Implement load_secondary_i128i128

libraries/chain/include/eos/chain/message_handling_contexts.hpp

@@ -52,6 +52,8 @@ public:
                                     uint128_t* primary, uint128_t* secondary, char* data, uint32_t maxlen );
    int32_t load_primary_i128i128( Name scope, Name code, Name table, 
                                     uint128_t* primary, uint128_t* secondary, char* data, uint32_t maxlen );
+   int32_t load_secondary_i128i128( Name scope, Name code, Name table, 
+                                    uint128_t* primary, uint128_t* secondary, char* data, uint32_t maxlen );
    int32_t lowerbound_primary_i128i128( Name scope, Name code, Name table, 
                                     uint128_t* primary, uint128_t* secondary, char* data, uint32_t maxlen );
    int32_t lowerbound_secondary_i128i128( Name scope, Name code, Name table, 

libraries/chain/message_handling_contexts.cpp

@@ -229,6 +229,32 @@ int32_t message_validate_context::load_primary_i128i128( Name scope, Name code,
     }
     return copylen;
 }
+
+int32_t message_validate_context::load_secondary_i128i128( Name scope, Name code, Name table, 
+                                 uint128_t* primary, uint128_t* secondary, char* value, uint32_t valuelen ) {
+
+    require_scope( scope );
+    const auto& idx = db.get_index<key128x128_value_index,by_scope_secondary>();
+    auto itr = idx.lower_bound( boost::make_tuple( uint64_t(scope), 
+                                                   uint64_t(code), 
+                                                   uint64_t(table), 
+                                                  *secondary, uint128_t(0) ) );
+
+    if( itr == idx.end() ||
+        itr->scope != (scope) ||
+        itr->code != (code) ||
+        itr->table != (table) ||
+        itr->secondary_key != *secondary ) return -1;
+
+    *primary = itr->primary_key;
+    
+    auto copylen =  std::min<size_t>(itr->value.size(),valuelen);
+    if( copylen ) {
+       itr->value.copy(value, copylen);
+    }
+    return copylen;
+}
+
 int32_t message_validate_context::lowerbound_primary_i128i128( Name scope, Name code, Name table, 
                                  uint128_t* primary, uint128_t* secondary, char* value, uint32_t valuelen ) {