public void Delete(int id, int type)
{
var model = new LuceneModel
{
ID = id,
Type = type,
IndexType = LuceneType.Delete
};
LuceneModels.Enqueue(model);
}
public List<LuceneModel> GetList(string keyword,int? type, int pageIndex, int pageSize, out int dataCount)
{
dataCount = 0;
var result = new List<LuceneModel>();
try
{
var ky = keyword;
IndexSearcher searcher;
searcher = new IndexSearcher(FSDirectory.Open(new DirectoryInfo(LucenePath)), true);
var bq = new BooleanQuery();
if (!string.IsNullOrEmpty(keyword))
{
keyword = SplitContent.SplitWords(keyword, new PanGuTokenizer());
var queryParser = new QueryParser("content", new PanGuAnalyzer(true));
var query = queryParser.Parse(keyword);
var titleQueryParser = new QueryParser("title", new PanGuAnalyzer(true));
var titleQuery = titleQueryParser.Parse(keyword);
bq.Add(query, BooleanClause.Occur.SHOULD);
//表示条件关系为“or”,BooleanClause.Occur.MUST表示“and”,BooleanClause.Occur.MUST_NOT表示“not”
bq.Add(titleQuery, BooleanClause.Occur.SHOULD);
}
else
{
Query query = new WildcardQuery(new Term("title", "*"));
bq.Add(query, BooleanClause.Occur.SHOULD);
}
if (type.HasValue)
{
Query query = new WildcardQuery(new Term("type", type.Value.ToString()));
bq.Add(query, BooleanClause.Occur.SHOULD);
}
var sort = new Sort(new SortField("createtime", SortField.INT, true));
var docs = searcher.Search(bq, null, pageSize * 1000, sort);
//var collector = TopScoreDocCollector.create(1000, true);
//searcher.Search(bq, null, collector);
//dataCount = collector.GetTotalHits();//返回总条数
//var docs = collector.TopDocs((pageIndex - 1) * pageSize, pageSize).scoreDocs;//取前十条数据 可以通过它实现搜索结果分页
////创建一个结果收集器（收集结果最大数为1000页）
//TopScoreDocCollector collector = TopScoreDocCollector.create(pageSize * 1000, true);
//searcher.Search(bq, null, collector);
//TopDocs topDoc = collector.TopDocs(0, collector.GetTotalHits());
////搜索结果总数超出指定收集器大小，则摈弃
//if (topDoc.totalHits > pageSize * 1000)
// recCount = pageSize * 1000;
//else
// recCount = topDoc.totalHits;
//搜索结果总数超出指定收集器大小，则摈弃
if (docs.totalHits > pageSize * 1000)
dataCount = pageSize * 1000;
else
dataCount = docs.totalHits;
int currentCount = (pageIndex - 1) * pageSize;
while (currentCount < dataCount && result.Count < pageSize)
{
var model = new LuceneModel();
Document doc = searcher.Doc(docs.scoreDocs[currentCount].doc);
model.Content = doc.Get("content");
model.HightLightContent = SplitContent.HightLight(ky, doc.Get("content"));
model.Title = doc.Get("title");
model.HightLightTitle = SplitContent.HightLight(ky, doc.Get("title"));
model.ID = Convert.ToInt32(doc.Get("id"));
model.ClickCount = Convert.ToInt32(doc.Get("clickcount"));
model.Images = doc.Get("images");
model.Tags = doc.Get("tags");
model.Type = Convert.ToInt32(doc.Get("type"));
model.CreateTime = DateTimeExtension.UnixToDateTime(Convert.ToInt32(doc.Get("createtime")));
result.Add(model);
#region 循环中有try catch 非常消耗性能 解决方案 报错不处理
//try
//{
// model.Content = doc.Get("content");
// model.HightLightContent = SplitContent.HightLight(ky, doc.Get("content"));
// model.Title = doc.Get("title");
// model.HightLightTitle = SplitContent.HightLight(ky, doc.Get("title"));
// model.ID = Convert.ToInt32(doc.Get("id"));
// model.ClickCount = Convert.ToInt32(doc.Get("clickcount"));
// model.Images = doc.Get("images");
// model.Tags = doc.Get("tags");
// model.Type = Convert.ToInt32(doc.Get("type"));
// model.CreateTime = DateTimeExtension.UnixToDateTime(Convert.ToInt32(doc.Get("createtime")));
// result.Add(model);
//}
//catch (Exception e)
//{
// LoggerHelper.Logger(
// string.Format("Lucene搜索错误：ID:{0},Type:{1},Title:{2},CreateTime:{3}", doc.Get("id"),
// doc.Get("type"), doc.Get("title"), doc.Get("createtime")), e);
//}
//finally
//{
// i++;
//}
#endregion
currentCount++;
}
return result;
}
catch (Exception ex)
{
throw new LuceneException.LuceneException("Lucene获取列表错误",ex);
}
}
public void Edit(LuceneModel model)
{
model.IndexType = LuceneType.Modify;
LuceneModels.Enqueue(model);
}
public void Add(LuceneModel model)
{
model.IndexType = LuceneType.Insert;
LuceneModels.Enqueue(model);
}
private void ModifyData(LuceneModel model, IndexWriter writer)
{
DeleteData(model, writer);
InsertData(model,writer);
}
private void InsertData(LuceneModel model, IndexWriter writer)
{
var document = new Document();//new一篇文档对象 --一条记录对应索引库中的一个文档
//向文档中添加字段 Add(字段,值,是否保存字段原始值,是否针对该列创建索引)
//--所有字段的值都将以字符串类型保存 因为索引库只存储字符串类型数据
document.Add(new Field("id", model.ID.ToString(), Field.Store.YES, Field.Index.NOT_ANALYZED));
//Field.Store:表示是否保存字段原值。指定Field.Store.YES的字段在检索时才能用document.Get取出原值
//Field.Index.NOT_ANALYZED:指定不按照分词后的结果保存--是否按分词后结果保存取决于是否对该列内容进行模糊查询
document.Add(new NumericField("type", Field.Store.YES, true).SetIntValue(model.Type));
document.Add(new Field("title", model.Title, Field.Store.YES, Field.Index.ANALYZED,
Field.TermVector.WITH_POSITIONS_OFFSETS));
//Field.Index.ANALYZED:指定文章内容按照分词后结果保存 否则无法实现后续的模糊查询
//WITH_POSITIONS_OFFSETS:指示不仅保存分割后的词 还保存词之间的距离
if (!string.IsNullOrEmpty(model.Content))
document.Add(new Field("content", model.Content, Field.Store.YES, Field.Index.ANALYZED,
Field.TermVector.WITH_POSITIONS_OFFSETS));
document.Add(
new NumericField("createtime", Field.Store.YES, true).SetIntValue(
DateTimeExtension.DateTimeToUnix(model.CreateTime)));
if (!string.IsNullOrEmpty(model.Images))
document.Add(new Field("images", model.Images, Field.Store.YES, Field.Index.NO));
if (!string.IsNullOrEmpty(model.Tags))
document.Add(new Field("tags", model.Tags, Field.Store.YES, Field.Index.ANALYZED,
Field.TermVector.WITH_POSITIONS_OFFSETS));
document.Add(new NumericField("clickcount", Field.Store.YES, true).SetIntValue(model.ClickCount));
writer.AddDocument(document);
}
private void DeleteData(LuceneModel model, IndexWriter writer)
{
writer.DeleteDocuments(new[] {new Term("id", model.ID.ToString()), new Term("type", model.Type.ToString())});
}
