public interface IRepository<TEntity> where TEntity : BaseEntity
{
/// <summary>
/// EF DBContext
/// </summary>
VOLContext DbContext { get; }
ISqlDapper DapperContext { get; }
/// <summary>
/// 执行事务。将在执行的方法带入Action
/// </summary>
/// <param name="action"></param>
/// <returns></returns>
WebResponseContent DbContextBeginTransaction(Func<WebResponseContent> action);
/// <summary>
/// 通过条件查询数据
/// </summary>
/// <param name="where"></param>
/// <returns></returns>
List<TEntity> Find(Expression<Func<TEntity, bool>> where);
/// <summary>
///
/// </summary>
/// <param name="predicate"></param>
/// <param name="orderBySelector">排序字段,数据格式如:
/// orderBy = x => new Dictionary<object, bool>() {
/// { x.BalconyName,QueryOrderBy.Asc},
/// { x.TranCorpCode1,QueryOrderBy.Desc}
/// };
///
/// </param>
/// <returns></returns>
TEntity FindFirst(Expression<Func<TEntity, bool>> predicate, Expression<Func<TEntity, Dictionary<object, QueryOrderBy>>> orderBy = null);
/// <summary>
///
/// </summary>
/// <param name="predicate">where条件</param>
/// <param name="orderBy">排序字段,数据格式如:
/// orderBy = x => new Dictionary<object, bool>() {
/// { x.BalconyName,QueryOrderBy.Asc},
/// { x.TranCorpCode1,QueryOrderBy.Desc}
/// };
/// </param>
/// <returns></returns>
IQueryable<TEntity> FindAsIQueryable(Expression<Func<TEntity, bool>> predicate, Expression<Func<TEntity, Dictionary<object, QueryOrderBy>>> orderBy = null);
/// <summary>
/// 通过条件查询数据
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="predicate">查询条件</param>
/// <param name="selector">返回类型如:Find(x => x.UserName == loginInfo.userName, p => new { uname = p.UserName });</param>
/// <returns></returns>
List<T> Find<T>(Expression<Func<TEntity, bool>> predicate, Expression<Func<TEntity, T>> selector);
/// <summary>
/// 根据条件，返回查询的类
/// </summary>
/// <typeparam name="TFind"></typeparam>
/// <param name="predicate"></param>
/// <returns></returns>
List<TFind> Find<TFind>(Expression<Func<TFind, bool>> predicate) where TFind : class;
Task<TFind> FindAsyncFirst<TFind>(Expression<Func<TFind, bool>> predicate) where TFind : class;
Task<TEntity> FindAsyncFirst(Expression<Func<TEntity, bool>> predicate);
Task<List<TFind>> FindAsync<TFind>(Expression<Func<TFind, bool>> predicate) where TFind : class;
Task<TEntity> FindFirstAsync(Expression<Func<TEntity, bool>> predicate);
Task<List<TEntity>> FindAsync(Expression<Func<TEntity, bool>> predicate);
Task<List<T>> FindAsync<T>(Expression<Func<TEntity, bool>> predicate, Expression<Func<TEntity, T>> selector);
Task<T> FindFirstAsync<T>(Expression<Func<TEntity, bool>> predicate, Expression<Func<TEntity, T>> selector);
/// <summary>
/// 多条件查询
/// </summary>
/// <typeparam name="Source"></typeparam>
/// <param name="sources">要查询的多个条件的数据源</param>
/// <param name="predicate">生成的查询条件</param>
/// <returns></returns>
List<TEntity> Find<Source>(IEnumerable<Source> sources,
Func<Source, Expression<Func<TEntity, bool>>> predicate)
where Source : class;
/// <summary>
/// 多条件查询
/// </summary>
/// <typeparam name="Source"></typeparam>
/// <param name="sources">要查询的多个条件的数据源</param>
/// <param name="predicate">生成的查询条件</param>
/// <param name="selector">自定义返回结果</param>
/// <returns></returns>
List<TResult> Find<Source, TResult>(IEnumerable<Source> sources,
Func<Source, Expression<Func<TEntity, bool>>> predicate,
Expression<Func<TEntity, TResult>> selector)
where Source : class;
/// <summary>
/// 多条件查询
/// </summary>
/// <typeparam name="Source"></typeparam>
/// <param name="sources">要查询的多个条件的数据源</param>
/// <param name="predicate">生成的查询条件</param>
/// <returns></returns>
IQueryable<TEntity> FindAsIQueryable<Source>(IEnumerable<Source> sources,
Func<Source, Expression<Func<TEntity, bool>>> predicate)
where Source : class;
Task<bool> ExistsAsync(Expression<Func<TEntity, bool>> predicate);
bool Exists(Expression<Func<TEntity, bool>> predicate);
bool Exists<TExists>(Expression<Func<TExists, bool>> predicate) where TExists : class;
Task<bool> ExistsAsync<TExists>(Expression<Func<TExists, bool>> predicate) where TExists : class;
IIncludableQueryable<TEntity, TProperty> Include<TProperty>(Expression<Func<TEntity, TProperty>> incluedProperty);
/// <summary>
///
/// </summary>
/// <typeparam name="TResult"></typeparam>
/// <param name="pageIndex"></param>
/// <param name="pagesize"></param>
/// <param name="rowcount"></param>
/// <param name="predicate"></param>
/// <param name="orderBy">
/// 通过多个字段排序Expression<Func<TEntity, Dictionary<object, bool>>>
/// orderBy = x => new Dictionary<object, bool>() {
/// { x.BalconyName,QueryOrderBy.Asc},
/// { x.TranCorpCode1,QueryOrderBy.Desc}
/// };
/// <param name="selectorResult">查询返回的对象</param>
/// <returns></returns>
List<TResult> QueryByPage<TResult>(int pageIndex, int pagesize, out int rowcount, Expression<Func<TEntity, bool>> predicate, Expression<Func<TEntity, Dictionary<object, QueryOrderBy>>> orderBySelector, Expression<Func<TEntity, TResult>> selectorResult, bool returnRowCount = true);
List<TResult> QueryByPage<TResult>(int pageIndex, int pagesize, Expression<Func<TEntity, bool>> predicate, Expression<Func<TEntity, Dictionary<object, QueryOrderBy>>> orderBy, Expression<Func<TEntity, TResult>> selectorResult = null);
/// <summary>
///
/// </summary>
/// <param name="pageIndex"></param>
/// <param name="pagesize"></param>
/// <param name="rowcount"></param>
/// <param name="predicate"></param>
/// <param name="orderBy"></param>
/// /// 通过多个字段排序Expression<Func<TEntity, Dictionary<object, bool>>>
/// orderBy = x => new Dictionary<object, bool>() {
/// { x.BalconyName,QueryOrderBy.Asc},
/// { x.TranCorpCode1,QueryOrderBy.Desc}
/// };
/// <returns></returns>
List<TEntity> QueryByPage(int pageIndex, int pagesize, out int rowcount, Expression<Func<TEntity, bool>> predicate, Expression<Func<TEntity, Dictionary<object, QueryOrderBy>>> orderBy, bool returnRowCount = true);
IQueryable<TFind> IQueryablePage<TFind>(int pageIndex, int pagesize, out int rowcount, Expression<Func<TFind, bool>> predicate, Expression<Func<TEntity, Dictionary<object, QueryOrderBy>>> orderBy, bool returnRowCount = true) where TFind : class;
IQueryable<TEntity> IQueryablePage(IQueryable<TEntity> queryable, int pageIndex, int pagesize, out int rowcount, Dictionary<string, QueryOrderBy> orderBy, bool returnRowCount = true);
/// <summary>
///
/// </summary>
/// <param name="entity"></param>
/// <param name="properties">指定更新字段:x=>new {x.Name,x.Enable}</param>
/// <param name="saveChanges">是否保存</param>
/// <returns></returns>
int Update(TEntity entity, Expression<Func<TEntity, object>> properties, bool saveChanges = false);
/// <summary>
///
/// </summary>
/// <param name="entity"></param>
/// <param name="properties">指定更新字段:x=>new {x.Name,x.Enable}</param>
/// <param name="saveChanges">是否保存</param>
/// <returns></returns>
int Update<TSource>(TSource entity, Expression<Func<TSource, object>> properties, bool saveChanges = false) where TSource : class;
int Update<TSource>(TSource entity, bool saveChanges = false) where TSource : class;
int Update<TSource>(TSource entity, string[] properties, bool saveChanges = false) where TSource : class;
int UpdateRange<TSource>(IEnumerable<TSource> entities, bool saveChanges = false) where TSource : class;
/// <summary>
///
/// </summary>
/// <param name="entity"></param>
/// <param name="properties">指定更新字段:x=>new {x.Name,x.Enable}</param>
/// <param name="saveChanges">是否保存</param>
/// <returns></returns>
int UpdateRange<TSource>(IEnumerable<TSource> models, Expression<Func<TSource, object>> properties, bool saveChanges = false) where TSource : class;
int UpdateRange<TSource>(IEnumerable<TSource> entities, string[] properties, bool saveChanges = false) where TSource : class;
/// <summary>
///修改时同时对明细的添加、删除、修改
/// </summary>
/// <param name="entity"></param>
/// <param name="updateDetail">是否修改明细</param>
/// <param name="delNotExist">是否删除明细不存在的数据</param>
/// <param name="updateMainFields">主表指定修改字段</param>
/// <param name="updateDetailFields">明细指定修改字段</param>
/// <param name="saveChange">是否保存</param>
/// <returns></returns>
WebResponseContent UpdateRange<Detail>(TEntity entity,
bool updateDetail = false,
bool delNotExist = false,
Expression<Func<TEntity, object>> updateMainFields = null,
Expression<Func<Detail, object>> updateDetailFields = null,
bool saveChange = false) where Detail : class;
void Delete(TEntity model, bool saveChanges=false);
/// <summary>
///
/// </summary>
/// <param name="keys"></param>
/// <param name="delList">是否将子表的数据也删除</param>
/// <returns></returns>
int DeleteWithKeys(object[] keys, bool delList = false);
void Add(TEntity entities, bool SaveChanges = false);
void AddRange(IEnumerable<TEntity> entities, bool SaveChanges = false);
Task AddAsync(TEntity entities);
Task AddRangeAsync(IEnumerable<TEntity> entities);
void AddRange<T>(IEnumerable<T> entities, bool saveChanges = false)
where T : class;
void BulkInsert(IEnumerable<TEntity> entities, bool setOutputIdentity = false);
int SaveChanges();
Task<int> SaveChangesAsync();
int ExecuteSqlCommand(string sql, params SqlParameter[] sqlParameters);
List<TEntity> FromSql(string sql, params SqlParameter[] sqlParameters);
/// <summary>
/// 执行sql
/// 使用方式 FormattableString sql=$"select * from xx where name ={xx} and pwd={xx1} "，
/// FromSqlInterpolated内部处理sql注入的问题，直接在{xx}写对应的值即可
/// 注意：sql必须 select * 返回所有TEntity字段，
/// </summary>
/// <param name="formattableString"></param>
/// <returns></returns>
IQueryable<TEntity> FromSqlInterpolated([System.Diagnostics.CodeAnalysis.NotNull] FormattableString sql);
/// <summary>
/// 取消上下文跟踪
/// 更新报错时，请调用此方法：The instance of entity type 'XXX' cannot be tracked because another instance with the same key value for {'XX'} is already being tracked.
/// </summary>
/// <param name="entity"></param>
void Detached(TEntity entity);
void DetachedRange(IEnumerable<TEntity> entities);
}
最新发布
本文详细介绍了LINQ查询中IEnumerator<T>和IQueryable<T>的区别，解释了它们分别适用于本地数据源和远程数据源的原因。同时，还探讨了LINQtoOBJECTS与LINQtoSQL在查询处理上的不同机制。
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