RulesEngine (Hawkular Alerts Engine 0.0.2 API)

All Known Implementing Classes:

DroolsRulesEngineImpl
```
public interface RulesEngine
```
Author:

jshaughn

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method and Description
`void`	`addData(Collection<Data> data)` Add to the accumulated `Data` to be processed the next time `fire()` is called.
`void`	`addData(Data data)` Add to the accumulated `Data` to be processed the next time `fire()` is called.
`void`	`addFact(Object fact)` Insert the provided `fact` into the rules engine.
`void`	`addFacts(Collection facts)` Insert the provided `fact` into the rules engine.
`void`	`addGlobal(String name, Object global)`
`void`	`clear()` Deletes all Facts from the rules engine.
`void`	`fire()` Fire all rules given the current set of added definitions and the currently accumulated `Data`.
`void`	`fireNoData()` Fire all rules given the current set of added definitions and facts.
`Object`	`getFact(Object fact)`
`void`	`removeFact(Object fact)` Retrieves the FactHandle for `fact` and then deletes the fact from the rules engine.
`void`	`removeFacts(Collection facts)` Retrieves the FactHandles for `facts` and then deletes the facts from the rules engine.
`void`	`removeFacts(Predicate<Object> factFilter)` Retrieves the FactHandles for `facts` matching the `factFilter` and then deletes the facts from the rules engine.
`void`	`removeGlobal(String name)`
`void`	`reset()` Completely reset the rules engine session.
`void`	`updateFact(Object fact)` Retrieves the FactHandle for `fact` and then updates the fact in the rules engine.

- Method Detail
  - addGlobal
```
void addGlobal(String name,
               Object global)
```
  - removeGlobal
```
void removeGlobal(String name)
```
  - addFact
```
void addFact(Object fact)
```
    Insert the provided fact into the rules engine. This method is not appropriate for Data. For Data use addData(Data).
    
    Parameters:
    
    fact - the fact
    
    Throws:
    
    IllegalArgumentException - If fact instanceof Data.
  - getFact
```
Object getFact(Object fact)
```
    Parameters:
    
    fact - the fact
    
    Returns:
    
    The implementation-specific Fact representing object, or null if object is not a Fact in the rules engine.
  - removeFact
```
void removeFact(Object fact)
```
    Retrieves the FactHandle for fact and then deletes the fact from the rules engine.
    
    Parameters:
    
    fact - the fact
  - updateFact
```
void updateFact(Object fact)
```
    Retrieves the FactHandle for fact and then updates the fact in the rules engine.
    
    Parameters:
    
    fact - the fact
  - addFacts
```
void addFacts(Collection facts)
```
    Insert the provided fact into the rules engine. This method is not appropriate for Data. For Data use addData(Collection).
    
    Parameters:
    
    facts - the facts
    
    Throws:
    
    IllegalArgumentException - If any fact instanceof Data.
  - removeFacts
```
void removeFacts(Collection facts)
```
    Retrieves the FactHandles for facts and then deletes the facts from the rules engine.
    
    Parameters:
    
    facts - the facts
  - removeFacts
```
void removeFacts(Predicate<Object> factFilter)
```
    Retrieves the FactHandles for facts matching the factFilter and then deletes the facts from the rules engine.
    
    Parameters:
    
    factFilter - the factFilter
  - addData
```
void addData(Data data)
```
    Add to the accumulated Data to be processed the next time fire() is called. After the rules are fired on the accumulated Data it will be cleared.
    
    Parameters:
    
    data - the data
  - addData
```
void addData(Collection<Data> data)
```
    Add to the accumulated Data to be processed the next time fire() is called. After the rules are fired on the accumulated Data it will be cleared.
    
    Parameters:
    
    data - the data
  - fire
```
void fire()
```
    Fire all rules given the current set of added definitions and the currently accumulated Data.
  - fireNoData
```
void fireNoData()
```
    Fire all rules given the current set of added definitions and facts. Do not add the currently accumulated Data. This is an advanced feature and used only when Facts are manually manipulated.
  - clear
```
void clear()
```
    Deletes all Facts from the rules engine.
  - reset
```
void reset()
```
    Completely reset the rules engine session. Disposes of any existing session before creating a new session.

Interface RulesEngine

Method Summary

Method Detail

addGlobal

removeGlobal

addFact

getFact

removeFact

updateFact

addFacts

removeFacts

removeFacts

addData

addData

fire

fireNoData

clear

reset