public async Task <InvokeResult <List <DataStreamResult> > > ExecSQLAsync(string query, List <SQLParameter> filter)
{
try
{
var responseItems = new List <DataStreamResult>();
using (var cn = OpenConnection(_stream.DbName))
using (var cmd = new NpgsqlCommand())
{
cmd.Connection = cn;
cmd.CommandText = query.ToString();
foreach (var filterItem in filter)
{
cmd.Parameters.AddWithValue(filterItem.Name, filterItem.Value);
}
using (var rdr = await cmd.ExecuteReaderAsync())
{
while (rdr.Read())
{
var resultItem = new DataStreamResult();
for (var idx = 0; idx < rdr.FieldCount; ++idx)
{
resultItem.Add(rdr.GetColumnSchema()[idx].ColumnName, rdr[idx]);
}
responseItems.Add(resultItem);
}
}
return(InvokeResult <List <DataStreamResult> > .Create(responseItems));
}
}
catch (Exception ex)
{
_logger.AddException("PostgresqlConnector_ExecSQLAsync", ex, query.ToKVP("query"));
return(InvokeResult <List <DataStreamResult> > .FromException("PostgresqlConnector_ExecSQLAsync", ex));
}
}
public DataStreamResult ToDataStreamResult(DataStream stream)
{
var result = new DataStreamResult();
foreach (var item in Data)
{
result.Add(item.Key, item.Value);
}
switch (stream.DateStorageFormat.Value)
{
case DateStorageFormats.Epoch:
long epoch = Convert.ToInt64(Data[stream.TimestampFieldName]);
result.Timestamp = DateTimeOffset.FromUnixTimeSeconds(epoch).DateTime.ToJSONString();
break;
case DateStorageFormats.ISO8601:
result.Timestamp = Data[stream.TimestampFieldName].ToString();
break;
}
return(result);
}
public async Task <ListResponse <DataStreamResult> > GetTimeSeriesAnalyticsAsync(string query, Dictionary <string, object> filter, ListRequest request)
{
var sql = new StringBuilder(query);
sql.AppendLine();
sql.AppendLine($" from {_stream.DbSchema}.{_stream.DbTableName}");
sql.AppendLine($" where 1 = 1"); /* just used to establish a where clause we can use by appending "and x = y" */
if (!String.IsNullOrEmpty(request.NextRowKey))
{
sql.AppendLine($" and {_stream.TimestampFieldName} < @lastDateStamp");
}
if (!String.IsNullOrEmpty(request.StartDate))
{
sql.AppendLine($" and {_stream.TimestampFieldName} >= @startDateStamp");
}
if (!String.IsNullOrEmpty(request.EndDate))
{
sql.AppendLine($" and {_stream.TimestampFieldName} <= @endDateStamp");
}
foreach (var filterItem in filter)
{
sql.AppendLine($" and {filterItem.Key} = @parm{filterItem.Key}");
}
sql.AppendLine($" group by period");
sql.AppendLine($" order by period desc");
sql.AppendLine($" LIMIT {request.PageSize} OFFSET {request.PageSize * Math.Max(request.PageIndex - 1, 0)} ");
var responseItems = new List <DataStreamResult>();
using (var cn = OpenConnection(_stream.DbName))
using (var cmd = new NpgsqlCommand())
{
cmd.Connection = cn;
cmd.CommandText = sql.ToString();
Console.WriteLine(cmd.CommandText);
if (!String.IsNullOrEmpty(request.NextRowKey))
{
cmd.Parameters.AddWithValue($"@lastDateStamp", request.NextRowKey.ToDateTime());
}
if (!String.IsNullOrEmpty(request.StartDate))
{
cmd.Parameters.AddWithValue($"@startDateStamp", request.StartDate.ToDateTime());
}
if (!String.IsNullOrEmpty(request.EndDate))
{
cmd.Parameters.AddWithValue($"@endDateStamp", request.EndDate.ToDateTime());
}
foreach (var filterItem in filter)
{
cmd.Parameters.AddWithValue($"@parm{filterItem.Key}", filterItem.Value);
_logger.AddCustomEvent(LogLevel.Message, "ProcessStreamAnalyticsAsync", $"{filterItem.Key} - {filterItem.Value}");
}
cmd.CommandType = System.Data.CommandType.Text;
using (var rdr = await cmd.ExecuteReaderAsync())
{
while (rdr.Read())
{
var resultItem = new DataStreamResult();
for (var idx = 0; idx < rdr.FieldCount; ++idx)
{
resultItem.Add($"col{idx}", rdr[idx]);
}
responseItems.Add(resultItem);
}
}
}
var response = new Core.Models.UIMetaData.ListResponse <DataStreamResult>();
response.Model = responseItems;
response.PageSize = responseItems.Count;
response.PageIndex = request.PageIndex;
response.HasMoreRecords = responseItems.Count == request.PageSize && request.PageSize > 0;
if (response.HasMoreRecords)
{
response.NextRowKey = responseItems.Last().Timestamp;
}
return(response);
}
public async Task <ListResponse <DataStreamResult> > GetTimeSeriesAnalyticsAsync(TimeSeriesAnalyticsRequest request, ListRequest listRequest)
{
var fields = new List <string>();
var windowType = "";
switch (request.Window)
{
case Windows.Seconds: windowType = "seconds"; break;
case Windows.Minutes: windowType = "minutes"; break;
case Windows.Hours: windowType = "hours"; break;
case Windows.Days: windowType = "days"; break;
case Windows.Months: windowType = "months"; break;
case Windows.Years: windowType = "years"; break;
}
var sql = new StringBuilder($"select time_bucket('{request.WindowSize} {windowType}', {_stream.TimestampFieldName}) as period");
fields.Add("period");
sql.Append($", {_stream.DeviceIdFieldName}");
fields.Add(_stream.DeviceIdFieldName);
foreach (var method in request.Fields)
{
var operationType = "";
switch (method.Operation)
{
case Operations.Average: operationType = "avg"; break;
case Operations.Minimum: operationType = "min"; break;
case Operations.Maximum: operationType = "max"; break;
case Operations.Count: operationType = "count"; break;
case Operations.Sum: operationType = "sum"; break;
case Operations.Interpolate: operationType = "interpolate"; break;
}
if (String.IsNullOrEmpty(operationType))
{
sql.Append($", {method.Name}");
fields.Add(method.Name);
}
else
{
var fieldName = $"{operationType}_{method.Name}";
sql.Append($", {operationType}({method.Name}) as {fieldName}");
fields.Add(fieldName);
}
}
sql.AppendLine();
sql.AppendLine($" from {_stream.DbSchema}.{_stream.DbTableName}");
sql.AppendLine($" where 1 = 1"); /* just used to establish a where clause we can use by appending "and x = y" */
foreach (var filterItem in request.Filter)
{
sql.AppendLine($" and {filterItem.Key} = @parm{filterItem.Key}");
}
sql.AppendLine($" group by period, {_stream.DeviceIdFieldName}");
sql.AppendLine($" order by period desc");
sql.AppendLine($" LIMIT {listRequest.PageSize} OFFSET {listRequest.PageSize * Math.Max(listRequest.PageIndex - 1, 0)} ");
var responseItems = new List <DataStreamResult>();
using (var cn = OpenConnection(_stream.DbName))
using (var cmd = new NpgsqlCommand())
{
cmd.Connection = cn;
cmd.CommandText = sql.ToString();
Console.WriteLine(cmd.CommandText);
if (!String.IsNullOrEmpty(listRequest.NextRowKey))
{
cmd.Parameters.AddWithValue($"@lastDateStamp", listRequest.NextRowKey.ToDateTime());
}
if (!String.IsNullOrEmpty(listRequest.StartDate))
{
cmd.Parameters.AddWithValue($"@startDateStamp", listRequest.StartDate.ToDateTime());
}
if (!String.IsNullOrEmpty(listRequest.EndDate))
{
cmd.Parameters.AddWithValue($"@endDateStamp", listRequest.EndDate.ToDateTime());
}
foreach (var filterItem in request.Filter)
{
cmd.Parameters.AddWithValue($"@parm{filterItem.Key}", filterItem.Value);
}
cmd.CommandType = System.Data.CommandType.Text;
using (var rdr = await cmd.ExecuteReaderAsync())
{
while (rdr.Read())
{
var resultItem = new DataStreamResult();
for (var idx = 0; idx < rdr.FieldCount; ++idx)
{
resultItem.Add(fields[idx], rdr[idx]);
}
responseItems.Add(resultItem);
}
}
}
var response = new Core.Models.UIMetaData.ListResponse <DataStreamResult>();
response.Model = responseItems;
response.PageSize = responseItems.Count;
response.PageIndex = listRequest.PageIndex;
response.HasMoreRecords = responseItems.Count == listRequest.PageSize && listRequest.PageSize > 0;
if (response.HasMoreRecords)
{
response.NextRowKey = responseItems.Last().Timestamp;
}
return(response);
}
public async Task <ListResponse <DataStreamResult> > GetItemsAsync(Dictionary <string, object> filter, ListRequest request)
{
var sql = new StringBuilder("select ");
if (request.PageSize == 0)
{
request.PageSize = 50;
}
sql.Append($"{_stream.TimestampFieldName}");
sql.Append($", {_stream.DeviceIdFieldName}");
foreach (var fld in _stream.Fields)
{
switch (fld.FieldType.Value)
{
case DeviceAdmin.Models.ParameterTypes.GeoLocation:
sql.Append($", ST_AsText({fld.FieldName}) out_{fld.FieldName}");
break;
default:
sql.Append($", {fld.FieldName}");
break;
}
}
sql.AppendLine();
sql.AppendLine($" from {_stream.DbSchema}.{_stream.DbTableName}");
sql.AppendLine($" where 1 = 1"); /* just used to establish a where clause we can use by appending "and x = y" */
_logger.AddCustomEvent(LogLevel.Message, "GetItemsAsync", sql.ToString());
var responseItems = new List <DataStreamResult>();
using (var cn = OpenConnection(_stream.DbName))
using (var cmd = new NpgsqlCommand())
{
Console.WriteLine(cmd.CommandText);
if (!String.IsNullOrEmpty(request.NextRowKey))
{
sql.AppendLine($" and {_stream.TimestampFieldName} < @lastDateStamp");
cmd.Parameters.AddWithValue($"@lastDateStamp", request.NextRowKey.ToDateTime());
}
if (!String.IsNullOrEmpty(request.StartDate))
{
sql.AppendLine($" and {_stream.TimestampFieldName} >= @startDateStamp");
cmd.Parameters.AddWithValue($"@startDateStamp", request.StartDate.ToDateTime());
}
if (!String.IsNullOrEmpty(request.EndDate))
{
sql.AppendLine($" and {_stream.TimestampFieldName} <= @endDateStamp");
cmd.Parameters.AddWithValue($"@endDateStamp", request.EndDate.ToDateTime());
}
if (!String.IsNullOrEmpty(request.GroupBy))
{
sql.AppendLine($" and period = @groupBy");
cmd.Parameters.AddWithValue($"@groupBy", request.GroupBy);
}
foreach (var filterItem in filter)
{
sql.AppendLine($" and {filterItem.Key} = @parm{filterItem.Key}");
cmd.Parameters.AddWithValue($"@parm{filterItem.Key}", filterItem.Value);
_logger.AddCustomEvent(LogLevel.Message, "GetItemsAsync", $"{filterItem.Key} - {filterItem.Value}");
}
sql.AppendLine($" order by {_stream.TimestampFieldName} desc");
sql.AppendLine($" LIMIT {request.PageSize} OFFSET {request.PageSize * Math.Max(request.PageIndex - 1, 0)} ");
cmd.Connection = cn;
cmd.CommandText = sql.ToString();
cmd.CommandType = System.Data.CommandType.Text;
using (var rdr = await cmd.ExecuteReaderAsync())
{
while (rdr.Read())
{
var resultItem = new DataStreamResult();
var timeStamp = Convert.ToDateTime(rdr[_stream.TimestampFieldName]);
timeStamp = DateTime.SpecifyKind(timeStamp, DateTimeKind.Utc);
resultItem.Timestamp = timeStamp.ToJSONString();
resultItem.Add(_stream.TimestampFieldName, resultItem.Timestamp);
resultItem.Add(_stream.DeviceIdFieldName, rdr[_stream.DeviceIdFieldName]);
foreach (var fld in _stream.Fields)
{
switch (fld.FieldType.Value)
{
case DeviceAdmin.Models.ParameterTypes.GeoLocation:
var result = rdr[$"out_{fld.FieldName}"] as String;
if (!String.IsNullOrEmpty(result))
{
var reg = new Regex(@"^POINT\((?'lat'[\d\.\-]{2,14}) (?'lon'[\d\.\-]{2,14})\)$");
var regMatch = reg.Match(result);
if (regMatch.Success && regMatch.Groups.Count == 3)
{
var strLat = regMatch.Groups[1];
var strLon = regMatch.Groups[2];
if (double.TryParse(strLat.Value, out double lat) &&
double.TryParse(strLat.Value, out double lon))
{
resultItem.Add(fld.FieldName, $"{lat:0.0000000},{lon:0.0000000}");
}
}
}
if (!resultItem.Keys.Contains(fld.FieldName))
{
resultItem.Add(fld.FieldName, null);
}
break;
case DeviceAdmin.Models.ParameterTypes.DateTime:
{
var dtValue = rdr[fld.FieldName] as DateTime?;
if (dtValue.HasValue)
{
resultItem.Add(fld.FieldName, dtValue.Value.ToJSONString());
}
}
break;
default:
resultItem.Add(fld.FieldName, rdr[fld.FieldName]);
break;
}
}
responseItems.Add(resultItem);
}
}
}
var response = new Core.Models.UIMetaData.ListResponse <DataStreamResult>();
response.Model = responseItems;
response.PageSize = responseItems.Count;
response.PageIndex = request.PageIndex;
response.HasMoreRecords = responseItems.Count == request.PageSize;
if (response.HasMoreRecords)
{
response.NextRowKey = responseItems.Last().Timestamp;
}
return(response);
}
public async Task <LagoVista.Core.Models.UIMetaData.ListResponse <DataStreamResult> > GetItemsAsync(string deviceId, LagoVista.Core.Models.UIMetaData.ListRequest request)
{
request.PageIndex--;
request.PageIndex = Math.Max(0, request.PageIndex);
//TODO: Next chunk of code sux, likely much better way but will probably want to build a more robust filtering system at some point.
ISearchResponse <Dictionary <string, object> > result = null;
if (String.IsNullOrEmpty(request.StartDate) && String.IsNullOrEmpty(request.EndDate))
{
result = await _client.SearchAsync <Dictionary <string, object> >(src => src.From(0)
.Index(_stream.ElasticSearchIndexName)
//.Type(_stream.ElasticSearchTypeName)
.From(request.PageIndex *request.PageSize)
.Size(request.PageSize)
.Sort(srt => srt.Descending(new Field("sortOrder"))));
}
else if (String.IsNullOrEmpty(request.StartDate))
{
var endTicks = request.EndDate.ToDateTime().Ticks;
result = await _client.SearchAsync <Dictionary <string, object> >(src => src.From(0)
.Index(_stream.ElasticSearchIndexName)
//.Type(_stream.ElasticSearchTypeName)
.Query(qry =>
qry.Range(rng => rng
.Field("sortOrder")
.LessThanOrEquals(endTicks)
))
.From(request.PageIndex *request.PageSize)
.Size(request.PageSize)
.Sort(srt => srt.Descending(new Field("sortOrder"))));
}
else if (String.IsNullOrEmpty(request.EndDate))
{
var startTicks = request.StartDate.ToDateTime().Ticks;
result = await _client.SearchAsync <Dictionary <string, object> >(src => src.From(0)
.Index(_stream.ElasticSearchIndexName)
//.Type(_stream.ElasticSearchTypeName)
.Query(qry =>
qry.Range(rng => rng
.Field("sortOrder")
.GreaterThanOrEquals(startTicks)
))
.From(request.PageIndex *request.PageSize)
.Size(request.PageSize)
.Sort(srt => srt.Descending(new Field("sortOrder"))));
}
else
{
var startTicks = request.StartDate.ToDateTime().Ticks;
var endTicks = request.EndDate.ToDateTime().Ticks;
result = await _client.SearchAsync <Dictionary <string, object> >(src => src.From(0)
.Index(_stream.ElasticSearchIndexName)
//.Type(_stream.ElasticSearchTypeName)
.Query(qry =>
qry.Range(rng => rng
.Field("sortOrder")
.GreaterThanOrEquals(startTicks)
.LessThanOrEquals(endTicks)
))
.From(request.PageIndex *request.PageSize)
.Size(request.PageSize)
.Sort(srt => srt.Descending(new Field("sortOrder"))));
}
if (result.IsValid)
{
var records = new List <DataStreamResult>();
foreach (var record in result.Documents)
{
var streamResult = new DataStreamResult()
{
/* Newtonsoft assumes the value is date time for something that looks like a date, time this dual conversion gets our standard ISO8601 date string */
Timestamp = record[_stream.TimestampFieldName].ToString().ToDateTime().ToJSONString(),
};
foreach (var key in record.Keys)
{
streamResult.Add(key, record[key]);
}
records.Add(streamResult);
}
var response = Core.Models.UIMetaData.ListResponse <DataStreamResult> .Create(records);
response.PageIndex = request.PageIndex;
response.PageSize = records.Count;
response.HasMoreRecords = response.PageSize == request.PageSize;
return(response);
}
else
{
if (result.OriginalException != null)
{
return(ListResponse <DataStreamResult> .FromError(result.OriginalException.Message));
}
else
{
return(ListResponse <DataStreamResult> .FromError(result.DebugInformation));
}
}
}
public async Task <ListResponse <DataStreamResult> > GetItemsAsync(string deviceId, LagoVista.Core.Models.UIMetaData.ListRequest request)
{
var filter = TableQuery.GenerateFilterCondition(nameof(Models.DataStreamTSEntity.PartitionKey), QueryComparisons.Equal, deviceId);
var dateFilter = String.Empty;
/* FYI - less than and greater than are reversed because the data is inserted wiht row keys in descending order */
if (!String.IsNullOrEmpty(request.StartDate) && !String.IsNullOrEmpty(request.EndDate))
{
var startRowKey = request.StartDate.ToDateTime().ToInverseTicksRowKey();
var endRowKey = request.EndDate.ToDateTime().ToInverseTicksRowKey();
dateFilter = TableQuery.CombineFilters(
TableQuery.GenerateFilterCondition(nameof(Models.DataStreamTSEntity.RowKey), QueryComparisons.LessThanOrEqual, startRowKey.ToString()),
TableOperators.And,
TableQuery.GenerateFilterCondition(nameof(Models.DataStreamTSEntity.RowKey), QueryComparisons.GreaterThanOrEqual, endRowKey.ToString())
);
}
else if (String.IsNullOrEmpty(request.StartDate) && !String.IsNullOrEmpty(request.EndDate))
{
var endRowKey = request.EndDate.ToDateTime().ToInverseTicksRowKey();
dateFilter = TableQuery.GenerateFilterCondition(nameof(Models.DataStreamTSEntity.RowKey), QueryComparisons.GreaterThanOrEqual, endRowKey.ToString());
}
else if (String.IsNullOrEmpty(request.EndDate) && !String.IsNullOrEmpty(request.StartDate))
{
var startRowKey = request.StartDate.ToDateTime().ToInverseTicksRowKey();
dateFilter = TableQuery.GenerateFilterCondition(nameof(Models.DataStreamTSEntity.RowKey), QueryComparisons.LessThanOrEqual, startRowKey.ToString());
}
if (!String.IsNullOrEmpty(dateFilter))
{
filter = TableQuery.CombineFilters(filter, TableOperators.And, dateFilter);
}
var query = new TableQuery <DynamicTableEntity>().Where(filter).Take(request.PageSize);
var numberRetries = 5;
var retryCount = 0;
var completed = false;
while (retryCount++ < numberRetries && !completed)
{
try
{
TableQuerySegment <DynamicTableEntity> results;
if (!String.IsNullOrEmpty(request.NextPartitionKey) && !String.IsNullOrEmpty(request.NextRowKey))
{
var token = new TableContinuationToken()
{
NextPartitionKey = request.NextPartitionKey,
NextRowKey = request.NextRowKey
};
results = await _cloudTable.ExecuteQuerySegmentedAsync <DynamicTableEntity>(query, token);
}
else
{
results = await _cloudTable.ExecuteQuerySegmentedAsync <DynamicTableEntity>(query, new TableContinuationToken());
}
var listResponse = new ListResponse <DataStreamResult>
{
NextRowKey = results.ContinuationToken?.NextRowKey,
NextPartitionKey = results.ContinuationToken?.NextPartitionKey,
PageSize = results.Count(),
HasMoreRecords = results.ContinuationToken != null,
};
var resultSet = new List <DataStreamResult>();
foreach (var item in results)
{
var result = new DataStreamResult();
foreach (var property in item.Properties)
{
result.Add(property.Key, property.Value.PropertyAsObject);
}
switch (_stream.DateStorageFormat.Value)
{
case DateStorageFormats.Epoch:
long epoch = Convert.ToInt64(item.Properties[_stream.TimestampFieldName]);
result.Timestamp = DateTimeOffset.FromUnixTimeSeconds(epoch).DateTime.ToJSONString();
break;
case DateStorageFormats.ISO8601:
result.Timestamp = item.Properties[_stream.TimestampFieldName].StringValue.ToDateTime().ToJSONString();
break;
}
resultSet.Add(result);
}
listResponse.Model = resultSet;
return(listResponse);
}
catch (Exception ex)
{
if (retryCount == numberRetries)
{
_logger.AddException("AzureTableStorageConnector_GetItemsAsync", ex);
return(ListResponse <DataStreamResult> .FromError(ex.Message));
}
else
{
_logger.AddCustomEvent(LagoVista.Core.PlatformSupport.LogLevel.Warning, "AzureTableStorageConnector_GetItemsAsync", "", ex.Message.ToKVP("exceptionMessage"), ex.GetType().Name.ToKVP("exceptionType"), retryCount.ToString().ToKVP("retryCount"));
}
await Task.Delay(retryCount * 250);
}
finally
{
}
}
_logger.AddException("AzureTableStorageConnector_GetItemsAsync", new Exception("Unexpected end of method"));
return(ListResponse <DataStreamResult> .FromError("Unexpected end of method."));
}
public async Task <LagoVista.Core.Models.UIMetaData.ListResponse <DataStreamResult> > GetItemsAsync(string deviceId, LagoVista.Core.Models.UIMetaData.ListRequest request)
{
var sql = new StringBuilder("select ");
if (request.PageSize == 0)
{
request.PageSize = 50;
}
sql.Append($"[{_stream.TimestampFieldName}]");
foreach (var fld in _stream.Fields)
{
sql.Append($", [{fld.FieldName}]");
}
sql.AppendLine();
sql.AppendLine($" from [{_stream.DbTableName}]");
sql.AppendLine($" where [{_stream.DeviceIdFieldName}] = @deviceId");
if (!String.IsNullOrEmpty(request.NextRowKey))
{
sql.AppendLine($" and {_stream.TimestampFieldName} < @lastDateStamp");
}
if (!String.IsNullOrEmpty(request.StartDate))
{
sql.AppendLine($" and {_stream.TimestampFieldName} >= @startDateStamp");
}
if (!String.IsNullOrEmpty(request.EndDate))
{
sql.AppendLine($" and {_stream.TimestampFieldName} <= @endDateStamp");
}
sql.AppendLine($" order by [{_stream.TimestampFieldName}] desc");
sql.AppendLine(" OFFSET @PageSize * @PageIndex ROWS");
sql.AppendLine(" FETCH NEXT @PageSize ROWS ONLY ");
Console.WriteLine(sql.ToString());
var responseItems = new List <DataStreamResult>();
using (var cn = new System.Data.SqlClient.SqlConnection(_connectionString))
using (var cmd = new System.Data.SqlClient.SqlCommand(sql.ToString(), cn))
{
cmd.Parameters.AddWithValue("@deviceId", deviceId);
cmd.Parameters.AddWithValue("@PageSize", request.PageSize);
cmd.Parameters.AddWithValue("@PageIndex", Math.Max(request.PageIndex - 1, 0));
if (!String.IsNullOrEmpty(request.NextRowKey))
{
cmd.Parameters.AddWithValue($"@lastDateStamp", request.NextRowKey.ToDateTime());
}
if (!String.IsNullOrEmpty(request.StartDate))
{
cmd.Parameters.AddWithValue($"@startDateStamp", request.StartDate.ToDateTime());
}
if (!String.IsNullOrEmpty(request.EndDate))
{
cmd.Parameters.AddWithValue($"@endDateStamp", request.EndDate.ToDateTime());
}
cmd.CommandType = System.Data.CommandType.Text;
await cmd.Connection.OpenAsync();
using (var rdr = await cmd.ExecuteReaderAsync())
{
while (rdr.Read())
{
var resultItem = new DataStreamResult();
resultItem.Timestamp = Convert.ToDateTime(rdr[_stream.TimestampFieldName]).ToJSONString();
foreach (var fld in _stream.Fields)
{
try
{
resultItem.Add(fld.FieldName, rdr[fld.FieldName]);
}
catch (Exception)
{
Debugger.Break();
}
}
responseItems.Add(resultItem);
}
}
}
var response = new Core.Models.UIMetaData.ListResponse <DataStreamResult>();
response.Model = responseItems;
response.PageSize = responseItems.Count;
response.PageIndex = request.PageIndex;
response.HasMoreRecords = responseItems.Count == request.PageSize;
if (response.HasMoreRecords)
{
response.NextRowKey = responseItems.Last().Timestamp;
}
return(response);
}
