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<?php
class DbGlobalization extends TModule {
const CACHE_PREFIX = 'DbGlobalization';
private $_connection;
public function setConnection($dbModule) {
$dbModule = $this->Application->getModule($dbModule);
if (!($dbModule instanceof TDataSourceConfig)) {
throw new TConfigurationException(
Prado::localize(
'Invalid DB module ID for DbGlobalization'
)
);
}
$this->_connection = $dbModule->DbConnection;
}
public function getConnection() {
if (!($this->_connection instanceof TDbConnection)) {
throw new TConfigurationException(
Prado::localize(
'Connection ID for DBGlobalization not set'
)
);
}
return $this->_connection;
}
private $_tableName = 'translations';
private $_languageColumn = 'language';
private $_categoryColumn = 'category';
private $_stringColumn = 'string';
private $_translationColumn = 'translation';
public function getTableName() {
return $this->_tableName;
}
public function getLanguageColumn() {
return $this->_languageColumn;
}
public function getCategoryColumn() {
return $this->_categoryColumn;
}
public function getStringColumn() {
return $this->_stringColumn;
}
public function getTranslationColumn() {
return $this->_translationColumn;
}
public function setTableName(string $value) {
$this->_tableName = $value;
}
public function setLanguageColumn(string $value) {
$this->_languageColumn = $value;
}
public function setCategoryColumn(string $value) {
$this->_categoryColumn = $value;
}
public function setStringColumn(string $value) {
$this->_stringColumn = $value;
}
public function setTranslationColumn(string $value) {
$this->_translationColumn = $value;
}
private $_cache;
public function setCache($value) {
if (TPropertyValue::ensureBoolean($value)) {
$this->_cache = $this->Application->getCache();
}
}
public function getCache() {
return $this->_cache;
}
protected $_cacheContent;
protected function _loadCache(string $lang) {
if ($this->Cache) {
if (!$this->_cacheContent) {
$this->_cacheContent = $this->Cache->get(self::CACHE_PREFIX . '.' . $lang);
}
}
return $this->_cacheContent;
}
protected function _getTranslationFromCache(string $string, string $category, string $language=NULL) {
if (!$language) {
$language = $this->Application->getGlobalization()->getCulture();
}
$cache = $this->_loadCache($language);
if (!$cache) {
return NULL;
}
if (isset($cache[$category]) && isset($cache[$category][$string])) {
return $cache[$category][$string];
}
return NULL;
}
public function rebuildCache() {
if ($this->Cache && $this->_rebuildCache) {
$dbTranslations = $this->_getTranslationsFromDB();
$cache = [];
foreach ($dbTranslations as $translation) {
$language = $translation[$this->LanguageColumn];
$category = $translation[$this->CategoryColumn];
$string = $translation[$this->StringColumn];
if (!isset($cache[$language])) {
$cache[$language] = [];
}
if (!isset($cache[$language][$category])) {
$cache[$language][$category] = [];
}
$cache[$language][$category][$string] = $translation[$this->TranslationColumn] ?: '';
}
foreach ($cache as $lang => $langCache) {
$this->Cache->set(self::CACHE_PREFIX . '.' . $lang, $langCache);
}
}
}
protected function _initTranslationDB() {
$this->Connection->setActive(TRUE);
try {
$tableInfo = $this->Connection->DbMetaData->getTableInfo(
$this->TableName
);
} catch (TDbException $e) {
$sql = 'CREATE TABLE %s ('
. '%s VARCHAR(255),'
. '%s VARCHAR(255),'
. '%s VARCHAR(255),'
. '%s TEXT,'
. 'PRIMARY KEY (%s, %s, %s),'
. 'INDEX (%s),'
. 'INDEX (%s),'
. 'INDEX (%s)'
. ')';
$tableName = $this->Connection->quoteTableName($this->TableName);
$languageColumn = $this->Connection->quoteColumnName($this->LanguageColumn);
$categoryColumn = $this->Connection->quoteColumnName($this->CategoryColumn);
$stringColumn = $this->Connection->quoteColumnName($this->StringColumn);
$translationColumn = $this->Connection->quoteColumnName($this->TranslationColumn);
$this->Connection->createCommand(
sprintf(
$sql,
$tableName,
$languageColumn, $categoryColumn, $stringColumn, $translationColumn,
$languageColumn, $categoryColumn, $stringColumn,
$languageColumn,
$categoryColumn,
$stringColumn
)
)->execute();
}
}
protected function _getTranslationsFromDB(string $string=NULL, string $category=NULL, string $language=NULL) {
$this->_initTranslationDB();
$criteria = [];
if ($string) {
$criteria[$this->StringColumn] = $string;
}
if ($category) {
$criteria[$this->CategoryColumn] = $category;
}
if ($language) {
$criteria[$this->LanguageColumn] = $language;
}
$sql = 'SELECT * FROM ' . $this->Connection->quoteTableName($this->TableName);
$params = [];
if ($criteria) {
$sql .= ' WHERE ';
$sqlCriteria = [];
foreach ($criteria as $column => $value) {
$sqlCriteria[] = sprintf(
'%s = ?',
$this->Connection->quoteColumnName($column)
);
$params[] = $value;
}
$sql .= implode(' AND ', $sqlCriteria);
}
$command = $this->Connection->createCommand($sql);
foreach ($params as $index => $param) {
$command->bindValue($index + 1, $param);
}
return $command->query()->readAll();
}
protected function _insertTranslation(string $string, string $category, string $language) {
$sql = sprintf(
'INSERT INTO %s(%s, %s, %s) VALUES(?, ?, ?)',
$this->Connection->quoteTableName($this->TableName),
$this->Connection->quoteColumnName($this->LanguageColumn),
$this->Connection->quoteColumnName($this->CategoryColumn),
$this->Connection->quoteColumnName($this->StringColumn)
);
$command = $this->Connection->createCommand($sql);
$command->bindValue(1, $language);
$command->bindValue(2, $category);
$command->bindValue(3, $string);
$command->execute();
}
protected function _getTranslationFromDB(string $string=NULL, string $category=NULL, string $language=NULL) {
if (!$language) {
$language = $this->Application->getGlobalization()->getCulture();
}
$dbResult = $this->_getTranslationsFromDB($string, $category, $language);
if ($dbResult) {
return $dbResult[0][$this->TranslationColumn] ?: '';
} else {
$this->_insertTranslation($string, $category, $language);
return NULL;
}
return NULL;
}
private $_rebuildCache = FALSE;
public function getTranslation(string $string, string $category, string $language=NULL) {
$cacheString = $this->_getTranslationFromCache($string, $category, $language);
if ($cacheString !== NULL) {
return $cacheString ?: $string;
} else {
$dbString = $this->_getTranslationFromDB($string, $category, $language);
$this->_rebuildCache = TRUE;
return $dbString ?: $string;
}
return $string;
}
public function init($config) {
parent::init($config);
$this->Application->attachEventHandler('OnEndRequest', [$this, 'rebuildCache']);
}
}
?>
|