Comment added for tx queries

irohad/ametsuchi/CMakeLists.txt

@@ -18,4 +18,5 @@ target_link_libraries(storage PUBLIC
     block_store
     index
     wsv
+    rxcpp
     )

irohad/ametsuchi/query_api.hpp

@@ -69,24 +69,24 @@ namespace iroha {
       virtual std::vector<iroha::dao::Asset> get_domain_assets(
           std::string domain_full_name) = 0;
       /**
-       *
-       * @param pub_key
-       * @return
+       * Get all transactions of an account.
+       * @param pub_key - account's first public key
+       * @return observable of DAO Transaction
        */
       virtual rxcpp::observable<iroha::dao::Transaction>
       get_account_transactions(iroha::crypto::ed25519::pubkey_t pub_key) = 0;
 
       /**
-       *
-       * @param asset_full_name
-       * @return
+       * Get all transactions with a certain asset
+       * @param asset_full_name - full name of an asset, i.e. name#domain
+       * @return observable of DAO Transaction
        */
       virtual rxcpp::observable<iroha::dao::Transaction> get_asset_transactions(
           std::string asset_full_name) = 0;
       /**
-       *
-       * @param wallet_id
-       * @return
+       * Get all transactions of a certain wallet
+       * @param wallet_id - unique wallet
+       * @return observable of DAO Transaction
        */
       virtual rxcpp::observable<iroha::dao::Transaction>
       get_wallet_transactions(std::string wallet_id) = 0;