public void Update(RecordInfo record)
{
if (_FSDirectory == null)
{
_FSDirectory = FSDirectory.Open(new DirectoryInfo(_IndexDir));
}
if (_IndexWriter == null)
{
Analyzer analyzer = new JiebaAnalyzer();
_IndexWriter = new IndexWriter(_FSDirectory, analyzer, IndexWriter.MaxFieldLength.UNLIMITED);
}
lock (_IndexDir)
{
BooleanQuery query = new BooleanQuery()
{
{ new TermQuery(new Term("ModuleType", record.ModuleType)), Occur.MUST },
{ new TermQuery(new Term("TableName", record.TableName)), Occur.MUST },
{ new TermQuery(new Term("RowId", record.RowId.ToString())), Occur.MUST }
};
_IndexWriter.DeleteDocuments(query);
Document document = AnalyzerDocument(record);
_IndexWriter.AddDocument(document);
_IndexWriter.Commit();
_IndexWriter.Optimize();
_IndexWriter.Dispose();
_FSDirectory.Dispose();
}
}
public void Delete(string moduleType, string tableName, string rowID)
{
if (_FSDirectory == null)
{
_FSDirectory = FSDirectory.Open(new DirectoryInfo(_IndexDir));
}
if (_IndexWriter == null)
{
Analyzer analyzer = new JiebaAnalyzer();
_IndexWriter = new IndexWriter(_FSDirectory, analyzer, IndexWriter.MaxFieldLength.UNLIMITED);
}
lock (_IndexDir)
{
BooleanQuery query = new BooleanQuery()
{
{ new TermQuery(new Term("ModuleType", moduleType)), Occur.MUST },
{ new TermQuery(new Term("TableName", tableName)), Occur.MUST },
{ new TermQuery(new Term("RowId", rowID)), Occur.MUST }
};
_IndexWriter.DeleteDocuments(query);
_IndexWriter.Commit();
_IndexWriter.Optimize();
_IndexWriter.Dispose();
_FSDirectory.Dispose();
}
}
public void Add(List <RecordInfo> records)
{
if (_FSDirectory == null)
{
_FSDirectory = FSDirectory.Open(new DirectoryInfo(_IndexDir));
}
if (_IndexWriter == null)
{
Analyzer analyzer = new JiebaAnalyzer();
_IndexWriter = new IndexWriter(_FSDirectory, analyzer, IndexWriter.MaxFieldLength.UNLIMITED);
}
lock (_IndexDir)
{
foreach (RecordInfo record in records)
{
Document doc = AnalyzerDocument(record);
_IndexWriter.AddDocument(doc);
}
_IndexWriter.Commit();
_IndexWriter.Optimize();
_IndexWriter.Dispose();
_FSDirectory.Dispose();
}
}
/// <summary>
/// 分词
/// </summary>
/// <param name="content"></param>
/// <returns></returns>
static string[] SplitWords(string content)
{
List <string> result = new List <string>();
JiebaAnalyzer analyzer = new JiebaAnalyzer();
TokenStream tokenStream = analyzer.TokenStream("", new StringReader(content));
bool hasNext;
ITermAttribute ita;
while (hasNext = tokenStream.IncrementToken())
{
ita = tokenStream.GetAttribute <ITermAttribute>();
result.Add(ita.Term);
hasNext = tokenStream.IncrementToken();
}
return(result.ToArray());
}
static void JieBaTest()
{
string txt = "测试一下结巴分词";
JiebaAnalyzer analyzer = new JiebaAnalyzer();
TokenStream tokenStream = analyzer.TokenStream("", new StringReader(txt));
string result = string.Empty;
bool hasNext;
ITermAttribute ita;
while (hasNext = tokenStream.IncrementToken())
{
ita = tokenStream.GetAttribute <ITermAttribute>();
result += ita.Term + " | ";
hasNext = tokenStream.IncrementToken();
}
Console.WriteLine(result);
}