/// <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="interestGroup">是否是查询可能感兴趣的群组</param>
/// <returns></returns>
private LuceneSearchBuilder BuildLuceneSearchBuilder(GroupFullTextQuery groupQuery, bool interestGroup = 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(GroupIndexDocument.AreaCode, groupQuery.NowAreaCode.TrimEnd('0'), false, BoostLevel.Hight, false);
else
searchBuilder.WithFields(GroupIndexDocument.AreaCode, new string[] { "1", "2", "3" }, false, BoostLevel.Hight, false);
}
if (!string.IsNullOrEmpty(groupQuery.Keyword))
{
//范围
switch (groupQuery.Range)
{
case GroupSearchRange.GROUPNAME:
searchBuilder.WithPhrase(GroupIndexDocument.GroupName, groupQuery.Keyword, BoostLevel.Hight, false);
break;
case GroupSearchRange.DESCRIPTION:
searchBuilder.WithPhrase(GroupIndexDocument.Description, groupQuery.Keyword, BoostLevel.Hight, false);
break;
case GroupSearchRange.TAG:
searchBuilder.WithPhrase(GroupIndexDocument.Tag, groupQuery.Keyword, BoostLevel.Hight, false);
break;
case GroupSearchRange.CATEGORYNAME:
searchBuilder.WithPhrase(GroupIndexDocument.CategoryName, groupQuery.Keyword, BoostLevel.Hight, false);
break;
default:
fieldNameAndBoosts.Add(GroupIndexDocument.GroupName, BoostLevel.Hight);
fieldNameAndBoosts.Add(GroupIndexDocument.Description, BoostLevel.Medium);
fieldNameAndBoosts.Add(GroupIndexDocument.Tag, BoostLevel.Medium);
fieldNameAndBoosts.Add(GroupIndexDocument.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群组
if (interestGroup)
{
searchBuilder.WithPhrases(GroupIndexDocument.Tag, groupQuery.Tags, BoostLevel.Hight, false);
searchBuilder.NotWithFields(GroupIndexDocument.GroupId, groupQuery.GroupIds);
}
//筛选
//某地区
if (!string.IsNullOrEmpty(groupQuery.NowAreaCode))
{
searchBuilder.WithField(GroupIndexDocument.AreaCode, groupQuery.NowAreaCode.TrimEnd('0'), false, BoostLevel.Hight, true);
}
//某分类
if (groupQuery.CategoryId != 0)
{
//fixed by wanf:发现群组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(GroupIndexDocument.CategoryId, categoryIds, true, BoostLevel.Hight, true);
}
//公开的群组
searchBuilder.WithField(GroupIndexDocument.IsPublic, "1", true, BoostLevel.Hight, true);
//过滤可以显示的群组
switch (publiclyAuditStatus)
{
case PubliclyAuditStatus.Again:
case PubliclyAuditStatus.Fail:
case PubliclyAuditStatus.Pending:
case PubliclyAuditStatus.Success:
searchBuilder.WithField(GroupIndexDocument.AuditStatus, ((int)publiclyAuditStatus).ToString(), true, BoostLevel.Hight, true);
break;
case PubliclyAuditStatus.Again_GreaterThanOrEqual:
case PubliclyAuditStatus.Pending_GreaterThanOrEqual:
searchBuilder.WithinRange(GroupIndexDocument.AuditStatus, ((int)publiclyAuditStatus).ToString(), ((int)PubliclyAuditStatus.Success).ToString(), true);
break;
}
if (groupQuery.sortBy.HasValue)
{
switch (groupQuery.sortBy.Value)
{
case SortBy_Group.DateCreated_Desc:
searchBuilder.SortByString(GroupIndexDocument.DateCreated, true);
break;
case SortBy_Group.MemberCount_Desc:
searchBuilder.SortByString(GroupIndexDocument.MemberCount, true);
break;
case SortBy_Group.GrowthValue_Desc:
searchBuilder.SortByString(GroupIndexDocument.GrowthValue, true);
break;
}
}
else
{
//时间倒序排序
searchBuilder.SortByString(GroupIndexDocument.DateCreated, true);
}
return searchBuilder;
}
