protected Dictionary <ExpandNode, TempTableNode> CreateChildren(IEnumerable <ExpandNode> qChildren, TempTableNode node,
out IEnumerable <string> relatedPropertiesForSelect)
{
Dictionary <ExpandNode, TempTableNode> childDict = new Dictionary <ExpandNode, TempTableNode>();
List <string> childrenForSelect = new List <string>();
foreach (ExpandNode qChild in qChildren)
{
TempTableNode child;
string[] select = new string[qChild.Query.Select.Properties.Length];
qChild.Query.Select.Properties.CopyTo(select, 0);
if (qChild is EntityExpandNode)
{
child = new EntityTempNode(qChild.Property, select, qChild.Entity);
}
else if (qChild is CollectionExpandNode)
{
Order[] orderby = GetOrders(qChild.Query);
child = new CollectionTempNode(qChild.Property, select, orderby, qChild.Entity);
}
else
{
throw new NotSupportedException(qChild.GetType().ToString()); // never
}
child.Path = node.Path + "/" + qChild.Property;
//
DirectRelationship firstDirectRelationship = qChild.Relationship.DirectRelationships[0];
Dictionary <string, string> relatedKey = new Dictionary <string, string>();
for (int i = 0; i < firstDirectRelationship.Properties.Length; i++)
{
relatedKey.Add(firstDirectRelationship.Properties[i], firstDirectRelationship.RelatedProperties[i]);
}
child.RelatedKey = relatedKey;
node.Children.Add(child);
// NativeProperties
childrenForSelect.AddRange(firstDirectRelationship.Properties);
childDict.Add(qChild, child);
}
relatedPropertiesForSelect = childrenForSelect.Distinct();
return(childDict);
}
protected TempTableNode BuildTempTableTree(QueryExpand queryExpand)
{
Query query = queryExpand.Query;
XElement entitySchema = query.Schema.GetEntitySchema(query.Entity);
string name = entitySchema.Attribute(SchemaVocab.Collection).Value;
string[] select = new string[query.Select.Properties.Length];
query.Select.Properties.CopyTo(select, 0);
Order[] orderby = GetOrders(query);
TempTableNode root = new CollectionTempNode(name, select, orderby, query.Entity)
{
Path = name
};
//
Dictionary <ExpandNode, TempTableNode> childrenDict = CreateChildren(queryExpand.Nodes, root, out IEnumerable <string> relatedPropertiesForSelect);
query.Select.Properties = query.Select.Properties.Union(relatedPropertiesForSelect).ToArray();
query.Properties.UnionFieldProperties(relatedPropertiesForSelect);
//
if (query.Top != 0 || query.Skip != 0)
{
SetRootPagingStatments(root, queryExpand);
}
else
{
SetRootSelectStatments(root, queryExpand);
}
//
foreach (KeyValuePair <ExpandNode, TempTableNode> pair in childrenDict)
{
pair.Value.ParentTempTableName = root.TempTableName;
Compose(pair.Key, pair.Value);
}
return(root);
}
