Exemplo n.º 1
0
        /// <summary>
        /// Remove facet documents from the existing index.
        /// </summary>
        /// <param name="directoryIndexInfo">The directory infomation where the index files are located.</param>
        /// <param name="directoryFacetInfo">The directory infomation where the facet files are to be placed.</param>
        /// <param name="textNames">The array of names for text data.</param>
        /// <param name="filePaths">The array of full paths (without root 'C:\'. e.g. 'temp/http/index.html') for file documents.</param>
        public void RemoveMultiFacetDocuments(DirectoryInfo directoryIndexInfo, DirectoryInfo directoryFacetInfo, string[] textNames, string[] filePaths)
        {
            Lucene.Net.Index.IndexWriter writer      = null;
            DirectoryTaxonomyWriter      facetWriter = null;

            Lucene.Net.Store.Directory directory      = null;
            Lucene.Net.Store.Directory directoryFacet = null;

            try
            {
                // Create the analyzer.
                SimpleAnalyzer   simpleAnalyzer   = new Analyzer.SimpleAnalyzer();
                StandardAnalyzer standardAnalyzer = new Analyzer.StandardAnalyzer(simpleAnalyzer);

                // Create the index writer.
                directory = FSDirectory.Open(directoryIndexInfo);
                IndexWriterConfig indexConfig = new IndexWriterConfig(Lucene.Net.Util.LuceneVersion.LUCENE_48, standardAnalyzer);
                indexConfig.SetOpenMode(IndexWriterConfig.OpenMode_e.APPEND);

                // Open existing or create new.
                writer = new IndexWriter(directory, indexConfig);

                // Create the facet writer.
                directoryFacet = FSDirectory.Open(directoryFacetInfo);
                facetWriter    = new DirectoryTaxonomyWriter(directoryFacet, IndexWriterConfig.OpenMode_e.APPEND);

                // Create the delet query.
                FacetFilter filter  = new FacetFilter();
                Query[]     queries = filter.RemoveDocuments(textNames, filePaths);
                writer.DeleteDocuments(queries);

                // Commit the index.
                writer.Commit();
                facetWriter.Commit();
            }
            catch (Exception)
            {
                throw;
            }
            finally
            {
                if (writer != null)
                {
                    writer.Dispose();
                }

                if (directory != null)
                {
                    directory.Dispose();
                }
            }
        }