private Lazy <IRelationMetadata> CreateRecursor(RelationMetadata metadata)
{
if (metadata.HasFlag(RelationMetadataFlags.Item))
{
IRelationMetadata recursiveParent = this.GetRecursiveParent(metadata);
if (recursiveParent != null)
{
string recursivePath = metadata.Notation.Path(recursiveParent.Identity.Name, metadata.Parent.Identity.Name);
string otherPath = metadata.Notation.Combine(metadata.Identity.Name, recursivePath);
MetadataIdentity otherId = metadata.Identity.Push(recursivePath);
return(new Lazy <IRelationMetadata>(() => this.GetMetadata(metadata.Schema, otherId)));
}
}
else if (metadata.Owner.Recursor != null)
{
IRelationContract contract = this.GetContract(metadata);
if (contract != null && metadata.Owner.Type.Equals(contract.ItemType))
{
return(new Lazy <IRelationMetadata>(() => metadata.Owner));
}
}
return(null);
}
private RelationMetadata CreateItem(RelationMetadata parent)
{
if (parent.Owner.HasFlag(RelationMetadataFlags.Recursive))
{
MemberInfo parentMember = parent.Owner.Parent?.Member;
MemberInfo thisMember = parent.Member;
if (parentMember != null && parentMember.Equals(thisMember))
{
return(null);
}
}
IRelationContract contract = this.GetContract(parent);
if (contract == null)
{
return(null);
}
MetadataIdentity itemId = parent.Identity.Push(contract.ItemName ?? "Item");
RelationMetadata metadata = new RelationMetadata(parent.Schema, itemId)
{
Parent = parent,
Type = contract.ItemType,
Flags = RelationMetadataFlags.Item,
ReadIndex = contract.ReadIndex,
WriteIndex = contract.WriteIndex,
Depth = parent.Depth + 1,
};
metadata.Owner = metadata;
metadata.Item = this.CreateItem(metadata);
metadata.Properties = this.CreateLazy(() => this.CreateProperties(metadata));
metadata.Annotations = this.CreateAnnotations(metadata).ToList();
if (contract.ReadIndex != null)
{
metadata.Flags |= RelationMetadataFlags.Readable;
}
if (contract.WriteIndex != null)
{
metadata.Flags |= RelationMetadataFlags.Writable;
}
if (metadata.Item != null)
{
metadata.Flags |= RelationMetadataFlags.List;
}
return(metadata);
}
private RelationMetadata CreateProperty(RelationMetadata parent, MemberInfo memberInfo)
{
MetadataIdentity propertyId = parent.Identity.Push(memberInfo.Name);
RelationMetadata metadata = new RelationMetadata(parent.Schema, propertyId)
{
Type = this.GetMemberType(memberInfo),
Parent = parent,
Member = memberInfo,
Owner = parent.Owner,
Flags = RelationMetadataFlags.Property,
Depth = parent.Depth,
};
metadata.Item = this.CreateItem(metadata);
metadata.Properties = this.CreateLazy(() => this.CreateProperties(metadata));
metadata.Annotations = this.CreateAnnotations(metadata).ToList();
if (metadata.Item != null)
{
metadata.Flags |= RelationMetadataFlags.List;
}
if (memberInfo is PropertyInfo pi)
{
if (pi.CanRead)
{
metadata.Flags |= RelationMetadataFlags.Readable;
}
if (pi.CanWrite)
{
metadata.Flags |= RelationMetadataFlags.Writable;
}
}
else if (memberInfo is FieldInfo)
{
metadata.Flags |= RelationMetadataFlags.Readable | RelationMetadataFlags.Writable;
}
parent.Schema.AddMetadata <IRelationMetadata>(metadata);
if (metadata.Item != null)
{
parent.Schema.AddMetadata <IRelationMetadata>(metadata.Item);
}
this.AddRecursors(metadata);
return(metadata);
}
private Schema CreateSchema(Type modelType)
{
Schema newSchema = new Schema(this, modelType);
foreach (IMetadataBuilder builder in this)
{
MetadataIdentity newIdentity = new MetadataIdentity(newSchema, this.Notation.Model());
MetadataBuilderContext context = new MetadataBuilderContext(newIdentity, newSchema);
builder.Initialize(context);
}
return(newSchema);
}
private RelationMetadata CreateItem(IMetadataBuilderContext context, RelationMetadata parent)
{
IRelationListContract contract = this.GetListContract(parent);
if (contract == null)
{
return(null);
}
MetadataIdentity itemId = parent.Identity.Child(contract.ItemName ?? "Item");
RelationMetadata metadata = new RelationMetadata(itemId)
{
Parent = parent,
Type = contract.ItemType,
Flags = RelationMetadataFlags.Item | RelationMetadataFlags.Property,
ReadIndex = contract.ReadIndex,
WriteIndex = contract.WriteIndex,
};
metadata.MemberOf = metadata;
metadata.Item = this.CreateItem(context, metadata);
metadata.Properties = this.CreateLazy(() => this.CreateProperties(context, metadata));
metadata.Annotations = this.CreateAnnotations(metadata).ToList();
if (this.IsMetadataRecursive(metadata))
{
metadata.Flags |= RelationMetadataFlags.Recursive;
}
if (contract.ReadIndex != null)
{
metadata.Flags |= RelationMetadataFlags.Readable;
}
if (contract.WriteIndex != null)
{
metadata.Flags |= RelationMetadataFlags.Writable;
}
if (metadata.Item != null)
{
metadata.Flags |= RelationMetadataFlags.List;
}
context.AddMetadata <IRelationMetadata>(metadata);
return(metadata);
}
private RelationMetadata CreateProperty(IMetadataBuilderContext context, RelationMetadata parent, MemberInfo memberInfo)
{
MetadataIdentity attributeId = parent.Identity.Child(memberInfo.Name);
RelationMetadata metadata = new RelationMetadata(attributeId)
{
Type = this.GetMemberType(memberInfo),
Parent = parent,
Member = memberInfo,
MemberOf = parent.MemberOf,
Flags = RelationMetadataFlags.Property,
};
metadata.Item = this.CreateItem(context, metadata);
metadata.Properties = this.CreateLazy(() => this.CreateProperties(context, metadata));
metadata.Annotations = this.CreateAnnotations(metadata).ToList();
if (metadata.Item != null)
{
metadata.Flags |= RelationMetadataFlags.List;
}
if (this.IsMetadataRecursive(metadata))
{
metadata.Flags |= RelationMetadataFlags.Recursive;
}
if (memberInfo is PropertyInfo pi)
{
if (pi.CanRead)
{
metadata.Flags |= RelationMetadataFlags.Readable;
}
if (pi.CanWrite)
{
metadata.Flags |= RelationMetadataFlags.Writable;
}
}
else if (memberInfo is FieldInfo)
{
metadata.Flags |= RelationMetadataFlags.Readable | RelationMetadataFlags.Writable;
}
context.AddMetadata <IRelationMetadata>(metadata);
return(metadata);
}
private IRelationMetadata GetMetadata(IMetadataBuilderContext context, MetadataIdentity identity)
{
MetadataIdentity parentIdentity = identity.Parent();
IRelationMetadata parent = context.GetMetadata <IRelationMetadata>(parentIdentity.Name) ?? this.GetMetadata(context, parentIdentity);
if (parent == null)
{
return(null);
}
else if (parent.Item != null && parent.Item.Identity.Equals(identity))
{
return(parent.Item);
}
return(parent.Properties.FirstOrDefault(m => m.Identity.Equals(identity)));
}
internal IRelationMetadata GetMetadata(Schema schema, MetadataIdentity identity)
{
MetadataIdentity parentIdentity = identity.Pop();
IRelationMetadata parent = schema.GetCachedMetadata <IRelationMetadata>(parentIdentity.Name) ?? this.GetMetadata(schema, parentIdentity);
if (parent == null)
{
return(null);
}
else if (parent.Item != null && parent.Item.Identity.Equals(identity))
{
return(parent.Item);
}
return(parent.Properties.FirstOrDefault(m => m.Identity.Equals(identity)));
}
public static MetadataNotFoundException FromMetadata <TMetadata>(MetadataIdentity identity, string message = null, Exception innerException = null)
where TMetadata : IMetadata
{
string fullMessage;
if (identity != null)
{
fullMessage = $"Metadata of type '{typeof(TMetadata).GetSanitizedName()}' not found for property '{identity.Name}' in schema '{identity.Schema.Model.GetSanitizedFullName()}'.";
}
else
{
fullMessage = $"Metadata of type '{typeof(TMetadata).GetSanitizedName()}' not found.";
}
if (message != null || innerException?.Message != null)
{
fullMessage += $" {message}";
}
return(new MetadataNotFoundException(fullMessage, innerException));
}
public TMetadata Lookup <TMetadata>(string name)
where TMetadata : IMetadata
{
MetadataKey key = this.CreateKey <TMetadata>(name);
ReaderWriterLockSlim slim = this.GetLock <TMetadata>();
try
{
slim.EnterReadLock();
if (this.entries.TryGetValue(key, out object value))
{
return((TMetadata)value);
}
}
catch (LockRecursionException ex)
{
throw MetadataBuilderException.NoRecursion <TMetadata>(name, ex);
}
finally
{
if (slim.IsReadLockHeld)
{
slim.ExitReadLock();
}
}
slim.EnterWriteLock();
try
{
MetadataIdentity identity = new MetadataIdentity(this, name);
IRelationMetadata relation = this.GetCachedMetadata <IRelationMetadata>(name) ?? this.Store.RelationBuilder.GetMetadata(this, identity);
if (relation == null)
{
return(default);
internal void Initialize(Schema schema, Type modelType)
{
MetadataIdentity identity = new MetadataIdentity(schema);
RelationMetadata metadata = new RelationMetadata(schema, identity)
{
Flags = RelationMetadataFlags.Model | RelationMetadataFlags.Readable,
Type = modelType,
};
metadata.Owner = metadata;
metadata.Properties = this.CreateLazy(() => this.CreateProperties(metadata));
metadata.Depth = 0;
metadata.Annotations = this.CreateAnnotations(metadata).ToList();
metadata.Item = this.CreateItem(metadata);
if (metadata.Item != null)
{
metadata.Flags |= RelationMetadataFlags.List;
}
schema.AddMetadata <IRelationMetadata>(metadata);
}
public static MetadataKey FromIdentity <TMetadata>(MetadataIdentity identity) => new MetadataKey(typeof(TMetadata), identity.Name, identity.Schema.Notation.Comparer);
public RelationMetadata(MetadataIdentity identity)
{
this.Identity = identity ?? throw new ArgumentNullException(nameof(identity));
}
public MetadataBuilderContext(MetadataIdentity identity, Schema schema)
{
this.Identity = identity ?? throw new ArgumentNullException(nameof(identity));
this.Schema = schema ?? throw new ArgumentNullException(nameof(schema));
}
public RelationMetadata(Schema schema, MetadataIdentity identity)
{
this.Schema = schema ?? throw new ArgumentNullException(nameof(identity));
this.Notation = schema.Notation;
this.Identity = identity ?? throw new ArgumentNullException(nameof(identity));
}
