/**
* 框架错误
* @param objcet $e 错误对象
* @return viod
*/
public function appError($e)
{
if (404 == $e->getCode()) {
$action = 'error404';
} else {
$action = 'error';
}
obj('base/Error', 'controller')->{$action}($e);
}
/**
* Build a temporary table with the list of IDs of records we need to update.
* The table has a deleted flag to indicate newly deleted records.
* @param objcet $db Database connection.
* @param string $table Name of the table being cached, e.g. occurrences.
* @param string $query A query which selects a list of IDs for all new, updated or
* deleted records (including looking for updates or deletions caused by related
* records).
* @param string $last_run_date Date/time of the last time the cache builder was
* run, used to filter records to only the recent changes. Supplied as a string
* suitable for injection into an SQL query.
*/
private static function get_changelist($db, $table, $queries, $last_run_date)
{
$query = str_replace('#date#', $last_run_date, $queries['get_changed_items_query']);
$db->query("create temporary table needs_update_{$table} as {$query}");
if (!variable::get("populated-{$table}")) {
// as well as the changed records, pick up max 5000 previous records, which is important for initial population.
// 5000 is an arbitrary number to compromise between performance and cache population.
// of the cache
$query = $queries['get_missing_items_query'] . ' limit 5000';
$result = $db->query("insert into needs_update_{$table} {$query}");
if ($result->count() === 0) {
// Flag that we don't need to do any more previously existing records as they are all done.
// Future cache updates can just pick up changes from now on.
variable::set("populated-{$table}", true);
echo "{$table} population completed<br/>";
}
}
$db->query("ALTER TABLE needs_update_{$table} ADD CONSTRAINT ix_nu_{$table} PRIMARY KEY (id)");
$r = $db->query("select count(*) as count from needs_update_{$table}")->result_array(false);
$row = $r[0];
if (variable::get("populated-{$table}")) {
if ($row['count'] > 0) {
echo "Updating {$table} with {$row['count']} changes<br/>";
} else {
echo "No changes for {$table}<br/>";
}
}
return $row['count'];
}
