public function DatabaseStatementPrefetch::execute

Executes a prepared statement.

Parameters

$args: An array of values with as many elements as there are bound parameters in the SQL statement being executed.

$options: An array of options for this query.

Return value

TRUE on success, or FALSE on failure.:

Overrides DatabaseStatementInterface::execute

File

includes/database/prefetch.inc, line 142

Database interface code for engines that need complete control over their result sets.

Class

DatabaseStatementPrefetch

An implementation of DatabaseStatementInterface that prefetches all data.

Code

public function execute($args = array(), $options = array()) {
  if (isset($options['fetch'])) {
    if (is_string($options['fetch'])) {
      // Default to an object. Note: db fields will be added to the object
      // before the constructor is run. If you need to assign fields after
      // the constructor is run, see http://drupal.org/node/315092.
      $this->setFetchMode(PDO::FETCH_CLASS, $options['fetch']);
    }
    else {
      $this->setFetchMode($options['fetch']);
    }
  }

  $logger = $this->dbh->getLogger();
  if (!empty($logger)) {
    $query_start = microtime(TRUE);
  }

  // Prepare the query.
  $statement = $this->getStatement($this->queryString, $args);
  if (!$statement) {
    $this->throwPDOException();
  }

  $return = $statement->execute($args);
  if (!$return) {
    $this->throwPDOException();
  }

  // Fetch all the data from the reply, in order to release any lock
  // as soon as possible.
  $this->rowCount = $statement->rowCount();
  $this->data = $statement->fetchAll(PDO::FETCH_ASSOC);
  // Destroy the statement as soon as possible.
  unset($statement);

  $this->resultRowCount = count($this->data);

  if ($this->resultRowCount) {
    $this->columnNames = array_keys($this->data[0]);
  }
  else {
    $this->columnNames = array();
  }

  if (!empty($logger)) {
    $query_end = microtime(TRUE);
    $logger->log($this, $args, $query_end - $query_start);
  }

  // Initialize the first row in $this->currentRow.
  $this->next();

  return $return;
}