Replacements for some BLToolkit classes or methods missing in LinqToDB

[alexey-leonovich]

I'm migrating from BLToolkit to LinqToDB. And I couldn't find replacements for some classes or methods missing in LinqToDB.

1. IObjectFactory.CreateInstance has no InitContext context argument anymore. How to obtain context.MappingSchema, context.DataSource and context.SourceObject now?
2. IDataContext.Delete() and IDataContext.InsertOrReplace() cannot accept IEnumerable<T> anymore. Is iterating over entities collection and using db.InsertOrReplace(inputEntities[i]) the only option left? Isn't that a performance hit?
3. We used dbManager.SetCommand(command, params).Prepare() - Prepare is missing now. How to prepare command for execution?
4. In BLToolkit we used SqlQuery to generate Insert query and SqlQueryInfo to change parameter names like that:

public static void SetCommand<TEntity>([NotNull] this DbManager dbManager, TEntity entity, string actionName)
{
    var queryInfo = new SqlQuery<TEntity>(dbManager).GetSqlQueryInfo(dbManager, typeof(TEntity), actionName);
    var queryText = queryInfo.QueryText;
    var parameters = queryInfo.GetParameters(dbManager, entity);
    for (var i = 0; i < parameters.Length; i++)
    {
        var parameterName = parameters[i].ParameterName;
        //Parameters and Where-clause for primary key
        if (parameterName.EndsWith("_P") || parameterName.EndsWith("_W"))
        {
            var newName = parameterName.Substring(0, parameterName.Length - 2);
            queryText = queryText.Replace(parameterName, newName);
            parameters[i].ParameterName = newName;
        }
    }
    dbManager.SetCommand(queryText, parameters);
}

SqlQuery and SqlQueryInfo are missing - what to use instead?

Thank you in advance.

[alexey-leonovich]

@MaceWindu @igor-tkachev need your help. Especially about missing InitContext context parameter in IObjectFactory.CreateInstance - I need to implement database objects cache like that. Thank you in advance.

[igor-tkachev]

@alexey-leonovich, is this what you are looking for?
https://github.com/linq2db/linq2db/blob/master/Tests/Linq/Tools/EntityServices/IdentityMapTests.cs

[alexey-leonovich]

I used EntityServiceInterceptor https://github.com/linq2db/linq2db/blob/master/Tests/Linq/Linq/EntityCreatedTests.cs. Thank you.