struct GNUNET_TIME_Absolute expiration, char **msg);
+/**
+ * An processor over a set of keys stored in the datastore.
+ *
+ * @param cls closure
+ * @param key key in the data store
+ * @param count how many values are stored under this key in the datastore
+ */
+typedef void (*PluginKeyProcessor) (void *cls,
+ const GNUNET_HashCode *key,
+ unsigned int count);
+
+
+/**
+ * Get all of the keys in the datastore.
+ *
+ * @param cls closure
+ * @param proc function to call on each key
+ * @param proc_cls closure for proc
+ */
+typedef void (*PluginGetKeys) (void *cls,
+ PluginKeyProcessor proc, void *proc_cls);
+
+
/**
* Get one of the results for a particular key in the datastore.
*
* there may be!
* @param type entries of which type are relevant?
* Use 0 for any type.
+ * @param min find the smallest key that is larger than the given min,
+ * NULL for no minimum (return smallest key)
* @param proc function to call on the matching value;
* proc should be called with NULL if there is no result
* @param proc_cls closure for proc
PluginDatumProcessor proc, void *proc_cls);
-
/**
* Get a random item (additional constraints may apply depending on
* the specific implementation). Calls 'proc' with all values ZERO or
void *proc_cls);
+
+
/**
* Update the priority for a particular key in the datastore. If
* the expiration time in value is different than the time found in
*/
PluginDrop drop;
+ /**
+ * Iterate over all keys in the database.
+ */
+ PluginGetKeys get_keys;
+
};