private void SetupQueryVisitorContextDefaults(IQueryVisitorContext context)
{
if (_config.DefaultAliasResolver != null && context.GetRootAliasResolver() == null)
{
context.SetRootAliasResolver(_config.DefaultAliasResolver);
}
if (_config.DefaultValidator != null && context.GetValidator() == null)
{
context.SetValidator(_config.DefaultValidator);
}
}
public static AliasResolver GetAliasResolver(this IQueryNode node, IQueryVisitorContext context)
{
object value = null;
if (node.Data.TryGetValue(AliasResolverKey, out value))
{
return(value as AliasResolver);
}
if (node.Parent == null)
{
return(context.GetRootAliasResolver());
}
return(null);
}
public override async Task <IQueryNode> AcceptAsync(IQueryNode node, IQueryVisitorContext context)
{
var rootResolver = context.GetRootAliasResolver();
if (rootResolver != null)
{
if (node is GroupNode)
{
node.SetAliasResolver(rootResolver);
}
else
{
throw new InvalidOperationException("Node must be GroupNode.");
}
}
await node.AcceptAsync(this, context).ConfigureAwait(false);
return(node);
}