// add/update/clear search index data
public static void AddUpdateLuceneIndex(LuceneSearchModel sampleData)
{
AddUpdateLuceneIndex(new List<LuceneSearchModel> { sampleData });
}
private static void _addToLuceneIndex(LuceneSearchModel searchModel, IndexWriter writer)
{
// remove older index entry
var searchQuery = new TermQuery(new Term(AppConstants.LucId, searchModel.Id.ToString()));
writer.DeleteDocuments(searchQuery);
// add new index entry
var doc = new Document();
// add lucene fields mapped to db fields
// Posts
doc.Add(new Field(AppConstants.LucId, searchModel.Id.ToString(), Field.Store.YES, Field.Index.NOT_ANALYZED));
doc.Add(new Field(AppConstants.LucPostContent, searchModel.PostContent, Field.Store.YES, Field.Index.ANALYZED));
//Topics
if (!string.IsNullOrEmpty(searchModel.TopicName))
{
doc.Add(new Field(AppConstants.LucTopicName, searchModel.TopicName, Field.Store.YES, Field.Index.ANALYZED));
}
if (!string.IsNullOrEmpty(searchModel.TopicTags))
{
doc.Add(new Field(AppConstants.LucTopicTags, searchModel.TopicTags, Field.Store.YES, Field.Index.ANALYZED));
}
doc.Add(new Field(AppConstants.LucTopicUrl, searchModel.TopicUrl, Field.Store.YES, Field.Index.NOT_ANALYZED));
// Chnage the date so we can query in date order
var dateValue = DateTools.DateToString(searchModel.DateCreated, DateTools.Resolution.MILLISECOND);
doc.Add(new Field(AppConstants.LucDateCreated, dateValue, Field.Store.YES, Field.Index.NOT_ANALYZED));
doc.Add(new Field(AppConstants.LucTopicId, searchModel.TopicId.ToString(), Field.Store.YES, Field.Index.NOT_ANALYZED));
//User
doc.Add(new Field(AppConstants.LucUsername, searchModel.Username, Field.Store.YES, Field.Index.ANALYZED));
doc.Add(new Field(AppConstants.LucUserId, searchModel.UserId.ToString(), Field.Store.YES, Field.Index.NOT_ANALYZED));
// add entry to index
writer.AddDocument(doc);
}
/// <summary>
/// Add / Update an item in the index
/// </summary>
/// <param name="luceneSearchModel"></param>
public void AddUpdate(LuceneSearchModel luceneSearchModel)
{
GoLucene.AddUpdateLuceneIndex(luceneSearchModel);
}
/// <summary>
/// Map a post to the Lucene Model
/// </summary>
/// <param name="post"></param>
/// <returns></returns>
public LuceneSearchModel MapToModel(Post post)
{
var model = new LuceneSearchModel
{
Id = post.Id,
PostContent = post.PostContent,
DateCreated = post.DateCreated,
TopicId = post.Topic.Id,
TopicUrl = post.Topic.NiceUrl,
Username = post.User.UserName,
UserId = post.User.Id
};
if(post.IsTopicStarter)
{
model.TopicName = post.Topic.Name;
}
return model;
}
/// <summary>
/// Map a post to the Lucene Model
/// </summary>
/// <param name="post"></param>
/// <returns></returns>
public LuceneSearchModel MapToModel(Post post)
{
var model = new LuceneSearchModel
{
Id = post.Id,
PostContent = post.PostContent,
DateCreated = post.DateCreated,
TopicId = post.Topic.Id,
TopicUrl = post.Topic.NiceUrl,
TopicTags = post.Topic.Tags.Aggregate("", (current, tag) => current + " " + tag.Tag),
Username = post.User.UserName,
UserId = post.User.Id
};
if(post.IsTopicStarter)
{
model.TopicName = post.Topic.Name;
}
return model;
}
