My talk covering Drools and it's eco system, with an eye on where we are going.

2. Mark Proctor
Drools 7.0 Happenings

3. Where we are

4. Where we were mid 2013

5. 6.4
• 6.0 Nov 2013
• 6.4 2016
• Upgrade to Pattern Fly
• Fully redesign the execution server UI
• Improved and augmented process runtime views

6. KIE - Knowledge Is Everything
• Drools
• jBPM
• DashBuilder
• OptaPlanner
• UberFire

7. The Family
Drools
jBPMDashBuilder
OptaPlanner
GWT
Errai
UberFire
Commons
Drools WB
Kie WB

8. Product Maturity Model

9. Remote Java Developer

10. Citizen Developer

11. Associate Process Manager

12. Senior Process Manager

13. Case Management

14. Case Management

15. Usability / Pattern Fly

16. Workbench / Data Modeller

17. Workbench / Data Modeller

18. jBPM Reports

19. jBPM Reports

20. Execution Server

21. Web Stack

22. GWT 2.8 + Errai
• Client-side depending injection
(consistent with CDI).
• Client-side templating.
• 2-way data-binding with Pojos.
• Dynamic runtime modules.
• qualifier annotations to determine
which dependencies.
• a bean satisfies.
• Constructor field and setter injections.
• More CDI and EJB features:
• @Alternative, @Specializes,
@Produced scopes, CDI Events, JPA,
…
• Injecting native Javascript objects into
doc with JSInterop.
• Support for native DOM-based UI
• support for GWT 2.8 + Java8.

23. Errai UI
• Bind Java class elements to elements
in an HTML template.
• Template files can be HTML fragments
or full pages.
• The HTML file is the template.
• The Java class is a template bean
• Data field can be @Bound to the model
and automatically updated

24. Errai - Data Binding

25. UberFire Rich Client Framework
• Perspective
• Screen
• Page Composer
• Security
• Permissions
• Preferences (TODO)

26. Form Builder

27. Old Form Builder

28. Bootstrap Grid Views

29. Bootstrap Grid Views

30. Web Forms for Java Developers
• Pojo
• JPA
• Bean Validator

31. Form Builder Video

32. OpenShift JVM

33. Provisioning the Form app

34. DashBuilder / Page Composer

35. DashBuilder Example

36. DashBuilder Example

37. jBPM Runtime View

38. Data Set Creation
• SQL
• Bean (Java Class)
• CSV
• Elastic Search

39. Data Set Configuration

40. Data Set Preview

41. Advanced Configuration

42. Data Set Explorer

43. Cache

44. DashBuilder Video

45. User Group Admin Video

46. Permissions Video

47. Execution Server

48. Rule Execution Server

49. Rest Call

50. Rest Call

51. Phreak

52. ReteOO
• Node Sharing
• Alpha Indexing
• Beta Indexing
• Tree based graphs
• Modify-in-place
• Property Reactive
• Sub-networks
• Backward Chaining
• Lazy Truth Maintenance
• Heap Based Agenda Queue
• Dynamic Rules

53. Phreak
• Lazy Evaluation
• Isolated Rule Evaluation
• Incremental Goal Oriented Evaluations
• Set Oriented Propagations
• Set Oriented Match (Future)
• Stack baed evaluations, with pause and resume

54. Layered Memory

55. Bit Masks and Linking

56. Bit Masks and Linking

57. Bit Masks and Linking
A
D
R1
Not B
Not
C
R2
R1 = A not ( B not ( C ) ) D
R2 = A B C

58. Thread Safety / State Machine

59. State Transition
INACTIVE
FIRE_ALL_RULES FIRE_UNTIL_HALT
HALTING
EXECUTE_TASK
fireAllRules fireUntilHalt
at rest
halt
halt
executeTask

60. fireAllRules() fireUntilHalt()
sync(engineLock)
isFiring() == trueTrue
False
waitAndEnter(FIRE_ALL_RULES)
fireLoop(RestHandler.FIRE_ALL_RULES)
fireAllRules()
sync(engineLock)
state=FIRE_UNTIL_HALTTrue
False
waitAndEnter(FIRE_UNTIL_HALT)
fireLoop(RestHandler. FIRE_UNTIL_HALT)
fireUntilHalt()

61. fireLoop
Loop
fireLoop(restHandler)
head=takeAll()
returnedFireCount=0
loop=true
flush(head)
head != null
True
head=takeAll()
returnedFireCount = fireNextItem()
False
isFiring() == true
true
false
atRest(head,
returnedFireCount
head=handleRest(restHandler)
isFiring() == true
immediateHalt()
true false
flush(head)

62. FIRE_UNTIL_HALT FIRE_ALL_RULES
sync(queueLock)
RestHander.FIRE_UNTIL_HALT
head = takeAll()
queueLock.wait()
head == null &&
state == FIRE_UNTIL_HALT
true
return head
false
head = takeAll()
The thread will
sleep until the
addEntry notifies it
to wake up
sync(engineLock)
RestHander.FIRE_ALL_RULES
head = takeAll()
state = INACTIVE
head == null
true
return head
false

63. WaitAndEnter immediateHalt
state!=INACTIVE
True
true
engineLock.wait()
state = newState
waitAndEnter(newState)
The thread will sleep until the
immediateHalt is called which
calls the engineLock.notify.
Note this method must always be called from
inside of a sync(engineLock) block.
immedateHalt()
sync(engineLock)
state!=INACTIVE
false
true
state = INACTIVE
engineLock.notify()
This will wake any threads currently
waiting in the waitAndEnter method.

64. Multicore Scalability

65. Immutable Use Cases

66. OOPath

67. Reactive List Comprehension
rule R whenn" +
Adult( $child: /children )
thenn" +
list.add( $child.getName() );
end

68. Nested Reactive List Comprehension
rule R whenn" +
Adult( $child: /children )
thenn" +
list.add( $child.getName() );
end
rule R whenn" +
Man( $toy: /wife/children/toys )
thenn" +
list.add( $toy.getName() );
end

69. No Comprehension or Reactivity
rule R whenn" +
Man( $toy: /wife/children/toys )
thenn" +
list.add( $toy.getName() );
end
rule R whenn" +
Man( $toy: /wife/children.toys )
thenn" +
list.add( $toy.getName() );
end

70. Constraints
rule R whenn" +
Man( $toy: /wife/children{age > 10}/toys )
thenn" +
list.add( $toy.getName() );
end
rule R whenn" +
Man( $toy: /wife/children{age > 10, name.length > 5}.toys )
thenn" +
list.add( $toy.getName() );
end

71. Non Reactivity
rule R whenn" +
Man( $toy: ?/wife/children{age > 10}/toys )
thenn" +
list.add( $toy.getName() );
end
rule R whenn" +
Man( $toy: /wife/children{age > 10}?/toys )
thenn" +
list.add( $toy.getName() );
end

72. Casting and Type Filtering
rule R whenn" +
Man( $name:
/wife/children{ #BabyGirl,
favoriteDollName.startsWith(”A”)
}.name )
thenn" +
list.add( $name );
end

73. Back Referencing
rule R whenn" +
Man( $toy:
/wife/children/toys{ name.length == ../name.length } )
thenn" +
list.add( $toy.getName() );
end

74. Out of Pattern Usage
query isContainedIn( Thing $x, Thing $y )
$y := /$x/children
or
( $z := /$x/children and isContainedIn( $z, $y; ) )
end

75. Pojo Rules

76. DRL Fire Alarm Example

77. Pojo-Rules Fire Alarm Example

78. DRL Fire Alarm Example

79. Pojo-Rules Fire Alarm Example

80. DRLX

81. DRLX
• Java super-set
• Java pre-processing using Antlr Java8.g
• Similar approach to pizza language that gave us generics
• Will output pojo-rules underneath
• But be more succinct and friendly that poco-rules