/// <summary>
/// 异步根据id查询一条数据
/// </summary>
/// <param name="host">mongodb连接信息</param>
/// <param name="id">objectid</param>
/// <returns></returns>
public static async Task <T> FindOneAsync(MongodbHost host, string id, string[] field = null)
{
try
{
var client = MongodbClient <T> .MongodbInfoClient(host);
FilterDefinition <T> filter = Builders <T> .Filter.Eq("_id", new ObjectId(id));
//不指定查询字段
if (field == null || field.Length == 0)
{
return(await client.Find(filter).FirstOrDefaultAsync());
}
//制定查询字段
var fieldList = new List <ProjectionDefinition <T> >();
for (int i = 0; i < field.Length; i++)
{
fieldList.Add(Builders <T> .Projection.Include(field[i].ToString()));
}
var projection = Builders <T> .Projection.Combine(fieldList);
fieldList?.Clear();
return(await client.Find(filter).Project <T>(projection).FirstOrDefaultAsync());
}
catch (Exception ex)
{
throw ex;
}
}
/// <summary>
/// 获取mongodb实例
/// </summary>
/// <param name="host">连接字符串，库，表</param>
/// <returns></returns>
public static IMongoCollection <T> MongodbInfoClient(MongodbHost host)
{
MongoClient client = new MongoClient(host.Connection);
var dataBase = client.GetDatabase(host.DataBase);
return(dataBase.GetCollection <T>(host.Table));
}
/// <summary>
/// 异步批量修改数据
/// </summary>
/// <param name="dic">要修改的字段</param>
/// <param name="host">mongodb连接信息</param>
/// <param name="filter">修改条件</param>
/// <returns></returns>
public static async Task <UpdateResult> UpdateManayAsync(MongodbHost host, Dictionary <string, string> dic, FilterDefinition <T> filter)
{
try
{
var client = MongodbClient <T> .MongodbInfoClient(host);
T t = new T();
//要修改的字段
var list = new List <UpdateDefinition <T> >();
foreach (var item in t.GetType().GetProperties())
{
if (!dic.ContainsKey(item.Name))
{
continue;
}
var value = dic[item.Name];
list.Add(Builders <T> .Update.Set(item.Name, value));
}
var updatefilter = Builders <T> .Update.Combine(list);
return(await client.UpdateManyAsync(filter, updatefilter));
}
catch (Exception ex)
{
throw ex;
}
}
/// <summary>
/// 异步修改一条数据
/// </summary>
/// <param name="t">添加的实体</param>
/// <param name="host">mongodb连接信息</param>
/// <returns></returns>
public static async Task <UpdateResult> UpdateAsync(MongodbHost host, T t, string id)
{
try
{
var client = MongodbClient <T> .MongodbInfoClient(host);
//修改条件
FilterDefinition <T> filter = Builders <T> .Filter.Eq("_id", new ObjectId(id));
//要修改的字段
var list = new List <UpdateDefinition <T> >();
foreach (var item in t.GetType().GetProperties())
{
if (item.Name.ToLower() == "id")
{
continue;
}
list.Add(Builders <T> .Update.Set(item.Name, item.GetValue(t)));
}
var updatefilter = Builders <T> .Update.Combine(list);
return(await client.UpdateOneAsync(filter, updatefilter));
}
catch (Exception ex)
{
throw ex;
}
}
/// <summary>
/// 异步根据条件获取总数
/// </summary>
/// <param name="host">mongodb连接信息</param>
/// <param name="filter">条件</param>
/// <returns></returns>
public static async Task <long> CountAsync(MongodbHost host, FilterDefinition <T> filter)
{
try
{
var client = MongodbClient <T> .MongodbInfoClient(host);
return(await client.CountDocumentsAsync(filter));
}
catch (Exception ex)
{
throw ex;
}
}
/// <summary>
/// 根据条件获取总数
/// </summary>
/// <param name="host">mongodb连接信息</param>
/// <param name="filter">条件</param>
/// <returns></returns>
public static long Count(MongodbHost host, FilterDefinition <T> filter)
{
try
{
var client = MongodbClient <T> .MongodbInfoClient(host);
return(client.CountDocuments(filter));
}
catch (Exception ex)
{
throw ex;
}
}
/// <summary>
/// 异步删除多条数据
/// </summary>
/// <param name="host">mongodb连接信息</param>
/// <param name="filter">删除的条件</param>
/// <returns></returns>
public static async Task <DeleteResult> DeleteManyAsync(MongodbHost host, FilterDefinition <T> filter)
{
try
{
var client = MongodbClient <T> .MongodbInfoClient(host);
return(await client.DeleteManyAsync(filter));
}
catch (Exception ex)
{
throw ex;
}
}
/// <summary>
/// 删除一条数据
/// </summary>
/// <param name="host">mongodb连接信息</param>
/// <param name="filter">删除的条件</param>
/// <returns></returns>
public static DeleteResult DeleteMany(MongodbHost host, FilterDefinition <T> filter)
{
try
{
var client = MongodbClient <T> .MongodbInfoClient(host);
return(client.DeleteMany(filter));
}
catch (Exception ex)
{
throw ex;
}
}
/// <summary>
/// 批量插入
/// </summary>
/// <param name="host">mongodb连接信息</param>
/// <param name="t">实体集合</param>
/// <returns></returns>
public static int InsertMany(MongodbHost host, List <T> t)
{
try
{
var client = MongodbClient <T> .MongodbInfoClient(host);
client.InsertMany(t);
return(1);
}
catch (Exception ex)
{
return(0);
}
}
/// <summary>
/// 添加一条数据
/// </summary>
/// <param name="t">添加的实体</param>
/// <param name="host">mongodb连接信息</param>
/// <returns></returns>
public static int Add(MongodbHost host, T t)
{
try
{
var client = MongodbClient <T> .MongodbInfoClient(host);
client.InsertOne(t);
return(1);
}
catch
{
return(0);
}
}
/// <summary>
/// 异步批量插入
/// </summary>
/// <param name="host">mongodb连接信息</param>
/// <param name="t">实体集合</param>
/// <returns></returns>
public static async Task <int> InsertManyAsync(MongodbHost host, List <T> t)
{
try
{
var client = MongodbClient <T> .MongodbInfoClient(host);
await client.InsertManyAsync(t);
return(1);
}
catch
{
return(0);
}
}
/// <summary>
/// 删除一条数据
/// </summary>
/// <param name="host">mongodb连接信息</param>
/// <param name="id">objectId</param>
/// <returns></returns>
public static DeleteResult Delete(MongodbHost host, string id)
{
try
{
var client = MongodbClient <T> .MongodbInfoClient(host);
FilterDefinition <T> filter = Builders <T> .Filter.Eq("_id", new ObjectId(id));
return(client.DeleteOne(filter));
}
catch (Exception ex)
{
throw ex;
}
}
/// <summary>
/// 异步删除一条数据
/// </summary>
/// <param name="host">mongodb连接信息</param>
/// <param name="id">objectId</param>
/// <returns></returns>
public static async Task <DeleteResult> DeleteAsync(MongodbHost host, string id)
{
try
{
var client = MongodbClient <T> .MongodbInfoClient(host);
//修改条件
FilterDefinition <T> filter = Builders <T> .Filter.Eq("_id", new ObjectId(id));
return(await client.DeleteOneAsync(filter));
}
catch (Exception ex)
{
throw ex;
}
}
/// <summary>
/// 分页查询集合
/// </summary>
/// <param name="host">mongodb连接信息</param>
/// <param name="filter">查询条件</param>
/// <param name="pageIndex">当前页</param>
/// <param name="pageSize">页容量</param>
/// <param name="count">总条数</param>
/// <param name="field">要查询的字段,不写时查询全部</param>
/// <param name="sort">要排序的字段</param>
/// <returns></returns>
public static List <T> FindListByPage(MongodbHost host, FilterDefinition <T> filter, int pageIndex, int pageSize, out long count, string[] field = null, SortDefinition <T> sort = null)
{
try
{
var client = MongodbClient <T> .MongodbInfoClient(host);
count = client.CountDocuments(filter);
//不指定查询字段
if (field == null || field.Length == 0)
{
if (sort == null)
{
return(client.Find(filter).Skip((pageIndex - 1) * pageSize).Limit(pageSize).ToList());
}
//进行排序
return(client.Find(filter).Sort(sort).Skip((pageIndex - 1) * pageSize).Limit(pageSize).ToList());
}
//制定查询字段
var fieldList = new List <ProjectionDefinition <T> >();
for (int i = 0; i < field.Length; i++)
{
fieldList.Add(Builders <T> .Projection.Include(field[i].ToString()));
}
var projection = Builders <T> .Projection.Combine(fieldList);
fieldList?.Clear();
//不排序
if (sort == null)
{
return(client.Find(filter).Project <T>(projection).Skip((pageIndex - 1) * pageSize).Limit(pageSize).ToList());
}
//排序查询
return(client.Find(filter).Sort(sort).Project <T>(projection).Skip((pageIndex - 1) * pageSize).Limit(pageSize).ToList());
}
catch (Exception ex)
{
throw ex;
}
}
/// <summary>
/// 异步查询集合
/// </summary>
/// <param name="host">mongodb连接信息</param>
/// <param name="filter">查询条件</param>
/// <param name="field">要查询的字段,不写时查询全部</param>
/// <param name="sort">要排序的字段</param>
/// <returns></returns>
public static async Task <List <T> > FindListAsync(MongodbHost host, FilterDefinition <T> filter, string[] field = null, SortDefinition <T> sort = null)
{
try
{
var client = MongodbClient <T> .MongodbInfoClient(host);
//不指定查询字段
if (field == null || field.Length == 0)
{
if (sort == null)
{
return(await client.Find(filter).ToListAsync());
}
return(await client.Find(filter).Sort(sort).ToListAsync());
}
//制定查询字段
var fieldList = new List <ProjectionDefinition <T> >();
for (int i = 0; i < field.Length; i++)
{
fieldList.Add(Builders <T> .Projection.Include(field[i].ToString()));
}
var projection = Builders <T> .Projection.Combine(fieldList);
fieldList?.Clear();
if (sort == null)
{
return(await client.Find(filter).Project <T>(projection).ToListAsync());
}
//排序查询
return(await client.Find(filter).Sort(sort).Project <T>(projection).ToListAsync());
}
catch (Exception ex)
{
throw ex;
}
}