public HttpResponseMessage Respond(ApiController apiController, string sp, IDictionary<string, object> parameters,
MediaTypeHeaderValue negotiatedMediaType, Encoding negotiatedEncoding)
{
HttpResponseMessage csvResponse = apiController.Request.CreateResponse();
IDictionary<string, string> queryStrings = apiController.Request.GetQueryStringDictionary();
int[] resultSetChoices = new int[] { GetQueryResultSetIndex(queryStrings, DbWebApiOptions.QueryStringContract.ResultSetParameterName) };
csvResponse.Content = new PushStreamContent((stream, httpContent, transportContext) =>
{
StreamWriter textWriter = (negotiatedEncoding == null) ? new StreamWriter(stream) : new StreamWriter(stream, negotiatedEncoding);
using (DalCenter dbContext = new DalCenter(queryStrings))
{
CsvExporter csvExporter = new CsvExporter(textWriter);
dbContext.ExecuteDbApi(sp, parameters, null,
readHeader =>
{
string[] headers = new string[readHeader.VisibleFieldCount];
for (int i = 0; i < headers.Length; i++)
headers[i] = dbContext.ResolvePropertyName(readHeader.GetName(i));
csvExporter.WriteHeader(headers);
},
readRow =>
{
object[] values = new object[readRow.VisibleFieldCount];
readRow.GetColumnValues(values);
csvExporter.WriteRow(values);
},
null, null, resultSetChoices);
textWriter.Flush();
}
stream.Close();
}, negotiatedMediaType ?? _DefaultMediaType);
csvResponse.Content.Headers.ContentDisposition = new ContentDispositionHeaderValue("attachment") { FileName = queryStrings.GetQueryFileName(DbWebApiOptions.QueryStringContract.FileNameParameterName, FormatShortName) };
return csvResponse;
}
public static int DetectSpChanges(int elapsedMinutes)
{
int cntExpired = -1;
string detectDdlChangesProc = ConfigHelper.DetectDdlChangesProc;
if (string.IsNullOrEmpty(detectDdlChangesProc) || elapsedMinutes < 1)
SwitchDerivedParametersCache(false);
else
{
SwitchDerivedParametersCache(true);
using (DalCenter dbContext = new DalCenter())
{
cntExpired = dbContext.InvalidateAlteredSpFromCache(detectDdlChangesProc, TimeSpan.FromMinutes(elapsedMinutes));
}
LastDetectSpChangesTime = DateTime.Now;
}
return cntExpired;
}