryBuilder |
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{ |
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const MULTIPLE_QUERY_IMPORT_LIMIT = 4000; |
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/** |
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* @return string |
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*/ |
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private function getQueryHead() |
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{ |
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$sql = 'INSERT '; |
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if (true === $this->debug) { |
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$sql .= 'IGNORE '; |
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} |
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$sql .= 'INTO `'.$this->table.'` ('; |
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$c = 1; |
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$values = array_keys($this->mapping); |
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foreach ($values as $value) { |
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$sql .= '`'.$value.'`'; |
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$sql .= $this->appendComma($c, $values); |
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$c++; |
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} |
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$sql .= ') VALUES '; |
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return $sql; |
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} |
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/** |
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* @return string |
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*/ |
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private function getQueryTail() |
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{ |
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$sql = ' ON DUPLICATE KEY UPDATE '; |
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$c = 1; |
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$values = array_keys($this->mapping); |
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foreach ($values as $value) { |
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$sql .= '`'.$value.'`=VALUES('.$value.')'; |
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$sql .= $this->appendComma($c, $values); |
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$c++; |
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} |
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return $sql; |
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} |
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/** |
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* Returns the array of insert queries |
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* @param string $mode |
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* |
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* @return array |
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*/ |
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public function getQueries($mode = 'multiple') |
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{ |
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$sql = []; |
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foreach ($this->getQueriesBody($mode) as $query) { |
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$sql[] = $this->getQueryHead().$query.$this->getQueryTail(); |
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} |
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return $sql; |
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} |
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/** |
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* @param $mode |
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* @return array |
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*/ |
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private function getQueriesBody($mode) |
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{ |
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if($mode == 'multiple'){ |
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return $this->getMultipleInsertQueriesBody(self::MULTIPLE_QUERY_IMPORT_LIMIT); |
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} |
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return $this->getSingleInsertQueriesBody();; |
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} |
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} |
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mauretto78 /
db-importer
