Driver::insertBatch()   B
last analyzed

Complexity

Conditions 5
Paths 6

Size

Total Lines 40

Duplication

Lines 0
Ratio 0 %

Importance

Changes 0
Metric Value
cc 5
nc 6
nop 2
dl 0
loc 40
rs 8.9688
c 0
b 0
f 0
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<?php declare(strict_types=1);
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/**
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 * Query
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 *
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 * SQL Query Builder / Database Abstraction Layer
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 *
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 * PHP version 7.1
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 *
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 * @package     Query
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 * @author      Timothy J. Warren <[email protected]>
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 * @copyright   2012 - 2018 Timothy J. Warren
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 * @license     http://www.opensource.org/licenses/mit-license.html  MIT License
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 * @link        https://git.timshomepage.net/aviat4ion/Query
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 */
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namespace Query\Drivers\Sqlite;
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use PDO;
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use Query\Drivers\AbstractDriver;
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/**
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 * SQLite specific class
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 */
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class Driver extends AbstractDriver {
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	/**
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	 * SQLite has a truncate optimization,
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	 * but no support for the actual keyword
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	 * @var boolean
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	 */
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	protected $hasTruncate = FALSE;
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	/**
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	 * Open SQLite Database
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	 *
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	 * @param string $dsn
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	 * @param string $user
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	 * @param string $pass
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	 * @param array $driverOptions
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	 */
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	public function __construct(string $dsn, string $user=NULL, string $pass=NULL, array $driverOptions=[])
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	{
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		if (strpos($dsn, 'sqlite:') === FALSE)
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		{
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			$dsn = "sqlite:{$dsn}";
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		}
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		parent::__construct($dsn, $user, $pass);
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	}
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	/**
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	 * List tables for the current database
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	 *
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	 * @return mixed
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	 */
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	public function getTables(): array
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	{
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		$sql = $this->sql->tableList();
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		$res = $this->query($sql);
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		return dbFilter($res->fetchAll(PDO::FETCH_ASSOC), 'name');
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	}
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	/**
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	 * Retrieve foreign keys for the table
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	 *
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	 * @param string $table
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	 * @return array
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	 */
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	public function getFks($table): array
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	{
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		$returnRows = [];
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		foreach(parent::getFks($table) as $row)
0 ignored issues
show
Bug introduced by
The expression parent::getFks($table) of type array|null is not guaranteed to be traversable. How about adding an additional type check?

There are different options of fixing this problem.

  1. If you want to be on the safe side, you can add an additional type-check:

    $collection = json_decode($data, true);
    if ( ! is_array($collection)) {
        throw new \RuntimeException('$collection must be an array.');
    }
    
    foreach ($collection as $item) { /** ... */ }
    
  2. If you are sure that the expression is traversable, you might want to add a doc comment cast to improve IDE auto-completion and static analysis:

    /** @var array $collection */
    $collection = json_decode($data, true);
    
    foreach ($collection as $item) { /** .. */ }
    
  3. Mark the issue as a false-positive: Just hover the remove button, in the top-right corner of this issue for more options.

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		{
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			$returnRows[] = [
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				'child_column' => $row['from'],
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				'parent_table' => $row['table'],
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				'parent_column' => $row['to'],
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				'update' => $row['on_update'],
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				'delete' => $row['on_delete']
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			];
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		}
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		return $returnRows;
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	}
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	/**
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	 * Create sql for batch insert
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	 *
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	 * @codeCoverageIgnore
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	 * @param string $table
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	 * @param array $data
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	 * @return array
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	 */
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	public function insertBatch(string $table, array $data=[]): array
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	{
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		// If greater than version 3.7.11, supports the same syntax as
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		// MySQL and Postgres
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		if (version_compare($this->getAttribute(PDO::ATTR_SERVER_VERSION), '3.7.11', '>='))
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		{
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			return parent::insertBatch($table, $data);
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		}
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		// --------------------------------------------------------------------------
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		// Otherwise, do a union query as an analogue to a 'proper' batch insert
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		// --------------------------------------------------------------------------
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		// Each member of the data array needs to be an array
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		if ( ! \is_array(current($data)))
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		{
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			return NULL;
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		}
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		// Start the block of sql statements
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		$table = $this->quoteTable($table);
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		$sql = "INSERT INTO {$table} \n";
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		// Create a key-value mapping for each field
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		$first = array_shift($data);
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		$cols = [];
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		foreach($first as $colname => $datum)
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		{
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			$cols[] = $this->_quote($datum) . ' AS ' . $this->quoteIdent($colname);
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		}
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		$sql .= 'SELECT ' . implode(', ', $cols) . "\n";
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		foreach($data as $union)
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		{
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			$vals = array_map([$this, 'quote'], $union);
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			$sql .= 'UNION SELECT ' . implode(',', $vals) . "\n";
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		}
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		return [$sql, NULL];
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	}
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}