object IQueryProvider.Execute(Expression expression)
{
var expanded = expression.Expand();
var optimized = LinqKitExtension.QueryOptimizer(expanded);
return(_query.InnerQuery.Provider.Execute(optimized));
}
// The following four methods first call ExpressionExpander to visit the expression tree, then call
// upon the inner query to do the remaining work.
IQueryable <TElement> IQueryProvider.CreateQuery <TElement>(Expression expression)
{
var expanded = expression.Expand();
var optimized = LinqKitExtension.QueryOptimizer(expanded);
return(_query.InnerQuery.Provider.CreateQuery <TElement>(optimized).AsExpandable());
}
public Task <object> ExecuteAsync(Expression expression, CancellationToken cancellationToken)
{
var asyncProvider = _query.InnerQuery.Provider as IDbAsyncQueryProvider;
var expanded = expression.Expand();
var optimized = LinqKitExtension.QueryOptimizer(expanded);
if (asyncProvider != null)
{
return(asyncProvider.ExecuteAsync(optimized, cancellationToken));
}
return(Task.FromResult(_query.InnerQuery.Provider.Execute(optimized)));
}
public Task <TResult> ExecuteAsync <TResult>(Expression expression, CancellationToken cancellationToken)
{
#if EFCORE
var asyncProvider = _query.InnerQuery.Provider as IAsyncQueryProvider;
#else
var asyncProvider = _query.InnerQuery.Provider as IDbAsyncQueryProvider;
#endif
var expanded = expression.Expand();
var optimized = LinqKitExtension.QueryOptimizer(expanded);
if (asyncProvider != null)
{
return(asyncProvider.ExecuteAsync <TResult>(optimized, cancellationToken));
}
return(Task.FromResult(_query.InnerQuery.Provider.Execute <TResult>(optimized)));
}