/// <summary>
/// Gets Count method from Queryable that should run with DbSet method to get count of a model in database.
/// </summary>
/// <param name="seederInfo">The seeder method information.</param>
/// <returns>Count method from Queryable for the model that should seed.</returns>
protected internal virtual MethodInfo?GetCountMethod(SeederInfo seederInfo)
{
return(typeof(Queryable)
.GetMethods()
.FirstOrDefault(x => x.Name == "Count" && x.GetParameters().Length == 1)?
.MakeGenericMethod(seederInfo.SeederAttribute.Type));
}
/// <summary>
/// Creates an instance from the class which seeder is defined in it.
/// </summary>
/// <param name="seederInfo">The seeder method information.</param>
/// <returns>An instance of the class which seeder is defined in it.</returns>
protected virtual object?CreateSeederInstance(SeederInfo seederInfo)
{
var seederConstructorInfo = GetConstructorInfo(seederInfo.Type);
if (seederConstructorInfo == null)
{
return(null);
}
var seederConstructorParameters = CreateConstructorParameters(seederConstructorInfo);
return(Activator.CreateInstance(seederInfo.Type, seederConstructorParameters));
}
/// <summary>
/// Gets DbSet method of seeder model from DbContext.
/// </summary>
/// <param name="seederInfo">The seeder method information.</param>
/// <returns>DbSet method of seeder model from DbContext.</returns>
protected internal virtual MethodInfo?GetDbSetMethod(SeederInfo seederInfo)
{
return(DbContext.GetType().GetMethods()
.FirstOrDefault(x => x.Name == "Set" && x.GetParameters().Length == 0)?
.MakeGenericMethod(seederInfo.SeederAttribute.Type));
}
/// <summary>
/// Invokes a non-async seeder method.
/// </summary>
/// <param name="seederInfo">The seeder method information.</param>
/// <param name="seederInstance">An instance of the class which seeder is defined in it.</param>
protected virtual void InvokeSeeder(SeederInfo seederInfo, object seederInstance)
{
seederInfo.MethodInfo.Invoke(seederInstance, null);
}
/// <summary>
/// Invokes an async seeder method.
/// </summary>
/// <param name="seederInfo">The seeder method information.</param>
/// <param name="seederInstance">An instance of the class which seeder is defined in it.</param>
protected virtual void InvokeAsyncSeeder(SeederInfo seederInfo, object seederInstance)
{
(seederInfo.MethodInfo.Invoke(seederInstance, parameters: null) as Task)?.Wait();
}
