private Func <IDataReader, TItem> CompileForEnumerate <TItem>(TableIdentity heading)
{
this.variables = new VariableStore();
ItemBuilder builder = new ItemBuilder(this.State.Schema, heading);
EnumerateNode enumerateNode = builder.Build();
MetadataNode resultNode = enumerateNode.Items.FirstOrDefault(n => n.HasFlag(NodeFlags.Result));
if (resultNode == null)
{
return(r => default);
public ResultNode Build()
{
this.PreserveIndices();
ItemBuilder itemBuilder = new ItemBuilder(this.Schema, this.Table);
EnumerateNode enumerateNode = itemBuilder.Build();
IList <MetadataNode> itemNodes = this.GetItemNodes(enumerateNode).ToList();
IList <ElementNode> elementNodes = this.GetElementNodes(itemNodes).ToList();
IList <ListNode> listNodes = this.GetListNodes(elementNodes).ToList();
IList <ListNode> dictNodes = this.GetDictionaryNodes(elementNodes).ToList();
this.AddAggregateTargets(elementNodes);
return(new ResultNode()
{
Lists = listNodes.Concat(dictNodes).ToList(),
Elements = elementNodes,
Helpers = enumerateNode.Helpers,
});
}
private IEnumerable <MetadataNode> GetItemNodes(EnumerateNode enumerateNode)
{
List <MetadataNode> itemNodes = enumerateNode.Items.ToList();
List <MetadataNode> allNodes = itemNodes.SelectMany(n => n.Tree()).Except(itemNodes).ToList();
List <MetadataNode> fakeNodes = allNodes.Where(n => this.HasManyAttribute(n.Metadata)).ToList();
foreach (MetadataNode itemNode in fakeNodes)
{
MetadataNode parentNode = this.FindNode(itemNodes, itemNode.Metadata.Parent);
if (parentNode != null)
{
parentNode.Properties.Remove(itemNode);
itemNodes.Insert(0, itemNode);
}
}
foreach (MetadataNode itemNode in itemNodes.Where(this.HasValue))
{
yield return(itemNode);
}
}