private ProjectionMetadataFlags GetFlags(ProjectionMetadata metadata)
{
IdAttribute id = metadata.Relation.Annotations?.OfType <IdAttribute>().FirstOrDefault();
OutAttribute out0 = metadata.Relation.Annotations?.OfType <OutAttribute>().FirstOrDefault();
InAttribute in0 = metadata.Relation.Annotations?.OfType <InAttribute>().FirstOrDefault();
IReferenceMetadata reference = metadata.Identity.GetMetadata <IReferenceMetadata>();
ProjectionMetadataFlags flags = ProjectionMetadataFlags.None;
if (id != null)
{
flags |= ProjectionMetadataFlags.Identity;
}
if (in0 != null || out0 != null)
{
flags |= in0 != null ? ProjectionMetadataFlags.Input : ProjectionMetadataFlags.None;
flags |= out0 != null ? ProjectionMetadataFlags.Output : ProjectionMetadataFlags.None;
}
else if (id != null)
{
flags |= ProjectionMetadataFlags.Output;
}
else if (reference != null && reference.HasAnyFlag(ReferenceMetadataFlags.Key))
{
flags |= ProjectionMetadataFlags.Input | ProjectionMetadataFlags.Output;
}
else
{
flags |= ProjectionMetadataFlags.Input;
}
return(flags);
}
private ProjectionMetadata CreateAndAddMetadata(IMetadataBuilderContext context, IRelationMetadata relation)
{
ProjectionMetadata metadata = this.CreateBaseMetadata(context, relation);
context.AddMetadata <IProjectionMetadata>(metadata);
return(metadata);
}
private ProjectionMetadata CreateBaseMetadata(IMetadataBuilderContext context, IRelationMetadata relation)
{
ProjectionMetadata metadata = new ProjectionMetadata(relation);
metadata.Properties = this.CreateLazy(() => this.CreateProperties(context, metadata));
metadata.Item = this.CreateItem(context, metadata);
metadata.Flags = this.GetFlags(metadata);
return(metadata);
}
private void CreateTableMetadata(ProjectionMetadata metadata)
{
ITableMetadata table = metadata.Identity.Lookup <ITableMetadata>();
if (table != null)
{
metadata.Table = table.HasFlag(TableMetadataFlags.Table) ? table : table.Owner;
metadata.Column = table.HasFlag(TableMetadataFlags.Column) ? table : null;
}
}
private ProjectionMetadata CreateItem(IMetadataBuilderContext context, ProjectionMetadata parent)
{
if (parent.Relation.Item != null)
{
ProjectionMetadata metadata = this.GetMetadata(context, parent.Relation.Item, parent);
metadata.List = parent;
return(metadata);
}
return(null);
}
private ProjectionMetadata CreateItem(IMetadataBuilderContext context, ProjectionMetadata parent)
{
if (parent.Relation.Item != null)
{
ProjectionMetadata metadata = this.CreateBaseMetadata(context, parent.Relation.Item);
metadata.List = parent;
context.AddMetadata <IProjectionMetadata>(metadata);
return(metadata);
}
return(null);
}
private ProjectionMetadata GetMetadata(IMetadataBuilderContext context, IRelationMetadata relation, IProjectionMetadata parent)
{
ProjectionMetadata metadata = new ProjectionMetadata(relation);
context.AddMetadata <IProjectionMetadata>(metadata);
metadata.Properties = this.CreateLazy(() => this.CreateProperties(context, metadata));
metadata.Item = this.CreateItem(context, metadata);
metadata.Flags = this.GetFlags(metadata);
this.CreateTableMetadata(metadata);
this.CreateInputMetadata(context, metadata, parent);
return(metadata);
}
private void CreateInputMetadata(IMetadataBuilderContext context, ProjectionMetadata metadata, IProjectionMetadata parent)
{
if (parent?.Reference != null)
{
IEnumerable <IReference> references = parent.Reference.References.Where(r => r.HasFlag(ReferenceFlags.Foreign) && !r.HasFlag(ReferenceFlags.Self));
foreach (IReference reference in references.OrderBy(r => r.Priority))
{
int valueIndex = reference.Key.Properties.IndexOf(m => m.Identity.Equals(metadata.Identity));
if (valueIndex > -1 && !reference.Other.Metadata.Relation.HasFlag(RelationMetadataFlags.Recursive))
{
IReferenceMetadata valueMetadata = reference.Other.Key.Properties[valueIndex];
metadata.Input = new Lazy <IProjectionMetadata>(() => this.GetMetadata(context, valueMetadata.Relation));
metadata.Flags |= ProjectionMetadataFlags.Cascade;
return;
}
}
}
metadata.Input = new Lazy <IProjectionMetadata>(() => metadata);
}
private IEnumerable <ProjectionMetadata> CreateProperties(IMetadataBuilderContext context, ProjectionMetadata parent)
{
foreach (IRelationMetadata property in parent.Relation.Properties)
{
yield return(this.CreateAndAddMetadata(context, property));
}
}
