IReteToken Interface

IInterface
IECSInterfaces.IReteToken
IEToken.TIEToken

Delphi

type
  IReteToken = interface
  ['{2D42CCE7-D296-11D3-B9BB-00C04F8EDA5F}']
  end;

	Name	Description
	AsString	Returns a string representation of the token. This string is NOT parsable but details all the important information of the token
	Count	Returns the number of facts being tracked by this token and its parent tokens. The fact for this token may be accessed through the Fact property. The facts for the parent tokens can either be obtained by chaining up the Parent property or using the Facts property
	Fact	Contains the fact for the token.
	Facts[Integer]	Provides access to all the facts in the token chain.
	NegatedCount	Returns the number of "not"s before the fact. The rete network uses the NegatedCount property to figure out whether it is pattern matching the the negation of the fact or the presence of the fact
	Parent	Returns the ancestor of the current token. The current token when it is created inherits most of its properties from its parent token. The current token keeps its Count property equal to all the tokens in the chain, including itself
	SortCode	Used by the rete network to more efficiently traverse the network and to store the tokens within the network
	Strength	Returns the strength of the token as it passes through the rete network.
	Tag	Describes the purpose of the token with the rete network, what action the TReteNetwork component should take with the token. The Tag property should equal, usually, the parent token's tag value
	ToFactsString	Returns a comma delimited string of the fact ids of the Facts in the token chain

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	Name	Description
	Equals(IReteToken)	Compares the current token with the source token and determines if they are equal. Tokens are equal if they share the same property values and their Parents share the same property values
	GetCount	Accessor method for Count property
	GetFact	Accessor method for Fact property
	GetFacts(Integer)	Accessor method for Facts property
	GetNegatedCount	Accessor method for NegatedCount property
	GetParent	Accessor method for Parent property
	GetSortCode	Accessor method for SortCode property
	GetStrength	Accessor method for Strength property
	GetTag	Accessor method for Tag property
	GetToFactsString	Returns a comma delimited string of the fact ids of the Facts in the token chain
	get_AsString	Represents method get_AsString.
	get_Count	Represents method get_Count.
	get_Fact	Represents method get_Fact.
	get_Facts(Integer)	Represents method get_Facts(Integer).
	get_NegatedCount	Represents method get_NegatedCount.
	get_Parent	Represents method get_Parent.
	get_SortCode	Represents method get_SortCode.
	get_Strength	Represents method get_Strength.
	get_Tag	Represents method get_Tag.
	get_ToFactsString	Represents method get_ToFactsString.
	SetNegatedCount(Integer)	Accessor method for NegatedCount property
	SetStrength(Single)	Accessor method for Strength property
	SetTag(TTokenAction)	Accessor method for Tag property
	set_NegatedCount(Integer)	Represents method set_NegatedCount(Integer).
	set_Strength(Single)	Represents method set_Strength(Single).
	set_Tag(TTokenAction)	Represents method set_Tag(TTokenAction).
	ToString	Returns a string representation of the token. This string is NOT parsable but details all the important information of the token

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The Rete network is a network or graph structure for efficiently structuring rules and facts so that the pattern matching process in inference is efficient. The IReteTokens are passed around the network to update the network, add to the network, and clear the network. There are a fundamental method for communication within the rete network and track whether facts and whether they are being asserted or retracted.

The TIEToken class implements this interface for the IECS

Reference

•IECSInterfaces

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Reference