FluentData，它是一个轻量级框架，关注性能和易用性。
下载地址：FlunenData.Model
利用T4模板，【MultipleOutputHelper.ttinclude】批量生成多文件
基本语法：
1. 初始化：获取MultipleOutputHelper.ttinclude文件模板 在T4模板导入
//导入MultipleOutputHelper.ttinclude文件 路径 <#@include file="$(SolutionDir)\ORM.Model\T4\MultipleOutputHelper.ttinclude"#>
//初始化Manager对象
var manager = Manager.Create(Host, GenerationEnvironment);
2.文件块：使用代码标识区分生成的代码块的范围
manager.StartNewFile(tb_name+".cs");
//代码块
manager.EndBlock();
3.编译执行：使用Process方法，进行文件分割
manager.Process(true);
实践：
1.批量生成实体类
<#@ template debug="false" hostspecific="true" language="C#" #> <#@ assembly name="System.Data" #> <#@ assembly name="System.xml" #> <#@ import namespace="System.Collections.Generic" #> <#@ import namespace="System.Data.SqlClient" #> <#@ import namespace="System.Data" #> <#@ assembly name="System.Core" #> <#@ import namespace="System.Linq" #> // 导入MultipleOutputHelper.ttinclude文件 <#@include file="$(SolutionDir)\My.Model\T4\MultipleOutputHelper.ttinclude"#> <# string connectionString= "server=qq;database=db;uid=sa;pwd=sa;"; SqlConnection conn = new SqlConnection(connectionString); conn.Open(); string selectQuery ="SET FMTONLY ON; select * from @tableName; SET FMTONLY OFF;"; SqlCommand command = new SqlCommand(selectQuery,conn); SqlDataAdapter ad = new SqlDataAdapter(command); System.Data.DataSet ds = new DataSet(); var manager = Manager.Create(Host, GenerationEnvironment); System.Data.DataTable schema = conn.GetSchema("Tables"); foreach(System.Data.DataRow row in schema.Rows) { ds.Tables.Clear(); string tb_name= row["TABLE_NAME"].ToString(); command.CommandText = selectQuery.Replace("@tableName",row["TABLE_NAME"].ToString()); ad.FillSchema(ds, SchemaType.Mapped,tb_name); manager.StartNewFile(tb_name+".cs");#> using FluentData; using System; using System.Collections.Generic; namespace My.Model { /// <summary> /// 实体-<#=tb_name#> /// </summary> public partial class <#=tb_name#> { <# PushIndent(" "); foreach (DataColumn dc in ds.Tables[0].Columns) { WriteLine("public " + dc.DataType.Name+ (dc.AllowDBNull && dc.DataType.Name.ToLower() != "string" ? "? ": " ") + dc.ColumnName + " { get; set; }"); } PopIndent(); #> } } <# manager.EndBlock(); } conn.Close(); manager.Process(true); #>
2.批量生成基础业务逻辑
<#@ template debug="false" hostspecific="true" language="C#" #> <#@ assembly name="System.Data" #> <#@ assembly name="System.xml" #> <#@ import namespace="System.Collections.Generic" #> <#@ import namespace="System.Data.SqlClient" #> <#@ import namespace="System.Data" #> <#@ assembly name="System.Core" #> <#@ import namespace="System.Linq" #> // 导入MultipleOutputHelper.ttinclude文件 <#@include file="$(SolutionDir)\MY.Model\T4\MultipleOutputHelper.ttinclude"#> <# string connectionString= "server=QQ;database=DB;uid=sa;pwd=sa;"; SqlConnection conn = new SqlConnection(connectionString); conn.Open(); string selectQuery ="SET FMTONLY ON; select * from @tableName; SET FMTONLY OFF;"; SqlCommand command = new SqlCommand(selectQuery,conn); SqlDataAdapter ad = new SqlDataAdapter(command); System.Data.DataSet ds = new DataSet(); var manager = Manager.Create(Host, GenerationEnvironment); System.Data.DataTable schema = conn.GetSchema("Tables"); foreach(System.Data.DataRow row in schema.Rows) { ds.Tables.Clear(); string tb_name= row["TABLE_NAME"].ToString(); command.CommandText = selectQuery.Replace("@tableName",row["TABLE_NAME"].ToString()); ad.FillSchema(ds, SchemaType.Mapped,tb_name); manager.StartNewFile(tb_name+"Action.cs");#> using System; using System.Collections.Generic; using MY.Model; using FluentData; namespace MY.BLL { /// <summary> /// <#=tb_name#> 操作类 /// </summary> public partial class <#=tb_name#>Action {<# string fkQuery = " SELECT f.name AS ForeignKey,"; fkQuery += " OBJECT_NAME(f.parent_object_id) AS TableName, "; fkQuery += " COL_NAME(fc.parent_object_id, fc.parent_column_id) AS ColumnName, "; fkQuery += " OBJECT_NAME (f.referenced_object_id) AS ReferenceTableName, "; fkQuery += " COL_NAME(fc.referenced_object_id, fc.referenced_column_id) AS ReferenceColumnName "; fkQuery += " FROM "; fkQuery += " sys.foreign_keys AS f "; fkQuery += " INNER JOIN sys.foreign_key_columns AS fc ON f.OBJECT_ID = fc.constraint_object_id "; fkQuery += " where OBJECT_NAME(f.parent_object_id) = '" +tb_name +"'"; List<string> fkColumnNames = new List<string>(); Dictionary<string, string> parentTables = new Dictionary<string, string>(); SqlCommand command2 = new SqlCommand(fkQuery,conn); using(var dr = command2.ExecuteReader()) { while(dr.Read()) { fkColumnNames.Add(dr["ColumnName"].ToString()); parentTables.Add(dr["ColumnName"].ToString(), dr["ReferenceTableName"].ToString()); } dr.Close(); } List<DataColumn> fkColumns = new List<DataColumn>(); foreach(string fkColumnName in fkColumnNames) { foreach (DataColumn dc in ds.Tables[0].Columns) { if(dc.ColumnName == fkColumnName) fkColumns.Add(dc); } } List<string> primaryKeyParamsWithTypes = new List<string>(); List<string> primaryKeyParams = new List<string>(); List<string> whereItems = new List<string>(); List<string> automapItems = new List<string>(); foreach(DataColumn pk in ds.Tables[0].PrimaryKey) { primaryKeyParamsWithTypes.Add(string.Format("{0} {1}", pk.DataType.Name, this.ToCamelCase(pk.ColumnName))); primaryKeyParams.Add(pk.ColumnName); whereItems.Add(string.Format("{0} = @{1}", pk.ColumnName, pk.ColumnName.ToLower())); automapItems.Add(string.Format("x.{0}", pk.ColumnName)); } string updateAutomap = string.Empty; if(automapItems.Count > 0){ if(automapItems.Count > 1) updateAutomap = "new { " + string.Join(", ", automapItems.ToArray()) + " }"; else updateAutomap = automapItems[0]; } #> public static <#=tb_name#> Select(<#=string.Join(", ", primaryKeyParamsWithTypes.ToArray())#>) { using(var context = db.Context()) { return context.Sql(" SELECT * FROM <#=tb_name#> WHERE <#=string.Join(" AND ", whereItems.ToArray())#> ") <#foreach(string pkp in primaryKeyParams) { WriteLine(".Parameter(\"" + pkp.ToLower() + "\", " + this.ToCamelCase(pkp) + ")"); } #> .QuerySingle<<#=tb_name#>>(); } } public static List<<#=tb_name#>> SelectAll() { return SelectAll(string.Empty); } public static List<<#=tb_name#>> SelectAll(string sortExpression) { return SelectAll(0, 0, sortExpression); } public static List<<#=tb_name#>> SelectAll(int startRowIndex, int maximumRows, string sortExpression) { using (var context = db.Context()) { var select = context.Select<<#=tb_name#>>(" * ") .From(" <#=tb_name#> "); if (maximumRows > 0) { if (startRowIndex == 0) startRowIndex = 1; select.Paging(startRowIndex, maximumRows); } if (!string.IsNullOrEmpty(sortExpression)) select.OrderBy(sortExpression); return select.QueryMany(); } } public static int CountAll() { using (var context = db.Context()) { return context.Sql(" SELECT COUNT(*) FROM <#=tb_name#> ") .QuerySingle<int>(); } } <# foreach(DataColumn dc in fkColumns) { #> public static List<<#=tb_name#>> SelectBy<#=parentTables[dc.ColumnName]#>(<#=dc.DataType.Name#> <#=this.ToCamelCase(dc.ColumnName)#>) { return SelectBy<#=parentTables[dc.ColumnName]#>(<#=this.ToCamelCase(dc.ColumnName)#>, string.Empty); } public static List<<#=tb_name#>> SelectBy<#=parentTables[dc.ColumnName]#>(<#=dc.DataType.Name#> <#=this.ToCamelCase(dc.ColumnName)#>, string sortExpression) { return SelectBy<#=parentTables[dc.ColumnName]#>(<#=this.ToCamelCase(dc.ColumnName)#>, 0, 0, sortExpression); } public static List<<#=tb_name#>> SelectBy<#=parentTables[dc.ColumnName]#>(<#=dc.DataType.Name#> <#=this.ToCamelCase(dc.ColumnName)#>, int startRowIndex, int maximumRows, string sortExpression) { using (var context = db.Context()) { var select = context.Select<<#=tb_name#>>(" * ") .From(" <#=tb_name#> ") .Where(" <#=dc.ColumnName#> = @<#=dc.ColumnName.ToLower()#> ") .Parameter("<#=dc.ColumnName.ToLower()#>", <#=this.ToCamelCase(dc.ColumnName)#>); if (maximumRows > 0) { if (startRowIndex == 0) startRowIndex = 1; select.Paging(startRowIndex, maximumRows); } if (!string.IsNullOrEmpty(sortExpression)) select.OrderBy(sortExpression); return select.QueryMany(); } } public static int CountBy<#=parentTables[dc.ColumnName]#>(<#=dc.DataType.Name#> <#=this.ToCamelCase(dc.ColumnName)#>) { using (var context = db.Context()) { return context.Sql(" SELECT COUNT(*) FROM <#=tb_name#> WHERE <#=dc.ColumnName#> = @<#=dc.ColumnName.ToLower()#>") .Parameter("<#=dc.ColumnName.ToLower()#>", <#=this.ToCamelCase(dc.ColumnName)#>) .QuerySingle<int>(); } } <#}#> <#if(ds.Tables[0].PrimaryKey != null && ds.Tables[0].PrimaryKey.Length == 1 && ds.Tables[0].PrimaryKey[0].AutoIncrement) {#> public static bool Insert(<#=tb_name#> <#=this.ToCamelCase(tb_name)#>) { using (var context = db.Context()) { int id = context.Insert<<#=tb_name#>>("<#=tb_name#>", <#=this.ToCamelCase(tb_name)#>) .AutoMap(x => x.<#=primaryKeyParams[0]#>) .ExecuteReturnLastId<int>(); <#=this.ToCamelCase(tb_name)#>.<#=primaryKeyParams[0]#> = id; return id > 0; } } <# } else { #> public static bool Insert(<#=tb_name#> <#=this.ToCamelCase(tb_name)#>) { using (var context =db.Context()) { return context.Insert<<#=tb_name#>>("<#=tb_name#>", <#=this.ToCamelCase(tb_name)#>) .Execute() > 0; } } <#}#> public static bool Update(<#=tb_name#> <#=this.ToCamelCase(tb_name)#>) { using (var context = db.Context()) { return context.Update<<#=tb_name#>>("<#=tb_name#>", <#=this.ToCamelCase(tb_name)#>) .AutoMap(x => <#=updateAutomap#>) <#foreach(string pkp in primaryKeyParams){#> .Where("<#=pkp#>", <#=this.ToCamelCase(tb_name)#>.<#=pkp#>) <#}#> .Execute() > 0; } } public static bool Delete(<#=tb_name#> <#=this.ToCamelCase(tb_name)#>) { return Delete(<#=string.Join(", ", primaryKeyParams.Select(x=> this.ToCamelCase(tb_name) + "." + x).ToArray())#>); } public static bool Delete(<#=string.Join(", ", primaryKeyParamsWithTypes.ToArray())#>) { using (var context = db.Context()) { return context.Sql(" DELETE FROM Product WHERE <#=string.Join(" AND ", whereItems.ToArray())#> ") <#foreach(string pkp in primaryKeyParams) { WriteLine(".Parameter(\"" + pkp.ToLower() + "\", " + this.ToCamelCase(pkp) + ")"); }#> .Execute() > 0; } } } } <# manager.EndBlock(); } conn.Close(); manager.Process(true); #> <#+ public string ToCamelCase(string value) { if(string.IsNullOrEmpty(value)) return string.Empty; string firstLetter = value.Substring(0, 1); string rest = value.Substring(1, value.Length - 1); return firstLetter.ToLower() + rest; } #>
CTRL+S 自动生成
下载地址：FlunenData.Model
完成！即可快速开发了！
本文转自曾祥展博客园博客，原文链接：http://www.cnblogs.com/zengxiangzhan/p/3250105.html，如需转载请自行联系原作者