IQueryable IQueryProvider.CreateQuery(Expression expression)
{
Type elementType = ExpressionTypeSystem.GetElementType(expression.Type);
try
{
return((IQueryable)Activator.CreateInstance(typeof(Query <>).MakeGenericType(elementType), new object[] { this, expression }));
}
catch (TargetInvocationException tie)
{
throw tie.InnerException;
}
}
public override object Execute(Expression expression)
{
var result = this.Translate(expression);
var data = _client.GetData(result.QueryString);
if (result.Projector != null)
{
Type elementType = ExpressionTypeSystem.GetElementType(expression.Type);
var projector = result.Projector.Compile();
return(Activator.CreateInstance(
typeof(ProjectionReader <,>).MakeGenericType(typeof(T), elementType),
BindingFlags.Instance | BindingFlags.NonPublic, null,
new object[] { data, projector },
null
));
}
else
{
return(data);
}
}