76 lines
2.8 KiB
C#
76 lines
2.8 KiB
C#
|
#region License
|
||
|
|
|
||
|
|
//The contents of this file are subject to the Mozilla Public License
|
||
|
|
//Version 1.1 (the "License"); you may not use this file except in
|
||
|
|
//compliance with the License. You may obtain a copy of the License at
|
||
|
|
//http://www.mozilla.org/MPL/
|
||
|
|
//Software distributed under the License is distributed on an "AS IS"
|
||
|
|
//basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
|
||
|
|
//License for the specific language governing rights and limitations
|
||
|
|
//under the License.
|
||
|
|
|
||
|
|
#endregion
|
||
|
|
|
||
|
|
using System;
|
||
|
|
using System.Collections.Generic;
|
||
|
|
using System.Reflection;
|
||
|
|
using Migrator.Framework;
|
||
|
|
using Migrator.Providers;
|
||
|
|
|
||
|
|
namespace Migrator
|
||
|
|
{
|
||
|
|
/// <summary>
|
||
|
|
/// Handles loading Provider implementations
|
||
|
|
/// </summary>
|
||
|
|
public class ProviderFactory
|
||
|
|
{
|
||
|
|
private static readonly Assembly providerAssembly;
|
||
|
|
private static readonly Dictionary<String, object> dialects = new Dictionary<string, object>();
|
||
|
|
static ProviderFactory()
|
||
|
|
{
|
||
|
|
|
||
|
|
//string directory = Path.GetDirectoryName(Assembly.GetExecutingAssembly().CodeBase);
|
||
|
|
//string fullPath = Path.Combine(directory, "Migrator.Providers.dll");
|
||
|
|
//if (fullPath.StartsWith("file:\\"))
|
||
|
|
// fullPath = fullPath.Substring(6);
|
||
|
|
//else if (fullPath.StartsWith("file:"))
|
||
|
|
// fullPath = fullPath.Substring(5);
|
||
|
|
providerAssembly = Assembly.GetAssembly(typeof(TransformationProvider));
|
||
|
|
//providerAssembly = Assembly.LoadFrom("Migrator.Providers.dll");
|
||
|
|
LoadDialects();
|
||
|
|
}
|
||
|
|
|
||
|
|
public static ITransformationProvider Create(string providerName, string connectionString)
|
||
|
|
{
|
||
|
|
object dialectInstance = DialectForProvider(providerName);
|
||
|
|
MethodInfo mi = dialectInstance.GetType().GetMethod("NewProviderForDialect", new Type[] {typeof (String)});
|
||
|
|
return (ITransformationProvider)mi.Invoke(dialectInstance, new object[] { connectionString });
|
||
|
|
}
|
||
|
|
|
||
|
|
public static object DialectForProvider(string providerName)
|
||
|
|
{
|
||
|
|
if (String.IsNullOrEmpty(providerName))
|
||
|
|
return null;
|
||
|
|
|
||
|
|
foreach (string key in dialects.Keys)
|
||
|
|
{
|
||
|
|
if (0 < key.IndexOf(providerName, StringComparison.InvariantCultureIgnoreCase))
|
||
|
|
return dialects[key];
|
||
|
|
}
|
||
|
|
return null;
|
||
|
|
}
|
||
|
|
|
||
|
|
public static void LoadDialects()
|
||
|
|
{
|
||
|
|
Type dialectType = providerAssembly.GetType("Migrator.Providers.Dialect");
|
||
|
|
foreach (Type t in providerAssembly.GetTypes())
|
||
|
|
{
|
||
|
|
if (t.IsSubclassOf(dialectType))
|
||
|
|
{
|
||
|
|
dialects.Add(t.FullName, Activator.CreateInstance(t, null));
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|