Hi I am trying to make a generic method to return a single value from the database
I am not sure where to put the return result, value is returned as a BSON document.I need 1 value from it....
public static string SearchMongoSingleValue(string key, string value, string ducument, string datatable)
{
var connectionString = "mongodb://localhost";
var client = new MongoClient(connectionString);
var server = client.GetServer();
var database = server.GetDatabase(datatable);
var collection = database.GetCollection(ducument);
var query = Query.EQ(key, value);
var oneDocument = collection.FindOne(query);
return oneDocument[value];
Thanks
I think you need oneDocument[key] and not oneDocument[value]. Just tested this code:
using MongoDB.Driver;
using MongoDB.Bson;
using MongoDB.Driver.Builders;
var client = new MongoClient("mongodb://localhost");
var coll = client.GetServer().GetDatabase("local").GetCollection("test1");
var doc = new BsonDocument();
doc.Add("Name","John");
doc.Add("Color","Red");
coll.Insert(doc);
var query = Query.EQ("Name", "John");
var doc2 = coll.FindOne(query);
var value = doc2["Color"];
It returns "Red" allright
Related
I need to get current iteration's path from TFS project. I'm able to use REST API query <server>/<project>/_apis/work/teamsettings/iterations?$timeframe=current&api-version=v2.0-preview but I don't want to perform query and parse JSON response. I want to use appropriate API in .NET client libraries for VSTS (and TFS).
I have an instance of the VssConnection. How can I get the path of current iteration from this object?
You can get the current iteration using the WorkHttpClient without having to iterate:
var creds = new VssBasicCredential(string.Empty, "personalaccesstoken");
VssConnection connection = new VssConnection(new Uri("url"), creds);
var workClient = connection.GetClient<WorkHttpClient>();
var teamContext = new TeamContext(teamId);
teamContext.ProjectId = projectId;
var currentIteration = await workClient.GetTeamIterationsAsync(teamContext, "current");
The simplest way I've found to do it was by using ICommonStructureService4 and TeamSettingsConfigurationService methods:
static TfsTeamProjectCollection _tfs = TfsTeamProjectCollectionFactory
.GetTeamProjectCollection("<tfsUri>")
(...)
static string GetCurrentIterationPath()
{
var css = _tfs.GetService<ICommonStructureService4>();
var teamProjectName = "<teamProjectName>";
var project = css.GetProjectFromName(teamProjectName);
var teamName = "<teamName>";
var teamSettingsStore =
_tfs.GetService<TeamSettingsConfigurationService>();
var settings = teamSettingsStore
.GetTeamConfigurationsForUser(new[] { project.Uri })
.Where(c => c.TeamName == teamName)
.FirstOrDefault();
if (settings == null)
{
var currentUser = System.Threading.Thread.CurrentPrincipal.Identity.Name;
throw new InvalidOperationException(
$"User '{currentUser}' doesn't have access to '{teamName}' team project.");
}
return settings.TeamSettings.CurrentIterationPath;
}
And returning the TeamSettings.CurrentIterationPath property.
I found a solution using VssConnection:
var workClient = connection.GetClient<WorkHttpClient>();
var iterations = workClient.GetTeamIterationsAsync(new TeamContext("project-name")).Result;
var currentDate = DateTime.Now.Date;
var currentIterationPath = iterations
.Select(i => new { i.Path, i.Attributes })
.FirstOrDefault(i => currentDate >= i.Attributes.StartDate &&
currentDate <= i.Attributes.FinishDate)
?.Path;
Here is a case provides a solution: Get the current iteration path from TFS
private static XmlNode currentIterationNode;
TfsTeamProjectCollection tpc = TFSConncetion(#"http://tfs/url");
ICommonStructureService4 css = tpc.GetService<ICommonStructureService4>();;
WorkItemStore workItemStore = new WorkItemStore(tpc);
foreach (Project teamProject in workItemStore.Projects)
{
if (teamProject.Name.Equals("TeamProjectNameGoesHere"))
{
NodeInfo[] structures = css.ListStructures(teamProject.Uri.ToString());
NodeInfo iterations = structures.FirstOrDefault(n => n.StructureType.Equals("ProjectLifecycle"));
if (iterations != null)
{
XmlElement iterationsTree = css.GetNodesXml(new[] { iterations.Uri }, true);
XmlNodeList nodeList = iterationsTree.ChildNodes;
currentIterationNode = FindCurrentIteration(nodeList);
String currentIterationPath = currentIterationNode.Attributes["Path"].Value;
}
}
}
I'm a beginner for coding ,and I was trying to create a search engine , but there s a part I dont know how to solve it that returns an IList as a generic,
public IList<T> Search<T>(string textSearch)
{
IList<T> list = new List<T>();
var result = new DataTable();
using (Analyzer analyzer = new PanGuAnalyzer())
{
var queryParser = new QueryParser(Version.LUCENE_30, "FullText", analyzer);
queryParser.AllowLeadingWildcard = true;
var query = queryParser.Parse(textSearch);
var collector = TopScoreDocCollector.Create(1000, true);
Searcher.Search(query, collector);
var matches = collector.TopDocs().ScoreDocs;
result.Columns.Add("Title");
result.Columns.Add("Starring");
result.Columns.Add("ID");
foreach (var item in matches)
{
var id = item.Doc;
var doc = Searcher.Doc(id);
var row = result.NewRow();
row["Title"] = doc.GetField("Title").StringValue;
row["Starring"] = doc.GetField("Starring").StringValue;
row["ID"] = doc.GetField("ID").StringValue;
result.Rows.Add(row);
}
}
return result;
}
but in this code , I couldn't return result ,it says Cannot Implicitly convert type 'Data.DataTable' to 'Generic.IList',An explicit conversion exists.so how can I solve this?
I guess you don't want to support generics since it doesn't make sense and is impossible. You have a class, for example Film, then return a List<Film>, you don't need the DataTable:
public IList<Film> SearchFilms(string textSearch)
{
IList<Film> list = new List<Film>();
using (Analyzer analyzer = new PanGuAnalyzer())
{
var queryParser = new QueryParser(Version.LUCENE_30, "FullText", analyzer);
queryParser.AllowLeadingWildcard = true;
var query = queryParser.Parse(textSearch);
var collector = TopScoreDocCollector.Create(1000, true);
Searcher.Search(query, collector);
var matches = collector.TopDocs().ScoreDocs;
foreach (var item in matches)
{
var film = new Film();
var id = item.Doc;
var doc = Searcher.Doc(id);
film.Title = doc.GetField("Title").StringValue;
film.Starring = doc.GetField("Starring").StringValue;
film.ID = doc.GetField("ID").StringValue;
list.Add(film);
}
}
return list;
}
Your return statement should be
result.AsEnumerable().ToList();
Don't forget to add namespace
using System.Linq;
Basically here's my code which I'm having trouble with. Insanely new to mongoDB and would love to understand how to get values out of a JSON string that is returns in the variable 'line'.
public string get_data()
{
var client = new MongoClient();
var db = client.GetDatabase("test");
var collection = db.GetCollection<BsonDocument>("metacorp");
var cursor = collection.Find("{'movie_name' : 'Hemin'}").ToCursor();
var line = "";
foreach (var document in cursor.ToEnumerable())
{
using (var stringWriter = new StringWriter())
using (var jsonWriter = new JsonWriter(stringWriter))
{
var context = BsonSerializationContext.CreateRoot(jsonWriter);
collection.DocumentSerializer.Serialize(context, document);
line = stringWriter.ToString();
}
}
var js = new JavaScriptSerializer();
var d = js.Deserialize<dynamic>(line);
var a = d["movie_name"];
return line;
}
This is the output I get if I return line:
{ "_id" : ObjectId("58746dcafead398e4d7233f5"), "movie_name" : "Hemin"
}
I want to be able to fetch the value 'Hemin' into 'a'.
I know this is not what you're asking for but since you're using the c# driver then I would recommend the following. Assumes you have a c# class corresponding to metacorp collection or at least a serializer that handles it. Hope it helps.
var client = new MongoClient();
var db = client.GetDatabase("test");
var collection = db.GetCollection<MetaCorp>("metacorp");
var m = collection.SingleOrDefault(x => x.Movie_Name == "Hemin"); // Assuming 0 or 1 with that name. Use Where otherwise
var movieName = "Not found";
if(m!= null)
movieName = m.Movie_Name;
You could have your dto class for movie ans just fetch the data from collection:
public class Movie
{
public ObjectId Id { get; set; }
public string movie_name { get; set;}
}
...
var client = new MongoClient();
var db = client.GetDatabase("test");
var collection = db.GetCollection<BsonDocument>("metacorp");
var movies = collection.Find(x=>x.movie_name == "Hemin").ToEnumerable();
I need to format an XML to a given hierarchy from a list (List<>). The list contains, for the banking information, data spread across multiple rows as shown in the image.
The XML output needs to be formatted like this:
<ROOT>
<DocumentElement>
<Supplier>
<Company>STV</Company>
<Code>000199</Code>
<Name>TrafTrans</Name>
<BankAccounts>
<SupplierBankAccount>
<Bban>220-012510-63</Bban>
<Name>B1</Name>
</SupplierBankAccount>
<SupplierBankAccount>
<Bban>RUIL</Bban>
<Name>RUIL</Name>
</SupplierBankAccount>
</BankAccounts>
<SupplierAddresses>
<SupplierAddress>
<Type>PostalAddress</Type>
<Name>Loc TrafTrans</Name>
<IsDefault>true</IsDefault>
<AddressParts>
<SupplierAddressPart>
<AddressPartKey>STREET_NAME</AddressPartKey>
<AddressPartText>Somewhere</AddressPartText>
</SupplierAddressPart>
<SupplierAddressPart>
<AddressPartKey>COUNTRY</AddressPartKey>
<AddressPartText>SPAIN</AddressPartText>
</SupplierAddressPart>
</AddressParts>
</SupplierAddress>
</SupplierAddresses>
</Supplier>
</DocumentElement>
</ROOT>
I already have a method that converts a list to an XML and returns a string. But the problem is that this only formats one item from the list and there could be additional info in the following items.
public static string SuppliersToXML(List<SupplierItem> supplier)
{
CultureInfo ci = new CultureInfo("en-US");
XmlDocument doc = new XmlDocument();
var root = doc.CreateElement("ROOT");
var rootNode = doc.AppendChild(root);
var docElem = doc.CreateElement("DocumentElement");
var docElemNode = rootNode.AppendChild(docElem);
foreach (var item in supplier)
{
var supplierElem = doc.CreateElement("Supplier");
var companyElem = (XmlNode)doc.CreateElement("Company");
companyElem.InnerText = item.Company.ToString();
//more code...
supplierElem.AppendChild(companyElem);
//more code...
}
return doc.OuterXml;
}
I have found the answer myself, it may not be the prettiest code ever written. But it does the job.
public static string SuppliersToXML(List<SupplierItem> supplier)
{
//A distinct select is needed because bank info can be on multiple lines. So first a list is generated with correct info except for bank information
List<SupplierItem> distinctsupplier = supplier
.GroupBy(p => p.Code)
.Select(g => g.First())
.ToList();
CultureInfo ci = new CultureInfo("en-US");
XmlDocument doc = new XmlDocument();
var root = doc.CreateElement("ROOT");
var rootNode = doc.AppendChild(root);
var docElem = doc.CreateElement("DocumentElement");
var docElemNode = rootNode.AppendChild(docElem);
foreach (var item in distinctsupplier)
{
var supplierElem = doc.CreateElement("Supplier");
var companyElem = (XmlNode)doc.CreateElement("Company");
companyElem.InnerText = item.Company.ToString();
var codeElem = (XmlNode)doc.CreateElement("Code");
codeElem.InnerText = item.Code.ToString();
var codeName = (XmlNode)doc.CreateElement("Name");
codeName.InnerText = item.Name.ToString();
//supplieridentifier part
var supplierIdsElem = doc.CreateElement("SupplierIdentifiers");
var supplierIdElem = doc.CreateElement("SupplierIdentifier");
var supplierIdValueElem = (XmlNode)doc.CreateElement("SupplierIDValue");
supplierIdValueElem.InnerText = item.SupplierIDValue;
//supplieraddress part
var supplierAddressesElem = doc.CreateElement("SupplierAddresses");
var supplierAddressElem = doc.CreateElement("SupplierAddress");
var supplierTypeValueElem = (XmlNode)doc.CreateElement("Type");
supplierTypeValueElem.InnerText = item.Type;
var supplierNameValueElem = (XmlNode)doc.CreateElement("Name");
supplierNameValueElem.InnerText = item.AddressName;
var supplierDefaultValueElem = (XmlNode)doc.CreateElement("IsDefault");
supplierDefaultValueElem.InnerText = item.AddressIsDefault;
//address part
var AddressPartElem = doc.CreateElement("AddressParts");
var supplierAddressPartsElem = doc.CreateElement("SupplierAddressPart");
//Street
var AddressPartElemStreetKeyElem = (XmlNode)doc.CreateElement("AddressPartKey");
AddressPartElemStreetKeyElem.InnerText = item.AddressStreetKey;
var AddressPartElemStreetValueElem = (XmlNode)doc.CreateElement("AddressPartText");
AddressPartElemStreetValueElem.InnerText = item.AddressStreetText;
//Country
var AddressPartElemCountryKeyElem = (XmlNode)doc.CreateElement("AddressPartKey");
AddressPartElemCountryKeyElem.InnerText = item.AddressCountryKey;
var AddressPartElemCountryValueElem = (XmlNode)doc.CreateElement("AddressPartText");
AddressPartElemCountryValueElem.InnerText = item.AddressCountryText;
//add elements to supplierelem
supplierElem.AppendChild(companyElem);
supplierElem.AppendChild(codeElem);
supplierElem.AppendChild(codeName);
//bankaccounts part
var bankAccountElem = doc.CreateElement("BankAccounts");
//select all rows that contain multiple lines, so the bank info can be extracted, for a certain supplier
var bankInformation = supplier.Where(s => s.Code == item.Code).ToList();
foreach (var bankitem in bankInformation)
{
if (item.Code == bankitem.Code)
{
var bankAccountSupplElem = doc.CreateElement("SupplierBankAccount");
var bankAccountBbanElem = doc.CreateElement("Bban");
var bankAccountBbanValueElem = (XmlNode)doc.CreateElement("Bban");
bankAccountBbanValueElem.InnerText = bankitem.Bban;
var bankAccountNameElem = doc.CreateElement("Name");
var bankAccountNameValueElem = (XmlNode)doc.CreateElement("Name");
bankAccountNameValueElem.InnerText = bankitem.BankName;
var bankAccountElemNode = supplierElem.AppendChild(bankAccountElem);
var bankAccountSupplElemNode = bankAccountElemNode.AppendChild(bankAccountSupplElem);
bankAccountSupplElemNode.AppendChild(bankAccountBbanValueElem);
bankAccountSupplElemNode.AppendChild(bankAccountNameValueElem);
}
}
//add address elements to supplierelem
var supplierAddressesElemNode = supplierElem.AppendChild(supplierAddressesElem);
var supplierAddressElemNode = supplierAddressesElemNode.AppendChild(supplierAddressElem);
supplierAddressElemNode.AppendChild(supplierTypeValueElem);
supplierAddressElemNode.AppendChild(supplierNameValueElem);
supplierAddressElemNode.AppendChild(supplierDefaultValueElem);
//add addressparts to supplieraddressesnode
//Street
var AddressPartElemNode = supplierAddressElemNode.AppendChild(AddressPartElem);
var supplierAddressPartsElemNode = AddressPartElemNode.AppendChild(supplierAddressPartsElem);
supplierAddressPartsElemNode.AppendChild(AddressPartElemStreetKeyElem);
supplierAddressPartsElemNode.AppendChild(AddressPartElemStreetValueElem);
//Country (first reinitialize supplieraddresspart)
supplierAddressPartsElem = doc.CreateElement("SupplierAddressPart");
var supplierAddressPartsCountryElemNode = AddressPartElemNode.AppendChild(supplierAddressPartsElem);
supplierAddressPartsCountryElemNode.AppendChild(AddressPartElemCountryKeyElem);
supplierAddressPartsCountryElemNode.AppendChild(AddressPartElemCountryValueElem);
//add all supplierelements to docelemnode
docElemNode.AppendChild(supplierElem);
}
return doc.OuterXml;
}
I am trying to read a row from my MongoDB with the following code
public static void MongoConnection()
{
var connectionString = "127.0.0.1";
var mongoClient = new MongoClient(connectionString);
var mongoServer = mongoClient.GetServer();
var databaseName = "PointToPoint";
var db = mongoServer.GetDatabase(databaseName);
var mongodb = db.GetCollection("OCS.MeterEntity");
BsonDocument documentRead = mongodb.FindOne(new QueryDocument {
{"_id", "4B414D000000011613CD" }
});
But the documentRead is always null and i know the specifik _id exists in the database. What am i doing wrong?
It does connect to the database and the right table.
Seems to be a calling convention:
new QueryDocument( "_id", new ObjectId("4B414D000000011613CD") )
but this should work as well:
new BSONDocument { { "_id", "4B414D000000011613CD" } }
I mannaged to figure it out :)
public static void MongoConnection()
{
var connectionString = "mongodb://localhost";
var mongoClient = new MongoClient(connectionString);
var mongoServer = mongoClient.GetServer();
var databaseName = "PointToPoint";
var db = mongoServer.GetDatabase(databaseName);
var mongodb = db.GetCollection<MongoDBModel>("OCS.MeterEntity");
var mongodbQuery = Query<MongoDBModel>.EQ(x => x._id, "4B414D000000011613CD");
var foundMongoDB = mongodb.FindOne(mongodbQuery);
}