public ISearchResponse <ScientificPaperDocument> Search(ScientificPaperSearchRequest request)
{
if (request is null)
{
throw new ArgumentNullException(nameof(request));
}
string searchStringQuery = GetQueryString(request);
if (searchStringQuery.Equals(string.Empty))
{
return(new SearchResponse <ScientificPaperDocument>());
}
return(Search <ScientificPaperDocument>(s => s
.Index(DEFAULT_INDEX)
.Query(q => q
.QueryString(qs => qs
.Query(searchStringQuery)))
.Highlight(h => h.PreTags(PRE_TAG_HIGHLIGHER).PostTags(POST_TAG_HIGHLIGHER).Encoder(HighlighterEncoder.Html)
.Fields(
f => f.Field(MAGAZINE_TITLE_FIELD),
f => f.Field(TITLE_FIELD),
f => f.Field(AUTHOR_FIRSTNAME_FIELD),
f => f.Field(AUTHOR_LASTNAME_FIELD),
f => f.Field(KEYWORDS_FIELD),
f => f.Field(SCIENTIFIC_FIELDS_FIELD),
f => f.Field(CONTENT_FIELD)))));
}
public string SearchScientificPaper(ScientificPaperSearchRequest request)
{
ISearchResponse <ScientificPaperDocument> response;
if (request.MoreLikeThisEnabled)
{
response = client.MoreLikeThis(request);
}
else
{
response = client.Search(request);
}
return(JsonConvert.SerializeObject(response.Hits.ToList(), Formatting.Indented));
}
private string GetQueryString(ScientificPaperSearchRequest request)
{
string magazineTitleQuery = CreateQuery(MAGAZINE_TITLE_FIELD, request.MagazineTitle, request.Operation);
string titleQuery = CreateQuery(TITLE_FIELD, request.Title, request.Operation);
string authorFirstnameQuery = CreateQuery(AUTHOR_FIRSTNAME_FIELD, request.AuthorFirstname, request.Operation);
string authorLastnameQuery = CreateQuery(AUTHOR_LASTNAME_FIELD, request.AuthorLastname, request.Operation);
string keywordsQuery = CreateQuery(KEYWORDS_FIELD, request.Keyword, request.Operation);
string scientificFieldsQuery = CreateQuery(SCIENTIFIC_FIELDS_FIELD, request.ScientificField, request.Operation);
string attachmentQuery = CreateQuery(CONTENT_FIELD, request.Content, request.Operation);
string searchStringQuery = string.Format("{0} {1} {2} {3} {4} {5} {6}",
magazineTitleQuery, titleQuery, authorFirstnameQuery, authorLastnameQuery, keywordsQuery, scientificFieldsQuery, attachmentQuery).Trim();
if (searchStringQuery.Length < 1)
{
return(string.Empty);
}
// searchString can't have operator at the end: remove last operator and return searchString
return(searchStringQuery.Substring(0, searchStringQuery.Length - request.Operation.Length).Trim());
}
public ISearchResponse <ScientificPaperDocument> MoreLikeThis(ScientificPaperSearchRequest request)
{
if (request is null)
{
throw new ArgumentNullException(nameof(request));
}
return(Search <ScientificPaperDocument>(s => s
.Index(DEFAULT_INDEX)
.Query(q => q
.MoreLikeThis(mlt => mlt
.Fields(f => f
.Field(MAGAZINE_TITLE_FIELD)
.Field(TITLE_FIELD)
.Field(AUTHOR_FIRSTNAME_FIELD)
.Field(AUTHOR_LASTNAME_FIELD)
.Field(KEYWORDS_FIELD)
.Field(SCIENTIFIC_FIELDS_FIELD)
.Field(CONTENT_FIELD))
.Like(l => l
.Text(request.MoreLikeThisQuery))
.MinDocumentFrequency(1)
.MinTermFrequency(1)))
.Highlight(h => h.PreTags(PRE_TAG_HIGHLIGHER).PostTags(POST_TAG_HIGHLIGHER).Encoder(HighlighterEncoder.Html)
.Fields(
f => f.Field(MAGAZINE_TITLE_FIELD)
.HighlightQuery(q => q
.Match(m => m
.Field(p => p.ScientificPaper.MagazineTitle)
.Query(request.MoreLikeThisQuery)
)
),
f => f.Field(TITLE_FIELD)
.HighlightQuery(q => q
.Match(m => m
.Field(p => p.ScientificPaper.Title)
.Query(request.MoreLikeThisQuery)
)
),
f => f.Field(AUTHOR_FIRSTNAME_FIELD)
.HighlightQuery(q => q
.Match(m => m
.Field(p => p.ScientificPaper.Authors.First().Firstname)
.Query(request.MoreLikeThisQuery)
)
),
f => f.Field(AUTHOR_LASTNAME_FIELD)
.HighlightQuery(q => q
.Match(m => m
.Field(p => p.ScientificPaper.Authors.First().Lastname)
.Query(request.MoreLikeThisQuery)
)
),
f => f.Field(KEYWORDS_FIELD)
.HighlightQuery(q => q
.Match(m => m
.Field(p => p.ScientificPaper.Keywords.First().Title)
.Query(request.MoreLikeThisQuery)
)
),
f => f.Field(SCIENTIFIC_FIELDS_FIELD)
.HighlightQuery(q => q
.Match(m => m
.Field(p => p.ScientificPaper.ScientificFields.First().Title)
.Query(request.MoreLikeThisQuery)
)
),
f => f.Field(CONTENT_FIELD)
.HighlightQuery(q => q
.Match(m => m
.Field(p => p.Attachment.Content)
.Query(request.MoreLikeThisQuery)))))));
}
