From 2d4f18280f8f22cb30cfba1a4e6985ce1531aa0d Mon Sep 17 00:00:00 2001
From: SynaptiCAD User <syncad@dhcp215.syncad.com>
Date: Sun, 19 Mar 2017 22:12:31 -0400
Subject: [PATCH] [DLN] implement list_betting_market_groups(event_id)

---
 libraries/app/database_api.cpp                 | 18 ++++++++++++++++--
 .../app/include/graphene/app/database_api.hpp  |  6 ++++++
 .../graphene/chain/betting_market_object.hpp   |  6 +++++-
 3 files changed, 27 insertions(+), 3 deletions(-)

diff --git a/libraries/app/database_api.cpp b/libraries/app/database_api.cpp
index ee3f8c30..b44a867d 100644
--- a/libraries/app/database_api.cpp
+++ b/libraries/app/database_api.cpp
@@ -96,8 +96,9 @@ class database_api_impl : public std::enable_shared_from_this<database_api_impl>
       vector<optional<asset_object>> lookup_asset_symbols(const vector<string>& symbols_or_ids)const;
 
       // Peerplays
-      vector<sport_object>           list_sports() const; 
-      vector<event_group_object>     list_event_groups(sport_id_type sport_id) const;
+      vector<sport_object>                list_sports() const; 
+      vector<event_group_object>          list_event_groups(sport_id_type sport_id) const;
+      vector<betting_market_group_object> list_betting_market_groups(event_id_type) const;
 
       // Markets / feeds
       vector<limit_order_object>         get_limit_orders(asset_id_type a, asset_id_type b, uint32_t limit)const;
@@ -911,6 +912,19 @@ vector<event_group_object> database_api_impl::list_event_groups(sport_id_type sp
    }
    return result;
 }
+
+vector<betting_market_group_object> database_api_impl::list_betting_market_groups(event_id_type event_id) const
+{
+   vector<betting_market_group_object> result;
+   const auto& betting_market_group_idx = _db.get_index_type<betting_market_group_object_index>().indices().get<by_event_id>();
+   for (const betting_market_group_object& betting_market_group : betting_market_group_idx)
+   {
+      result.emplace_back(betting_market_group);
+   }
+   return result;
+}
+
+
 //////////////////////////////////////////////////////////////////////
 //                                                                  //
 // Markets / feeds                                                  //
diff --git a/libraries/app/include/graphene/app/database_api.hpp b/libraries/app/include/graphene/app/database_api.hpp
index 28cf6af1..8cdfa9a7 100644
--- a/libraries/app/include/graphene/app/database_api.hpp
+++ b/libraries/app/include/graphene/app/database_api.hpp
@@ -40,6 +40,7 @@
 #include <graphene/chain/proposal_object.hpp>
 #include <graphene/chain/sport_object.hpp>
 #include <graphene/chain/event_group_object.hpp>
+#include <graphene/chain/betting_market_object.hpp>
 
 #include <graphene/chain/worker_object.hpp>
 #include <graphene/chain/witness_object.hpp>
@@ -329,6 +330,11 @@ class database_api
        */
       vector<event_group_object> list_event_groups(sport_id_type sport_id) const;
 
+      /**
+       * @brief Return a list of all betting market groups for an event
+       */
+      vector<betting_market_group_object> list_betting_market_groups(event_id_type) const;
+
       /////////////////////
       // Markets / feeds //
       /////////////////////
diff --git a/libraries/chain/include/graphene/chain/betting_market_object.hpp b/libraries/chain/include/graphene/chain/betting_market_object.hpp
index a7357c4e..99586fff 100644
--- a/libraries/chain/include/graphene/chain/betting_market_object.hpp
+++ b/libraries/chain/include/graphene/chain/betting_market_object.hpp
@@ -31,6 +31,8 @@ namespace graphene { namespace chain {
 
 class database;
 
+struct by_event_id;
+
 class betting_market_group_object : public graphene::db::abstract_object< betting_market_group_object >
 {
    public:
@@ -77,7 +79,9 @@ class bet_object : public graphene::db::abstract_object< bet_object >
 typedef multi_index_container<
    betting_market_group_object,
    indexed_by<
-      ordered_unique< tag<by_id>, member< object, object_id_type, &object::id > > > > betting_market_group_object_multi_index_type;
+      ordered_unique< tag<by_id>, member< object, object_id_type, &object::id > >,
+      ordered_non_unique< tag<by_event_id>, member<betting_market_group_object, event_id_type, &betting_market_group_object::event_id > >
+   > > betting_market_group_object_multi_index_type;
 typedef generic_index<betting_market_group_object, betting_market_group_object_multi_index_type> betting_market_group_object_index;
 
 typedef multi_index_container<