/// <summary>
/// 重建索引
/// </summary>
public void RebuildIndex()
{
//pageSize参数决定了每次批量取多少条数据进行索引。要注意的是，如果是分布式搜索，客户端会将这部分数据通过WCF传递给服务器端，而WCF默认的最大传输数据量是65535B，pageSize较大时这个设置显然是不够用的，WCF会报400错误；系统现在将最大传输量放宽了，但仍要注意一次不要传输过多，如遇异常，可适当调小pageSize的值
int pageSize = 1000;
int pageIndex = 1;
long totalRecords = 0;
bool isBeginning = true;
bool isEndding = false;
UserQuery query = new UserQuery();
do
{
Dictionary <long, dynamic> userDictionary = new Dictionary <long, dynamic>();
//分页获取用户列表
PagingDataSet <User> users = userService.GetUsers(query, pageSize, pageIndex);
totalRecords = users.TotalRecords;
isEndding = (pageSize * pageIndex < totalRecords) ? false : true;
List <long> userIds = new List <long>();
//以用户id为key，存入字典类
foreach (User user in users.ToList <User>())
{
//构建动态对象，用于存放用户搜索相关字段
dynamic dUser = new ExpandoObject();
dUser.UserId = user.UserId;
dUser.UserName = user.UserName;
dUser.TrueName = user.TrueName;
dUser.NickName = user.NickName;
dUser.DateCreated = user.DateCreated;
dUser.LastActivityTime = user.LastActivityTime;
//初始化动态对象
dUser.Gender = null;
dUser.Birthday = null;
dUser.LunarBirthday = null;
dUser.BirthdayType = null;
dUser.NowAreaCode = null;
dUser.HomeAreaCode = null;
dUser.AvatarImage = null;
dUser.Introduction = null;
dUser.Schools = new List <string>();
dUser.CompanyNames = new List <string>();
dUser.TagNames = new List <string>();
dUser.AvatarImage = user.Avatar;
userDictionary.Add(user.UserId, dUser);
userIds.Add(user.UserId);
}
//根据用户id列表查询基本资料
IEnumerable <UserProfile> userProfiles = userProfileService.GetUserProfiles(userIds);
foreach (UserProfile userProfile in userProfiles)
{
dynamic dUser = userDictionary[userProfile.UserId];
dUser.Gender = userProfile.Gender;
dUser.Birthday = userProfile.Birthday;
dUser.LunarBirthday = userProfile.LunarBirthday;
dUser.BirthdayType = userProfile.BirthdayType;
dUser.NowAreaCode = userProfile.NowAreaCode;
dUser.HomeAreaCode = userProfile.HomeAreaCode;
dUser.Introduction = userProfile.Introduction;
}
//根据用户id列表查询教育经历
IEnumerable <long> educationExperienceIds = userProfileService.GetEducationExperienceIdsByUserIds(userIds);
IEnumerable <EducationExperience> educationExperiences = userProfileService.GetEducationExperiences(educationExperienceIds);
foreach (EducationExperience educationExperience in educationExperiences)
{
dynamic dUser = userDictionary[educationExperience.UserId];
dUser.Schools.Add(educationExperience.School);
}
//根据用户id列表查询工作经历
IEnumerable <long> workExperienceIds = userProfileService.GetWorkExperienceIdsByUserIds(userIds);
IEnumerable <WorkExperience> workExperiences = userProfileService.GetWorkExperiences(workExperienceIds);
foreach (WorkExperience workExperience in workExperiences)
{
dynamic dUser = userDictionary[workExperience.UserId];
dUser.CompanyNames.Add(workExperience.CompanyName);
}
//根据用户id列表查询tags
//fixed by jiangshl,修改了方法名，此处是为了性能考虑，以用户ID列表为参数，批量查询出对应的ItemInTag的ID，再批量查询出ItemInTag实体
IEnumerable <long> itemInTagIds = tagService.GetItemInTagIdsByItemIds(userIds);
IEnumerable <ItemInTag> itemInTags = tagService.GetItemInTags(itemInTagIds);
foreach (ItemInTag itemInTag in itemInTags)
{
dynamic dUser = userDictionary[itemInTag.ItemId];
dUser.TagNames.Add(itemInTag.TagName);
}
//重建索引
List <dynamic> userList = new List <dynamic>();
userList.AddRange(userDictionary.Values);
IEnumerable <Document> docs = UserIndexDocument.Convert(userList);
searchEngine.RebuildIndex(docs, isBeginning, isEndding);
isBeginning = false;
pageIndex++;
}while (!isEndding);
}
