/// <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;
MicroblogQuery query = new MicroblogQuery();
do
{
//分页获取微博列表
PagingDataSet <MicroblogEntity> microblogs = microBlogService.GetMicroblogs(query, pageSize, pageIndex);
totalRecords = microblogs.TotalRecords;
isEndding = (pageSize * pageIndex < totalRecords) ? false : true;
//重建索引
List <MicroblogEntity> microblogsList = microblogs.ToList <MicroblogEntity>();
IEnumerable <Document> docs = MicroblogIndexDocument.Convert(microblogsList);
searchEngine.RebuildIndex(docs, isBeginning, isEndding);
isBeginning = false;
pageIndex++;
}while (!isEndding);
}
/// <summary>
/// 更新索引
/// </summary>
/// <param name="microblogs">待更新的微博集合</param>
public void Update(IEnumerable <MicroblogEntity> microblogs)
{
IEnumerable <Document> docs = MicroblogIndexDocument.Convert(microblogs);
List <string> microblogIds = new List <string>();
foreach (MicroblogEntity microblog in microblogs)
{
microblogIds.Add(microblog.MicroblogId.ToString());
}
searchEngine.Update(docs, microblogIds, MicroblogIndexDocument.MicroblogId);
}
/// <summary>
/// 添加索引
/// </summary>
/// <param name="microblogs">待添加的微博</param>
public void Insert(IEnumerable <MicroblogEntity> microblogs)
{
List <Document> docs = new List <Document>();
foreach (var microblog in microblogs)
{
Document doc = MicroblogIndexDocument.Convert(microblog);
if (doc != null)
{
docs.Add(doc);
}
}
searchEngine.Insert(docs);
}
/// <summary>
/// 更新索引
/// </summary>
/// <param name="microblog">待更新的微博</param>
public void Update(MicroblogEntity microblog)
{
Document doc = MicroblogIndexDocument.Convert(microblog);
searchEngine.Update(doc, microblog.MicroblogId.ToString(), MicroblogIndexDocument.MicroblogId);
}
