/**
* Retrieves the table schema information about the given table
*
* This function try to get the table schema from the cache. If it cannot be found the table schema will be
* retrieved from the database and stored in the cache.
*
* @param string $table A table name or a list of table names
* @return KDatabaseSchemaTable
*/
public function getTableSchema($table)
{
if (!isset($this->_table_schema[$table]) && isset($this->_cache)) {
$identifier = md5($this->getDatabase() . $table);
if (!($schema = $this->_cache->get($identifier))) {
$schema = parent::getTableSchema($table);
//Store the object in the cache
$this->_cache->store(serialize($schema), $identifier);
} else {
$schema = unserialize($schema);
}
$this->_table_schema[$table] = $schema;
}
return parent::getTableSchema($table);
}
