/// <summary>
/// Returns the appropriate dynamic ObjectContext type.
/// </summary>
/// <typeparam name="T">
/// The ObjectContext type that the result type should derive from.
/// </typeparam>
/// <param name="entityConnectionString">
/// The entity connection string that references the metadata and identifies the
/// persistent database.
/// </param>
/// <param name="persistent">
/// if set to <c>true</c> the ObjectContext uses a persistent database, otherwise
/// transient.
/// </param>
/// <param name="dataLoader">
/// The data loader that initializes the state of the database.
/// </param>
/// <returns>
/// The ObjectContext type.
/// </returns>
private static Type CreateType <T>(
string entityConnectionString,
bool persistent,
IDataLoader dataLoader)
where T : ObjectContext
{
EffortConnectionStringBuilder ecsb = new EffortConnectionStringBuilder();
if (dataLoader != null)
{
ecsb.DataLoaderType = dataLoader.GetType();
ecsb.DataLoaderArgument = dataLoader.Argument;
}
string effortConnectionString = ecsb.ConnectionString;
return(ObjectContextTypeStore.GetObjectContextType(
entityConnectionString,
effortConnectionString,
typeof(T),
() =>
{
if (string.IsNullOrEmpty(entityConnectionString))
{
entityConnectionString = GetDefaultConnectionString <T>();
}
return CreateType <T>(
entityConnectionString,
effortConnectionString,
persistent);
}));
}
/// <summary>
/// Initializes a new instance of the <see cref="DataLoaderConfigurationKey" />
/// class.
/// </summary>
/// <param name="loader"> The data loader. </param>
public DataLoaderConfigurationKey(IDataLoader loader)
{
if (loader == null)
{
throw new ArgumentNullException("loader");
}
this.type = loader.GetType();
this.argument = loader.Argument ?? string.Empty;
}
/// <summary>
/// Creates an EffortConnection object with a connection string that represents the
/// specified parameter values.
/// </summary>
/// <param name="instanceId"> The instance id. </param>
/// <param name="dataLoader"> The data loader. </param>
/// <returns> The EffortConnection object. </returns>
private static EffortConnection Create(string instanceId, IDataLoader dataLoader)
{
EffortProviderConfiguration.VerifyProvider();
EffortConnectionStringBuilder connectionString =
new EffortConnectionStringBuilder();
connectionString.InstanceId = instanceId;
if (dataLoader != null)
{
connectionString.DataLoaderType = dataLoader.GetType();
connectionString.DataLoaderArgument = dataLoader.Argument;
}
EffortConnection connection = new EffortConnection();
connection.ConnectionString = connectionString.ConnectionString;
return(connection);
}
/// <summary>
/// Creates an EffortConnection object with a connection string that represents the
/// specified parameter values.
/// </summary>
/// <param name="instanceId"> The instance id. </param>
/// <param name="dataLoader"> The data loader. </param>
/// <returns> The EffortConnection object. </returns>
private static EffortConnection Create(string instanceId, IDataLoader dataLoader)
{
EffortProviderConfiguration.VerifyProvider();
EffortConnectionStringBuilder connectionString =
new EffortConnectionStringBuilder();
connectionString.InstanceId = instanceId;
if (dataLoader != null)
{
connectionString.DataLoaderType = dataLoader.GetType();
connectionString.DataLoaderArgument = dataLoader.Argument;
}
EffortConnection connection = new EffortConnection();
connection.ConnectionString = connectionString.ConnectionString;
return connection;
}
/// <summary>
/// Priorities the specified loader.
/// </summary>
/// <param name="loader">The loader.</param>
/// <returns></returns>
public static int Priority(this IDataLoader loader)
{
var attr = loader.GetType().GetCustomAttribute <VersionedComponentExportAttribute>();
return(attr == null ? 0 : attr.Priority);
}
