I am trying to execute the following call ("api/test/sin=2129VAH99,8974922&sip=108124AG3") from the code below, but I cannot seem to get the call to work, as it keeps responding with 'no data' error.
public HttpResponseMessage Get([FromUri] Query query)
{
var data = db.database_Items.AsQueryable();
if (!String.IsNullOrEmpty(query.sip))
{
var ids = query.sip.Split(',').ToList();
data = data.Where(c => ids.Any(i => (c.SIP != null && c.SIP.Contains(i))));
}
if (!String.IsNullOrEmpty(query.sin))
{
var ids = query.sin.Split(',').ToList();
data = data.Where(c => ids.Any(i => (c.SINs != null && c.SINs.Contains(i))));
}
if (!data.Any())
{
return Request.CreateErrorResponse(HttpStatusCode.NotFound, message);
}
return Request.CreateResponse(HttpStatusCode.OK, data);
}
Any help/guidance would be very much appreciated. Many thanks.
Try to change your Url to :
api/test?sin=2129VAH99,8974922&sip=108124AG3
Related
How can I check if some value already exist in database I am doing MVC with Entity Framework and I want to check if element with composite key already exist in database application does someone has any suggestion i GOT the Json object but my done() method doesn't work?
I tried with JsonResult method from my controller
public JsonResult Check(int? id1, int? id2)
{
IQueryable<InspekcijskaKontrola> listaKontrola = db.InspekcijskeKontrole.Include(i => i.InspekcijskaTijela).Include(i => i.Proizvod).Select(i => i);
InspekcijskaKontrola inKontrola = listaKontrola.Where(i => i.InspekcijskoTijeloId == id1).Where(i => i.ProizvodId == id2).Select(i => i).Single();
if (inKontrola!=null)
{
return Json(inKontrola, JsonRequestBehavior.AllowGet);
}
return Json(new InspekcijskaKontrola { InspekcijskoTijeloId = -1, ProizvodId = -1 }, JsonRequestBehavior.AllowGet);
}
And I tried to rised modal dialog from my view with script
function prikazi() {
var zahtjev = $.getJSON("/InspekcijskeKontrole/Check?id1=" + $("#kombo3").val() + "&id2=" + $("#kombo4").val());
zahtjev.done(function (kontrola) {
if (kontrola.InspekcijskoTijeloId != -1 && kontrola.ProizvodId != -1) {
$("#p1").text("Inspekcijska kontrola za " + kontrola.ProizvodId + " je vec izvrsena");
$("#modalni1").modal({ backdrop: "static" });
}
});
}
Providing a bit of code would really help. However, right off the bat I could suggest you use something like this to search for a key(or more) from an object:
if(dbContext.Items.Any(anyObjectName=>anyObjectName.firstKey == ValueYouLookFor
&& anyObjectName.secondkey == AnotherValue))
{
//logic to apply if object exists
}
Below is my method of searching using predicate builder there is no error showing in visual studio but the problem is that the below code is not executing.
public JsonResult GetSearchedGraph(string searchItem, string itemTypeEnum)
{
var pre = PredicateBuilder.True<Graph>();
pre.And(m => m.isHidden == false && m.ItemType!="FOLDER");
if (!String.IsNullOrEmpty(searchItem))
{
pre.And(m => m.GraphItemTitle.ToUpper().Contains(searchItem.ToUpper()));
}
if (!String.IsNullOrEmpty(itemTypeEnum))
{
pre.And(m => m.ItemType == itemTypeEnum);
}
var searchGraph = from m in db.Graphs.AsQueryable() select m;
searchGraph = db.Graphs.Where(pre);
return Json(searchGraph.ToList(), JsonRequestBehavior.AllowGet);
}
I am not getting any search result by using this method what it is wrong with this code?
well, you just have to do correct assignments.
because pre.And() doesn't impact pre
var pre = PredicateBuilder.True<Graph>();
//assign result of pre.And(xxx) to pre
pre = pre.And(m => m.isHidden == false && m.ItemType!="FOLDER");
if (!String.IsNullOrEmpty(searchItem))
{
//same
pre = pre.And(m => m.GraphItemTitle.ToUpper().Contains(searchItem.ToUpper()));
}
if (!String.IsNullOrEmpty(itemTypeEnum))
{
//same
pre = pre.And(m => m.ItemType == itemTypeEnum);
}
I am having issues with my application. I have a db table for a print queue. When I read from that table in a loop, once I add that record to the view model, I then want to delete it from the database...this would be the most efficient way to do it, but EF barks:
An entity object cannot be referenced by multiple instances of IEntityChangeTracker.
I've tried using multiple contexts... but that didn't seem to work either. I've seen articles like Rick Strahl's, but frankly it was above my level of understanding, and not exactly sure if it helps my issue here and seemed quite an in depth solution for something as simple as this.
Is there a simple way to accomplish what I am trying to achieve here?
Here is my code:
public List<InventoryContainerLabelViewModel> CreateLabelsViewModel(int intFacilityId)
{
var printqRep = new Repository<InventoryContainerPrintQueue>(new InventoryMgmtContext());
var printqRepDelete = new Repository<InventoryContainerPrintQueue>(new InventoryMgmtContext());
IQueryable<InventoryContainerPrintQueue> labels =
printqRep.SearchFor(x => x.FacilityId == intFacilityId);
List<InventoryContainerLabelViewModel> labelsViewModel = new List<InventoryContainerLabelViewModel>();
if (labels.Count() > 0)
{
//Get printq record
foreach (InventoryContainerPrintQueue label in labels)
{
IEnumerable<InventoryContainerDetail> icDtls =
label.InventoryContainerHeader.InventoryContainerDetails;
//Get print details
foreach (InventoryContainerDetail icDtl in icDtls)
{
labelsViewModel.Add(new InventoryContainerLabelViewModel()
{
...
populate view model here
}
);//Add label to view model
} //for each IC detail
//Delete the printq record
printqRepDelete.Delete(label); <======== Error Here
} //foreach label loop
}//label count > 0
return labelsViewModel.ToList();
}
In the end, I added a column to the printq table for status, then in the the loop updated it to processed, then called a separate method to delete it.
public List<InventoryContainerLabelViewModel> CreateLabelsViewModel(int intFacilityId)
{
InventoryMgmtContext dbContext = new InventoryMgmtContext();
var printqRep = new Repository<InventoryContainerPrintQueue>(dbContext);
IEnumerable<InventoryContainerPrintQueue> unprintedPrtqRecs =
printqRep.SearchFor(x => x.FacilityId == intFacilityId && x.Printed == false);
List<InventoryContainerLabelViewModel> labelsViewModel = new List<InventoryContainerLabelViewModel>();
if (unprintedPrtqRecs.Count() > 0)
{
//Get printq record
foreach (InventoryContainerPrintQueue unprintedPrtqRec in unprintedPrtqRecs)
{
IEnumerable<InventoryContainerDetail> icDtls =
unprintedPrtqRec.InventoryContainerHeader.InventoryContainerDetails;
//Get container details to print
foreach (InventoryContainerDetail icDtl in icDtls)
{
labelsViewModel.Add(new InventoryContainerLabelViewModel()
{
...
}
);//Get IC details and create view model
} //for each IC detail
unprintedPrtqRec.Printed = true;
printqRep.Update(unprintedPrtqRec, unprintedPrtqRec, false);
} //foreach label loop
//Commit updated to Printed status to db
dbContext.SaveChanges();
}//label count > 0
return labelsViewModel;
}
public ActionConfirmation<int> DeletePrintQRecs(int intFacilityId)
{
InventoryMgmtContext dbContext = new InventoryMgmtContext();
var printqRep = new Repository<InventoryContainerPrintQueue>(dbContext);
IEnumerable<InventoryContainerPrintQueue> printedPrtqRecs =
printqRep.SearchFor(x => x.FacilityId == intFacilityId && x.Printed == true);
foreach (InventoryContainerPrintQueue printedPrtqRec in printedPrtqRecs)
{
//Delete the printq record
printqRep.Delete(printedPrtqRec, false);
}
//Save Changes on all deletes
ActionConfirmation<int> result;
try
{
dbContext.SaveChanges();
result = ActionConfirmation<int>.CreateSuccessConfirmation(
"All Label Print Q records deleted successfully.",
1);
}
catch (Exception ex)
{
result = ActionConfirmation<int>.CreateFailureConfirmation(
string.Format("An error occured attempting to {0}. The error was: {2}.",
"delete Label Print Q records",
ex.Message),
1
);
}
return result;
}
I have 3 joined tables; ValidationRun has many Result which has many Error
The following code succeeds in saving to the Result and Error tables but not the ValidationRun.
Can you see the problem please?
private void WriteResultsToDB(SqlDataReader dr, XMLValidator validator)
{
using (var context = new ValidationResultsEntities())
{
var run = new ValidationRun { DateTime = DateTime.Now, XSDPath = this.txtXsd.Text };
//loop through table containing the processed XML
while (dr.Read())
{
var result = new Result
{
AddedDateTime = (DateTime)dr["Added"],
CustomerAcc = (string)dr["CustomerAcc"],
CustomerRef = (string)dr["CustomerRef"]
};
if (this.rdoRequest.Checked)
{
result.XMLMsg = (string)dr["RequestMSG"];
}
else
{
result.XMLMsg = (string)dr["ReplyMSG"];
}
if (validator.Validate(result.XMLMsg))
{
foreach (string error in validator.Errors)
{
result.Errors.Add(new Error { ErrorDescription = error });
}
}
else
{
//validator caught an error
result.Errors.Add(new Error { ErrorDescription = "XML could not be parsed" });
}
if (result.Errors.Count == 0) result.ValidFile = true; else result.ValidFile = false;
context.AddToResults(result);
context.SaveChanges();
}
}
You don't appear to be adding the run to any part of the context. If it were referenced by the result you are adding, perhaps, the change tracker would know it was supposed to be saved, but as it is written it is just some orphaned object that doesn't get attached anywhere.
I am reading Sharepoint list data (>20000 entries) using Odata RESTful service as detailed here -http://blogs.msdn.com/b/ericwhite/archive/2010/12/09/getting-started-using-the-odata-rest-api-to-query-a-sharepoint-list.aspx
I am able to read data but I get only the first 1000 records. I also checked that List View Throttling is set to 5000 on sharepoint server. Kindly advise.
Update:
#Turker: Your answer is spot on!! Thank you very much. I was able to get the first 2000 records in first iteration. However, I am getting the same records in each iteration of while loop. My code is as follows-
...initial code...
int skipCount =0;
while (((QueryOperationResponse)query).GetContinuation() != null)
{
//query for the next partial set of customers
query = dc.Execute<CATrackingItem>(
((QueryOperationResponse)query).GetContinuation().NextLinkUri
);
//Add the next set of customers to the full list
caList.AddRange(query.ToList());
var results = from d in caList.Skip(skipCount)
select new
{
Actionable = Actionable,
}; Created = d.Created,
foreach (var res in results)
{
structListColumns.Actionable = res.Actionable;
structListColumns.Created= res.Created;
}
skipCount = caList.Count;
}//Close of while loop
Do you see a <link rel="next"> element at the end of the feed?
For example, if you look at
http://services.odata.org/Northwind/Northwind.svc/Customers/
you will see
<link rel="next" href="http://services.odata.org/Northwind/Northwind.svc/Customers/?$skiptoken='ERNSH'" />
at the end of the feed which means the service is implementing server side paging and you need to send the
http://services.odata.org/Northwind/Northwind.svc/Customers/?$skiptoken='ERNSH'
query to get the next set of results.
I don't see anything particularly wrong with your code. You can try to dump the URLs beign requested (either from the code, or using something like fiddler) to see if the client really sends the same queries (and thus getting same responses).
In any case, here is a sample code which does work (using the sample service):
DataServiceContext ctx = new DataServiceContext(new Uri("http://services.odata.org/Northwind/Northwind.svc"));
QueryOperationResponse<Customer> response = (QueryOperationResponse<Customer>)ctx.CreateQuery<Customer>("Customers").Execute();
do
{
foreach (Customer c in response)
{
Console.WriteLine(c.CustomerID);
}
DataServiceQueryContinuation<Customer> continuation = response.GetContinuation();
if (continuation != null)
{
response = ctx.Execute(continuation);
}
else
{
response = null;
}
} while (response != null);
I had the same problem, and wanted it to be a generic solution.
So I've extended DataServiceContext with a GetAlltems methode.
public static List<T> GetAlltems<T>(this DataServiceContext context)
{
return context.GetAlltems<T>(null);
}
public static List<T> GetAlltems<T>(this DataServiceContext context, IQueryable<T> queryable)
{
List<T> allItems = new List<T>();
DataServiceQueryContinuation<T> token = null;
EntitySetAttribute attr = (EntitySetAttribute)typeof(T).GetCustomAttributes(typeof(EntitySetAttribute), false).First();
// Execute the query for all customers and get the response object.
DataServiceQuery<T> query = null;
if (queryable == null)
{
query = context.CreateQuery<T>(attr.EntitySet);
}
else
{
query = (DataServiceQuery<T>) queryable;
}
QueryOperationResponse<T> response = query.Execute() as QueryOperationResponse<T>;
// With a paged response from the service, use a do...while loop
// to enumerate the results before getting the next link.
do
{
// If nextLink is not null, then there is a new page to load.
if (token != null)
{
// Load the new page from the next link URI.
response = context.Execute<T>(token);
}
allItems.AddRange(response);
}
// Get the next link, and continue while there is a next link.
while ((token = response.GetContinuation()) != null);
return allItems;
}