/// <summary>
/// Add content to be indexed.
/// </summary>
/// <param name="searchContent"></param>
public void AddContent(SearchContent searchContent)
{
if (_indexWriter == null)
{
InitIndexWriter();
}
_indexWriter.AddDocument(BuildDocumentFromSearchContent(searchContent));
}
/// <summary>
/// Update existing content in the search index.
/// </summary>
/// <param name="searchContent"></param>
public void UpdateContent(SearchContent searchContent)
{
if (_rebuildIndex)
{
throw new InvalidOperationException("Cannot update documents when rebuilding the index.");
}
else
{
// First delete the old content
DeleteContent(searchContent);
// Now add the content again
AddContent(searchContent);
}
}
/// <summary>
/// Delete existing content from the search index.
/// </summary>
/// <param name="searchContent"></param>
public void DeleteContent(SearchContent searchContent)
{
if (_rebuildIndex)
{
throw new InvalidOperationException("Cannot delete documents when rebuilding the index.");
}
else
{
_indexWriter.Close();
_indexWriter = null;
// The path uniquely identifies a document in the index.
Term term = new Term("path", searchContent.Path);
IndexReader rdr = IndexReader.Open(_indexDirectory);
rdr.Delete(term);
rdr.Close();
}
}
private Document BuildDocumentFromSearchContent(SearchContent searchContent)
{
Document doc = new Document();
doc.Add(Field.Text("title", searchContent.Title));
doc.Add(Field.Text("summary", searchContent.Summary));
doc.Add(Field.UnStored("contents", searchContent.Contents));
doc.Add(Field.Text("author", searchContent.Author));
doc.Add(Field.Keyword("moduletype", searchContent.ModuleType));
doc.Add(Field.Keyword("path", searchContent.Path));
doc.Add(Field.Keyword("category", searchContent.Category));
doc.Add(Field.Keyword("site", searchContent.Site));
doc.Add(Field.Keyword("datecreated", searchContent.DateCreated.ToString("u")));
doc.Add(Field.Keyword("datemodified", searchContent.DateModified.ToString("u")));
doc.Add(Field.UnIndexed("sectionid", searchContent.SectionId.ToString()));
return(doc);
}