/// <summary>
/// 日志分页搜索
/// </summary>
/// <param name="WikiQuery">搜索条件</param>
/// <returns>符合搜索条件的分页集合</returns>
public PagingDataSet <WikiPage> Search(WikiFullTextQuery WikiQuery)
{
if (WikiQuery.SiteCategoryId == 0)
{
if (string.IsNullOrWhiteSpace(WikiQuery.Keyword))
{
return(new PagingDataSet <WikiPage>(new List <WikiPage>()));
}
}
LuceneSearchBuilder searchBuilder = BuildLuceneSearchBuilder(WikiQuery);
//使用LuceneSearchBuilder构建Lucene需要Query、Filter、Sort
Query query = null;
Filter filter = null;
Sort sort = null;
searchBuilder.BuildQuery(out query, out filter, out sort);
//调用SearchService.Search(),执行搜索
PagingDataSet <Document> searchResult = searchEngine.Search(query, filter, sort, WikiQuery.PageIndex, WikiQuery.PageSize);
IEnumerable <Document> docs = searchResult.ToList <Document>();
//解析出搜索结果中的日志ID
List <long> WikiPageIds = new List <long>();
//获取索引中百科的标签
Dictionary <long, IEnumerable <string> > WikiTags = new Dictionary <long, IEnumerable <string> >();
foreach (Document doc in docs)
{
long WikiPageId = long.Parse(doc.Get(WikiIndexDocument.PageId));
WikiPageIds.Add(WikiPageId);
WikiTags[WikiPageId] = doc.GetValues(WikiIndexDocument.Tag).ToList <string>();
}
//根据日志ID列表批量查询日志实例
IEnumerable <WikiPage> WikiPageList = wikiService.GetWikiPages(WikiPageIds);
foreach (var WikiPage in WikiPageList)
{
if (WikiTags.ContainsKey(WikiPage.PageId))
{
WikiPage.TagNames = WikiTags[WikiPage.PageId];
}
}
//组装分页对象
PagingDataSet <WikiPage> WikiPages = new PagingDataSet <WikiPage>(WikiPageList)
{
TotalRecords = searchResult.TotalRecords,
PageSize = searchResult.PageSize,
PageIndex = searchResult.PageIndex,
QueryDuration = searchResult.QueryDuration
};
return(WikiPages);
}
/// <summary>
/// 根据帖吧搜索查询条件构建Lucene查询条件
/// </summary>
/// <param name="Query"></param>
/// <returns></returns>
private LuceneSearchBuilder BuildLuceneSearchBuilder(WikiFullTextQuery WikiQuery)
{
LuceneSearchBuilder searchBuilder = new LuceneSearchBuilder();
//范围
Dictionary <string, BoostLevel> fieldNameAndBoosts = new Dictionary <string, BoostLevel>();
if (!string.IsNullOrEmpty(WikiQuery.Keyword))
{
switch (WikiQuery.Range)
{
case WikiSearchRange.Title:
searchBuilder.WithPhrase(WikiIndexDocument.Title, WikiQuery.Keyword, BoostLevel.Hight, false);
break;
case WikiSearchRange.Category:
searchBuilder.WithPhrase(WikiIndexDocument.CategoryId, WikiQuery.Keyword, BoostLevel.Hight, false);
break;
case WikiSearchRange.AUTHOR:
searchBuilder.WithPhrase(WikiIndexDocument.Author, WikiQuery.Keyword, BoostLevel.Hight, false);
break;
case WikiSearchRange.TAG:
searchBuilder.WithPhrase(WikiIndexDocument.Tag, WikiQuery.Keyword, BoostLevel.Hight, false);
break;
default:
fieldNameAndBoosts.Add(WikiIndexDocument.Title, BoostLevel.Hight);
fieldNameAndBoosts.Add(WikiIndexDocument.Tag, BoostLevel.Medium);
fieldNameAndBoosts.Add(WikiIndexDocument.Body, BoostLevel.Medium);
fieldNameAndBoosts.Add(WikiIndexDocument.Author, BoostLevel.Low);
fieldNameAndBoosts.Add(WikiIndexDocument.CategoryId, BoostLevel.Hight);
searchBuilder.WithPhrases(fieldNameAndBoosts, WikiQuery.Keyword, BooleanClause.Occur.SHOULD, false);
break;
}
}
//某个站点分类
if (WikiQuery.SiteCategoryId != 0)
{
searchBuilder.WithField(WikiIndexDocument.CategoryId, WikiQuery.SiteCategoryId.ToString(), true, BoostLevel.Hight, true);
}
return(searchBuilder);
}
