/// <summary>
/// Remove text from the existing index.
/// </summary>
/// <param name="directoryIndexInfo">The directory infomation where the index files are located.</param>
/// <param name="names">An array of unique names for the text.</param>
public void RemoveText(DirectoryInfo directoryIndexInfo, string[] names)
{
Lucene.Net.Index.IndexWriter writer = null;
Lucene.Net.Store.Directory directory = null;
try
{
// If exists.
if (names != null && names.Length > 0)
{
// 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 query.
List <Query> queries = new List <Query>();
// For each name.
foreach (string name in names)
{
// Create the query.
BooleanQuery query = new BooleanQuery();
query.Add(new TermQuery(new Term("textname", name.ToLower())), BooleanClause.Occur.MUST);
// Add the query.
queries.Add(query);
}
// Delete the text.
writer.DeleteDocuments(queries.ToArray());
// Commit the index.
writer.Commit();
}
}
catch (Exception)
{
throw;
}
finally
{
if (writer != null)
{
writer.Dispose();
}
if (directory != null)
{
directory.Dispose();
}
}
}
/// <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();
}
}
}
/// <summary>
/// Remove documents from the existing index.
/// </summary>
/// <param name="directoryIndexInfo">The directory infomation where the index files are located.</param>
/// <param name="directoryInfo">The top level relative directory information where all the files that are to be removed are located.</param>
/// <param name="files">The array of all files that are to be removed relative to the directory info.</param>
/// <param name="documents">The supported documents search filter, used to indicate what files are to be removed.</param>
public void RemoveDocuments(DirectoryInfo directoryIndexInfo, DirectoryInfo directoryInfo, string[] files, SupportedDocumentExtension documents)
{
Lucene.Net.Index.IndexWriter writer = null;
Lucene.Net.Store.Directory directory = null;
try
{
if (documents != null)
{
// 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 directory filter.
DirectoryFilter filter = new DirectoryFilter();
Query[] queries = filter.RemoveDocuments(directoryInfo, files, documents);
writer.DeleteDocuments(queries);
// Commit the index.
writer.Commit();
}
}
catch (Exception)
{
throw;
}
finally
{
if (writer != null)
{
writer.Dispose();
}
if (directory != null)
{
directory.Dispose();
}
}
}
/// <summary>
/// Create a new index store within the specified directory.
/// </summary>
/// <param name="directoryIndexInfo">The directory infomation where the index files are to be placed.</param>
public void CreateIndex(DirectoryInfo directoryIndexInfo)
{
Lucene.Net.Index.IndexWriter writer = null;
Lucene.Net.Store.Directory directory = 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.CREATE);
// Create the new index.
writer = new IndexWriter(directory, indexConfig);
// Commit the index.
writer.Commit();
}
catch (Exception)
{
throw;
}
finally
{
if (writer != null)
{
writer.Dispose();
}
if (directory != null)
{
directory.Dispose();
}
}
}
/// <summary>
/// Add text to the existing index.
/// </summary>
/// <param name="directoryIndexInfo">The directory infomation where the index files are located.</param>
/// <param name="addTextData">The text data to add.</param>
public void AddText(DirectoryInfo directoryIndexInfo, AddTextData[] addTextData)
{
Lucene.Net.Index.IndexWriter writer = null;
Lucene.Net.Store.Directory directory = null;
long totalTextLength = 0;
long maxTextLengthBeforeCommit = 30000000L;
try
{
// If text exists.
if (addTextData != null && addTextData.Length > 0)
{
// 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);
// Add the text.
FieldType nameFieldType = new Lucene.Net.Documents.FieldType()
{
Indexed = true,
Tokenized = false,
Stored = true,
IndexOptions = FieldInfo.IndexOptions.DOCS_AND_FREQS_AND_POSITIONS,
};
// Add the text.
FieldType completeFieldType = new Lucene.Net.Documents.FieldType()
{
Indexed = true,
Tokenized = false,
Stored = true,
IndexOptions = FieldInfo.IndexOptions.DOCS_AND_FREQS_AND_POSITIONS,
};
// Add the text.
FieldType textFieldType = new Lucene.Net.Documents.FieldType()
{
Indexed = true,
Tokenized = false,
Stored = false,
IndexOptions = FieldInfo.IndexOptions.DOCS_AND_FREQS_AND_POSITIONS,
};
// For each text.
foreach (AddTextData data in addTextData)
{
// Should the data be stored.
completeFieldType.Stored = data.StoreText;
// Create the document.
Lucene.Net.Documents.Document document = new Lucene.Net.Documents.Document();
Lucene.Net.Documents.Field textName = new Field("textname", data.Name.ToLower(), nameFieldType);
Lucene.Net.Documents.Field textComplete = new Field("textcomplete", data.Text.ToLower(), completeFieldType);
document.Add(textName);
document.Add(textComplete);
// Split the white spaces from the text.
string[] words = data.Text.Words();
// If words exist.
if (words != null && words.Length > 0)
{
// Add the query for each word.
for (int j = 0; j < words.Length; j++)
{
// Format the word.
string word = words[j].ToLower().RemovePunctuationFromStartAndEnd();
// If a word exists.
if (!String.IsNullOrEmpty(word))
{
Lucene.Net.Documents.Field textData = new Field("text", word, textFieldType);
document.Add(textData);
}
}
}
// Add the document.
writer.AddDocument(document.Fields);
// Commit after a set number of documents.
totalTextLength += (long)data.Text.Length;
if (totalTextLength > maxTextLengthBeforeCommit)
{
// Commit the index.
writer.Commit();
totalTextLength = 0;
}
}
// Commit the index.
writer.Commit();
}
}
catch (Exception)
{
throw;
}
finally
{
if (writer != null)
{
writer.Dispose();
}
if (directory != null)
{
directory.Dispose();
}
}
}
/// <summary>
/// Add documents to 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="facetData">The complete facet information used to build the index information.</param>
public void AddMultiFacetDocuments(DirectoryInfo directoryIndexInfo, DirectoryInfo directoryFacetInfo, FacetData facetData)
{
Lucene.Net.Index.IndexWriter writer = null;
DirectoryTaxonomyWriter facetWriter = null;
Lucene.Net.Store.Directory directory = null;
Lucene.Net.Store.Directory directoryFacet = null;
try
{
if (facetData != null)
{
// 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 facet filter.
FacetFilter filter = new FacetFilter();
filter.AddDocuments(writer, facetWriter, facetData);
// Commit the index.
writer.Commit();
facetWriter.Commit();
}
}
catch (Exception)
{
throw;
}
finally
{
if (writer != null)
{
writer.Dispose();
}
if (facetWriter != null)
{
facetWriter.Dispose();
}
if (directory != null)
{
directory.Dispose();
}
if (directoryFacet != null)
{
directoryFacet.Dispose();
}
}
}