// Copyright (C) Brian Ritchie, 2002\r
// \r
//\r
+\r
+//\r
+// Permission is hereby granted, free of charge, to any person obtaining\r
+// a copy of this software and associated documentation files (the\r
+// "Software"), to deal in the Software without restriction, including\r
+// without limitation the rights to use, copy, modify, merge, publish,\r
+// distribute, sublicense, and/or sell copies of the Software, and to\r
+// permit persons to whom the Software is furnished to do so, subject to\r
+// the following conditions:\r
+// \r
+// The above copyright notice and this permission notice shall be\r
+// included in all copies or substantial portions of the Software.\r
+// \r
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,\r
+// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF\r
+// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND\r
+// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE\r
+// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION\r
+// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION\r
+// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.\r
+//\r
using System;\r
using System.Data;\r
using System.Reflection;\r
+using System.IO;\r
\r
namespace Mono.Data\r
{\r
private Type connectionType;\r
private Type adapterType;\r
private Type commandType;\r
+ private Assembly providerAssembly;\r
private string assemblyName;\r
private string description;\r
- \r
+ private string parameterprefix;\r
+ private string commandBuilderTypeName = String.Empty;\r
+ private Type commandBuilderType;\r
+\r
public Provider(string _name, string _connection, \r
string _dataadapter, string _command, string _assembly,\r
- string _description)\r
+ string _description) \r
{\r
name = _name;\r
connectionTypeName = _connection;\r
description = _description;\r
}\r
\r
+ public Provider(string _name, string _connection, \r
+ string _dataadapter, string _command, string _assembly,\r
+ string _description, string _parameterprefix, string _commandbuilder)\r
+ {\r
+ name = _name;\r
+ connectionTypeName = _connection;\r
+ adapterTypeName = _dataadapter;\r
+ assemblyName = _assembly;\r
+ commandTypeName = _command;\r
+ description = _description;\r
+\r
+ switch(_parameterprefix) {\r
+ case "colon":\r
+ parameterprefix = ":"; // named parameter prefixed by a semicolon\r
+ break;\r
+ case "at":\r
+ parameterprefix = "@"; // named parameter prefixed by an at symbol\r
+ break;\r
+ case "questionmark":\r
+ parameterprefix = "?"; // postional parameter noted by the question mark\r
+ break;\r
+ }\r
+\r
+ commandBuilderTypeName = _commandbuilder;\r
+ }\r
+\r
public Provider(string _name, Type _connection, Type _dataadapter, Type _command,\r
string _description)\r
{\r
+ if (_connection == null) \r
+ throw new System.ArgumentNullException ("_connection");\r
+ if (_dataadapter == null) \r
+ throw new System.ArgumentNullException ("_dataadapter");\r
+ if (_command == null) \r
+ throw new System.ArgumentNullException ("_command");\r
+\r
name = _name;\r
connectionTypeName = _connection.FullName;\r
adapterTypeName = _dataadapter.FullName;\r
get {return description;}\r
}\r
\r
+ public string ParameterPrefix \r
+ {\r
+ get {return parameterprefix;}\r
+ }\r
+\r
+ public Assembly ProviderAssembly {\r
+ get {\r
+ if (providerAssembly == null) {\r
+ if (assemblyName.IndexOf(',') == -1) //try to load with a partial name if that's all we have\r
+ providerAssembly = Assembly.LoadWithPartialName (assemblyName);\r
+ else \r
+ providerAssembly = Assembly.Load (assemblyName);\r
+ }\r
+\r
+ return providerAssembly;\r
+ }\r
+ }\r
+\r
public Type ConnectionType\r
{\r
- get \r
- {\r
- if (connectionType==null)\r
- {\r
- connectionType=Type.GetType(connectionTypeName+","+assemblyName);\r
+ get {\r
+ if (connectionType == null) {\r
+ connectionType = ProviderAssembly.GetType (connectionTypeName, false);\r
+ if (connectionType == null) {\r
+ throw new Exception (String.Format ("Unable to load type of connection class: {0} from assembly: {1}",
+ connectionTypeName, assemblyName));\r
+ }\r
}\r
return connectionType;\r
}\r
\r
public Type DataAdapterType\r
{\r
- get \r
- {\r
- if (adapterType==null)\r
- {\r
- adapterType=Type.GetType(adapterTypeName+","+assemblyName);\r
+ get {\r
+ if (adapterType == null) {\r
+ adapterType = ProviderAssembly.GetType (adapterTypeName, false);\r
+ if (adapterType == null) {\r
+ throw new Exception (String.Format ("Unable to load type of adapter class: {0} from assembly: {1}",
+ adapterTypeName, assemblyName));\r
+ }\r
}\r
return adapterType;\r
}\r
}\r
\r
- public Type CommandType\r
- {\r
- get \r
- {\r
- if (commandType==null)\r
- {\r
- commandType=Type.GetType(commandTypeName+","+assemblyName);\r
+ public Type CommandType {\r
+ get {\r
+ if (commandType == null) {\r
+ commandType = ProviderAssembly.GetType (commandTypeName, false);\r
+ if (commandType == null) {\r
+ throw new Exception (String.Format ("Unable to load type of command class: {0} from assembly: {1}",
+ commandTypeName, assemblyName));\r
+ }\r
}\r
return commandType;\r
}\r
}\r
\r
+ public Type CommandBuilderType {\r
+ get {\r
+ if (commandBuilderType == null) {\r
+ if (commandBuilderTypeName.Equals(String.Empty))\r
+ throw new Exception("Provider does not have CommandBuilder type defined.");\r
+ commandBuilderType = ProviderAssembly.GetType (commandBuilderTypeName, false);\r
+ if (commandBuilderType == null) {\r
+ throw new Exception (String.Format ("Unable to load type of command class: {0} from assembly: {1}",
+ commandBuilderTypeName, assemblyName));\r
+ }\r
+ }\r
+ return commandBuilderType;\r
+ }\r
+ }\r
+\r
public IDbConnection CreateConnection()\r
{\r
- return (IDbConnection) Activator.CreateInstance(ConnectionType);\r
+ object connObj = null;\r
+\r
+ switch (Name) {
+ case "System.Data.SqlClient":
+ connObj = new System.Data.SqlClient.SqlConnection ();
+ break;
+ case "System.Data.Odbc":
+ connObj = new System.Data.Odbc.OdbcConnection ();
+ break;
+ case "System.Data.OleDb":
+ connObj = new System.Data.OleDb.OleDbConnection ();
+ break;
+ default:
+ connObj = Activator.CreateInstance (ConnectionType);\r
+ break;
+ }\r
+\r
+ if (connObj == null)\r
+ throw new Exception (String.Format ("Unable to create instance of connection class: {0} from assembly: {1}",
+ connectionTypeName, assemblyName));
+ \r
+ return (IDbConnection) connObj;\r
}\r
\r
public IDbDataAdapter CreateDataAdapter()\r
{\r
- return (IDbDataAdapter) Activator.CreateInstance(DataAdapterType);\r
+ object adapterObj = Activator.CreateInstance (DataAdapterType);\r
+ if (adapterObj == null)\r
+ throw new Exception (String.Format ("Unable to create instance of adapter class: {0} from assembly: {1}",
+ adapterTypeName, assemblyName));\r
+\r
+ return (IDbDataAdapter) adapterObj;\r
}\r
\r
public IDbCommand CreateCommand()\r
{\r
- return (IDbCommand) Activator.CreateInstance(CommandType);\r
+ object commandObj = Activator.CreateInstance (CommandType);\r
+ if (commandObj == null)\r
+ throw new Exception (String.Format ("Unable to create instance of command class: {0} from assembly: {1}",
+ commandTypeName, assemblyName));\r
+\r
+ return (IDbCommand) commandObj;\r
+ }\r
+\r
+ public object CreateCommandBuilder(IDbDataAdapter adapter) \r
+ {\r
+ if (adapter == null) \r
+ throw new System.ArgumentNullException ("adapter");\r
+\r
+ object obj = (object) adapter;\r
+ if (!DataAdapterType.ToString ().Equals (obj.ToString ()))\r
+ throw new System.ArgumentException ("adapter not part of this provider.");\r
+ \r
+ if (commandBuilderTypeName.Equals (String.Empty))\r
+ throw new Exception ("Provider does not have CommandBuilder type defined.");\r
+ \r
+ object[] parms = new object [] { obj };\r
+ object commandBuilderObj = Activator.CreateInstance (CommandBuilderType, parms);\r
+ if (commandBuilderObj == null)\r
+ throw new Exception (String.Format ("Unable to create instance of command builder class: {0} from assembly: {1}",
+ commandBuilderTypeName, assemblyName));\r
+\r
+ return commandBuilderObj;\r
}\r
}\r
}\r
+\r
projects / mono.git / blobdiff