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Database abstraction layer

Allow the use of different database servers using the same code base.

Code

includes/database/pgsql/database.inc, line 41

<?php
public function query($query, array $args = array(), $options = array()) {

  $options += $this->defaultOptions();

  // The PDO PostgreSQL driver has a bug which 
  // doesn't type cast booleans correctly when
  // parameters are bound using associative 
  // arrays. 
  // See http://bugs.php.net/bug.php?id=48383
  foreach ($args as &$value) {
    if (is_bool($value)) {
      $value = (int) $value;
    }
  }

  try {
    if ($query instanceof DatabaseStatementInterface) {
      $stmt = $query;
      $stmt->execute(NULL, $options);
    }
    else {
      $modified = $this->expandArguments($query, $args);
      $stmt = $this->prepareQuery($query, !$modified);
      $stmt->execute($args, $options);
    }

    switch ($options['return']) {
      case Database::RETURN_STATEMENT:
        return $stmt;
      case Database::RETURN_AFFECTED:
        return $stmt->rowCount();
      case Database::RETURN_INSERT_ID:
        return $this->lastInsertId($options['sequence_name']);
      case Database::RETURN_NULL:
        return;
      default:
        throw new PDOException('Invalid return directive: ' . $options['return']);
    }
  }
  catch (PDOException $e) {
    _db_check_install_needed();
    if ($options['throw_exception']) {
      if ($query instanceof DatabaseStatementInterface) {
        $query_string = $stmt->getQueryString();
      }
      else {
        $query_string = $query;
      }
      throw new PDOException($query_string . " - \n" . print_r($args, 1) . $e->getMessage());
    }
    return NULL;
  }
}
?>