private async Task <bool> OnDelete(TKey key, EntityFrameworkProjectionContext context)
{
TProjection existingProjection = await context.GetProjection <TProjection>(key);
if (existingProjection != null)
{
var set = context.GetDbSet <TProjection>();
set.Remove(existingProjection);
//await context.SaveAsync().ConfigureAwait(false);
return(true);
}
return(false);
}
private async Task OnUpdate(TKey key, EntityFrameworkProjectionContext context, Func <TProjection, Task> projector, Func <bool> createIfMissing)
{
TProjection projection = await context.GetProjection <TProjection>(key);
if ((projection == null) && createIfMissing())
{
projection = new TProjection();
_setIdentity(projection, key);
await projector(projection).ConfigureAwait(false);
//await context.SaveAsync().ConfigureAwait(false);
}
else
{
if (projection != null && Filter(projection))
{
await projector(projection).ConfigureAwait(false);
}
}
}
private async Task OnCreate(TKey key, EntityFrameworkProjectionContext context, Func <TProjection, Task> projector, Func <TProjection, bool> shouldOverwrite)
{
TProjection projection = await context.GetProjection <TProjection>(key);
if ((projection == null) || shouldOverwrite(projection))
{
if (projection == null)
{
projection = new TProjection();
_setIdentity(projection, key);
await projector(projection).ConfigureAwait(false);
var set = context.GetDbSet <TProjection>();
set.Add(projection);
//await context.SaveAsync().ConfigureAwait(false);
}
else
{
await projector(projection).ConfigureAwait(false);
}
}
}
public async Task ProjectEvent(object anEvent, EntityFrameworkProjectionContext context)
{
context.WasHandled = await _eventMap.Handle(anEvent, context).ConfigureAwait(false);
}