Peerplays_Blockchain/peerplays_migrated
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add simple pagination to get_asset_holders

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root 2017-06-14 17:47:18 +00:00
parent bd9b3248ea
commit b307557182
2 changed files with 16 additions and 2 deletions
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16
libraries/app/api.cpp
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@ -625,17 +625,26 @@ namespace graphene { namespace app {
asset_api::asset_api(graphene::chain::database& db) : _db(db) { } asset_api::asset_api(graphene::chain::database& db) : _db(db) { }
asset_api::~asset_api() { } asset_api::~asset_api() { }
vector<account_asset_balance> asset_api::get_asset_holders( asset_id_type asset_id ) const { vector<account_asset_balance> asset_api::get_asset_holders( asset_id_type asset_id, uint32_t start, uint32_t limit ) const {
FC_ASSERT(limit <= 100);
const auto& bal_idx = _db.get_index_type< account_balance_index >().indices().get< by_asset_balance >(); const auto& bal_idx = _db.get_index_type< account_balance_index >().indices().get< by_asset_balance >();
auto range = bal_idx.equal_range( boost::make_tuple( asset_id ) ); auto range = bal_idx.equal_range( boost::make_tuple( asset_id ) );
vector<account_asset_balance> result; vector<account_asset_balance> result;
uint32_t total_counter = 0;
uint32_t start_counter = 0;
for( const account_balance_object& bal : boost::make_iterator_range( range.first, range.second ) ) for( const account_balance_object& bal : boost::make_iterator_range( range.first, range.second ) )
{ {
//wdump((bal));
if( bal.balance.value == 0 ) continue; if( bal.balance.value == 0 ) continue;
start_counter++;
if( start >= start_counter ) continue;
auto account = _db.find(bal.owner); auto account = _db.find(bal.owner);
account_asset_balance aab; account_asset_balance aab;
@ -644,6 +653,11 @@ namespace graphene { namespace app {
aab.amount = bal.balance.value; aab.amount = bal.balance.value;
result.push_back(aab); result.push_back(aab);
if(total_counter >= limit) break;
total_counter++;
} }
return result; return result;

2
libraries/app/include/graphene/app/api.hpp
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@ -305,7 +305,7 @@ namespace graphene { namespace app {
asset_api(graphene::chain::database& db); asset_api(graphene::chain::database& db);
~asset_api(); ~asset_api();
vector<account_asset_balance> get_asset_holders( asset_id_type asset_id )const; vector<account_asset_balance> get_asset_holders( asset_id_type asset_id, uint32_t start, uint32_t limit )const;
int get_asset_holders_count( asset_id_type asset_id )const; int get_asset_holders_count( asset_id_type asset_id )const;
vector<asset_holders> get_all_asset_holders() const; vector<asset_holders> get_all_asset_holders() const;