public Result <T> Search(N2.Persistence.Search.Query query)
{
if (!query.IsValid())
{
logger.Warn("Invalid query");
return(Result <T> .Empty);
}
var luceneQuery = query.ToLuceneQuery();
logger.Warn("Prepared lucene query " + luceneQuery);
var q = accessor.GetQueryParser().Parse(luceneQuery);
var s = accessor.GetSearcher();
TopDocs hits;
if (string.IsNullOrEmpty(query.SortField))
{
hits = s.Search(q, query.SkipHits + query.TakeHits);
}
else
{
hits = s.Search(
query: q,
filter: null,
n: query.SkipHits + query.TakeHits,
sort: new Sort(
query.SortFields.Select(
field => new SortField(field.SortField, GetSortFieldType(field.SortField), field.SortDescending)).ToArray()));
}
return(CreateResults(query, s, hits));
}
protected virtual Lucene.Net.Search.Query CreateQuery(N2.Persistence.Search.Query query)
{
var q = "";
if (!string.IsNullOrEmpty(query.Text))
{
q = query.OnlyPages.HasValue
? string.Format("+(Title:({0})^4 Text:({0}) PartsText:({0}))", query.Text)
: string.Format("+(Title:({0})^4 Text:({0}))", query.Text);
}
if (query.Ancestor != null)
{
q += string.Format(" +Trail:{0}*", Utility.GetTrail(query.Ancestor));
}
if (query.OnlyPages.HasValue)
{
q += string.Format(" +IsPage:{0}", query.OnlyPages.Value.ToString().ToLower());
}
if (query.Roles != null)
{
q += string.Format(" +Roles:(Everyone {0})", string.Join(" ", query.Roles.ToArray()));
}
if (query.Types != null)
{
q += string.Format(" +Types:({0})", string.Join(" ", query.Types.Select(t => t.Name).ToArray()));
}
if (query.LanguageCode != null)
{
q += string.Format(" +Language:({0})", query.LanguageCode);
}
if (query.Exclution != null)
{
q += string.Format(" -({0})", CreateQuery(query.Exclution));
}
if (query.Intersection != null)
{
q = string.Format("+({0}) +({1})", q, CreateQuery(query.Intersection));
}
if (query.Union != null)
{
q = string.Format("({0}) ({1})", q, CreateQuery(query.Union));
}
if (query.Details.Count > 0)
{
foreach (var kvp in query.Details)
{
if (LuceneIndexer.Properties.All.Contains(kvp.Key))
{
q += string.Format(" +{0}:({1})", kvp.Key, kvp.Value);
}
else
{
q += string.Format(" +Detail.{0}:({1})", kvp.Key, kvp.Value);
}
}
}
logger.Debug("CreateQuery: " + q);
return(accessor.GetQueryParser().Parse(q));
}