/// <summary>
/// 将关键字进行高亮显示
/// </summary>
/// <param name="keywords">属性和关键字的字典</param>
/// <param name="t">高亮显示的对象</param>
/// <returns></returns>
public AbstractFileBase InitHightLight(Dictionary <string, string> keywords, AbstractFileBase t)
{
if (t == null)
{
throw new Exception("需要高亮显示的对象不存在");
}
SimpleHTMLFormatter simpleHTMLFormatter = new PanGu.HighLight.SimpleHTMLFormatter("<font color=\"red\">", "</font>");
Highlighter highlighter = new PanGu.HighLight.Highlighter(simpleHTMLFormatter, new Segment());
highlighter.FragmentSize = MAXFRAGMENTSIZE;
foreach (var item in hightLightFields)
{
switch (item)
{
//case HightLightField.FileName:
// string fileName = string.Empty;
// keywords.TryGetValue("fileName", out fileName);
// if (!string.IsNullOrWhiteSpace(fileName))
// {
// t.FileName = highlighter.GetBestFragment(fileName, t.FileName);
// }
// break;
//case HightLightField.FilePath:
// string filePath = string.Empty;
// keywords.TryGetValue("filePath", out filePath);
// if (!string.IsNullOrWhiteSpace(filePath))
// {
// t.FilePath = highlighter.GetBestFragment(filePath, t.FilePath);
// }
// break;
//case HightLightField.CreateTime:
// string createTime = string.Empty;
// keywords.TryGetValue("createTime", out createTime);
// if (!string.IsNullOrWhiteSpace(createTime))
// {
// t.CreateTime = highlighter.GetBestFragment(createTime, t.CreateTime);
// }
// break;
case HightLightField.Content:
string content = string.Empty;
keywords.TryGetValue("content", out content);
if (!string.IsNullOrWhiteSpace(content))
{
//有问题
t.Content = highlighter.GetBestFragment(content, t.Content);
}
break;
//case HightLightField.UpLoadPersonId:
// string upLoadPersonId = string.Empty;
// keywords.TryGetValue("upLoadPersonId", out upLoadPersonId);
// if (!string.IsNullOrWhiteSpace(upLoadPersonId))
// {
// //有问题
// t.UpLoadPersonId = highlighter.GetBestFragment(upLoadPersonId, t.UpLoadPersonId);
// }
// break;
}
}
return(t);
}
/// <summary>
/// 查询索引
/// </summary>
/// <param name="key">关键字</param>
/// <param>人员权限</param>
/// <returns></returns
public ResultSet SearchIndex(string key, int pageNum, string userHandle, string lastFileId, string nextFileId)
{
LibHandle handle = LibHandleCache.Default.GetCurrentHandle(userHandle) as LibHandle;
//页大小
int pageSize = 8;
IHightLighter hightLighter = new HightLighterFactory().Create();
IIndexManager indexManager = new IndexManagerFactory().Create();
Dictionary <string, string> dic = new Dictionary <string, string>();
dic.Add("content", key);
SearchResult result = null;
if (string.IsNullOrEmpty(lastFileId) && string.IsNullOrEmpty(nextFileId))//第一次查询
{
result = (SearchResult)indexManager.SearchIndex(dic, pageNum, pageSize, handle);
}
else if (string.IsNullOrEmpty(lastFileId))//上一页
{
result = (SearchResult)indexManager.SearchPrevIndex(dic, pageNum, pageSize, handle, nextFileId);
}
else if (string.IsNullOrEmpty(nextFileId))//下一页
{
result = (SearchResult)indexManager.SearchNextIndex(dic, pageNum, pageSize, handle, lastFileId);
}
ResultSet resultSet = new ResultSet();
resultSet.SearchTime = result.SearchTime;
resultSet.PageNum = pageNum;
resultSet.ResultsCount = result.TotalHits;
resultSet.PageCount = (resultSet.ResultsCount - 1) / pageSize + 1;
DirLinkAddress dirlink;
foreach (var item in result.Docs)
{
AbstractFileBase fileBase = hightLighter.InitHightLight(dic, item);
FileInfoItem info = new FileInfoItem()
{
FileId = fileBase.FileId,
Contents = fileBase.Content
};
dirlink = new DirLinkAddress(fileBase.FileId);
info.FileName = dirlink.DocName;
info.DirId = dirlink.DirID;
info.DirType = dirlink.DirType;
info.Path = dirlink.DirNameLink;
resultSet.FileInfoItems.Add(info);
}
if (resultSet.FileInfoItems.Count == 0)
{
return(null);
}
return(resultSet);
}
/// <summary>
/// 删除索引
/// </summary>
/// <param name="fileInfo"></param>
/// <returns></returns>
public bool DeleteIndex(AbstractFileBase fileInfo)
{
try
{
IndexWriter writer = new IndexWriter(FSDirectory.Open(new System.IO.DirectoryInfo(IndexDic)), PanGuAnalyzer, IndexWriter.MaxFieldLength.LIMITED);
writer.DeleteDocuments(new Term("fileId", fileInfo.FileId));
//这两句一定要执行
writer.Optimize();
writer.Close();
LibDataAccess dataAccess = new LibDataAccess();
dataAccess.ExecuteNonQuery(string.Format("update DMDOCUMENT set ISFULLINDEX = 0 where DOCID = {0}", LibStringBuilder.GetQuotString(fileInfo.FileId)));
return(true);
}
catch (Exception)
{
return(false);
}
}
/// <summary>
/// 创建索引
/// </summary>
/// <param name="fileInfo"></param>
/// <returns></returns>
public bool CreateIndex(AbstractFileBase fileInfo)
{
try
{
IndexWriter writer = new IndexWriter(FSDirectory.Open(new System.IO.DirectoryInfo(IndexDic)), PanGuAnalyzer, IndexWriter.MaxFieldLength.LIMITED);
//FileStream fs = File.OpenRead(Path.Combine(fileInfo.FilePath, fileInfo.FileName));
//1.创建Document对象
Document doc = new Document();
//2.给doc对象添加Field
doc.Add(new Field("fileId", fileInfo.FileId, Field.Store.YES, Field.Index.NOT_ANALYZED));
//doc.Add(new Field("fileName", fileInfo.FileName, Field.Store.YES, Field.Index.ANALYZED));
//doc.Add(new Field("filePath", fileInfo.FilePath, Field.Store.YES, Field.Index.ANALYZED));
//doc.Add(new Field("createTime", fileInfo.CreateTime, Field.Store.YES, Field.Index.ANALYZED));
//doc.Add(new Field("upLoadPersonId", fileInfo.UpLoadPersonId, Field.Store.YES, Field.Index.ANALYZED));
//doc.Add(new Field("content", new StreamReader(fs, Encoding.UTF8)));
doc.Add(new Field("content", fileInfo.Content, Field.Store.YES, Field.Index.ANALYZED));
//将doc对象写入索引文件
writer.AddDocument(doc);
writer.Optimize();
writer.Commit();
writer.Close();
//修改数据库的
LibDataAccess dataAccess = new LibDataAccess();
dataAccess.ExecuteNonQuery(string.Format("update DMDOCUMENT set ISFULLINDEX = 1 where DOCID = {0}", LibStringBuilder.GetQuotString(fileInfo.FileId)));
return(true);
}
catch (Exception)
{
return(false);
}
}
