/// <summary>
/// 得到查询分片
/// </summary>
/// <param name="query"></param>
/// <returns></returns>
public virtual IList <ShardingInfo> GetQuerySharding(QueryInfo query)
{
var names = query.GetRouteParameters(query.WhereExp);
if (names == null)
{
return(null);
}
var tableIndexs = GetQueryTableIndex(names);
if (tableIndexs == null)
{
return(null);
}
var dataBaseIndex = GetQueryDataBaseIndex(names);
var getDataBase = string.Format("BeeantAccountRead{0}", dataBaseIndex);
var result = new List <ShardingInfo>();
foreach (var tableIndex in tableIndexs)
{
result.Add(new ShardingInfo
{
GetDataBase = getDataBase,
TableIndex = tableIndex
});
}
return(result);
}
/// <summary>
/// 得到读的路由
/// </summary>
/// <param name="query"></param>
/// <returns></returns>
public virtual IList <QueryInfo> GetRouteQueries(QueryInfo query)
{
if (string.IsNullOrEmpty(query.Object.RouteName) || !DbRoutes.ContainsKey(query.Object.RouteName))
{
return(null);
}
var dbRoute = DbRoutes[query.Object.RouteName];
query.DbRoute = dbRoute;
var handleQueries = GetHandleQueries(dbRoute, query);
if (handleQueries != null && handleQueries.Count > 0)
{
return(handleQueries);
}
if (dbRoute.Rules == null || dbRoute.Rules.Count == 0 || dbRoute.Shardings == null || dbRoute.Shardings.Count == 0)
{
return(null);
}
var names = query.GetRouteParameters(query.WhereExp);
if (names != null && names.Count > 0)
{
foreach (var rule in dbRoute.Rules)
{
if (!names.ContainsKey(rule.PropertyName))
{
continue;
}
var paramterValues = names[rule.PropertyName];
var result = new List <QueryInfo>();
foreach (var paramterValue in paramterValues)
{
if (paramterValue is Array)
{
var arr = paramterValue as Array;
foreach (var ar in arr)
{
if (ar == null)
{
continue;
}
var value = rule.IsHash ? GenerateLongId(ar.ToString()) : ar;
var shardings = GetShardings(dbRoute, rule.PropertyName, value, false);
if (shardings == null || shardings.Count == 0)
{
continue;
}
foreach (var sharding in shardings)
{
var cloneQuery = GetQuery(dbRoute, query, sharding);
if (cloneQuery != null &&
result.Count(
it =>
it.GetDataBase == cloneQuery.GetDataBase &&
it.GetTableName == cloneQuery.GetTableName) == 0)
{
result.Add(cloneQuery);
}
}
}
}
else
{
if (paramterValue == null)
{
continue;
}
var value = rule.IsHash ? GenerateLongId(paramterValue.ToString()) : paramterValue;
var shardings = GetShardings(dbRoute, rule.PropertyName, value, false);
if (shardings == null || shardings.Count == 0)
{
continue;
}
AppendQueryByShardings(result, dbRoute, shardings, query);
}
}
if (result.Count == 1)
{
result[0].PageIndex = query.PageIndex;
result[0].PageSize = query.PageSize;
}
else if (result.Count > 1 && dbRoute.TopCount > 0 && (query.PageSize + query.PageIndex * query.PageSize) > dbRoute.TopCount)
{
throw new LimitCountOverflowException(string.Format("Limit Count Is {0}", dbRoute.TopCount));
}
if (result.Count > 0)
{
return(result);
}
}
}
if (dbRoute.TopCount > 0 && (query.PageSize + query.PageIndex * query.PageSize) > dbRoute.TopCount)
{
throw new LimitCountOverflowException(string.Format("Limit Count Is {0}", dbRoute.TopCount));
}
return(GetAllQueries(dbRoute, query));
}
