context

package

v1.0.2 Latest Latest Go to latest Published: Nov 4, 2019 License: Apache-2.0 Imports: 5 Imported by: 2

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var (
	FactNotFoundError  = errors.New("Fact not found")
	FactRetractedError = errors.New("Fact is retracted")
)

This section is empty.

type DataContext struct {
	ObjectStore         map[string]interface{}
	Retracted           []string
	VariableChangeCount uint64
}

DataContext holds all structs instance to be used in rule execution environment.

func NewDataContext() *DataContext

NewDataContext will create a new DataContext instance

func (ctx *DataContext) Add(key string, obj interface{}) error

Add will add struct instance into rule execution context

func (ctx *DataContext) ExecMethod(methodName string, args []reflect.Value) (reflect.Value, error)

ExecMethod will execute instance member variable using the supplied arguments.

func (ctx *DataContext) GetType(variable string) (reflect.Type, error)

GetType will extract type information of data in this context.

func (ctx *DataContext) GetValue(variable string) (reflect.Value, error)

GetValue will get member variables Value information. Used by the rule execution to obtain variable value.

func (ctx *DataContext) IsRestracted(key string) bool

IsRestracted checks if a key fact is currently retracted.

func (ctx *DataContext) Reset()

Reset will un-retract all fact, making them available for evaluation and modification.

func (ctx *DataContext) Retract(key string)

Retract temporary retract a fact from data context, making it unavailable for evaluation or modification.

func (ctx *DataContext) SetValue(variable string, newValue reflect.Value) error

SetValue will set variable value of an object instance in this data context, Used by rule script to set values.

type KnowledgeContext struct {
}

type RuleContext struct {
}