public RouteResult Route(ShardingRule shardingRule)
{
ICollection <RouteResult> result = new List <RouteResult>(logicTables.Count);
ICollection <String> bindingTableNames = new SortedSet <string>(StringComparer.OrdinalIgnoreCase);
foreach (var logicTable in logicTables)
{
var tableRule = shardingRule.FindTableRule(logicTable);
if (tableRule != null)
{
if (!bindingTableNames.Contains(logicTable))
{
result.Add(new ShardingStandardRoutingEngine(tableRule.LogicTable, sqlStatementContext, shardingConditions, properties).Route(shardingRule));
}
shardingRule.FindBindingTableRule(logicTable).IfPresent(bindingTableRule => bindingTableNames.AddAll(
bindingTableRule.GetTableRules().Select(o => o.LogicTable).ToList()));
}
}
if (result.IsEmpty())
{
throw new ShardingException($"Cannot find table rule and default data source with logic tables: '{logicTables}'");
}
if (1 == result.Count)
{
return(result.First());
}
return(new ShardingCartesianRoutingEngine(result).Route(shardingRule));
}
private List <IRouteValue> GetShardingValuesFromShardingConditions(ShardingRule shardingRule, ICollection <string> shardingColumns, ShardingCondition shardingCondition)
{
List <IRouteValue> result = new List <IRouteValue>(shardingColumns.Count);
foreach (var routeValue in shardingCondition.RouteValues)
{
var bindingTableRule = shardingRule.FindBindingTableRule(LogicTableName);
if ((LogicTableName.Equals(routeValue.GetTableName()) || bindingTableRule != null && bindingTableRule.HasLogicTable(LogicTableName)) &&
shardingColumns.Contains(routeValue.GetColumnName()))
{
result.Add(routeValue);
}
}
return(result);
}
