/// <summary>
/// 更新
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="predicate">条件</param>
/// <param name="lambda">实体</param>
/// <returns></returns>
public async Task <long> UpdateAsync <T>(Expression <Func <T, bool> > predicate, Expression <Func <T, T> > lambda) where T : MongoEntity
{
var coll = GetCollection <T>();
var updateDefinitionList = MongoExpression <T> .GetUpdateDefinition(lambda);
var updateDefinitionBuilder = new UpdateDefinitionBuilder <T>().Combine(updateDefinitionList);
var result = await coll.UpdateManyAsync <T>(predicate, updateDefinitionBuilder);
return(result.ModifiedCount);
}
/// <summary>
/// 更新
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="database">库</param>
/// <param name="collection">集合</param>
/// <param name="whereExpression">条件</param>
/// <param name="updateExpression"></param>
/// <returns></returns>
public long Update <T>(string database, string collection, Expression <Func <T, bool> > whereExpression, Expression <Func <T, T> > updateExpression) where T : MongoEntity
{
var coll = GetCollection <T>(database, collection);
var updateDefinitionList = MongoExpression <T> .GetUpdateDefinition(updateExpression);
var updateDefinitionBuilder = new UpdateDefinitionBuilder <T>().Combine(updateDefinitionList);
var result = coll.UpdateMany <T>(whereExpression, updateDefinitionBuilder);
return(result.ModifiedCount);
}
/// <summary>
/// 按条件查询条数
/// </summary>
/// <param name="predicate">条件</param>
/// <param name="updateExpression">更新结果</param>
/// <returns></returns>
public T GetAndUpdate <T>(Expression <Func <T, bool> > predicate, Expression <Func <T, T> > updateExpression)
{
var coll = GetCollection <T>();
var updateDefinitionList = MongoExpression <T> .GetUpdateDefinition(updateExpression);
var updateDefinitionBuilder = new UpdateDefinitionBuilder <T>().Combine(updateDefinitionList);
return(coll.FindOneAndUpdate(predicate, updateDefinitionBuilder, new FindOneAndUpdateOptions <T, T>
{
ReturnDocument = ReturnDocument.After
}));
}
/// <summary>
/// 查询出更新结果
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="database"></param>
/// <param name="collection"></param>
/// <param name="predicate"></param>
/// <param name="updateExpression"></param>
/// <returns></returns>
public T GetAndUpdate <T>(string database, string collection, Expression <Func <T, bool> > predicate, Expression <Func <T, T> > updateExpression)
{
var db = _mongoClient.GetDatabase(database);
var col = db.GetCollection <T>(collection);
var updateDefinitionList = MongoExpression <T> .GetUpdateDefinition(updateExpression);
var updateDefinitionBuilder = new UpdateDefinitionBuilder <T>().Combine(updateDefinitionList);
return(col.FindOneAndUpdate(predicate, updateDefinitionBuilder, new FindOneAndUpdateOptions <T, T>
{
ReturnDocument = ReturnDocument.After
}));
}