/[AnywhereTS-MSSQL]/trunk/AnywhereTS.DBSupport/DBConnector.cs
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Contents of /trunk/AnywhereTS.DBSupport/DBConnector.cs

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Revision 132 - (show annotations) (download)
Sun Jul 15 03:09:38 2012 UTC (7 years, 10 months ago) by william
File size: 18316 byte(s)

1 using System;
2 using System.Collections.Generic;
3 using System.Text;
4 using System.Data.SqlClient;
5 using System.Data.Common;
6 using System.Data;
7 using System.Text.RegularExpressions;
8 using System.IO;
9
10
11 namespace AnywhereTS.DBSupport
12 {
13 public interface IDBConnector<DBParameter, DBCommand, DBConnection, DBDataAdapter> : IDisposable
14 where DBParameter : DbParameter, new()
15 where DBCommand : DbCommand, new()
16 where DBConnection : DbConnection, new()
17 where DBDataAdapter : DbDataAdapter, new()
18 {
19 bool ConnectionIsOpen { get; }
20 DBConnection CreateConnection(out Exception ErrorInfo);
21 void OpenConnection(out Exception ErrorInfo);
22 void CloseConnection(out Exception ErrorInfo);
23
24 DbDataReader ExecuteQuery(string command, List<DBParameter> Params, out Exception ErrorInfo);
25 void ExecuteNonQuery(string command, List<DBParameter> Params, out Exception ErrorInfo);
26 List<string> ExecuteColumnNamesReader(string command, List<DBParameter> Params, out Exception ErrorInfo);
27
28 //DBCommand CreateCommandInstance(string command, List<DBParameter> Params, out Exception ErrorInfo);
29 bool RunScript(string strFile, out Exception ErrorInfo);
30 }
31 public abstract class DBConnector<DBParameter, DBCommand, DBConnection, DBDataAdapter> :
32 IDBConnector<DBParameter, DBCommand, DBConnection, DBDataAdapter>
33 where DBParameter : DbParameter, new()
34 where DBCommand : DbCommand, new()
35 where DBConnection : DbConnection, new()
36 where DBDataAdapter : DbDataAdapter, new()
37 {
38
39 public DBConnector(string Server, string Instance, string Database)
40 {
41 DBServerAddress = Server;
42 DBServerInstance = Instance;
43 DBDatabase = Database;
44 using (log4net.NDC.Push(string.Format("[Server={0}] [Instance={1}] [Database={2}]", Server, Instance, Database)))
45 {
46 Logging.DatabaseLog.Debug("Creating DBConnector instance");
47 }
48 }
49
50 public static string GetConnectionString()
51 {
52 return string.Format(@"Data Source={0}\{1};Database={2};Integrated Security=SSPI", DBServerAddress, DBServerInstance, DBDatabase);
53 }
54 protected DBConnection connection;
55 #region DBServerAddress, DBServerInstance, DBDatabase
56 internal static string DBServerAddress = "";
57 internal static string DBServerInstance = "";
58 internal static string DBDatabase = "";
59 #endregion
60 #region private string SafeSqlLiteral(string inputSQL)
61 private string SafeSqlLiteral(string inputSQL) { return inputSQL.Replace("'", "''"); }
62 #endregion
63 #region IDBConnector members
64 #region public virtual bool ConnectionIsOpen
65 public virtual bool ConnectionIsOpen { get; protected set; }
66 #endregion
67 #region public virtual DBCommand CreateCommandInstance(string command, List<DBParameter> Params, out Exception ErrorInfo)
68 //public virtual DBCommand CreateCommandInstance(string command, List<DBParameter> Params, out Exception ErrorInfo)
69 //{
70 // ErrorInfo = null;
71 // try
72 // {
73 // command = this.SafeSqlLiteral(command);
74 // DBCommand sqlComm = new DBCommand();
75 // sqlComm.CommandText = command;
76 // sqlComm.Connection = connection;
77 // foreach (DBParameter p in Params) { sqlComm.Parameters.Add(p); }
78 // return sqlComm;
79 // }
80 // catch (SqlException ex)
81 // {
82 // SqlException e = (ex.GetBaseException() as SqlException);
83 // using (log4net.NDC.Push(string.Format("SqlException: ID={0} MESSAGE={1}{2}Diagnostics:{2}{3}", e.Number.ToString(), e.Message, System.Environment.NewLine, e.ToString())))
84 // {
85 // Logging.DatabaseLog.Error(string.Format("Failed to create command instance using command: {0}", command));
86 // }
87 // ErrorInfo = ex; throw ErrorInfo;
88 // }
89 // catch (Exception ex)
90 // {
91 // Exception e = ex.GetBaseException();
92 // using (log4net.NDC.Push(string.Format("{0}: MESSAGE={1}{2}Diagnostics:{2}{3}", e.GetType().Name, e.Message, System.Environment.NewLine, e.ToString())))
93 // {
94 // Logging.DatabaseLog.Error(string.Format("Failed to create command instance using command: {0}", command));
95 // }
96 // ErrorInfo = ex; throw ErrorInfo;
97 // }
98 //}
99 #endregion
100 #region public virtual DBConnection CreateConnection(out Exception ErrorInfo)
101 public virtual DBConnection CreateConnection(out Exception ErrorInfo)
102 {
103 ErrorInfo = null;
104 string connetionString = string.Empty;
105 try
106 {
107 connetionString = GetConnectionString();
108 using (log4net.NDC.Push(string.Format("connetionString={0}", connetionString)))
109 {
110 Logging.DatabaseLog.Debug("Creating Connection");
111 connection = new DBConnection();
112 connection.ConnectionString = connetionString;
113 Logging.DatabaseLog.Debug("Created Connection");
114 }
115 return this.connection;
116 }
117 catch (SqlException ex)
118 {
119 using (log4net.NDC.Push(string.Format("SqlException: ID={0} MESSAGE={1}{2}Diagnostics:{2}{3}", ex.Number.ToString(), ex.Message, System.Environment.NewLine, ex.ToString())))
120 {
121 Logging.DatabaseLog.Error(string.Format("Failed to create connection to {0} Database", DBDatabase));
122 }
123 ErrorInfo = ex; throw ErrorInfo;
124 }
125 catch (Exception ex)
126 {
127 using (log4net.NDC.Push(string.Format("{0}: MESSAGE={1}{2}Diagnostics:{2}{3}", ex.GetType().Name, ex.Message, System.Environment.NewLine, ex.ToString())))
128 {
129 Logging.DatabaseLog.Error(string.Format("Failed to create connection to {0} Database", DBDatabase));
130 }
131 ErrorInfo = ex; throw ErrorInfo;
132 }
133 }
134 #endregion
135 #region public virtual void OpenConnection(out Exception ErrorInfo)
136 public virtual void OpenConnection(out Exception ErrorInfo)
137 {
138 ErrorInfo = null;
139 string connetionString = string.Empty;
140 try
141 {
142 //this.CloseConnection(out ErrorInfo);
143 connetionString = GetConnectionString();
144 using (log4net.NDC.Push(string.Format("connectionString={0}", connetionString)))
145 {
146 Logging.DatabaseLog.Debug("Opening Connection");
147 connection.Open();
148 this.ConnectionIsOpen = true;
149 Logging.DatabaseLog.Debug("Opened Connection");
150 }
151 }
152 //catch (SqlException ex) { Console.WriteLine(ex.ToString()); ErrorInfo = ex; throw ErrorInfo;}
153 catch (SqlException ex)
154 {
155 if (ex.Message.ToLower().Contains(string.Format("Cannot open database").ToLower()))
156 {
157 ErrorInfo = null;
158 return;
159 }
160 using (log4net.NDC.Push(string.Format("SqlException: ID={0} MESSAGE={1}{2}Diagnostics:{2}{3}", ex.Number.ToString(), ex.Message, System.Environment.NewLine, ex.ToString())))
161 {
162 Logging.DatabaseLog.Error(string.Format("Failed to open connection to {0} Database", DBDatabase));
163 }
164 ErrorInfo = ex; throw ErrorInfo;
165 }
166 catch (Exception ex)
167 {
168 if (ex.Message.ToLower().Contains(string.Format("Cannot open database").ToLower()))
169 {
170 ErrorInfo = null;
171 return;
172 }
173 using (log4net.NDC.Push(string.Format("{0}: MESSAGE={1}{2}Diagnostics:{2}{3}", ex.GetType().Name, ex.Message, System.Environment.NewLine, ex.ToString())))
174 {
175 Logging.DatabaseLog.Error(string.Format("Failed to open connection to {0} Database", DBDatabase));
176 }
177 ErrorInfo = ex; throw ErrorInfo;
178 }
179 }
180 #endregion
181 #region public virtual void CloseConnection(out Exception ErrorInfo)
182 public virtual void CloseConnection(out Exception ErrorInfo)
183 {
184 ErrorInfo = null;
185 try
186 {
187 if (this.ConnectionIsOpen)
188 connection.Close();
189 }
190 catch (SqlException ex)
191 {
192 using (log4net.NDC.Push(string.Format("SqlException: ID={0} MESSAGE={1}{2}Diagnostics:{2}{3}", ex.Number.ToString(), ex.Message, System.Environment.NewLine, ex.ToString())))
193 {
194 Logging.DatabaseLog.Error(string.Format("Failed to close connection to {0} Database", DBDatabase));
195 }
196 ErrorInfo = ex; throw ErrorInfo;
197 }
198 catch (Exception ex)
199 {
200 using (log4net.NDC.Push(string.Format("{0}: MESSAGE={1}{2}Diagnostics:{2}{3}", ex.GetType().Name, ex.Message, System.Environment.NewLine, ex.ToString())))
201 {
202 Logging.DatabaseLog.Error(string.Format("Failed to close connection to {0} Database", DBDatabase));
203 }
204 ErrorInfo = ex; throw ErrorInfo;
205 }
206 }
207 #endregion
208 #region public virtual DbDataReader ExecuteQuery(string command, List<DBParameter> Params, out Exception ErrorInfo)
209 public virtual DbDataReader ExecuteQuery(string command, List<DBParameter> Params, out Exception ErrorInfo)
210 {
211 ErrorInfo = null;
212 if (!this.ConnectionIsOpen) { ErrorInfo = new Exception("Cannot execute query.", new Exception("A connection to the database has not, yet, been established.")); }
213 try
214 {
215 command = this.SafeSqlLiteral(command);
216 DBCommand sqlComm = new DBCommand();
217 sqlComm.CommandText = command;
218 sqlComm.Connection = connection;
219 foreach (DBParameter p in Params) { sqlComm.Parameters.Add(p); }
220 DbDataReader r = sqlComm.ExecuteReader();
221 return r;
222 }
223 catch (SqlException ex)
224 {
225 using (log4net.NDC.Push(string.Format("SqlException: ID={0} MESSAGE={1}{2}Diagnostics:{2}{3}", ex.Number.ToString(), ex.Message, System.Environment.NewLine, ex.ToString())))
226 {
227 Logging.DatabaseLog.Error(string.Format("Failed to execute query: {0}", command));
228 }
229 ErrorInfo = ex; throw ErrorInfo;
230 }
231 catch (Exception ex)
232 {
233 using (log4net.NDC.Push(string.Format("{0}: MESSAGE={1}{2}Diagnostics:{2}{3}", ex.GetType().Name, ex.Message, System.Environment.NewLine, ex.ToString())))
234 {
235 Logging.DatabaseLog.Error(string.Format("Failed to execute querey: {0}", command));
236 }
237 ErrorInfo = ex; throw ErrorInfo;
238 }
239 }
240 #endregion
241 #region public virtual void ExecuteNonQuery(string command, List<DBParameter> Params, out Exception ErrorInfo)
242 public virtual void ExecuteNonQuery(string command, List<DBParameter> Params, out Exception ErrorInfo)
243 {
244 ErrorInfo = null;
245 if (!this.ConnectionIsOpen) { ErrorInfo = new Exception("Cannot execute non-query.", new Exception("A connection to the database has not, yet, been established.")); }
246 try
247 {
248 command = this.SafeSqlLiteral(command);
249 DBCommand sqlComm = new DBCommand();
250 sqlComm.CommandText = command;
251 sqlComm.Connection = connection;
252 foreach (DBParameter p in Params) { sqlComm.Parameters.Add(p); }
253 sqlComm.ExecuteNonQuery();
254 }
255 catch (SqlException ex)
256 {
257 using (log4net.NDC.Push(string.Format("SqlException: ID={0} MESSAGE={1}{2}Diagnostics:{2}{3}", ex.Number.ToString(), ex.Message, System.Environment.NewLine, ex.ToString())))
258 {
259 Logging.DatabaseLog.Error(string.Format("Failed to execute non querey: {0}", command));
260 }
261 ErrorInfo = ex; throw ErrorInfo;
262 }
263 catch (Exception ex)
264 {
265 using (log4net.NDC.Push(string.Format("{0}: MESSAGE={1}{2}Diagnostics:{2}{3}", ex.GetType().Name, ex.Message, System.Environment.NewLine, ex.ToString())))
266 {
267 Logging.DatabaseLog.Error(string.Format("Failed to execute non querey: {0}", command));
268 }
269 ErrorInfo = ex; throw ErrorInfo;
270 }
271 }
272 #endregion
273 #region public virtual List<string> ExecuteColumnNamesReader(string command, List<DBParameter> Params, out Exception ErrorInfo)
274 public virtual List<string> ExecuteColumnNamesReader(string command, List<DBParameter> Params, out Exception ErrorInfo)
275 {
276 ErrorInfo = null;
277 try
278 {
279 List<string> ColumnNames = new List<string>();
280 DBDataAdapter da = new DBDataAdapter();
281 command = this.SafeSqlLiteral(command);
282 DBCommand sqlComm = new DBCommand();
283 sqlComm.CommandText = command;
284 sqlComm.Connection = connection;
285 foreach (DBParameter p in Params) { sqlComm.Parameters.Add(p); }
286 da.SelectCommand = sqlComm;
287 DataTable dt = new DataTable();
288 da.Fill(dt);
289 DataRow row = dt.Rows[0];
290 for (int ordinal = 0; ordinal < dt.Columns.Count; ordinal++)
291 {
292 string value = row[ordinal].ToString();
293 string column_name = dt.Columns[ordinal].ColumnName;
294 ColumnNames.Add(column_name);
295 }
296 return ColumnNames;
297 }
298 catch (SqlException ex)
299 {
300 using (log4net.NDC.Push(string.Format("SqlException: ID={0} MESSAGE={1}{2}Diagnostics:{2}{3}", ex.Number.ToString(), ex.Message, System.Environment.NewLine, ex.ToString())))
301 {
302 Logging.DatabaseLog.Error(string.Format("Failed to get colum names from reader: {0}", command));
303 }
304 ErrorInfo = ex; throw ErrorInfo;
305 }
306 catch (Exception ex)
307 {
308 using (log4net.NDC.Push(string.Format("{0}: MESSAGE={1}{2}Diagnostics:{2}{3}", ex.GetType().Name, ex.Message, System.Environment.NewLine, ex.ToString())))
309 {
310 Logging.DatabaseLog.Error(string.Format("Failed to get colum names from reader: {0}", command));
311 }
312 ErrorInfo = ex; throw ErrorInfo;
313 }
314 }
315 #endregion
316 #region public string[] ParseScriptToCommands(string strScript)
317
318 protected abstract bool ClientRunScript(string strFile, out Exception ErrorInfo);
319 #endregion
320 #region public virtual bool RunScript(string strFile, out Exception ErrorInfo)
321 public bool RunScript(string strFile, out Exception ErrorInfo)
322 {
323 ErrorInfo = null;
324 try
325 {
326 if (this.ConnectionIsOpen)
327 {
328 if (!ClientRunScript(strFile, out ErrorInfo))
329 {
330 if(ErrorInfo != null)
331 throw ErrorInfo;
332 return false;
333 }
334 }
335 else
336 {
337 Logging.DatabaseLog.Fatal(string.Format("Failed to run script: [database connection is not open] {0}{1}", System.Environment.NewLine, strFile));
338 return false;
339 }
340 }
341 catch (SqlException ex)
342 {
343 SqlException e = (ex.GetBaseException() as SqlException);
344 using (log4net.NDC.Push(string.Format("SqlException: ID={0} MESSAGE={1}{2}Diagnostics:{2}{3}", e.Number.ToString(), e.Message, System.Environment.NewLine, e.ToString())))
345 {
346 Logging.DatabaseLog.Error(string.Format("Failed to run script: {0}{1}", System.Environment.NewLine, strFile));
347 }
348 ErrorInfo = ex; throw ErrorInfo;
349 }
350 catch (Exception ex)
351 {
352 Exception e = ex.GetBaseException();
353 using (log4net.NDC.Push(string.Format("{0}: MESSAGE={1}{2}Diagnostics:{2}{3}", e.GetType().Name, e.Message, System.Environment.NewLine, e.ToString())))
354 {
355 Logging.DatabaseLog.Error(string.Format("Failed to run script: {0}{1}", System.Environment.NewLine, strFile));
356 }
357 ErrorInfo = ex; throw ErrorInfo;
358 }
359 return false;
360 }
361 #endregion
362 #endregion
363
364 #region IDisposable Members
365 public virtual void Dispose()
366 {
367 try
368 {
369 Exception ErrorInfo;
370 if (this.ConnectionIsOpen)
371 CloseConnection(out ErrorInfo);
372 }
373 catch
374 {
375 }
376 }
377 #endregion
378 }
379 }

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