ruleeng

package
v4.2.7 Latest Latest
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 Go to latest Published: Feb 17, 2023 License: MIT Imports: 8 Imported by: 4

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Constants

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Variables

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Functions

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Types

type Action 

type Action interface {
	GetName() string
	GetParameters() map[string]interface{}
	GetMetaData() map[string]interface{}
}

Action ... See DefaultAction for an example implementation.

type ActionDef 

type ActionDef struct {
	Name       Expression            `json:"name"`
	Parameters map[string]Expression `json:"parameters"`
}

ActionDef action definition

func (ActionDef) Resolve 

func (a ActionDef) Resolve(k KnowledgeBase) (DefaultAction, error)

Resolve resolves the ActionDef into a DefaultAction

func (*ActionDef) UnmarshalJSON 

func (a *ActionDef) UnmarshalJSON(data []byte) error

UnmarshalJSON unmashals a quoted json string to Expression

type Case 

type Case struct {
	Name      string      `json:"name"`
	Condition Expression  `json:"condition"`
	Actions   []ActionDef `json:"actions"`
}

Case : pair condition tasks use to compose a Rule

func (*Case) UnmarshalJSON 

func (c *Case) UnmarshalJSON(data []byte) error

UnmarshalJSON unmashals a quoted json string to Expression

type DefaultAction 

type DefaultAction struct {
	Name       string                 `json:"name"`
	Parameters map[string]interface{} `json:"parameters"`
	MetaData   map[string]interface{} `json:"metaData"`
}

DefaultAction default action implementation

func (DefaultAction) GetMetaData 

func (a DefaultAction) GetMetaData() map[string]interface{}

GetMetaData returns the action metadata

func (DefaultAction) GetName 

func (a DefaultAction) GetName() string

GetName returns the action name

func (DefaultAction) GetParameters 

func (a DefaultAction) GetParameters() map[string]interface{}

GetParameters returns the action parameters

type DefaultKnowledgeBase 

type DefaultKnowledgeBase struct {
	// contains filtered or unexported fields
}

DefaultKnowledgeBase default knowledge base implementation

func (*DefaultKnowledgeBase) GetFact 

func (kBase *DefaultKnowledgeBase) GetFact(key string) interface{}

GetFact returns the value of a key in the facts map

func (*DefaultKnowledgeBase) GetFacts 

func (kBase *DefaultKnowledgeBase) GetFacts() map[string]interface{}

GetFacts returns the facts maps of the KBase

func (*DefaultKnowledgeBase) InsertFact 

func (kBase *DefaultKnowledgeBase) InsertFact(key string, value interface{})

InsertFact inserts a key value (fact) in the facts map

func (*DefaultKnowledgeBase) Reset 

func (kBase *DefaultKnowledgeBase) Reset()

Reset removes all de facts and indexs in the KBase

func (*DefaultKnowledgeBase) SetDefaultValues 

func (kBase *DefaultKnowledgeBase) SetDefaultValues(parameters map[string]interface{})

SetDefaultValues add defaults values at the facts in the KBase

func (*DefaultKnowledgeBase) SetFacts 

func (kBase *DefaultKnowledgeBase) SetFacts(facts map[string]interface{})

SetFacts overwrides the facts in the KBase

func (*DefaultKnowledgeBase) String 

func (kBase *DefaultKnowledgeBase) String() string

type DefaultRule 

type DefaultRule struct {
	ID         int64                  `json:"id,omitempty"`
	Cases      []Case                 `json:"cases"`
	Version    int64                  `json:"version"`
	Parameters map[string]interface{} `json:"parameters"`
}

DefaultRule default rule implementation

func (DefaultRule) Execute 

func (r DefaultRule) Execute(k KnowledgeBase) []Action

Execute executes the rule and return the resulting actions

func (DefaultRule) GetDefaultValues 

func (r DefaultRule) GetDefaultValues() map[string]interface{}

GetDefaultValues returns rule default values

func (DefaultRule) GetID 

func (r DefaultRule) GetID() int64

GetID returns the rule id

func (*DefaultRule) UnmarshalJSON 

func (r *DefaultRule) UnmarshalJSON(data []byte) error

UnmarshalJSON unmashals a quoted json string to Expression

type DefaultRuleBase 

type DefaultRuleBase struct {
	// contains filtered or unexported fields
}

DefaultRuleBase default rule base implementation

func (*DefaultRuleBase) ExecuteAll 

func (rBase *DefaultRuleBase) ExecuteAll(k KnowledgeBase) []Action

ExecuteAll executes all the rules of the ruleBase using the knowledgeBase provided as parameter

func (*DefaultRuleBase) ExecuteByID 

func (rBase *DefaultRuleBase) ExecuteByID(ruleID int64, k KnowledgeBase) ([]Action, error)

ExecuteByID executes the rule with the name provide in the parameter 'ruleName' using the knowledgeBase provided as parameter

func (*DefaultRuleBase) ExecuteRules 

func (rBase *DefaultRuleBase) ExecuteRules(ruleIDs []int64, k KnowledgeBase) []Action

ExecuteRules executes a list of the rules of the ruleBase using the knowledgeBase provided as parameter

func (*DefaultRuleBase) GetRules 

func (rBase *DefaultRuleBase) GetRules() map[int64]Rule

GetRules returns the rules

func (*DefaultRuleBase) InsertRule 

func (rBase *DefaultRuleBase) InsertRule(rule Rule)

InsertRule allows to inser a Rule in the rulesBase

func (*DefaultRuleBase) InsertRules 

func (rBase *DefaultRuleBase) InsertRules(rules []Rule)

InsertRules allows to inser a liste of Rules in the rulesBase

func (*DefaultRuleBase) RemoveRule 

func (rBase *DefaultRuleBase) RemoveRule(id int64)

RemoveRule allows to remove a Rule in the rulesBase

func (*DefaultRuleBase) Reset 

func (rBase *DefaultRuleBase) Reset()

Reset removes the rules, tasks and errors of the rulesBase

type Expression 

type Expression string

Expression struct to represent an expression

func (Expression) Evaluate 

func (exp Expression) Evaluate(k KnowledgeBase) (interface{}, error)

Evaluate evaluates the expression and return the result as interface{}

func (Expression) EvaluateAsBool 

func (exp Expression) EvaluateAsBool(k KnowledgeBase) (bool, error)

EvaluateAsBool evaluates the expression and verifies that the result is the type boolean use to evaluate the conditions in the rule cases (conditions should return a boolean as result)

func (Expression) EvaluateAsString 

func (exp Expression) EvaluateAsString(k KnowledgeBase) (string, error)

EvaluateAsString evaluates the expression and verifies that the result is the type string

func (Expression) MarshalJSON 

func (exp Expression) MarshalJSON() ([]byte, error)

MarshalJSON mashals a Expression to a a quoted json string

func (*Expression) UnmarshalJSON 

func (exp *Expression) UnmarshalJSON(data []byte) error

UnmarshalJSON unmashals a quoted json string to Expression

type KnowledgeBase 

type KnowledgeBase interface {
	GetFacts() map[string]interface{}
	InsertFact(key string, value interface{})
	SetFacts(facts map[string]interface{})
	SetDefaultValues(parameters map[string]interface{})
	GetFact(key string) interface{}
	Reset()
}

KnowledgeBase ...

func NewKBase 

func NewKBase() KnowledgeBase

NewKBase builds a KBase

type Rule 

type Rule interface {
	GetID() int64
	GetDefaultValues() map[string]interface{}
	Execute(k KnowledgeBase) []Action
}

Rule ... See DefaultRule for an example implementation.

type RuleBase 

type RuleBase interface {
	GetRules() map[int64]Rule
	InsertRule(r Rule)
	InsertRules(rules []Rule)
	RemoveRule(id int64)
	Reset()
	ExecuteAll(k KnowledgeBase) []Action
	ExecuteRules(ids []int64, k KnowledgeBase) []Action
	ExecuteByID(id int64, k KnowledgeBase) ([]Action, error)
}

RuleBase ...

func NewRBase 

func NewRBase() RuleBase

NewRBase creates a new rulesBase

type RuleEngine 

type RuleEngine struct {
	// contains filtered or unexported fields
}

RuleEngine represents an instance of a rule engine

func NewRuleEngine 

func NewRuleEngine() *RuleEngine

NewRuleEngine builds a RuleEngine

func (*RuleEngine) ExecuteAllRules 

func (engine *RuleEngine) ExecuteAllRules()

ExecuteAllRules executes all the rules in the baseRules using the knowledgeBase

func (*RuleEngine) ExecuteRule 

func (engine *RuleEngine) ExecuteRule(id int64) error

ExecuteRule executes a single rule by id using the knowledgeBase

func (*RuleEngine) ExecuteRules 

func (engine *RuleEngine) ExecuteRules(ids []int64)

ExecuteRules executes all a list of rules in the baseRules using the knowledgeBase

func (*RuleEngine) GetKnowledgeBase 

func (engine *RuleEngine) GetKnowledgeBase() KnowledgeBase

GetKnowledgeBase returns the knowledgeBase in the RuleEngine

func (*RuleEngine) GetResults 

func (engine *RuleEngine) GetResults() []Action

GetResults returns the Results of the rules executed

func (*RuleEngine) GetRulesBase 

func (engine *RuleEngine) GetRulesBase() RuleBase

GetRulesBase returns the RulesBase in the RuleEngine

func (*RuleEngine) InsertKnowledge 

func (engine *RuleEngine) InsertKnowledge(key string, value interface{})

InsertKnowledge inserts a key value (fact) in the knowledgeBase of the RuleEngine

func (*RuleEngine) InsertRule 

func (engine *RuleEngine) InsertRule(r Rule)

InsertRule inserts a rule in the ruleBase of the RuleEngine

func (*RuleEngine) InsertRules 

func (engine *RuleEngine) InsertRules(rules []Rule)

InsertRules inserts a slice of rules in the ruleBase of the RuleEngine

func (*RuleEngine) RemoveRule 

func (engine *RuleEngine) RemoveRule(id int64)

RemoveRule remocves a rule in the ruleBase of the RuleEngine

func (*RuleEngine) Reset 

func (engine *RuleEngine) Reset()

Reset remove all the results added in previous rules execution

func (*RuleEngine) SetKnowledge 

func (engine *RuleEngine) SetKnowledge(k KnowledgeBase)

SetKnowledge overwrites the knowledgeBase in the RuleEngine

func (*RuleEngine) SetRules 

func (engine *RuleEngine) SetRules(r RuleBase)

SetRules overwrites the ruleBase in the RuleEngine

Source Files

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