const string Pattern = @"(?si)<([^\s<]*totalWork[^\s<]*)>.*?</\1>";
var filter = Builders<JobInfoRecord>.Filter.Regex(x => x.SerializedBackgroundJobInfo,
new BsonRegularExpression(Pattern, "i"));
var documents = await records.Find(filter).ToListAsync();
====如何更新Mongo方面的文档?
我得到documents
后,我跟在我身边的每个文档工作。
const string EmptyTag = "<$1></$1>";
var updatedJobInfo = Regex.Replace(document.SerializedBackgroundJobInfo, Pattern, EmptyTag);
我该怎么做在蒙戈方Regex.Replace
?或者只能在客户端发生?
以下Replace
作品在蒙戈方面?
using (var cursor = await jobInfoDocuments.FindAsync<JobInfoRecord>(filter))
{
while (await cursor.MoveNextAsync())
{
var batch = cursor.Current;
foreach (var document in batch)
{
var newInfo = Regex.Replace(document.SerializedBackgroundJobInfo, regex, EmptyTag);
// Applying several operations within the one request.
operationList.Add(new UpdateOneModel<JobInfoRecord>(Builders<JobInfoRecord>.Filter.Eq("_id", document.JobId),
Builders<JobInfoRecord>.Update.Set("SerializedBackgroundJobInfo", newInfo)));
}
哎哟!显然应该在发布赏金之前将这个问题作为重复来解决。请参阅[MongoDB:使用来自同一文档的数据更新文档](http://stackoverflow.com/a/3792958/2313887),这意味着“循环”,而不是接受答案中字段重命名的轻微重构。这里唯一实际的事情是你已经得到的答案[如何提高Mongo更新操作的性能?](http://stackoverflow.com/a/36191579/5031275) –
Regex.replace不支持MongoDB服务器端,所以如果你有特殊需求,它必须在客户端完成。 – Saleem