SqlProvider.cst 数据提供者的具体实现

  1<%-- 
  2Name:
  3Author: 
  4Description: 
  5--%>
  6<%@ CodeTemplate Language="C#" ResponseEncoding="UTF-8" TargetLanguage="Text" Src="Helper.cs" Inherits="Helper" Debug="False" Description="Template description here." %>
  7<%@ Property Name="NameSpace" Type="System.String" Default="" Optional="false" Category="1.命名空间" Description="当前生成命名空间" %>
  8<%@ Property Name="DataBase" Type="SchemaExplorer.DatabaseSchema" Category="2.数据库对象"
  9    Description="数据库对象" %>
 10<%@ Property Name="ModuleName" Type="System.String" Default="" Optional="false" Category="" Description="项目名称" %>
 11
 12<%@ Assembly Name="System.Data" %>
 13<%@ Assembly Name="SchemaExplorer" %>
 14<%@ Assembly Name="CodeSmith.BaseTemplates" %>
 15<%@ Import Namespace="System.Data" %>
 16<%@ Import Namespace="SchemaExplorer" %>
 17<%@ Import Namespace="CodeSmith.BaseTemplates" %>
 18using System;
 19using System.Collections.Generic;
 20using System.Text;
 21using System.Collections.Specialized;
 22using System.Data;
 23using System.Data.SqlClient;
 24using System.Configuration.Provider;
 25using System.Web.Configuration;
 26using System.Diagnostics;
 27using System.Reflection;
 28
 29namespace <%= NameSpace%>.Providers
 30{
 31   /**//// <summary>
 32   /// 数据提供者具体实现类
 33   /// </summary>
 34   public partial class Sql<%= ModuleName%>Provider : <%= ModuleName%>Provider
 35   {
 36      系统设置#region 系统设置
 37      private string applicationName;
 38      private string connectionString;
 39      private string connectionStringName;
 40
 41
 42      /**//// <summary>
 43      /// 设置或获取数据提供者的应用程序名称。
 44      /// </summary>
 45      public override string ApplicationName
 46      {
 47         get { return applicationName; }
 48         set { applicationName = value; }
 49      }
 50
 51      /**//// <summary>
 52      /// 设置或获取数据库连接字符串名称。
 53      /// </summary>
 54      public string ConnectionStringName
 55      {
 56         get { return connectionStringName; }
 57         set { connectionStringName = value; }
 58      }
 59
 60      /**//// <summary>
 61      /// 获取数据库连接字符串
 62      /// </summary>
 63      public string ConnectionString
 64      {
 65         //TODO测试临时改动
 66         get
 67         {
 68            return connectionString;
 69         }
 70      }
 71      /**//// <summary>
 72      /// =======================
 73      /// </summary>
 74      public string conn
 75      {
 76         set { connectionString = value; }
 77      }
 78
 79
 80
 81
 82      /**//// <summary>
 83      /// 初始化数据提供者。
 84      /// </summary>
 85      /// <param name="name">数据提供者名称。</param>
 86      /// <param name="config">数据提供者配置信息。</param>
 87      public override void Initialize(string name, NameValueCollection config)
 88      {
 89         // Verify that config isn't null
 90         if (config == null)
 91            throw new ArgumentNullException("config");
 92
 93         // Assign the provider a default name if it doesn't have one
 94         if (String.IsNullOrEmpty(name))
 95            name = "<%= ModuleName%>Provider";
 96
 97         // Add a default "description" attribute to config if the
 98         // attribute doesn't exist or is empty
 99         if (string.IsNullOrEmpty(config["description"]))
100         {
101            config.Remove("description");
102            config.Add("description",
103                "SQL application user provider");
104         }
105
106         // Call the base class's Initialize method
107         base.Initialize(name, config);
108
109         // Initialize _applicationName
110         applicationName = config["applicationName"];
111
112         if (string.IsNullOrEmpty(applicationName))
113            applicationName = "/";
114
115         config.Remove("applicationName");
116
117         // Initialize _connectionString
118         string connect = config["connectionStringName"];
119
120         if (String.IsNullOrEmpty(connect))
121            throw new ProviderException
122                ("Empty or missing connectionStringName");
123
124         config.Remove("connectionStringName");
125
126         if (WebConfigurationManager.ConnectionStrings[connect] == null)
127            throw new ProviderException("Missing connection string");
128
129         connectionString = WebConfigurationManager.ConnectionStrings
130             [connect].ConnectionString;
131
132         if (String.IsNullOrEmpty(connectionString))
133            throw new ProviderException("Empty connection string");
134
135         // Throw an exception if unrecognized attributes remain
136         if (config.Count > 0)
137         {
138            string attr = config.GetKey(0);
139            if (!String.IsNullOrEmpty(attr))
140               throw new ProviderException
141                   ("Unrecognized attribute: " + attr);
142         }
143      }
144      #endregion
145<%
146    foreach(TableSchema Table in DataBase.Tables)
147    {
148%>
149
150      %#region <%
151    
152    if(Table.ExtendedProperties["Rmark"] != null)
153    {
154        Response.WriteLine(Table.ExtendedProperties["Rmark"].Value.ToString());
155    }
156    else
157    {
158        Response.WriteLine("生成时请在数据库中的扩展属性中设置key=Rmark,Value=''");
159    }%>
160
161      public override <%
162    if(!IsMorePrimary(Table))
163    {%><%= GetCSharpVariableType(Table.PrimaryKey.MemberColumns[0])%> <%
164        
165    }
166    else
167    {%>void <%
168    }
169    %>Create<%= GetClassName(Table)%>(<%= GetClassName(Table)%> <%= GetparameteryName(Table)%>)
170      {
171    <%
172        if(!IsMorePrimary(Table))
173        {%>    <%= GetCSharpVariableType(Table.PrimaryKey.MemberColumns[0])%> <%= Table.PrimaryKey.MemberColumns[0].Name%>;
174    <%
175        }
176    %>
177         SqlConnection conn = new SqlConnection(ConnectionString);
178         SqlCommand cmd = SqlHelper.PrepareCommand("<%= GetTableName(Table)%>_Create", conn, CommandType.StoredProcedure);
179        <%
180            if(!IsMorePrimary(Table))
181            {
182        %>
183         SqlHelper.MakeOutParam(cmd, "@<%= Table.PrimaryKey.MemberColumns[0].Name%>", SqlDbType.<%= GetSqlDbType(Table.PrimaryKey.MemberColumns[0])%>, <%= GetParamSize(Table.PrimaryKey.MemberColumns[0])%>);
184        <%
185            }
186            else
187            {
188                foreach(ColumnSchema column in Table.PrimaryKey.MemberColumns)
189                {
190        %>
191         SqlHelper.MakeInParam(cmd, "@<%= column.Name%>", SqlDbType.<%=GetSqlDbType(column)%>, <%=GetParamSize(column)%>, <%= GetparameteryName(Table)%>.<%= GetPropertyName(column)%>);
192        <%
193                }
194            }
195            foreach(ColumnSchema column in Table.NonPrimaryKeyColumns)
196            {
197                %>
198         SqlHelper.MakeInParam(cmd, "@<%= column.Name%>", SqlDbType.<%=GetSqlDbType(column)%>, <%=GetParamSize(column)%>, <%= GetparameteryName(Table)%>.<%= GetPropertyName(column)%>);    
199                <%
200                
201            }
202            
203        %>
204         using (conn)
205         {
206            try
207            {
208               conn.Open();
209               cmd.ExecuteNonQuery();
210            <%
211            if(!IsMorePrimary(Table))
212            {
213            %>
214               <%= Table.PrimaryKey.MemberColumns[0].Name%> = (<%= GetCSharpVariableType(Table.PrimaryKey.MemberColumns[0])%>)cmd.Parameters["@<%= Table.PrimaryKey.MemberColumns[0].Name%>"].Value;
215            <%
216            }
217            %>
218            }
219            catch (Exception ex)
220            {
221               Debug.WriteLine(ex.Message);
222               throw;
223            }
224         }
225        <%
226            if(!IsMorePrimary(Table))
227            {%>return <%= Table.PrimaryKey.MemberColumns[0].Name%>;
228            <%
229            }
230        %>
231         
232      }
233      public override void Update<%= GetClassName(Table)%>(<%= GetClassName(Table)%> <%= GetparameteryName(Table)%>)
234      {
235        SqlConnection conn = new SqlConnection(ConnectionString);
236        SqlCommand cmd = SqlHelper.PrepareCommand("<%= GetTableName(Table)%>_Update", conn, CommandType.StoredProcedure);
237<%
238    foreach(ColumnSchema column in Table.Columns)
239    {
240        %>
241        SqlHelper.MakeInParam(cmd, "@<%= column.Name%>", SqlDbType.<%=GetSqlDbType(column)%>, <%=GetParamSize(column)%>, <%= GetparameteryName(Table)%>.<%= GetPropertyName(column)%>);
242        <%
243    }
244%>
245         using (conn)
246         {
247            try
248            {
249               conn.Open();
250               cmd.ExecuteNonQuery();
251            }
252            catch (Exception ex)
253            {
254               Debug.WriteLine(ex.Message);
255               throw;
256            }
257         }
258      }
259      public override void Delete<%= GetClassName(Table)%>(<% 
260        foreach(ColumnSchema column in Table.PrimaryKey.MemberColumns)
261        {
262    %><%= GetCSharpVariableType(column)%> <%=GetFiledName(column)%><%= GetComma(column,Table.PrimaryKey.MemberColumns)%><%}%>)
263      {
264        SqlConnection conn = new SqlConnection(ConnectionString);
265        SqlCommand cmd = SqlHelper.PrepareCommand("<%= GetTableName(Table)%>_Delete", conn, CommandType.StoredProcedure);
266         <%
267            foreach(ColumnSchema column in Table.PrimaryKey.MemberColumns)
268            {
269        %>
270        SqlHelper.MakeInParam(cmd, "@<%= column.Name%>", SqlDbType.<%=GetSqlDbType(column)%>, <%=GetParamSize(column)%>, <%=GetFiledName(column)%>);<%}%>
271         using (conn)
272         {
273            try
274            {
275               conn.Open();
276               cmd.ExecuteNonQuery();
277            }
278            catch (Exception ex)
279            {
280               Debug.WriteLine(ex.Message);
281               throw;
282            }
283         }
284
285      }
286      public override <%= GetClassName(Table)%> Get<%= GetClassName(Table)%>(<% 
287        foreach(ColumnSchema column in Table.PrimaryKey.MemberColumns)
288        {
289    %><%= GetCSharpVariableType(column)%> <%=GetFiledName(column)%><%= GetComma(column,Table.PrimaryKey.MemberColumns)%><%}%>)
290      {
291        SqlConnection conn = new SqlConnection(ConnectionString);
292        SqlCommand cmd = SqlHelper.PrepareCommand("<%= GetTableName(Table)%>_Get<%= GetClassName(Table)%>", conn, CommandType.StoredProcedure);
293         <%
294            foreach(ColumnSchema column in Table.PrimaryKey.MemberColumns)
295            {
296        %>
297        SqlHelper.MakeInParam(cmd, "@<%= column.Name%>", SqlDbType.<%=GetSqlDbType(column)%>, <%=GetParamSize(column)%>, <%=GetFiledName(column)%>);<%}%>
298        <%= GetClassName(Table)%> item = null;
299
300         using (conn)
301         {
302            try
303            {
304               conn.Open();
305               using (SqlDataReader reader = cmd.ExecuteReader())
306               {
307                  if (reader.Read())
308                     item = Populate<%= GetTableName(Table)%>(reader);
309               }
310            }
311            catch (Exception ex)
312            {
313               Debug.WriteLine(ex.Message);
314               throw;
315            }
316         }
317
318         return item;
319      }
320      private <%= GetClassName(Table)%> Populate<%= GetTableName(Table)%>(IDataReader reader)
321      {
322        <%= GetClassName(Table)%> <%= GetparameteryName(Table)%> = new <%= GetClassName(Table)%>();
323        <%
324        foreach(ColumnSchema column in Table.Columns)
325        {
326        %>
327        if (reader["<%= column.Name%>"] != DBNull.Value)
328            <%= GetparameteryName(Table)%>.<%= GetPropertyName(column)%> = (<%= GetCSharpVariableType(column)%>)reader["CustomerId"];
329
330         <%}%>
331         return <%= GetparameteryName(Table)%>;
332      }
333      #endregion
334<%
335    }
336%>
337   }
338
339
340
341}
342
343<script runat="template">
344public string GetDBNullValue(ColumnSchema column)
345{
346    return "";
347}
348</script>

转载于:https://www.cnblogs.com/wubiyu/articles/807577.html