public List <ResultData> Search(MultiFieldSearchViewModel mfsViewModel)
{
var results = new List <ResultData>();
var requiredHighlights = new List <string>();
var booleanQuery = new BooleanQuery();
IndexerType type = AnalyzerService.GetIndexerType(mfsViewModel.Language);
InformationRetriever informationRetriever = new InformationRetriever(type, RAW_DIR_PATH, INDEX_DIR_PATH);
QueryType queryType = (QueryType)Enum.Parse(typeof(QueryType), mfsViewModel.QueryType);
QueryOperator queryOperator = (QueryOperator)Enum.Parse(typeof(QueryOperator), mfsViewModel.QueryOperator);
Occur occur = queryOperator.Equals(QueryOperator.AND)
? Occur.MUST
: Occur.SHOULD;
try
{
if (!string.IsNullOrEmpty(mfsViewModel.Title))
{
requiredHighlights.Add("Title");
booleanQuery.Add(QueryBuilder.BuildQuery(type, queryType, "Title", mfsViewModel.Title.Trim()), occur);
}
if (!string.IsNullOrEmpty(mfsViewModel.Author))
{
requiredHighlights.Add("Author");
booleanQuery.Add(QueryBuilder.BuildQuery(type, queryType, "Author", mfsViewModel.Author.Trim()), occur);
}
if (!string.IsNullOrEmpty(mfsViewModel.Keywords))
{
requiredHighlights.Add("Keyword");
List <Query> queries = BuildQueriesForKeywords(type, queryType, occur, mfsViewModel.Keywords);
queries.ForEach(x => booleanQuery.Add(x, occur));
}
if (!string.IsNullOrEmpty(mfsViewModel.Content))
{
requiredHighlights.Add("Content");
booleanQuery.Add(QueryBuilder.BuildQuery(type, queryType, "Content", mfsViewModel.Content.Trim()), occur);
}
if (!string.IsNullOrEmpty(mfsViewModel.Language))
{
requiredHighlights.Add("Language");
booleanQuery.Add(QueryBuilder.BuildQuery(type, queryType, "Language", mfsViewModel.Language.Trim()), occur);
}
results = informationRetriever.RetrieveEBooks(type, booleanQuery, requiredHighlights, Sort.INDEXORDER);
}
catch (Exception e)
{
results = null;
}
return(results);
}