/// <summary>
/// 创建hoot引擎
/// </summary>
/// <param name="IndexPath">索引地址目录，全路径</param>
/// <param name="FileName">文件名（最好无后缀）</param>
/// <param name="DocMode">是否文档模式</param>
public HootEngine(string IndexPath, string FileName, bool DocMode)
{
_Path = IndexPath;
_FileName = FileName;
_docMode = DocMode;
if (_Path.EndsWith(Path.DirectorySeparatorChar.ToString()) == false)
{
_Path += Path.DirectorySeparatorChar;
}
if (Directory.Exists(IndexPath))
{
Directory.CreateDirectory(IndexPath);
}
_log.Debug("hOOOOOOt Version:" + System.Reflection.Assembly.GetExecutingAssembly().GetName().Version.ToString());
_log.Debug("Starting hOOOOOOt....");
_log.Debug("Storage Folder = " + _Path);
if (DocMode)
{
_docs = new KeyStoreString(_Path, FileName, false);
// read deleted
_deleted = new BoolIndex(_Path, FileName);
_lastDocNum = (int)_docs.Count();//得到文档数，用于编号
}
_bitmaps = new BitmapIndex(_Path, _FileName);
// read words
LoadWords();
}
public void Shutdown()
{
lock (_lock)
{
InternalSave();
if (_deleted != null)
{
_deleted.SaveIndex();
_deleted.Shutdown();
_deleted = null;
}
if (_bitmaps != null)
{
_bitmaps.Commit(Global.FreeBitmapMemoryOnSave);
_bitmaps.Shutdown();
_bitmaps = null;
}
if (_docMode)
{
_docs.Shutdown();
}
}
}
public IndexFile(string filename, byte maxKeySize)
{
_T = RDBDataType <T> .ByteHandler();
if (typeof(T) == typeof(string))
{
_externalStrings = true;
_maxKeySize = 4;// blocknum:int
}
else
{
_maxKeySize = maxKeySize;
}
_PageNodeCount = Global.PageItemCount; // pageNodeCount;
_rowSize = (_maxKeySize + 1 + 4 + 4); //行的大小
string path = Path.GetDirectoryName(filename);
Directory.CreateDirectory(path);
if (File.Exists(filename))
{
// if file exists open and read header
_file = File.Open(filename, FileMode.Open, FileAccess.ReadWrite, FileShare.ReadWrite);
this.ReadFileHeader();
if (_externalStrings == false)// if the file says different
{
_rowSize = (_maxKeySize + 1 + 4 + 4);
}
// compute last page number from file length
_PageLength = (_BlockHeader.Length + _rowSize * (_PageNodeCount));
_LastPageNumber = (int)((_file.Length - _FileHeader.Length) / _PageLength);
}
else
{
// else create new file
_file = File.Open(filename, FileMode.Create, FileAccess.ReadWrite, FileShare.ReadWrite);
_PageLength = (_BlockHeader.Length + _rowSize * (_PageNodeCount));
this.CreateFileHeader(0);
_LastPageNumber = (int)((_file.Length - _FileHeader.Length) / _PageLength);
}
if (_externalStrings)
{
_strings = new KeyStoreHF(path, Path.GetFileNameWithoutExtension(filename) + ".strings");
}
if (_LastPageNumber == 0)
{
_LastPageNumber = 1;
}
// bitmap duplicates
if (_allowDups)
{
_bitmap = new BitmapIndex(Path.GetDirectoryName(filename), Path.GetFileNameWithoutExtension(filename));
}
}
public L(BitmapIndex sc)
{
_sc = sc;
_sc.CheckInternalOP();
}