/// <summary>
/// 查询数据
/// </summary>
/// <param name="startRowIndex"></param>
/// <param name="pageSize"></param>
/// <param name="totalCount"></param>
/// <returns></returns>
public List <KnowledgeInfoEntity> ShowDatas(SearchParam SearchParam, string[] JS_Fields)
{
List <KnowledgeInfoEntity> listData = new List <KnowledgeInfoEntity>();
FSDirectory directory = FSDirectory.Open(new DirectoryInfo(__SearchAppIndexPath), new NoLockFactory());
IndexReader reader = IndexReader.Open(directory, true);
//IndexSearcher是进行搜索的类
IndexSearcher searcher = new IndexSearcher(reader);
BooleanQuery bQuery = new BooleanQuery();
//被""包裹,不进行分词处理
if (SearchParam.KeyValue.Length > 2 &&
SearchParam.KeyValue.IndexOf("\"") == 0 &&
SearchParam.KeyValue.LastIndexOf("\"") == SearchParam.KeyValue.Length - 1)
{
SearchParam.KeyValue = SearchParam.KeyValue.Substring(1, SearchParam.KeyValue.Length - 2);
}
else
{
SearchParam.KeyValue = ReplaceChar(SearchParam.KeyValue);
////分词
SearchParam.KeyValue = GetKeyWordsSplitBySpace(SearchParam.KeyValue);
}
if (string.IsNullOrEmpty(SearchParam.KeyValue))
{
return(listData);
}
QueryParser parse;
Query query;
foreach (string strField in JS_Fields)
{
//创建标题索引搜索
parse = new QueryParser(Lucene.Net.Util.Version.LUCENE_29, strField, new PanGuAnalyzer());
query = parse.Parse(SearchParam.KeyValue);
parse.SetDefaultOperator(QueryParser.Operator.AND);
bQuery.Add(query, BooleanClause.Occur.SHOULD);
}
TopScoreDocCollector collector = TopScoreDocCollector.create(__SearchAppResultMaxLength, true);
//Sort sort = new Sort(new SortField("Addtime", SortField.DOC, true));
Filter filter = null;
if (!string.IsNullOrEmpty(SearchParam.DataType))
{
filter = new TermRangeFilter("DataType", SearchParam.DataType, SearchParam.DataType, true, true);
}
searcher.Search(bQuery, filter, collector);
SearchParam.TotalCount = collector.GetTotalHits();//返回总条数
//分页,下标从0开始，0是第一条记录
ScoreDoc[] docs = collector.TopDocs((SearchParam.PageIndex - 1) * SearchParam.PageSize, SearchParam.PageSize).scoreDocs;
for (int i = 0; i < docs.Length; i++)
{
//取文档的编号，这个是主键，lucene.net分配
int docID = docs[i].doc;
//检索结果中只有文档的id，如果要取Document，则需要Doc再去取
//降低内容占用
Document doc = searcher.Doc(docID);
string content = doc.Get("ContentNoHtml");
if (content.Length > 200)
{
content = content.Substring(0, 199) + "……";
}
KnowledgeInfoEntity itemData = new KnowledgeInfoEntity()
{
knowledgeGUID = new Guid(doc.Get("knowledgeGUID")).ToString(),
Title = doc.Get("Title"),
Summary = doc.Get("Summary"),
ContentNoHtml = content,
ContentHtml = doc.Get("ContentHtml"),
CreateBy = doc.Get("CreateBy"),
UpdateDate = DateTime.Parse(doc.Get("UpdateDate")),
ViewCount = int.Parse(doc.Get("ViewCount")),
DataType = doc.Get("DataType"),
};
//高亮
itemData.Title = Preview(itemData.Title, SearchParam.KeyValue);
itemData.ContentNoHtml = Preview(itemData.ContentNoHtml, SearchParam.KeyValue);
itemData.Summary = Preview(itemData.Summary, SearchParam.KeyValue);
listData.Add(itemData);
}
return(listData);
}
/// <summary>
/// 默认检索方式,按关键字,标题,内容检索,后期考虑做成配置
/// </summary>
/// <param name="SearchParam"></param>
/// <returns></returns>
public List <KnowledgeInfoEntity> ShowDatasByTAndC(SearchParam SearchParam)
{
string[] JS_Fields = new string[] { "Title", "Summary", "ContentNoHtml" };
return(ShowDatas(SearchParam, JS_Fields));
}