/// <summary>
/// 排序分词查询
/// </summary>
/// <param name="keyword"></param>
/// <param name="reverse">倒序</param>
/// <param name="start"></param>
/// <param name="count"></param>
public static SearchRet SearchOrder(Func <Query> query, SortField[] orders, int start = 0, int count = 100)
{
SearchRet searchRet = new SearchRet();
Stopwatch sw = new Stopwatch();
sw.Restart();
//IndexSearcher需要传递一个IndexReader对象
var reader = LuceneFactory.GetIndexReader(Path);
IndexSearcher searcher = LuceneFactory.getIndexSearcher(reader);
//PhraseQuery用来进行多个关键词的检索，调用Add方法添加关键词
var sort = new Sort();
sort.SetSort(orders);
var topdocs = searcher.Search(query(), null, MaxHits, sort);
searchRet.Total = topdocs.totalHits;
ScoreDoc[] docs = topdocs.scoreDocs;
sw.Stop();
searchRet.Cost = sw.Elapsed.TotalMilliseconds;
searchRet.SearchDatas = new List <SearchData>();
for (int i = start; i < start + count; i++)
{
//取得文档的编号(主键)是Lucene.Net提供的
if (i > searchRet.Total - 1)
{
break;
}
int docId = docs[i].doc;
Document doc = searcher.Doc(docId);
var fileds = doc.GetFields();
var ret = new SearchData();
foreach (Field filed in fileds)
{
var name = filed.Name();
var val = filed.StringValue();
ret.Add(name, val);
}
searchRet.SearchDatas.Add(ret);
}
return(searchRet);
}
/// <summary>
/// 条件查询， 可参考 http://blog.csdn.net/weizengxun/article/details/8101097
/// </summary>
/// <param name="fun"></param>
/// <param name="start"></param>
/// <param name="count"></param>
public static SearchRet SearchCondition(Func <Query> fun, int start = 0, int count = 100)
{
SearchRet searchRet = new SearchRet();
Stopwatch sw = new Stopwatch();
sw.Restart();
//IndexSearcher需要传递一个IndexReader对象
var reader = LuceneFactory.GetIndexReader(Path);
IndexSearcher searcher = LuceneFactory.getIndexSearcher(reader); // new IndexSearcher(SearchEngineWapper._reader);
//PhraseQuery用来进行多个关键词的检索，调用Add方法添加关键词
var query = fun();
// query.Add(query8, BooleanClause.Occur.SHOULD);
//PhraseQuery. SetSlop(int slop)用来设置关键词之间的最大距离，默认是0，设置了Slop以后哪怕文档中两个关键词之间没有紧挨着也能找到。
TopScoreDocCollector collector = TopScoreDocCollector.create(MaxHits, true);
searcher.Search(query, null, collector);
searchRet.Total = collector.GetTotalHits();
searchRet.SearchDatas = new List <SearchData>();
ScoreDoc[] docs = collector.TopDocs(start, count).scoreDocs;
sw.Stop();
searchRet.Cost = sw.Elapsed.TotalMilliseconds;
for (int i = 0; i < docs.Length; i++)
{
//取得文档的编号(主键)是Lucene.Net提供的
int docId = docs[i].doc;
Document doc = searcher.Doc(docId);
var fileds = doc.GetFields();
var ret = new SearchData();
foreach (Field filed in fileds)
{
var name = filed.Name();
var val = filed.StringValue();
ret.Add(name, val);
}
searchRet.SearchDatas.Add(ret);
}
return(searchRet);
}
