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Database abstraction layer

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

Code

includes/database/sqlite/database.inc, line 21

<?php
public function __construct(array $connection_options = array()) {
  // We don't need a specific PDOStatement class here, we simulate it below.
  $this->statementClass = NULL;

  // This driver defaults to transaction support, except if explicitly passed FALSE.
  $this->transactionSupport = !isset($connection_options['transactions']) || $connection_options['transactions'] !== FALSE;

  parent::__construct('sqlite:' . $connection_options['database'], '', '', array(
      // Force column names to lower case.
      PDO::ATTR_CASE => PDO::CASE_LOWER,
    ));

  $this->exec('PRAGMA encoding="UTF-8"');

  // Create functions needed by SQLite.
  $this->sqliteCreateFunction('if', array($this, 'sqlFunctionIf'));
  $this->sqliteCreateFunction('greatest', array($this, 'sqlFunctionGreatest'));
  $this->sqliteCreateFunction('pow', 'pow', 2);
  $this->sqliteCreateFunction('length', 'strlen', 1);
  $this->sqliteCreateFunction('concat', array($this, 'sqlFunctionConcat'));
  $this->sqliteCreateFunction('substring', array($this, 'sqlFunctionSubstring'), 3);
  $this->sqliteCreateFunction('rand', array($this, 'sqlFunctionRand'));
}
?>