/// <summary>
/// Searches among all help topics by the given search term.
/// </summary>
/// <param name="term">Search term.</param>
/// <param name="offset">Zero-based offset of the matching record.</param>
/// <param name="amount">Amount of matching records to return.</param>
/// <returns>Matching help topics.</returns>
public HelpTopicSearchResultSet Search(string term, int offset = 0, int amount = 20)
{
HelpTopicSearchResultSet ret = new HelpTopicSearchResultSet();
using (var repo = base.OpenRespository())
ret = repo.Search(term, offset, amount);
return(ret);
}
/// <summary>
/// Searches among all help topics by the given search term.
/// </summary>
/// <param name="term">Search term.</param>
/// <param name="offset">Zero-based offset of the matching record.</param>
/// <param name="amount">Amount of matching records to return.</param>
/// <returns>Matching help topics.</returns>
public HelpTopicSearchResultSet Search(string term, int offset = 0, int amount = 20)
{
HelpTopicSearchResultSet ret = new HelpTopicSearchResultSet();
// Normalizing search terms.
string[] terms = (term ?? string.Empty)
.Split(new char[] { ' ' }, StringSplitOptions.RemoveEmptyEntries)
.Select(t => t.Trim().ToLowerInvariant()).Distinct().ToArray();
// Limiting the maximum number of terms.
if (terms.Length > 10)
{
terms = terms.Take(10).ToArray();
}
if (terms.Any())
{
// Space-separated term sequence for Raven.
string termSequence = string.Join(" ", terms);
// Getting results with highlights.
var results = base.Session.Query <HelpTopic>("HelpTopics/ByTitleAndBody")
.Search(topic => topic.Title, termSequence)
.Search(topic => topic.Body, termSequence)
.ToList()
.Where(topic => topic.ReferenceKey != "index")
.ToList()
.OrderBy(topic => topic.Score.Total);
// Materializing the count.
ret.Total = results.Count();
// Materializing results for the current page.
ret.Results = results.Skip(offset).Take(amount).ToList().Select(topic => new HelpTopicSearchResult()
{
TopicId = topic.Id,
TopicReferenceKey = topic.ReferenceKey,
Title = topic.Title,
Summary = HelpTopicRepository.SummarizeAndHighlightMatches(topic.Body, terms)
}).ToList();
}
return(ret);
}