/// <summary>
/// 删除一个子文档
/// </summary>
public void DeleteSubDoc()
{
//过滤器作用与Field2C字段，过滤条件是Field1B = 1
var update = Builders <Model2> .Update.PullFilter(m => m.Field2C, (y => y.Field1B == 2));
//父文档过滤条件为Field2A=2，如果匹配出多个父文档，只操作第一个文档
mongoDBService.UpdateOne <Model2>(collectionName, m => m.Field2A == "2", update);
}
//5 更新两个账户的待处理事务链表,移除事务标识
private bool UpdateAccount(TransactionDocumentP t, string source, string destination, TimeSpan maxTxnTime)
{
FilterDefinitionBuilder <AccountP> filterBuilderS = Builders <AccountP> .Filter;
FilterDefinition <AccountP> filterS = filterBuilderS.Eq(doc => doc._id, source);
var updateS = Builders <AccountP> .Update.Pull(doc => doc.PendingTransactions, t._id);
bool isSucc = mongoDBService.UpdateOne(AccountsCollectionName, filterS, updateS);
while (true)
{
if (isSucc)
{
break;
}
bool timeOut = CheckTimeOut(t, maxTxnTime);
if (timeOut)
{
break;
}
isSucc = mongoDBService.UpdateOne(AccountsCollectionName, filterS, updateS);
}
if (!isSucc)
{
return(isSucc);
}
FilterDefinitionBuilder <AccountP> filterBuilderD = Builders <AccountP> .Filter;
FilterDefinition <AccountP> filterD = filterBuilderD.Eq(doc => doc._id, destination);
var updateD = Builders <AccountP> .Update.Pull(doc => doc.PendingTransactions, t._id);
isSucc = mongoDBService.UpdateOne(AccountsCollectionName, filterD, updateD);
while (true)
{
if (isSucc)
{
break;
}
bool timeOut = CheckTimeOut(t, maxTxnTime);
if (timeOut)
{
break;
}
isSucc = mongoDBService.UpdateOne(AccountsCollectionName, filterD, updateD);
}
return(isSucc);
}