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<?php // -*-php-*-
rcs_id('$Id: ADODB.php,v 1.13 2005/10/30 15:49:00 rurban Exp $');
require_once('lib/WikiDB.php');
/**
* WikiDB layer for ADODB, which does nothing more than calling the
* mysql-specific ADODB backend.
* Support for a newer adodb library, the adodb extension library
* and more databases will come with PhpWiki v1.3.10
*
* @author: Lawrence Akka, Reini Urban
*/
class WikiDB_ADODB extends WikiDB
{
function WikiDB_ADODB ($dbparams) {
$backend = 'ADODB';
if (is_array($dbparams['dsn']))
$backend = $dbparams['dsn']['phptype'];
elseif (preg_match('/^(\w+):/', $dbparams['dsn'], $m))
$backend = $m[1];
// Do we have a override? (currently: mysql, sqlite, oracle, mssql, oci8po, postgres7)
// TODO: mysqlt (innodb or bdb)
if ($backend == 'pgsql') { // PearDB DSN cross-compatiblity hack (for unit testing)
$backend = 'postgres7';
if (is_string($dbparams['dsn']))
$dbparams['dsn'] = $backend . ':' . substr($dbparams['dsn'], 6);
}
if (FindFile("lib/WikiDB/backend/ADODB_".$backend.".php",true)) {
$backend = 'ADODB_' . $backend;
} else {
$backend = 'ADODB';
}
include_once("lib/WikiDB/backend/".$backend.".php");
$backend_class = "WikiDB_backend_".$backend;
$backend = new $backend_class($dbparams);
$this->WikiDB($backend, $dbparams);
}
/**
* Determine whether page exists (in non-default form).
* @see WikiDB::isWikiPage
*/
function isWikiPage ($pagename) {
$pagename = (string) $pagename;
if ($pagename === '') return false;
if (!array_key_exists($pagename, $this->_cache->_id_cache)) {
$this->_cache->_id_cache[$pagename] = $this->_backend->is_wiki_page($pagename);
}
return $this->_cache->_id_cache[$pagename];
}
// add surrounding quotes '' if string
function quote ($in) {
if (is_int($in) || is_double($in)) {
return $in;
} elseif (is_bool($in)) {
return $in ? 1 : 0;
} elseif (is_null($in)) {
return 'NULL';
} else {
return $this->_backend->_dbh->qstr($in);
}
}
// ADODB handles everything as string
// Don't add surrounding quotes '', same as in PearDB
function qstr ($in) {
return $this->_backend->_dbh->addq($in);
}
function isOpen () {
global $request;
if (!$request->_dbi) return false;
return is_resource($this->_backend->connection());
}
// SQL result: for simple select or create/update queries
// returns the database specific resource type
function genericSqlQuery($sql, $args=false) {
if ($args)
$result = $this->_backend->_dbh->Execute($sql, $args);
else
$result = $this->_backend->_dbh->Execute($sql);
if (!$result) {
trigger_error("SQL Error: ".$this->_backend->_dbh->ErrorMsg(), E_USER_WARNING);
return false;
} else {
return $result;
}
}
// SQL iter: for simple select or create/update queries
// returns the generic iterator object (count,next)
function genericSqlIter($sql, $field_list = NULL) {
$result = $this->genericSqlQuery($sql);
return new WikiDB_backend_ADODB_generic_iter($this->_backend, $result, $field_list);
}
};
// For emacs users
// Local Variables:
// mode: php
// tab-width: 8
// c-basic-offset: 4
// c-hanging-comment-ender-p: nil
// indent-tabs-mode: nil
// End:
?>
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