private static void HandleException(HttpContext context, string exceptionMessage)
{
// Construct query result object for serialization.
QueryResultObject queryResultObject = new QueryResultObject
{
HasError = true,
ErrorMessage = exceptionMessage
};
string returnedValue = serializer.Serialize(queryResultObject);
context.Response.Write(returnedValue);
}
/// <summary>
/// Execute query for specified dynamic page by object id.
/// </summary>
/// <param name="dynamicPageService">dynamic page service</param>
/// <param name="start">start offset of returned results</param>
/// <param name="limit">total count of returned results</param>
/// <param name="sortField">sorting field name</param>
/// <param name="sortDirection">sorting field direction</param>
/// <param name="errorMessage">error messages response to the client.</param>
/// <returns>returns json-serialized string from <see cref="QueryResultObject"/></returns>
private static string ExecuteQuery(IDynamicPage dynamicPageService, int start, int limit, string sortField, string sortDirection, string errorMessage)
{
IEnumerable convertedQueryResults = null;
int totalRecordCount = 0;
string returnedErrorMessage = errorMessage;
if (string.IsNullOrEmpty(returnedErrorMessage))
{
try
{
QueryParameter queryParameter = QueryParameter.CreateQueryParameter(dynamicPageService, HttpContext.Current.Request.QueryString, start, limit, sortField, sortDirection);
// Execute query.
QueryResults queryResults = dynamicPageService.Query(queryParameter);
convertedQueryResults = ConvertQueryResults(dynamicPageService, queryResults.Results);
totalRecordCount = queryResults.RecordCount;
}
catch (ValidationException exp)
{
returnedErrorMessage = exp.Message;
}
catch (Exception exp)
{
returnedErrorMessage = Resources.DP_UnknownErrorDetail;
Logger.Instance(typeof(DynamicPageDataServiceHandler)).Error(exp);
}
}
// Construct query result object for serialization.
QueryResultObject queryResultObject = new QueryResultObject
{
Records = convertedQueryResults,
TotalRecordCount = totalRecordCount,
Start = start,
Limit = limit,
HasError = !string.IsNullOrEmpty(returnedErrorMessage),
ErrorMessage = returnedErrorMessage
};
return serializer.Serialize(queryResultObject);
}