TypedListRelationshipEdge Class

Specific relationship edge which represents a normal relationship edge between two aliased entities in a typedlist. It's a directed edge, between two EntityAlias elements over an existing NormalRelationship instance.

Inheritance Hierarchy

SystemObject
  SD.Tools.Algorithmia.GraphsEdgeEntityAlias
    SD.Tools.Algorithmia.GraphsDirectedEdgeEntityAlias
      SD.LLBLGen.Pro.ApplicationCore.EntityModel.TypedListsTypedListRelationshipEdge

Namespace: SD.LLBLGen.Pro.ApplicationCore.EntityModel.TypedLists
Assembly: SD.LLBLGen.Pro.ApplicationCore (in SD.LLBLGen.Pro.ApplicationCore.dll) Version: 5.10.0.0 (5.10.0)

Syntax

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public class TypedListRelationshipEdge : DirectedEdge<EntityAlias>, 
	ISerializableToXml, IRelationshipEdge, INotifyAsChanged, INotifyAsRemoved, INotifyPropertyChanged

Public Class TypedListRelationshipEdge
	Inherits DirectedEdge(Of EntityAlias)
	Implements ISerializableToXml, IRelationshipEdge, INotifyAsChanged, INotifyAsRemoved, 
	INotifyPropertyChanged

The TypedListRelationshipEdge type exposes the following members.

Constructors

	Name	Description
	TypedListRelationshipEdge	Initializes a new instance of the TypedListRelationshipEdge class.

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Properties

	Name	Description
	EndVertex	Gets the end vertex of the edge. (Inherited from EdgeTVertex.)
	FullDescription	Gets the full description.
	HintForJoins	Gets or sets the hint for joins. This hint is defined as the join hint to join StartVertex to EndVertex, in the form: EndVertex JoinHint Join StartVertex.
	IsDirected	Gets a value indicating whether this edge is directed. If true, the edge is directed from startVertex to endVertex and is seen as an edge only between startVertex and endVertex, not between endVertex and startVertex. If false, this edge isn't considered a directed edge and is seen as an edge between startVertex and endVertex and also between endVertex and startVertex. (Inherited from EdgeTVertex.)
	RepresentedRelationship	Gets the represented relationship.
	RepresentedRelationshipAsString	Gets the represented relationship as string.
	StartVertex	Gets the start vertex of the edge. (Inherited from EdgeTVertex.)
	StartVertexIsRelationshipStartVertex	Gets a value indicating whether the start vertex of this relationship is the start vertex of the represented relationship (true) or the end vertex of the represented relationship (false).

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Methods

	Name	Description
	Equals	Determines whether the specified Object is equal to the current Object. (Overrides ObjectEquals(Object).)
	Finalize	Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object.)
	GetHashCode	Serves as a hash function for a particular type. (Overrides ObjectGetHashCode.)
	GetRelationshipFieldsFromEndEntityAlias	Gets the relationship fields from start entity alias. This can be the PK fields if the start entity alias is the pk side, otherwise the fk fields.
	GetRelationshipFieldsFromStartEntityAlias	Gets the relationship fields from start entity alias. This can be the PK fields if the start entity alias is the pk side, otherwise the fk fields.
	GetType	Gets the Type of the current instance. (Inherited from Object.)
	MemberwiseClone	Creates a shallow copy of the current Object. (Inherited from Object.)
	SerializeToWriter	Serializes the data in this class to the serializer passed in
	ToString	Returns a String that represents the current Object. (Inherited from DirectedEdgeTVertex.)

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Events

	Name	Description
	HasBeenChanged	Raised when the implementing element has been changed
	HasBeenRemoved	Raised when the implementing element has been removed from its container
	PropertyChanged	Occurs when a property value changes.

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Explicit Interface Implementations

	Name	Description
	IRelationshipEdgeEndNavigatorIsHidden	Returns true if the end navigator is empty/hidden
	IRelationshipEdgeFullDescription	Gets the full description.
	IRelationshipEdgeLeftNavigator	Gets the left navigator which is the navigator of the left side of the relationship.
	IRelationshipEdgeLeftQuantifierString	Gets the left quantifier string for the relationship, e.g. if the relationshiptype is 1:n, the left quantifier is 1, the right quantifier is '*'
	IRelationshipEdgeLeftVertexFullName	Gets the Full name of the left vertex of the relationship
	IRelationshipEdgeModelOnly	Gets or sets a value indicating whether this relationship is a 'model only' (true) relationship or a full relationship (false). Full relationships require a foreign key constraint in the relational model data.
	IRelationshipEdgeRelationshipType	Gets the type of the relationship.
	IRelationshipEdgeRightNavigator	Gets the right navigator, which is the navigator of the right side of the relationship.
	IRelationshipEdgeRightQuantifierString	Gets the right quantifier string for the relationship, e.g. if the relationshiptype is 1:n, the left quantifier is 1, the right quantifier is '*'
	IRelationshipEdgeRightVertexFullName	Gets the Full name of the right vertex of the relationship
	IRelationshipEdgeStartNavigatorIsHidden	Returns true if the start navigator is empty/hidden

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Remarks

The StartVertex is connected to the EndVertex over this TypedListRelatioshipEdge instance using the normalrelationshipedge represented by the instance of this class. This means that the StartVertex is the entityalias joined to the set in which EndVertex is already part of. Example: NormalRelationship: Order m:1 Customer. LLBLGen Pro stores the same relationship for both sides so both Customer and Order have the order m:1 customer relationship. In the typedlist, Order is already present, and Customer is added. This means that a new TypedListRelationshipEdge is added: Customer -> Order as Order is already in the set and Customer is joined with that set. If 'Right' is specified as HintForJoins, it means Order Right Join Customer, as that's what the TypedListRelationshipEdge represents. For the underlying relationship, it depends on the StartVertexIsRelationshipStartVertex if the HintForJoins of the TypedListRelationshipEdge is directly usable on the underlying relationship: if the underlying relationship is Customer 1:n Order, and the TypedListRelationshipEdge is Customer -> Order with a HintForJoins 'Right', it means Customer Left Join Order for the underlying relationship. In short: the TypedListRelationshipEdge.StartVertex is the right side of the join statement, the TypedListRelationshipEdge.EndVertex is the left side of the join statement, so EndVertex HintForJoins JOIN StartVertex. In the 'Add customer to typedlist with Order' example, StartVertex is 'Customer' (as it's the alias added to the typedlist) and EndVertex is 'Order', as it is the alias already in the TypedList, which results in Order Right Join Customer, if the HintForJoins is set to 'Right'. Code generation engines have to take this into account when consuming a typedlist relationship edge.

Reference

SD.LLBLGen.Pro.ApplicationCore.EntityModel.TypedLists Namespace