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using
System;using
System.Collections.Generic;using
System.Data.Entity;using
System.Linq;using
System.Linq.Expressions;using
System.Text;using
SnsDB;using
EntityFramework.Extensions;using
EntityFramework.Reflection;using
System.Data.SqlClient;using
System.Transactions;namespace
SnsDAL{ public
partial class Repository { /// <summary> /// 创建一条记录 /// </summary> /// <typeparam name="T"></typeparam> /// <param name="model"></param> /// <returns></returns> public
int Create<T>(T model) where
T : class { int
Result = 0; using
(SnsDB_Intermodal db = new
SnsDB_Intermodal()) { db.Set<T>().Add(model); db.Configuration.ValidateOnSaveEnabled = false; Result = db.SaveChanges(); db.Configuration.ValidateOnSaveEnabled = true; return
Result; } } /// <summary> /// 根据主键修改实体的全部信息 /// </summary> /// <typeparam name="T"></typeparam> /// <param name="model"></param> /// <returns></returns> public
int Update<T>(T model) where
T : class { int
Result = 0; using
(SnsDB_Intermodal db = new
SnsDB_Intermodal()) { if
(db.Entry<T>(model).State == EntityState.Detached) { db.Set<T>().Attach(model); db.Entry<T>(model).State = EntityState.Modified; } db.Configuration.ValidateOnSaveEnabled = false; Result = db.SaveChanges(); db.Configuration.ValidateOnSaveEnabled = true; return
Result; } } /// <summary> /// 只删除一条记录 /// </summary> /// <typeparam name="T"></typeparam> /// <param name="ids"></param> public
int Delete<T>(Expression<Func<T, bool>> express) where
T : class { using
(SnsDB_Intermodal db = new
SnsDB_Intermodal()) { T model = db.Set<T>().SingleOrDefault(express); db.Set<T>().Remove(model); return
db.SaveChanges(); } } /// <summary> /// 根据条件获取一个实体 /// </summary> /// <typeparam name="T"></typeparam> /// <param name="express"></param> /// <returns></returns> public
T GetModel<T>(Expression<Func<T, bool>> express) where
T : class { using
(SnsDB_Intermodal db = new
SnsDB_Intermodal()) { T model = db.Set<T>().SingleOrDefault(express); return
model; } } /// <summary> /// 根据条件获取列表 /// </summary> /// <typeparam name="T"></typeparam> /// <param name="express"></param> /// <returns></returns> public
IEnumerable<T> GetList<T>(Expression<Func<T, bool>> express) where
T : class { using
(SnsDB_Intermodal db = new
SnsDB_Intermodal()) { return
db.Set<T>().Where(express).ToList(); } } /// <summary> /// 获取列表 /// </summary> /// <typeparam name="T"></typeparam> /// <returns></returns> public
IEnumerable<T> GetList<T>() where
T : class { using
(SnsDB_Intermodal db = new
SnsDB_Intermodal()) { return
db.Set<T>().ToList(); } } /// <summary> /// 批量删除 /// </summary> /// <typeparam name="T"></typeparam> /// <param name="express"></param> /// <returns></returns> public
int DeleteRange<T>(Expression<Func<T, bool>> express) where
T : class { int
Result = 0; using
(SnsDB_Intermodal db = new
SnsDB_Intermodal()) { db.Set<T>().Where(express).Delete(); db.Configuration.ValidateOnSaveEnabled = false; Result = db.SaveChanges(); db.Configuration.ValidateOnSaveEnabled = true; } return
Result; } /// <summary> /// 批量添加 /// </summary> /// <typeparam name="T"></typeparam> /// <param name="List"></param> /// <returns></returns> public
int AddRange<T>(IList<T> List) where
T : class { int
Result = 0; using
(SnsDB_Intermodal db = new
SnsDB_Intermodal()) { db.Set<T>().AddRange(List); db.Configuration.ValidateOnSaveEnabled = false; Result = db.SaveChanges(); db.Configuration.ValidateOnSaveEnabled = true; } return
Result; } /// <summary> /// 批量修改 例:xx.update(p=>p.id==1,p=>new xx{p.name="修改"}); /// </summary> /// <typeparam name="T"></typeparam> /// <param name="where">条件</param> /// <param name="updateExpression">修改的内容</param> /// <returns></returns> public
int UpdateRange<T>(Expression<Func<T, bool>> where, Expression<Func<T, T>> updateExpression) where
T : class { int
Result = 0; using
(SnsDB_Intermodal db = new
SnsDB_Intermodal()) { using
(TransactionScope Transaction = new
TransactionScope()) { db.Configuration.ValidateOnSaveEnabled = false; db.Set<T>().Update(where, updateExpression); db.Configuration.ValidateOnSaveEnabled = true; Transaction.Complete(); Result = 1; } } return
Result; } /// <summary> /// 执行一条sql返回list /// </summary> /// <typeparam name="T">一般为ViewModel</typeparam> /// <param name="strsql"></param> /// <returns></returns> public
IEnumerable<T> GetList<T>(string
strsql) where
T:class { using
(SnsDB_Intermodal db = new
SnsDB_Intermodal()) { return
db.Database.SqlQuery<T>(strsql); } } /// <summary> /// 执行一条sql返回list /// </summary> /// <typeparam name="T"></typeparam> /// <param name="strsql">一般为ViewModel</param> /// <param name="paras">参数</param> /// <returns></returns> public
IEnumerable<T> GetList<T>(string
strsql, SqlParameter[] paras) where
T : class { using
(SnsDB_Intermodal db = new
SnsDB_Intermodal()) { return
db.Database.SqlQuery<T>(strsql, paras); } } /// <summary> /// 执行一条sql返回一个对象 /// </summary> /// <typeparam name="T"></typeparam> /// <param name="strsql"></param> /// <returns></returns> public
T GetList<T>(string
strsql) where
T : class { using
(SnsDB_Intermodal db = new
SnsDB_Intermodal()) { return
db.Database.SqlQuery<T>(strsql).Cast<T>().First(); } } /// <summary> /// 执行一条sql返回一个对象 /// </summary> /// <typeparam name="T"></typeparam> /// <param name="strsql"></param> /// <param name="paras">参数</param> /// <returns></returns> public
T GetList<T>(string
strsql,SqlParameter[] paras) where
T : class { using
(SnsDB_Intermodal db = new
SnsDB_Intermodal()) { return
db.Database.SqlQuery<T>(strsql,paras).Cast<T>().First(); } } /// <summary> /// 执行一条sql，一般为添加或修改或删除操作 /// </summary> /// <param name="strsql"></param> /// <returns>受影响的行数</returns> public
int ExecuteSqlCommand(string
strsql) { using
(SnsDB_Intermodal db = new
SnsDB_Intermodal()) { return
db.Database.ExecuteSqlCommand(strsql); } } /// <summary> /// 执行一条sql，一般为添加或修改或删除操作 /// </summary> /// <param name="strsql"></param> /// <param name="paras">参数</param> /// <returns></returns> public
int ExecuteSqlCommand(string
strsql,SqlParameter[] paras) { using
(SnsDB_Intermodal db = new
SnsDB_Intermodal()) { return
db.Database.ExecuteSqlCommand(strsql,paras); } } }} |
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原文地址：http://www.cnblogs.com/kezhiping/p/3765692.html
