public async Task <T> Handle(CreateEntityCommand <T> request, CancellationToken cancellationToken)
{
_context.Add(request.Entity);
await _context.SaveChangesAsync(cancellationToken);
return(request.Entity);
}
private async Task SaveSnapshotAsync(Person person)
{
_samplesContext.Persons.Add(new PersonSnapshot
{
Id = person.Id.Value,
FirstName = person.Name.FirstName,
LastName = person.Name.LastName
});
await _samplesContext.SaveChangesAsync();
}
public async Task <T> Handle(DeleteEntityCommand <T> request, CancellationToken cancellationToken)
{
var entity = await _context.Set <T>().SingleOrDefaultAsync(x => x.Id == request.EntityId, cancellationToken);
if (entity is null)
{
return(null);
}
_context.Attach(entity);
_context.Entry(entity).State = EntityState.Deleted;
await _context.SaveChangesAsync(cancellationToken);
return(entity);
}
public async Task <T> Handle(UpdateEntityCommand <T> request, CancellationToken cancellationToken)
{
var exists = await _context.Set <T>().AnyAsync(x => x.Id == request.EntityId, cancellationToken);
if (!exists)
{
return(null);
}
var entity = request.Entity;
entity.Id = request.EntityId;
_context.Attach(entity);
_context.Entry(entity).State = EntityState.Modified;
await _context.SaveChangesAsync(cancellationToken);
return(entity);
}