[英]Posting multiple documents to CouchDB using myCouch
I'm migrating an SQL database to couchDB. 我正在将SQL数据库迁移到bedDB。 I'm having problem when I post multiple documents, say around 8K doc ids. 发布多个文档(例如约8K文档ID)时出现问题。 Code below: 代码如下:
MyClass cl = new MyClass();
foreach (DataRow row in dteqEvent.Rows)
{
NewSnDocument pn = new NewSnDocument();
pn.id = row[1].ToString(); //this is the document id
pn.val = row[2].ToString();
string json = JsonConvert.SerializeObject(pn);
cl.PostToCouch(json); //method under MyClass to post documents
}
Then under MyClass I have the method below: 然后在MyClass下,我有以下方法:
public async void PostToCouch(string json)
{
using (var client = new MyCouchClient(HostServer, Database))
{
var resp = await client.Documents.PostAsync(json);
Console.WriteLine(resp.StatusCode);
}
}
The first 2K ids are POSTed successfully then it gives me an error after that. 成功发布了前2K个ID,之后又给了我一个错误。 Error says: "Unable to connect to the remote server." 错误消息:“无法连接到远程服务器。” InnerException states "No connection could be made because the target machine actively refused it." InnerException状态:“由于目标计算机主动拒绝连接,因此无法建立连接。” Is this something to do with my couchDB configuration. 这与我的ouchDB配置有关。
Is there an alternative way of POSTing multiple documents. 有没有其他方法可以发布多个文档。 I saw a bulk operation in MyCouch but it is not clear to me: https://github.com/danielwertheim/mycouch/wiki/documentation#bulk-operations Thanks in advance! 我在MyCouch中看到了一个批量操作,但我不清楚: https : //github.com/danielwertheim/mycouch/wiki/documentation#bulk-operations预先感谢!
UPDATE: Alright I managed to solve my problem by tweaking the code a little bit: 更新:好的,我通过稍微调整代码来解决了我的问题:
MyClass cl = new MyClass();
List<NewSnDocument> pnList = new List<NewSnDocument>();
foreach (DataRow row in dteqEvent.Rows)
{
NewSnDocument pn = new NewSnDocument();
pn.id = row[1].ToString(); //this is the document id
pn.val = row[2].ToString();
pnList.Add(pn);
}
cl.PostToCouch(pnList);
Then method under MyClass: 然后是MyClass下的方法:
public async void PostToCouch(List<NewSnDocument> obj)
{
int r = obj.Count;
using (var client = new MyCouchClient(HostServer, Database))
{
for(int i=0; i<r; i++)
{
string json = JsonConvert.SerializeObject(obj[i]);
var resp = await client.Documents.PostAsync(json);
Console.WriteLine(resp.StatusCode);
}
}
I think even your updated code doesn't look right. 我认为即使您更新的代码也不正确。 I'm not sure, please take a look at the comments/modifications I made in your code: 我不确定,请查看我在您的代码中所做的评论/修改:
MyClass cl = new MyClass();
List<NewSnDocument> pnList = new List<NewSnDocument>(); //List of documents
foreach (DataRow row in dteqEvent.Rows)
{
NewSnDocument pn = new NewSnDocument();
pn.id = row[1].ToString();
pn.val = row[2].ToString();
// cl.PostToCouch(pnList);
pnList.push(pn);//You need to push each document to the list of documents
//I'm not sure about C#, but there should some "push" method
//or something equivalent to "push"
}
cl.PostToCouch(pnList);//"pnList" contains a list of documents
//So it should be posted to CouchDB outside "foreach" loop
//After all documents have been pushed into it
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