public virtual void OnSelecting(SearchDataSourceSelectingEventArgs args)
{
var handler = Events[_selecting] as EventHandler <SearchDataSourceSelectingEventArgs>;
if (handler != null)
{
handler(this, args);
}
}
protected override IEnumerable ExecuteSelect(DataSourceSelectArguments args)
{
args.AddSupportedCapabilities(DataSourceCapabilities.Page);
args.AddSupportedCapabilities(DataSourceCapabilities.RetrieveTotalRowCount);
args.RaiseUnsupportedCapabilitiesError(this);
var parameters = Owner.SelectParameters.GetValues(HttpContext.Current, Owner);
var filter = GetFilter(args, parameters);
var logicalNames = GetLogicalNames(args, parameters);
var pageSize = GetPageSize(args, parameters);
var pageNumber = GetPageNumber(args, parameters, pageSize);
var queryText = GetQueryText(args, parameters);
ContextLanguageInfo contextLanguage;
var multiLanguageEnabled = TryGetLanguageCode(out contextLanguage);
if (string.IsNullOrWhiteSpace(queryText) && string.IsNullOrWhiteSpace(filter))
{
args.TotalRowCount = 0;
return(new CrmEntitySearchResultPage(new List <ICrmEntitySearchResult>(), 0, pageNumber, pageSize));
}
var provider = SearchManager.GetProvider(Owner.SearchProvider);
var query = new CrmEntityQuery(queryText, pageNumber, pageSize, logicalNames, contextLanguage.ContextLanguage, multiLanguageEnabled, filter);
var selectingArgs = new SearchDataSourceSelectingEventArgs(provider, query);
Owner.OnSelecting(selectingArgs);
if (selectingArgs.Cancel)
{
args.TotalRowCount = 0;
return(new CrmEntitySearchResultPage(new List <ICrmEntitySearchResult>(), 0, pageNumber, pageSize));
}
try
{
using (var searcher = provider.GetIndexSearcher())
{
var results = searcher.Search(query);
args.TotalRowCount = results.ApproximateTotalHits;
Owner.OnSelected(new SearchDataSourceStatusEventArgs(provider, query, results));
return(results);
}
}
catch (Exception e)
{
ADXTrace.Instance.TraceError(TraceCategory.Application, e.ToString());
var selectedArgs = new SearchDataSourceStatusEventArgs(provider, query, new CrmEntitySearchResultPage(new List <ICrmEntitySearchResult>(), 0, pageNumber, pageSize))
{
Exception = e
};
Owner.OnSelected(selectedArgs);
if (!selectedArgs.ExceptionHandled)
{
throw;
}
args.TotalRowCount = 0;
return(new CrmEntitySearchResultPage(new List <ICrmEntitySearchResult>(), 0, pageNumber, pageSize));
}
}
