public static IAsyncEnumerable <TData> GetAllAsync <TData>(this IQueryableDataStore dataStore,
CancellationToken cancellation = default)
{
if (dataStore == null)
{
throw new ArgumentNullException(nameof(dataStore));
}
return(dataStore.QueryAsync <TData, TData>(p => p, cancellation));
}
public IProcessManagerAttachments <TState> Attach <TEvent>(Expression <Func <TEvent, TState, bool> > predicate)
{
Func <object, Task <TState> > mapping = o =>
{
var evt = (TEvent)o;
var dBPredicate = ParameterReplacer.Replace <Func <TEvent, TState, bool>, Func <TState, bool> >(predicate, predicate.Parameters.First(), Expression.Constant(evt));
return(_dataStore.QueryAsync <TState, TState>(queryable => queryable.Where(dBPredicate)).FirstOrDefault());
};
_mappings[typeof(TEvent)] = mapping;
return(this);
}
public static IAsyncEnumerable <TData> QueryAsync <TData>(this IQueryableDataStore dataStore, Func <IQueryable <TData>, IQueryable <TData> > queryShaper, CancellationToken cancellation = default)
where TData : class
{
if (dataStore == null)
{
throw new ArgumentNullException(nameof(dataStore));
}
if (queryShaper == null)
{
throw new ArgumentNullException(nameof(queryShaper));
}
return(dataStore.QueryAsync(queryShaper, cancellation));
}
public static IAsyncEnumerable <TData> GetByAsync <TData>(this IQueryableDataStore dataStore,
Expression <Func <TData, bool> > predicate,
CancellationToken cancellation = default)
{
if (dataStore == null)
{
throw new ArgumentNullException(nameof(dataStore));
}
if (predicate == null)
{
throw new ArgumentNullException(nameof(predicate));
}
return(dataStore.QueryAsync <TData, TData>(p => p.Where(predicate), cancellation));
}
public static IAsyncEnumerable <TResult> GetAllAsync <TData, TResult>(this IQueryableDataStore dataStore,
Expression <Func <TData, TResult> > projection,
CancellationToken cancellation = default)
{
if (dataStore == null)
{
throw new ArgumentNullException(nameof(dataStore));
}
if (projection == null)
{
throw new ArgumentNullException(nameof(projection));
}
return(dataStore.QueryAsync <TData, TResult>(p => p.Select(projection), cancellation));
}
public static Task <TResult> GetSingleAsync <TData, TResult>(this IQueryableDataStore dataStore,
Expression <Func <TData, bool> > predicate,
Expression <Func <TData, TResult> > projection,
CancellationToken cancellation = default)
{
if (dataStore == null)
{
throw new ArgumentNullException(nameof(dataStore));
}
if (predicate == null)
{
throw new ArgumentNullException(nameof(predicate));
}
if (projection == null)
{
throw new ArgumentNullException(nameof(projection));
}
return(dataStore.QueryAsync <TData, TResult>(p => p.Where(predicate).Select(projection), cancellation).FirstOrDefault());
}
