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<?php
/**
* MessageSource_Database class file.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the BSD License.
*
* Copyright(c) 2004 by Qiang Xue. All rights reserved.
*
* To contact the author write to {@link mailto:qiang.xue@gmail.com Qiang Xue}
* The latest version of PRADO can be obtained from:
* {@link http://prado.sourceforge.net/}
*
* @package Prado\I18N\core
*/
namespace Prado\I18N\core;
/**
* Get the MessageSource class file.
*/
require_once(dirname(__FILE__).'/MessageSource.php');
/**
* MessageSource_Database class.
*
* Retrive the message translation from a database.
*
* See the MessageSource::factory() method to instantiate this class.
*
* @package Prado\I18N\core
*/
class MessageSource_Database extends MessageSource
{
private $_connID='';
private $_conn;
/**
* Constructor.
* Create a new message source using a Database
* @param string MySQL datasource, in PEAR's DB DSN format.
* @see MessageSource::factory();
*/
function __construct($source)
{
$this->_connID= (string)$source;
}
/**
* @return TDbConnection the database connection that may be used to retrieve messages.
*/
public function getDbConnection()
{
if($this->_conn===null)
{
$this->_conn=$this->createDbConnection($this->_connID);
$this->_conn->setActive(true);
}
return $this->_conn;
}
/**
* Creates the DB connection.
* @param string the module ID for TDataSourceConfig
* @return TDbConnection the created DB connection
* @throws TConfigurationException if module ID is invalid or empty
*/
protected function createDbConnection($connectionID)
{
if($connectionID!=='')
{
$conn=Prado::getApplication()->getModule($connectionID);
if($conn instanceof TDataSourceConfig)
return $conn->getDbConnection();
else
throw new TConfigurationException('messagesource_connectionid_invalid',$connectionID);
}
else
throw new TConfigurationException('messagesource_connectionid_required');
}
/**
* Get an array of messages for a particular catalogue and cultural
* variant.
* @param string the catalogue name + variant
* @return array translation messages.
*/
protected function &loadData($variant)
{
$command=$this->getDBConnection()->createCommand(
'SELECT t.id, t.source, t.target, t.comments
FROM trans_unit t, catalogue c
WHERE c.cat_id = t.cat_id
AND c.name = :variant
ORDER BY id ASC');
$command->bindParameter(':variant',$variant,PDO::PARAM_STR);
$dataReader=$command->query();
$result = array();
foreach ($dataReader as $row)
$result[$row['source']] = array($row['target'],$row['id'],$row['comments']);
return $result;
}
/**
* Get the last modified unix-time for this particular catalogue+variant.
* We need to query the database to get the date_modified.
* @param string catalogue+variant
* @return int last modified in unix-time format.
*/
protected function getLastModified($source)
{
$command=$this->getDBConnection()->createCommand(
'SELECT date_modified FROM catalogue WHERE name = :source');
$command->bindParameter(':source',$source,PDO::PARAM_STR);
$result=$command->queryScalar();
return $result ? $result : 0;
}
/**
* Check if a particular catalogue+variant exists in the database.
* @param string catalogue+variant
* @return boolean true if the catalogue+variant is in the database,
* false otherwise.
*/
protected function isValidSource($variant)
{
$command=$this->getDBConnection()->createCommand(
'SELECT COUNT(*) FROM catalogue WHERE name = :variant');
$command->bindParameter(':variant',$variant,PDO::PARAM_STR);
return $command->queryScalar()==1;
}
/**
* Get all the variants of a particular catalogue.
* @param string catalogue name
* @return array list of all variants for this catalogue.
*/
protected function getCatalogueList($catalogue)
{
$variants = explode('_',$this->culture);
$catalogues = array($catalogue);
$variant = null;
for($i = 0, $k = count($variants); $i < $k; ++$i)
{
if(isset($variants[$i]{0}))
{
$variant .= ($variant)?'_'.$variants[$i]:$variants[$i];
$catalogues[] = $catalogue.'.'.$variant;
}
}
return array_reverse($catalogues);
}
/**
* Retrive catalogue details, array($cat_id, $variant, $count).
* @param string catalogue
* @return array catalogue details, array($cat_id, $variant, $count).
*/
private function getCatalogueDetails($catalogue='messages')
{
if(empty($catalogue))
$catalogue = 'messages';
$variant = $catalogue.'.'.$this->culture;
$command=$this->getDBConnection()->createCommand(
'SELECT cat_id FROM catalogue WHERE name = :variant');
$command->bindParameter(':variant',$variant,PDO::PARAM_STR);
$cat_id=$command->queryScalar();
if ($cat_id===null) return false;
$command=$this->getDBConnection()->createCommand(
'SELECT COUNT(msg_id) FROM trans_unit WHERE cat_id = :catid ');
$command->bindParameter(':catid',$cat_id,PDO::PARAM_INT);
$count=$command->queryScalar();
return array($cat_id, $variant, $count);
}
/**
* Update the catalogue last modified time.
* @return boolean true if updated, false otherwise.
*/
private function updateCatalogueTime($cat_id, $variant)
{
$time = time();
$command=$this->getDBConnection()->createCommand(
'UPDATE catalogue SET date_modified = :moddate WHERE cat_id = :catid');
$command->bindParameter(':moddate',$time,PDO::PARAM_INT);
$command->bindParameter(':catid',$cat_id,PDO::PARAM_INT);
$result=$command->execute();
if(!empty($this->cache))
$this->cache->clean($variant, $this->culture);
return $result;
}
/**
* Save the list of untranslated blocks to the translation source.
* If the translation was not found, you should add those
* strings to the translation source via the <b>append()</b> method.
* @param string the catalogue to add to
* @return boolean true if saved successfuly, false otherwise.
*/
function save($catalogue='messages')
{
$messages = $this->untranslated;
if(count($messages) <= 0) return false;
$details = $this->getCatalogueDetails($catalogue);
if($details)
list($cat_id, $variant, $count) = $details;
else
return false;
if($cat_id <= 0) return false;
$inserted = 0;
$time = time();
$command=$this->getDBConnection()->createCommand(
'INSERT INTO trans_unit (cat_id,id,source,date_added) VALUES (:catid,:id,:source,:dateadded)');
$command->bindParameter(':catid',$cat_id,PDO::PARAM_INT);
$command->bindParameter(':id',$count,PDO::PARAM_INT);
$command->bindParameter(':source',$message,PDO::PARAM_STR);
$command->bindParameter(':dateadded',$time,PDO::PARAM_INT);
foreach($messages as $message)
{
if (empty($message)) continue;
$count++; $inserted++;
$command->execute();
}
if($inserted > 0)
$this->updateCatalogueTime($cat_id, $variant);
return $inserted > 0;
}
/**
* Delete a particular message from the specified catalogue.
* @param string the source message to delete.
* @param string the catalogue to delete from.
* @return boolean true if deleted, false otherwise.
*/
function delete($message, $catalogue='messages')
{
$details = $this->getCatalogueDetails($catalogue);
if($details)
list($cat_id, $variant, $count) = $details;
else
return false;
$command=$this->getDBConnection()->createCommand(
'DELETE FROM trans_unit WHERE cat_id = :catid AND source = :message');
$command->bindParameter(':catid',$cat_id,PDO::PARAM_INT);
$command->bindParameter(':message',$message,PDO::PARAM_STR);
return ($command->execute()==1) ? $this->updateCatalogueTime($cat_id, $variant) : false;
}
/**
* Update the translation.
* @param string the source string.
* @param string the new translation string.
* @param string comments
* @param string the catalogue of the translation.
* @return boolean true if translation was updated, false otherwise.
*/
function update($text, $target, $comments, $catalogue='messages')
{
$details = $this->getCatalogueDetails($catalogue);
if($details)
list($cat_id, $variant, $count) = $details;
else
return false;
$time = time();
$command=$this->getDBConnection()->createCommand(
'UPDATE trans_unit SET target = :target, comments = :comments, date_modified = :datemod
WHERE cat_id = :catid AND source = :source');
$command->bindParameter(':target',$target,PDO::PARAM_STR);
$command->bindParameter(':comments',$comments,PDO::PARAM_STR);
$command->bindParameter(':datemod',$time,PDO::PARAM_INT);
$command->bindParameter(':catid',$cat_id,PDO::PARAM_INT);
$command->bindParameter(':source',$text,PDO::PARAM_STR);
return ($command->execute()==1) ? $this->updateCatalogueTime($cat_id, $variant) : false;
}
/**
* Returns a list of catalogue as key and all it variants as value.
* @return array list of catalogues
*/
function catalogues()
{
$command=$this->getDBConnection()->createCommand( 'SELECT name FROM catalogue ORDER BY name');
$dataReader=$command->query();
$result = array();
foreach ($dataReader as $row)
{
$details = explode('.',$row[0]);
if(!isset($details[1])) $details[1] = null;
$result[] = $details;
}
return $result;
}
}
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