public ResolveExpression ( |
||
re | 当前解析对象 | |
exp | 要解析的表达式 | |
db | SqlSugarClient | 数据库访问对象 |
return | void |
protected void Page_Load(object sender, EventArgs e) { PerformanceTest pt = new PerformanceTest(); pt.SetCount(10000);//设置循环次数 Models.Student ss = new Models.Student() { id=1 }; pt.Execute(i => { ResolveExpress r = new ResolveExpress(); Expression<Func<Models.InsertTest, bool>> func = x => x.id>ss.id; r.ResolveExpression(r,func); }, m => { }, "lambda"); //输出测试页面 GridView gv = new GridView(); gv.DataSource = pt.GetChartSource(); gv.DataBind(); Form.Controls.Add(gv); }
/// <summary> /// 假删除,根据表达示 /// 使用说明:: /// FalseDelete《T》(new int[]{1,2,3})或者Delete《T》(3) /// </summary> /// <param name="field">更新删除状态字段</param> /// <param name="expression">筛选表达示</param> public bool FalseDelete <T>(string field, Expression <Func <T, bool> > expression) { Type type = typeof(T); string typeName = type.Name; typeName = GetTableNameByClassType(typeName); //属性缓存 string cachePropertiesKey = "db." + typeName + ".GetProperties"; var cachePropertiesManager = CacheManager <PropertyInfo[]> .GetInstance(); PropertyInfo[] props = null; if (cachePropertiesManager.ContainsKey(cachePropertiesKey)) { props = cachePropertiesManager[cachePropertiesKey]; } else { props = type.GetProperties(); cachePropertiesManager.Add(cachePropertiesKey, props, cachePropertiesManager.Day); } bool isSuccess = false; ResolveExpress re = new ResolveExpress(); re.ResolveExpression(re, expression); string sql = string.Format("UPDATE {0} SET {1}=1 WHERE 1=1 {2}", typeName, field, re.SqlWhere); int deleteRowCount = ExecuteCommand(sql, re.Paras.ToArray()); isSuccess = deleteRowCount > 0; return(isSuccess); }
/// <summary> /// 更新 /// 注意:rowObj为T类型将更新该实体的非主键所有列,如果rowObj类型为匿名类将更新指定列 /// 使用说明:sqlSugar.Update《T》(rowObj,whereObj); /// </summary> /// <typeparam name="T"></typeparam> /// <param name="rowObj">new T(){name="张三",sex="男"}或者new {name="张三",sex="男"}</param> /// <param name="expression">it.id=100</param> /// <returns></returns> public bool Update <T>(object rowObj, Expression <Func <T, bool> > expression) where T : class { if (rowObj == null) { throw new ArgumentNullException("SqlSugarClient.Update.rowObj"); } if (expression == null) { throw new ArgumentNullException("SqlSugarClient.Update.expression"); } Type type = typeof(T); string typeName = type.Name; typeName = GetTableNameByClassType(typeName); StringBuilder sbSql = new StringBuilder(string.Format(" UPDATE {0} SET ", typeName)); var rows = SqlSugarTool.GetParameters(rowObj); string pkName = SqlSugarTool.GetPrimaryKeyByTableName(this, typeName); foreach (var r in rows) { if (pkName == r.ParameterName.TrimStart('@')) { if (rowObj.GetType() == type) { continue; } } sbSql.Append(string.Format(" [{0}] =@{0} ,", r.ParameterName.TrimStart('@'))); } sbSql.Remove(sbSql.Length - 1, 1); sbSql.Append(" WHERE 1=1 "); ResolveExpress re = new ResolveExpress(); re.ResolveExpression(re, expression); sbSql.Append(re.SqlWhere);; List <SqlParameter> parsList = new List <SqlParameter>(); parsList.AddRange(re.Paras); var pars = rows; if (pars != null) { foreach (var par in pars) { if (par.SqlDbType == SqlDbType.Udt) { par.UdtTypeName = "HIERARCHYID"; } parsList.Add(par); } } var updateRowCount = ExecuteCommand(sbSql.ToString(), parsList.ToArray()); return(updateRowCount > 0); }
/// <summary> /// 条件筛选 /// </summary> /// <typeparam name="T"></typeparam> /// <param name="queryable"></param> /// <param name="expression"></param> /// <returns></returns> public static SqlSugar.Queryable <T> Where <T>(this SqlSugar.Queryable <T> queryable, Expression <Func <T, bool> > expression) { var type = queryable.Type; ResolveExpress re = new ResolveExpress(); re.ResolveExpression(re, expression); queryable.Params.AddRange(re.Paras); queryable.Where.Add(re.SqlWhere); return(queryable); }
/// <summary> /// 删除,根据表达示 /// 使用说明: /// Delete《T》(it=>it.id=100) 或者Delete《T》(3) /// </summary> /// <param name="expression">筛选表达示</param> public bool Delete <T>(Expression <Func <T, bool> > expression) { Type type = typeof(T); ResolveExpress re = new ResolveExpress(); re.ResolveExpression(re, expression); string sql = string.Format("DELETE FROM {0} WHERE 1=1 {1}", type.Name, re.SqlWhere); bool isSuccess = ExecuteCommand(sql, re.Paras.ToArray()) > 0; return(isSuccess); }
/// <summary> /// 返回序列的唯一元素;如果该序列并非恰好包含一个元素,则会引发异常。 /// </summary> /// <typeparam name="T"></typeparam> /// <param name="queryable"></param> /// <param name="expression"></param> /// <returns></returns> public static bool Any <T>(this Queryable <T> queryable, Expression <Func <T, bool> > expression) { var type = queryable.Type; queryable.WhereIndex = queryable.WhereIndex + 100; ResolveExpress re = new ResolveExpress(queryable.WhereIndex); re.ResolveExpression(re, expression); queryable.Where.Add(re.SqlWhere); queryable.Params.AddRange(re.Paras); return(queryable.Count() > 0); }
/// <summary> /// 返回序列中的第一个元素,如果序列为NULL返回default(T) /// </summary> /// <typeparam name="T"></typeparam> /// <param name="queryable"></param> /// <param name="expression"></param> /// <returns></returns> public static T FirstOrDefault <T>(this Queryable <T> queryable, Expression <Func <T, bool> > expression) { var type = queryable.Type; queryable.WhereIndex = queryable.WhereIndex + 100; ResolveExpress re = new ResolveExpress(queryable.WhereIndex); re.ResolveExpression(re, expression); queryable.Where.Add(re.SqlWhere); queryable.Params.AddRange(re.Paras); return(FirstOrDefault <T>(queryable)); }
/// <summary> /// 返回序列的唯一元素;如果该序列并非恰好包含一个元素,否则返回null。 /// </summary> /// <typeparam name="T">表实体类型</typeparam> /// <param name="queryable">查询对象</param> /// <param name="expression">表达式条件</param> /// <returns>T</returns> public static T SingleOrDefault <T>(this Queryable <T> queryable, Expression <Func <T, bool> > expression) { var type = queryable.Type; queryable.WhereIndex = queryable.WhereIndex + 100; ResolveExpress re = new ResolveExpress(queryable.WhereIndex); re.ResolveExpression(re, expression, queryable.DB); queryable.WhereValue.Add(re.SqlWhere); queryable.Params.AddRange(re.Paras); return(queryable.ToList().SingleOrDefault()); }
/// <summary> /// 条件筛选 /// </summary> /// <typeparam name="T"></typeparam> /// <param name="queryable"></param> /// <param name="expression"></param> /// <returns></returns> public static Queryable <T> Where <T, T2, T3>(this Queryable <T> queryable, Expression <Func <T, T2, T3, object> > expression) { var type = queryable.Type; queryable.WhereIndex = queryable.WhereIndex + 100; ResolveExpress re = new ResolveExpress(queryable.WhereIndex); re.Type = ResolveExpressType.nT; re.ResolveExpression(re, expression); queryable.Params.AddRange(re.Paras); queryable.Where.Add(re.SqlWhere); return(queryable); }
/// <summary> /// 条件筛选 /// </summary> /// <typeparam name="T"></typeparam> /// <param name="queryable"></param> /// <param name="expression"></param> /// <returns></returns> public static Queryable <T> Where <T>(this Queryable <T> queryable, Expression <Func <T, bool> > expression) { var type = queryable.Type; queryable.WhereIndex = queryable.WhereIndex + 100; ResolveExpress re = new ResolveExpress(queryable.WhereIndex); if (queryable.JoinTable.IsValuable()) { re.Type = ResolveExpressType.nT; } re.ResolveExpression(re, expression); queryable.Params.AddRange(re.Paras); queryable.Where.Add(re.SqlWhere); return(queryable); }
/// <summary> /// 联表查询 /// </summary> /// <typeparam name="T">第一个表的对象</typeparam> /// <typeparam name="T2">联接表的对象</typeparam> /// <typeparam name="T3">联接表的对象</typeparam> /// <param name="queryable">查询对象</param> /// <param name="expression">条件表达式</param> /// <param name="type">Join的类型</param> /// <returns>Queryable</returns> public static Queryable <T> JoinTable <T, T2, T3>(this Queryable <T> queryable, Expression <Func <T, T2, T3, object> > expression, JoinType type = JoinType.LEFT) { queryable.DB.InitAttributes <T3>(); ResolveExpress re = new ResolveExpress(); queryable.WhereIndex = queryable.WhereIndex + 100; re.Type = ResolveExpressType.nT; var exLeftStr = Regex.Match(expression.ToString(), @"\((.+?)\).+").Groups[1].Value; var exLeftArray = exLeftStr.Split(','); var shortName1 = exLeftArray[1]; var shortName2 = exLeftArray[2]; re.ResolveExpression(re, expression, queryable.DB); string joinTypeName = type.ToString(); string joinTableName = null; if (queryable.DB._mappingTableList.IsValuable()) { //别名表 if (queryable.DB._mappingTableList.IsValuable()) { string name = typeof(T3).Name; if (queryable.DB._mappingTableList.Any(it => it.Key == name)) { joinTableName = queryable.DB._mappingTableList.First(it => it.Key == name).Value; } } } if (joinTableName.IsNullOrEmpty()) { joinTableName = typeof(T3).Name; } string joinStr = string.Format(" {0} JOIN {1} {2} ON {3} ", /*0*/ queryable.JoinTableValue.Count == 0 ? (" " + shortName1 + " " + joinTypeName) : joinTypeName.ToString(), /*1*/ joinTableName.GetTranslationSqlName(), /*2*/ shortName2, /*3*/ re.SqlWhere.Trim().TrimStart('A').TrimStart('N').TrimStart('D') ); queryable.JoinTableValue.Add(joinStr); queryable.Params.AddRange(re.Paras); return(queryable); }
/// <summary> /// 更新 /// 注意:rowObj为T类型将更新该实体的非主键所有列,如果rowObj类型为匿名类将更新指定列 /// 使用说明:sqlSugar.Update《T》(rowObj,whereObj); /// </summary> /// <typeparam name="T"></typeparam> /// <param name="rowObj">new T(){name="张三",sex="男"}或者new {name="张三",sex="男"}</param> /// <param name="expression">new {id=100}</param> /// <returns></returns> public bool Update <T>(object rowObj, Expression <Func <T, bool> > expression) where T : class { if (rowObj == null) { throw new ArgumentNullException("SqlSugarClient.Update.rowObj"); } if (expression == null) { throw new ArgumentNullException("SqlSugarClient.Update.expression"); } Type type = typeof(T); StringBuilder sbSql = new StringBuilder(string.Format(" UPDATE {0} SET ", type.Name)); Dictionary <string, string> rows = SqlSugarTool.GetObjectToDictionary(rowObj); string pkName = SqlSugarTool.GetPrimaryKeyByTableName(this, type.Name); foreach (var r in rows) { if (pkName == r.Key) { if (rowObj.GetType() == type) { continue; } } sbSql.Append(string.Format(" {0} =@{0} ,", r.Key)); } sbSql.Remove(sbSql.Length - 1, 1); sbSql.Append(" WHERE 1=1 "); ResolveExpress re = new ResolveExpress(); re.ResolveExpression(re, expression); sbSql.Append(re.SqlWhere);; List <SqlParameter> parsList = new List <SqlParameter>(); parsList.AddRange(re.Paras); parsList.AddRange(rows.Select(c => new SqlParameter("@" + c.Key, c.Value))); var updateRowCount = ExecuteCommand(sbSql.ToString(), parsList.ToArray()); return(updateRowCount > 0); }
/// <summary> /// 联表查询 /// </summary> /// <typeparam name="T">第一个表的对象</typeparam> /// <typeparam name="T2">联接的表对象</typeparam> /// <param name="queryable"></param> /// <param name="expression">表达示</param> /// <param name="type"></param> /// <returns></returns> public static Queryable <T> JoinTable <T, T2, T3>(this Queryable <T> queryable, Expression <Func <T, T2, T3, object> > expression, JoinType type = JoinType.LEFT) { ResolveExpress re = new ResolveExpress(); queryable.WhereIndex = queryable.WhereIndex + 100; re.Type = ResolveExpressType.nT; var exLeftStr = Regex.Match(expression.ToString(), @"\((.+?)\).+").Groups[1].Value; var exLeftArray = exLeftStr.Split(','); var shortName1 = exLeftArray[1]; var shortName2 = exLeftArray[2]; re.ResolveExpression(re, expression); string joinTableName = type.ToString(); string joinStr = string.Format(" {0} JOIN {1} {2} ON {3} ", /*0*/ queryable.JoinTable.Count == 0 ? (" " + shortName1 + " " + joinTableName) : joinTableName.ToString(), /*1*/ typeof(T3).Name, /*2*/ shortName2, /*3*/ re.SqlWhere.Trim().TrimStart('A').TrimStart('N').TrimStart('D') ); queryable.JoinTable.Add(joinStr); queryable.Params.AddRange(re.Paras); return(queryable); }
/// <summary> /// 更新 /// 注意:rowObj为T类型将更新该实体的非主键所有列,如果rowObj类型为匿名类将更新指定列 /// 使用说明:sqlSugar.Update《T》(rowObj,whereObj); /// </summary> /// <typeparam name="T"></typeparam> /// <param name="rowObj">new T(){name="张三",sex="男"}或者new {name="张三",sex="男"}</param> /// <param name="expression">it.id=100</param> /// <returns></returns> public bool Update <T>(object rowObj, Expression <Func <T, bool> > expression) where T : class { if (rowObj == null) { throw new ArgumentNullException("SqlSugarClient.Update.rowObj"); } if (expression == null) { throw new ArgumentNullException("SqlSugarClient.Update.expression"); } Type type = typeof(T); string typeName = type.Name; typeName = GetTableNameByClassType(typeName); var rows = SqlSugarTool.GetParameters(rowObj); //sql语句缓存 string cacheSqlKey = "db.update." + typeName + rows.Length; var cacheSqlManager = CacheManager <StringBuilder> .GetInstance(); string pkName = SqlSugarTool.GetPrimaryKeyByTableName(this, typeName); var identityNames = SqlSugarTool.GetIdentitiesKeyByTableName(this, typeName); ResolveExpress re = new ResolveExpress(); re.ResolveExpression(re, expression); StringBuilder sbSql = new StringBuilder(); if (cacheSqlManager.ContainsKey(cacheSqlKey)) { sbSql = cacheSqlManager[cacheSqlKey]; } else { sbSql = new StringBuilder(string.Format(" UPDATE [{0}] SET ", typeName)); foreach (var r in rows) { var name = r.ParameterName.TrimStart('@'); var isPk = pkName != null && pkName.ToLower() == name.ToLower(); var isIdentity = identityNames.Any(it => it.Value.ToLower() == name.ToLower()); var isDisableUpdateColumns = DisableUpdateColumns != null && DisableUpdateColumns.Any(it => it.ToLower() == name.ToLower()); if (isPk || isIdentity || isDisableUpdateColumns) { if (rowObj.GetType() == type) { continue; } } sbSql.Append(string.Format(" [{0}] =@{0} ,", name)); } sbSql.Remove(sbSql.Length - 1, 1); sbSql.Append(" WHERE 1=1 "); sbSql.Append(re.SqlWhere);; cacheSqlManager.Add(cacheSqlKey, sbSql, cacheSqlManager.Day); } List <SqlParameter> parsList = new List <SqlParameter>(); parsList.AddRange(re.Paras); var pars = rows; if (pars != null) { foreach (var par in pars) { if (par.SqlDbType == SqlDbType.Udt) { par.UdtTypeName = "HIERARCHYID"; } SqlSugarTool.SetParSize(par); parsList.Add(par); } } try { var updateRowCount = ExecuteCommand(sbSql.ToString(), parsList.ToArray()); return(updateRowCount > 0); } catch (Exception ex) { var cacheManager = CacheManager <string> .GetInstance(); cacheManager.RemoveAll(it => it.Contains("KeyBy")); throw new Exception("sql:" + sbSql.ToString() + "\n" + ex.Message); } }