protected override DriverResult Display(RelatedContentPart part, string displayType, dynamic shapeHelper)
{
// Put all your driver logic inside this method so that if your part is not being displayed no logic is run. Yay efficiency
return(ContentShape("Parts_RelatedContentPart",
() => {
var settings = part.TypePartDefinition.Settings.GetModel <RelatedContentPartSettings>();
var context = new RelatedContentContext {
ContentType = settings.ContentType
};
if (!String.IsNullOrWhiteSpace(settings.Fields))
{
context.FieldNames = settings.Fields.Split(',');
}
if (!String.IsNullOrWhiteSpace(settings.Index))
{
context.Index = settings.Index;
}
if (settings.NoOfItems != 0)
{
context.Count = settings.NoOfItems;
}
var related = _relatedSerive.GetRelatedItems(part.ContentItem.Id, context);
var content = _contentManger.GetMany <IContent>(related.Select(e => e.ContentItemId), VersionOptions.Published, QueryHints.Empty);
return shapeHelper.Parts_RelatedContentPart(RelatedContent: content);
}));
}
public IEnumerable <ISearchHit> GetRelatedItems(int id, RelatedContentContext context)
{
IndexReader reader = IndexReader.Open(GetDirectory(context.Index), true);
var indexSearcher = new IndexSearcher(reader);
var analyzer = _analyzerProvider.GetAnalyzer(context.Index);
var mlt = new MoreLikeThis(reader)
{
Boost = true, MinTermFreq = 1, Analyzer = analyzer, MinDocFreq = 1
};
if (context.FieldNames.Length > 0)
{
mlt.SetFieldNames(context.FieldNames);
}
var docid = GetDocumentId(id, indexSearcher);
Filter filter;
BooleanQuery query = (BooleanQuery)mlt.Like(docid);
if (!String.IsNullOrWhiteSpace(context.ContentType))
{
var contentTypeQuery = new TermQuery(new Term("type", context.ContentType));
query.Add(new BooleanClause(contentTypeQuery, Occur.MUST));
}
// exclude same doc
var exclude = new TermQuery(new Term("id", id.ToString()));
query.Add(new BooleanClause(exclude, Occur.MUST_NOT));
TopDocs simDocs = indexSearcher.Search(query, context.Count);
var results = simDocs.ScoreDocs
.Select(scoreDoc => new LuceneSearchHit(indexSearcher.Doc(scoreDoc.Doc), scoreDoc.Score));
return(results);
}
