public int GetListIndex(IBindingMetadata metadata)
{
if (metadata.HasFlag(BindingMetadataFlags.Model))
{
return(ResultIndex);
}
else if (metadata.HasFlag(BindingMetadataFlags.Item) && metadata.Parent.HasFlag(BindingMetadataFlags.Model))
{
return(ResultIndex);
}
return(this.GetListIndex(new BufferCacheKey(metadata.Identity)));
}
public AggregateNode Build()
{
IBindingMetadata metadata = this.Schema.GetMetadata <IBindingMetadata>();
AggregateNode aggrNode = new AggregateNode()
{
Metadata = metadata,
Index = this.State.Indexer.GetListIndex(metadata.Item.Identity),
};
if (this.State.Aggregate.Targets.Count > 0)
{
aggrNode.Item = new MetadataNode(metadata.Item);
}
foreach (MetadataIdentity identity in this.State.Aggregate.Targets)
{
IBindingMetadata targetMetadata = identity.GetMetadata <IBindingMetadata>();
IBindingMetadata valueMetadata = targetMetadata.HasFlag(BindingMetadataFlags.Item) ? targetMetadata.Parent : targetMetadata;
MetadataNode valueNode = new MetadataNode(valueMetadata)
{
ListIndex = this.State.Indexer.GetListIndex(identity),
};
this.AddListNode(aggrNode, valueNode);
}
return(aggrNode);
}
private static void AddDataNode(NodeTree tree, DataAttribute attribute)
{
MetadataIdentity identity = new MetadataIdentity(tree.Schema, attribute.Name);
IBindingMetadata metadata = identity.Lookup <IBindingMetadata>() ?? FindDynamicMetadata(identity);
if (metadata != null)
{
Node node;
if (metadata.HasFlag(BindingMetadataFlags.Dynamic))
{
node = AddDynamicNode(tree, identity, metadata);
}
else
{
node = AddStaticNode(tree, metadata);
}
if (node != null)
{
node.Data = attribute;
tree.Data.Add(node);
}
}
}
private bool IsWriterList(IBindingMetadata metadata)
{
if (this.QueryType == QueryType.Aggregate)
{
if (metadata.HasFlag(BindingMetadataFlags.Model))
{
return(false);
}
else if (metadata.HasFlag(BindingMetadataFlags.Item) && metadata.Parent.HasFlag(BindingMetadataFlags.Model))
{
return(false);
}
}
return(true);
}
private static Node AddStaticNode(NodeTree tree, IBindingMetadata metadata)
{
Node thisNode = tree.FindNode(metadata);
if (thisNode != null)
{
return(thisNode);
}
else if (metadata.HasFlag(BindingMetadataFlags.Item) || HasValidReference(metadata))
{
thisNode = new Node(metadata)
{
IsDynamic = metadata.HasFlag(BindingMetadataFlags.Dynamic),
};
tree.Nodes.Add(thisNode);
tree.Items.Add(thisNode);
}
else if (metadata.HasFlag(BindingMetadataFlags.Model))
{
thisNode = new Node(metadata)
{
IsDynamic = metadata.HasFlag(BindingMetadataFlags.Dynamic),
};
tree.Nodes.Add(thisNode);
tree.Items.Add(thisNode);
}
else
{
Node parentNode = tree.FindNode(metadata.Parent) ?? AddStaticNode(tree, metadata.Parent);
if (parentNode != null)
{
thisNode = new Node(metadata)
{
IsDynamic = metadata.HasFlag(BindingMetadataFlags.Dynamic),
};
parentNode.Properties.Add(thisNode);
tree.Nodes.Add(thisNode);
}
}
return(thisNode);
}
private bool RequiresReference(IBindingMetadata metadata)
{
if (metadata.HasFlag(BindingMetadataFlags.Model))
{
return(false);
}
else if (metadata.HasFlag(BindingMetadataFlags.Item) && metadata.Parent.HasFlag(BindingMetadataFlags.Model))
{
return(false);
}
else if (this.IsAggregateList(metadata))
{
return(false);
}
return(true);
}
private MetadataNode AddStaticNode(List <MetadataNode> itemNodes, IBindingMetadata metadata, ColumnIdentity value)
{
MetadataNode thisNode = this.FindNode(itemNodes, metadata);
if (thisNode != null)
{
thisNode.Column ??= value;
}
else if (metadata.HasFlag(BindingMetadataFlags.Item))
{
MetadataNode itemNode = new MetadataNode(metadata)
{
Metadata = metadata,
Column = value,
Flags = metadata.HasFlag(BindingMetadataFlags.Dynamic) ? NodeFlags.Dynamic : NodeFlags.None,
};
if (metadata.Parent.HasFlag(BindingMetadataFlags.Model))
{
itemNode.Flags |= NodeFlags.Result;
}
itemNodes.Add(itemNode);
return(itemNode);
}
else
{
MetadataNode parentNode = this.FindNode(itemNodes, metadata.Parent) ?? this.AddStaticNode(itemNodes, metadata.Parent, null);
if (parentNode != null)
{
thisNode = new MetadataNode(metadata)
{
Metadata = metadata,
Column = value,
Flags = metadata.HasFlag(BindingMetadataFlags.Dynamic) ? NodeFlags.Dynamic : NodeFlags.None,
};
parentNode.Properties.Add(thisNode);
}
}
return(thisNode);
}
private MethodInfo GetAddDynamicMethod(IBindingMetadata metadata)
{
if (metadata.HasFlag(BindingMetadataFlags.Dynamic))
{
Type dictionaryType = typeof(IDictionary <string, object>);
return(dictionaryType.GetMethod("Add", new[] { typeof(string), typeof(object) }));
}
return(null);
}
internal static BindingException NoReferenceFound(IBindingMetadata metadata)
{
if (metadata.HasFlag(BindingMetadataFlags.Item))
{
return(NoReferenceFound(metadata.Identity, metadata.Parent.Parent.Identity));
}
else
{
return(NoReferenceFound(metadata.Identity, metadata.Parent.Identity));
}
}
private IBindingMetadata FindDynamicMetadata(MetadataIdentity identity)
{
IBindingMetadata metadata = identity.GetMetadata <IBindingMetadata>();
while (metadata == null && (identity = identity.Pop()) != null)
{
metadata = identity.GetMetadata <IBindingMetadata>();
}
if (metadata != null && metadata.HasFlag(BindingMetadataFlags.Dynamic))
{
return(metadata);
}
return(null);
}
private void AddValueNode(List <MetadataNode> itemNodes, ColumnIdentity value)
{
MetadataIdentity identity = new MetadataIdentity(this.schema, value.Name);
IBindingMetadata metadata = identity.GetMetadata <IBindingMetadata>() ?? this.FindDynamicMetadata(identity);
if (metadata != null && !this.IsOutsideResultScope(metadata))
{
if (metadata.HasFlag(BindingMetadataFlags.Dynamic))
{
this.AddDynamicNode(itemNodes, identity, metadata, value);
}
else
{
this.AddStaticNode(itemNodes, metadata, value);
}
}
}
private ParameterExpression GetListVariable(IBindingMetadata metadata, KeyReader joinKey)
{
if (joinKey != null)
{
Type dictType = typeof(Dictionary <,>).MakeGenericType(joinKey.KeyType, typeof(ElasticArray));
return(this.GetNamedVariable(dictType, metadata.Identity));
}
else if (metadata.HasFlag(BindingMetadataFlags.Item))
{
Type listType = metadata.Parent.Composition?.Construct?.Type ?? throw BindingException.InvalidConstructor(metadata.Parent);
return(this.GetNamedVariable(listType, metadata.Identity));
}
return(null);
}
private NewExpression GetDefaultConstructor(IBindingMetadata metadata)
{
if (metadata.HasFlag(BindingMetadataFlags.Dynamic))
{
return(Expression.New(typeof(ExpandoObject)));
}
if (metadata.Type.IsValueType)
{
return(Expression.New(metadata.Type));
}
ConstructorInfo constructorInfo = metadata.Type.GetConstructor(Type.EmptyTypes);
if (constructorInfo != null)
{
return(Expression.New(constructorInfo));
}
return(null);
}
private ListTarget GetListTarget(ListResult result, IBindingMetadata metadata, KeyReader joinKey)
{
int bufferIndex = this.Buffer.GetListIndex(metadata, joinKey?.Reference);
metadata = joinKey?.Target ?? metadata;
ListTarget target = result.Targets.FirstOrDefault(t => t.Index == bufferIndex);
if (target != null)
{
return(target);
}
target = new ListTarget()
{
Index = bufferIndex,
Variable = this.GetListVariable(metadata, joinKey),
};
if (joinKey == null && metadata.HasFlag(BindingMetadataFlags.Item))
{
target.NewList = target.NewTarget = metadata.Parent.Composition?.Construct ?? throw BindingException.InvalidConstructor(metadata.Parent);
target.AddMethod = metadata.Parent.Composition.Add;
}
if (joinKey != null)
{
target.NewTarget = Expression.New(target.Variable.Type);
}
if (target.NewTarget != null)
{
result.Targets.Add(target);
}
return(target);
}
