/// <summary>
/// 根据帖吧搜索查询条件构建Lucene查询条件
/// </summary>
/// <param name="Query">搜索条件</param>
/// <param name="interestTopic">是否是查询可能感兴趣的专题</param>
/// <returns></returns>
private LuceneSearchBuilder BuildLuceneSearchBuilder(TopicFullTextQuery groupQuery, bool interestTopic = false)
{
LuceneSearchBuilder searchBuilder = new LuceneSearchBuilder();
Dictionary <string, BoostLevel> fieldNameAndBoosts = new Dictionary <string, BoostLevel>();
//关键字为空就是在搜地区时关键字为空
if (groupQuery.KeywordIsNull)
{
if (!string.IsNullOrEmpty(groupQuery.NowAreaCode))
{
searchBuilder.WithField(TopicIndexDocument.AreaCode, groupQuery.NowAreaCode.TrimEnd('0'), false, BoostLevel.Hight, false);
}
else
{
searchBuilder.WithFields(TopicIndexDocument.AreaCode, new string[] { "1", "2", "3" }, false, BoostLevel.Hight, false);
}
}
if (!string.IsNullOrEmpty(groupQuery.Keyword))
{
//范围
switch (groupQuery.Range)
{
case TopicSearchRange.TOPICNAME:
searchBuilder.WithPhrase(TopicIndexDocument.TopicName, groupQuery.Keyword, BoostLevel.Hight, false);
break;
case TopicSearchRange.DESCRIPTION:
searchBuilder.WithPhrase(TopicIndexDocument.Description, groupQuery.Keyword, BoostLevel.Hight, false);
break;
case TopicSearchRange.TAG:
searchBuilder.WithPhrase(TopicIndexDocument.Tag, groupQuery.Keyword, BoostLevel.Hight, false);
break;
case TopicSearchRange.CATEGORYNAME:
searchBuilder.WithPhrase(TopicIndexDocument.CategoryName, groupQuery.Keyword, BoostLevel.Hight, false);
break;
default:
fieldNameAndBoosts.Add(TopicIndexDocument.TopicName, BoostLevel.Hight);
fieldNameAndBoosts.Add(TopicIndexDocument.Description, BoostLevel.Medium);
fieldNameAndBoosts.Add(TopicIndexDocument.Tag, BoostLevel.Medium);
fieldNameAndBoosts.Add(TopicIndexDocument.CategoryName, BoostLevel.Medium);
searchBuilder.WithPhrases(fieldNameAndBoosts, groupQuery.Keyword, BooleanClause.Occur.SHOULD, false);
break;
}
}
//根据标签搜索可能感兴趣的专题
if (interestTopic)
{
searchBuilder.WithPhrases(TopicIndexDocument.Tag, groupQuery.Tags, BoostLevel.Hight, false);
searchBuilder.NotWithFields(TopicIndexDocument.TopicId, groupQuery.TopicIds);
}
//筛选
//某地区
if (!string.IsNullOrEmpty(groupQuery.NowAreaCode))
{
searchBuilder.WithField(TopicIndexDocument.AreaCode, groupQuery.NowAreaCode.TrimEnd('0'), false, BoostLevel.Hight, true);
}
//某分类
if (groupQuery.CategoryId != 0)
{
//fixed by wanf:发现专题已经不再用全文检索了
CategoryService categoryService = new CategoryService();
IEnumerable <Category> categories = categoryService.GetDescendants(groupQuery.CategoryId);
List <string> categoryIds = new List <string> {
groupQuery.CategoryId.ToString()
};
if (categories != null && categories.Count() > 0)
{
categoryIds.AddRange(categories.Select(n => n.CategoryId.ToString()));
}
searchBuilder.WithFields(TopicIndexDocument.CategoryId, categoryIds, true, BoostLevel.Hight, true);
}
//公开的专题
searchBuilder.WithField(TopicIndexDocument.IsPublic, "1", true, BoostLevel.Hight, true);
//过滤可以显示的专题
switch (publiclyAuditStatus)
{
case PubliclyAuditStatus.Again:
case PubliclyAuditStatus.Fail:
case PubliclyAuditStatus.Pending:
case PubliclyAuditStatus.Success:
searchBuilder.WithField(TopicIndexDocument.AuditStatus, ((int)publiclyAuditStatus).ToString(), true, BoostLevel.Hight, true);
break;
case PubliclyAuditStatus.Again_GreaterThanOrEqual:
case PubliclyAuditStatus.Pending_GreaterThanOrEqual:
searchBuilder.WithinRange(TopicIndexDocument.AuditStatus, ((int)publiclyAuditStatus).ToString(), ((int)PubliclyAuditStatus.Success).ToString(), true);
break;
}
if (groupQuery.sortBy.HasValue)
{
switch (groupQuery.sortBy.Value)
{
case SortBy_Topic.DateCreated_Desc:
searchBuilder.SortByString(TopicIndexDocument.DateCreated, true);
break;
case SortBy_Topic.MemberCount_Desc:
searchBuilder.SortByString(TopicIndexDocument.MemberCount, true);
break;
case SortBy_Topic.GrowthValue_Desc:
searchBuilder.SortByString(TopicIndexDocument.GrowthValue, true);
break;
}
}
else
{
//时间倒序排序
searchBuilder.SortByString(TopicIndexDocument.DateCreated, true);
}
return(searchBuilder);
}
