public PagedSearchResult <ISearchResult> SearchAhead(string query, SiteContext siteContext, PaginationOptions paginationOptions = null)
{
if (paginationOptions == null)
{
paginationOptions = new PaginationOptions {
PageNumber = 1, PageSize = 4
};
}
var terms = _searchTermProvider.GetTermsFromQuery(query).ToList();
// must provide some search terms
if (!terms.Any())
{
return(new PagedSearchResult <ISearchResult>(paginationOptions.PageNumber, paginationOptions.PageSize));
}
var predicate = PredicateBuilder.True <LuceneSearchResultItem>();
// change to AndAllAutocomplete for simple autocomplete (no search ahead)
predicate = predicate.AndAllContentOrBoostedContentOrAutocompleteTitle(terms);
using (var context = ContentSearchManager.GetIndex(SiteContext.Current.GetIndexName()).CreateSearchContext())
{
var queryable = context.GetQueryable <LuceneSearchResultItem>()
.Where(predicate)
.AddFilter(new DefaultFilter <LuceneSearchResultItem>(siteContext));
// execute query
return(_searchResultFactory.ToPagedSearchResult(queryable, paginationOptions));
}
}
private Expression <Func <T, bool> > Query <T>(Expression <Func <T, bool> > where, string value)
where T : LuceneSearchResultItem
{
if (string.IsNullOrWhiteSpace(value))
{
return(where);
}
var terms = _searchTermProvider.GetTermsFromQuery(value).ToList();
return(where.AndAllContentOrBoostedContent(terms));
}