/// <summary>
/// return the uuid, revision id and the editition for a new created type
/// </summary>
/// <param name="myGraphDBType">the created type</param>
/// <returns></returns>
private Exceptional<Vertex> GetVertexForType(GraphDBType myGraphDBType)
{
if (myGraphDBType == null)
return new Exceptional<Vertex>(new Error_ArgumentNullOrEmpty("The type should not be null."));
var _Vertex = new Vertex();
_Vertex.AddAttribute(DBConstants.DbGraphType, myGraphDBType.Name);
_Vertex.AddAttribute(SpecialTypeAttribute_UUID.AttributeName, myGraphDBType.ObjectUUID);
_Vertex.AddAttribute(SpecialTypeAttribute_REVISION.AttributeName, myGraphDBType.ObjectRevisionID);
_Vertex.AddAttribute(SpecialTypeAttribute_EDITION.AttributeName, myGraphDBType.ObjectEdition);
return new Exceptional<Vertex>(_Vertex);
}
/// <summary>
/// Generate an output for an type with the attributes of the types and all parent types
/// </summary>
/// <param name="myGraphDBType">The db type</param>
/// <param name="myDBContext">The db context</param>
/// <param name="myDepth">If depth == 0 only the type basic attributes will be returned</param>
private Vertex GenerateOutput(DBContext myDBContext, GraphDBType myGraphDBType, Int32 myDepth = 0)
{
var retVal = new Vertex();
if (myGraphDBType.ParentTypeUUID != null)
retVal.AddAttribute("UUID", myGraphDBType.UUID);
retVal.AddAttribute("TYPE", myGraphDBType.GetType().Name);
retVal.AddAttribute("Name", myGraphDBType.Name);
retVal.AddAttribute("Comment", myGraphDBType.Comment);
if (myDepth > 0)
{
retVal.AddAttribute("Properties", new Edge(retVal, GeneratePropertiesOutput(myGraphDBType, myDBContext,
myGraphDBType.Attributes.Where(a => !(a.Value.EdgeType is IReferenceEdge)).Select(kv => kv.Value)))
{
EdgeTypeName = "Property"
});
retVal.AddAttribute("Edges", new Edge(retVal, GenerateEdgesOutput(myGraphDBType, myDBContext, myGraphDBType.Attributes.Where(a => (a.Value.EdgeType is IReferenceEdge) && !a.Value.IsBackwardEdge).Select(kv => kv.Value)))
{
EdgeTypeName = "Edge"
});
retVal.AddAttribute("BackwardEdges", new Edge(retVal, GenerateEdgesOutput(myGraphDBType, myDBContext, myGraphDBType.Attributes.Where(a => (a.Value.EdgeType is IReferenceEdge) && a.Value.IsBackwardEdge).Select(kv => kv.Value)))
{
EdgeTypeName = "Edge"
});
retVal.AddAttribute("UniqueAttributes", new Edge(retVal, GeneratePropertiesOutput(myGraphDBType, myDBContext,
myGraphDBType.GetUniqueAttributes().Select(a => myGraphDBType.GetTypeAttributeByUUID(a))))
{
EdgeTypeName = "Unique"
});
retVal.AddAttribute("MandatoryAttributes", new Edge(retVal, GeneratePropertiesOutput(myGraphDBType, myDBContext,
myGraphDBType.GetMandatoryAttributes().Select(a => myGraphDBType.GetTypeAttributeByUUID(a))))
{
EdgeTypeName = "Mandatory"
});
retVal.AddAttribute("Indices", new Edge(retVal, GenerateIndicesOutput(myGraphDBType, myDBContext))
{
EdgeTypeName = "Index"
});
if (myGraphDBType.ParentTypeUUID != null)
{
var _ParentType = myDBContext.DBTypeManager.GetTypeByUUID(myGraphDBType.ParentTypeUUID);
retVal.AddAttribute("Extends", new Edge(retVal, GenerateOutput(myDBContext, _ParentType, myDepth - 1))
{
EdgeTypeName = "VertexType"
});
}
}
return retVal;
}
