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Introducing Activiti: A Glimpse and [Hopefully] a Hook

Introducing Activiti: A Glimpse and [Hopefully] a Hook

Given at the Vienna DevFest 2012

Rafael Cordones

November 10, 2012
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  1. Introducing
    Rafael Cordones, [email protected], @rafacm
    DevFest 2012, November 10th, 2012, Vienna
    A Glimpse and [Hopefully] a Hook*
    * “A Glimpse and a Hook“: http://www.randsinrepose.com/archives/2007/02/25/a_glimpse_and_a_hook.html

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  2. DevFest 2012 – November 10th 2012 | Vienna
    plexiti · pragmatic software productions
    Agenda
    n Introduction
    n How did we all get here?
    n Software Development,
    Business Processes and
    the Business Process Modeling Notation (BPMN 2.0)
    n Meet Activiti… and friends!
    n Conclusion and discussion
    2

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  3. DevFest 2012 – November 10th 2012 | Vienna
    plexiti · pragmatic software productions
    How did I get here?
    n Some background information about myself:
    n Barcelonian by birth, European by choice. Currently living in
    Vienna.
    n Experience working for small companies developing web-based
    software products for business customers
    n Inoculated against the Not Invented Here syndrome and instead
    prefer to embrace a Proudly Found Elsewhere attitude!
    n Java (ecosystem) developer.
    n Disclosure: I’m a partner at plexiti which is itself a partner
    with camunda and signavio, companies that develop
    products I mention in this presentation.
    3

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  4. DevFest 2012 – November 10th 2012 | Vienna
    plexiti · pragmatic software productions
    How did you get here?
    n How many of you have experience with Java development?
    n How many of you are familiar with integration projects (B2B)?
    n How many of you are familiar with Activiti, jBPM or other business
    process engines?
    4

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  5. DevFest 2012 – November 10th 2012 | Vienna
    plexiti · pragmatic software productions
    How did we get here?
    n What is a “computer”?
    5
    Source: “An Illustrated History of Computers”: http://www.computersciencelab.com/ComputerHistory/History.htm

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  6. DevFest 2012 – November 10th 2012 | Vienna
    plexiti · pragmatic software productions
    How did we get here?
    n The first (never built) general-purpose device that could be programmed.
    Charles Babbage's blueprint for the Analytical Engine from the 1830s:
    6
    Seems it will be built after all!
    http://plan28.org/
    Source:
    http://gregoryreher.com/2010/11/building-charles-babbages-analytical-engine/

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  7. DevFest 2012 – November 10th 2012 | Vienna
    plexiti · pragmatic software productions
    How did we get here?
    n The first electronic general-purpose digital computer: the ENIAC (1946)
    7
    Text
    Source: http://en.wikipedia.org/wiki/ENIAC

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  8. DevFest 2012 – November 10th 2012 | Vienna
    plexiti · pragmatic software productions
    How did we get here?
    n The first electronic general-purpose digital computer: the ENIAC (1946)
    7
    Text
    Source: http://en.wikipedia.org/wiki/ENIAC
    Flexible plug-in architectures are
    not that new after all!

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  9. DevFest 2012 – November 10th 2012 | Vienna
    plexiti · pragmatic software productions
    How did we get here?
    n “Hello World” in Assembly language for the x86 and Java:
    8
    section .data
    str: db 'Hello world!', 0Ah
    str_len: equ $ - str
    section .text
    global _start
    _start:
    mov eax, 4
    mov ebx, 1
    mov ecx, str
    mov edx, str_len
    int 80h
    mov eax, 1
    mov ebx, 0
    int 80h
    class HelloWorldApp {
    public static void main(String[] args) {
    String msg = "Hello World!";
    System.out.println(msg);
    }
    }
    Question: Is this all about lines of code?
    Answer: No. It’s about the level of abstraction
    at which a language (or technology) allows
    you to express and evaluate concepts.
    Sources:
    http://en.wikipedia.org/wiki/X86_assembly_language#.22Hello_world.
    21.22_program_for_Linux_in_NASM_style_assembly
    http://en.wikipedia.org/wiki/Java_(programming_language)#Hello_world

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  10. DevFest 2012 – November 10th 2012 | Vienna
    plexiti · pragmatic software productions
    How did we get here?
    9
    Source: http://en.wikipedia.org/wiki/Thomas_J._Watson
    "I think there is a world market for
    maybe five computers"
    Mis-attributed to Thomas J. Watson
    (Chairman of the Board of IBM, 1943)

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  11. DevFest 2012 – November 10th 2012 | Vienna
    plexiti · pragmatic software productions
    How did we get here?
    9
    Apple
    Open Shift
    Amazon
    Facebook
    ?
    Google
    Source: http://en.wikipedia.org/wiki/Thomas_J._Watson
    "I think there is a world market for
    maybe five computers"
    Mis-attributed to Thomas J. Watson
    (Chairman of the Board of IBM, 1943)

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  12. DevFest 2012 – November 10th 2012 | Vienna
    plexiti · pragmatic software productions
    How did we get here?
    9
    Apple
    Open Shift
    Amazon
    Facebook
    ?
    Google
    Source: http://en.wikipedia.org/wiki/Thomas_J._Watson
    "I think there is a world market for
    maybe five computers"
    Mis-attributed to Thomas J. Watson
    (Chairman of the Board of IBM, 1943)
    He seems to have been almost right!

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  13. DevFest 2012 – November 10th 2012 | Vienna
    plexiti · pragmatic software productions
    Would you like to know more?
    10
    Get the whole tour about the history of computers at:
    http://topdocumentaryfilms.com/the-machine-that-
    changed-the-world/
    or even better, read the book
    “The Dream Machine: Exploring the Computer Age”!

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  14. DevFest 2012 – November 10th 2012 | Vienna
    plexiti · pragmatic software productions
    Software Development
    n Q: Is software development an
    individual activity?
    A: It depends.
    Q: On what?
    A: On the context.
    11
    Source: http://en.wikipedia.org/wiki/
    On_the_Internet,_nobody_knows_you're_a_dog
    “On the Internet, nobody knows you’re a dog.”
    “Any fool can write code that a computer
    can understand.
    Good programmers write code that
    humans can understand”.
    -- Martin Fowler

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  15. DevFest 2012 – November 10th 2012 | Vienna
    plexiti · pragmatic software productions
    Software Development
    n Q: Is software development an
    individual activity?
    A: It depends.
    Q: On what?
    A: On the context.
    11
    Source: http://en.wikipedia.org/wiki/
    On_the_Internet,_nobody_knows_you're_a_dog
    “On the Internet, nobody knows you’re a dog.”
    “Any fool can write code that a computer
    can understand.
    Good programmers write code that
    humans can understand”.
    -- Martin Fowler
    Which code?!
    To do what exactly?

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  16. DevFest 2012 – November 10th 2012 | Vienna
    plexiti · pragmatic software productions
    Enterprise Software Development
    12
    Source: http://www.projectcartoon.com

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  17. DevFest 2012 – November 10th 2012 | Vienna
    plexiti · pragmatic software productions
    Large Scale
    Enterprise Software Development
    13
    “The Tower of Babel” by Pieter Bruegel the Elder (1563). Kunsthistorisches Museum, Vienna.

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  18. DevFest 2012 – November 10th 2012 | Vienna
    plexiti · pragmatic software productions
    n Question: why?
    One answer: every participant speaks a different language:
    n customer’s language, i.e. the business you are in (insurance, trading, …)
    n business analyst language
    n programming language (Java, .NET, Ruby, Python, … idioms)
    n national language and culture (Deutsch, English, …)
    14
    From “Understanding Comics: The Invisible Art”. Scott McCloud. 1993. Pages 194-195.
    Large Scale
    Enterprise Software Development

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  19. DevFest 2012 – November 10th 2012 | Vienna
    plexiti · pragmatic software productions
    Different People, Different Languages
    15
    Customers
    Software developers
    Business
    analysts
    System
    administrators
    Product
    owners
    Sales
    Support

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  20. DevFest 2012 – November 10th 2012 | Vienna
    plexiti · pragmatic software productions
    What is a business process?
    n Definition: “a sequence of related, structured activities or tasks that produce a
    specific service or product (serve a particular goal) for a particular customer or
    customers.”
    16
    Source: http://en.wikipedia.org/wiki/Business_process

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  21. DevFest 2012 – November 10th 2012 | Vienna
    plexiti · pragmatic software productions
    When do I need a business process?
    n Business process modeling acid test*:
    1. Long-running: hours, days, weeks, months, years, …
    2. Bursty, sleeps most of the time:
    when awake, a flurry of activities and then finished or to sleep again!
    3. Persisted state: what happens between different steps or
    when the application server goes down?
    4. Orchestration of system or human communications:
    who has to do what until when? what happens afterwards?
    n What about communication? Common shared understanding?
    n What about organizational learning?
    n How long does it takes us to do X?
    n Who did what when?
    17
    * “Essential Business Process Modeling”, Michael Havey, O’Reilly Press
    http://shop.oreilly.com/product/9780596008437.do via http://stackoverflow.com/questions/4869734/how-do-you-know-when-you-need-a-bpm-solution

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  22. DevFest 2012 – November 10th 2012 | Vienna
    plexiti · pragmatic software productions
    Business Process Modeling Notation 2.0
    n Example: announcing a job position
    18
    Source: “Praxishandbuch BPMN 2.0” http://www.bpm-guide.de/2012/02/16/praxishandbuch-bpmn-2-0-in-der-3-auflage/

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  23. DevFest 2012 – November 10th 2012 | Vienna
    plexiti · pragmatic software productions
    Business Process Modeling Notation 2.0
    n Example: announcing a job position explained… first tasting:
    19
    Start event
    Sequence flow
    User (human) task
    Pool (participant)
    Lane
    Gateway (exclusive)
    Call activity
    (sub-process)
    Service
    task
    End
    event
    Activities

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  24. DevFest 2012 – November 10th 2012 | Vienna
    plexiti · pragmatic software productions
    Business Process Modeling Notation 2.0
    n Great! I just need to learn some new symbols and then …
    20

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  25. DevFest 2012 – November 10th 2012 | Vienna
    plexiti · pragmatic software productions
    Business Process Modeling Notation 2.0
    n Great! I just need to learn some new symbols and then …
    20
    From the movie: “The Matrix” by Larry and Andy Wachowski. 1999.
    WOAH!
    I know BPMN 2.0!

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  26. DevFest 2012 – November 10th 2012 | Vienna
    plexiti · pragmatic software productions
    Business Process Modeling Notation 2.0
    21
    From the movie: “The Matrix” by Larry and Andy Wachowski. 1999.
    In your dreams!
    Mister Anderson

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  27. DevFest 2012 – November 10th 2012 | Vienna
    plexiti · pragmatic software productions
    Business Process Modeling Notation 2.0
    21
    From the movie: “The Matrix” by Larry and Andy Wachowski. 1999.
    In your dreams!
    Mister Anderson
    “It is difficult, if not impossible, for anyone to learn a subject purely by reading about it, without
    applying the information to specific problems and thereby forcing himself to think about what has
    been read. Furthermore, we all learn best the things we have discovered ourselves.”
    -- Donald Knuth, “The Art of Computer Programming”*
    * Via Alexander Daniel: http://lachdrache.wordpress.com/2012/03/11/reading-•-applying-•-thinking/

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  28. Activities Conversations
    Events
    Gateways
    Conversation Diagram
    None: Untyped events,
    indicate start point, state
    changes or final states.
    Message: Receiving and
    sending messages.
    Timer: Cyclic timer events,
    points in time, time spans or
    timeouts.
    Error: Catching or throwing
    named errors.
    Cancel: Reacting to cancelled
    transactions or triggering
    cancellation.
    Compensation: Handling or
    triggering compensation.
    Conditional: Reacting to
    changed business conditions
    or integrating business rules.
    Signal: Signalling across differ-
    ent processes. A signal thrown
    can be caught multiple times.
    Multiple: Catching one out of
    a set of events. Throwing all
    events defined
    Link: Off-page connectors.
    Two corresponding link events
    equal a sequence flow.
    Terminate: Triggering the
    immediate termination of a
    process.
    Escalation: Escalating to
    an higher level of
    responsibility.
    Parallel Multiple: Catching
    all out of a set of parallel
    events.
    Start End
    Intermediate
    Catching
    Throwing
    Event Sub-Process
    Interrupting
    Top-Level
    Event Sub-Process
    Non-Interrupting
    Boundary
    Interrupting
    Boundary Non-
    Interrupting
    Sequence Flow
    defines the execution
    order of activities.
    Conditional Flow
    has a condition
    assigned that defines
    whether or not the
    flow is used.
    Default Flow
    is the default branch
    to be chosen if all
    other conditions
    evaluate to false.
    Task
    A Task is a unit of work, the job to be
    performed. When marked with a symbol
    it indicates a Sub-Process, an activity that can
    be refined.
    Transaction
    A Transaction is a set of activities that logically
    belong together; it might follow a specified
    transaction protocol.
    Event
    Sub-Process
    An Event Sub-Process is placed into a Process or
    Sub-Process. It is activated when its start event
    gets triggered and can interrupt the higher level
    process context or run in parallel (non-
    interrupting) depending on the start event.
    Call Activity
    A Call Activity is a wrapper for a globally defined
    Sub-Process or Task that is reused in the current
    process.
    Task Types
    Types specify the nature of
    the action to be performed:
    Send Task
    Receive Task
    User Task
    Manual Task
    Business Rule Task
    Service Task
    Script Task
    Markers indicate execution
    behavior of activities:
    Activity Markers
    Sub-Process Marker
    Loop Marker
    Parallel MI Marker
    Sequential MI Marker
    ~ Ad Hoc Marker
    Compensation Marker
    A Communication defines a set of
    logically related message exchanges.
    When marked with a symbol it
    indicates a Sub-Conversation, a
    compound conversation element.
    A Forked Conversation Link connects
    Communications and multiple
    Participants.
    A Conversation Link connects
    Communications and Participants.
    Inclusive Gateway
    When splitting, one or more
    branches are activated. All
    active incoming branches must
    complete before merging.
    Complex Gateway
    Complex merging and
    branching behavior that is not
    captured by other gateways.
    Exclusive Event-based Gateway
    (instantiate)
    Each occurrence of a subsequent
    event starts a new process
    instance.
    Parallel Event-based Gateway
    (instantiate)
    The occurrence of all subsequent
    events starts a new process
    instance.
    Pool
    (collapsed)
    Multi Instance Pool
    (collapsed)
    Communication
    Sub-Conversation
    Pool
    (collapsed)
    Participant B
    The order of message
    exchanges can be
    specified by combining
    message flow and
    sequence flow.
    Pool Pool
    Pools (Participants) and Lanes
    represent responsibilities for
    activities in a process. A pool
    or a lane can be an
    organization, a role, or a
    system. Lanes subdivide pools
    or other lanes hierarchically.
    Lane
    Task
    Lane
    Task
    Pool
    Message Flow
    symbolizes information
    flow across organizational
    boundaries. Message flow
    can be attached to pools,
    activities, or message
    events.
    Data
    Task
    Input Out-
    put
    Data Store
    A Data Object represents information flowing
    through the process, such as business
    documents, e-mails, or letters.
    A Data Store is a place where the process can
    read or write data, e.g., a database or a filing
    cabinet. It persists beyond the lifetime of the
    process instance.
    A Data Input is an external input for the
    entire process. It can be read by an activity.
    A Data Output is a variable available as result
    of the entire process.
    A Message is used to depict the contents of a
    communication between two Participants.
    A Collection Data Object represents a
    collection of information, e.g., a list of order
    items.
    Pool (Collapsed)
    Collaboration Diagram
    Pool (Expanded)
    Lane
    Lane
    Choreographies
    Choreography Diagram
    A Choreography Task
    represents an Interaction
    (Message Exchange)
    between two Participants.
    Choreography
    Task
    Participant A
    Participant B
    A Choreography Sub-
    Process contains a refined
    choreography with several
    Interactions.
    Multiple Participants Marker
    denotes a set of
    Participants of the
    same kind.
    Swimlanes
    BPMN 2.0 - Business Process Model and Notation
    Collection
    Ad-hoc Sub-Process
    Task
    Task
    ~
    Message
    Start Event
    Message Flow
    Data Object
    Collapsed
    Sub-Process
    Event-based
    Gateway
    Escalation
    End Event
    Timer
    Intermediate
    Event
    Receive Task
    Attached
    Intermediate
    Timer Event
    Link
    Intermediate
    Event
    Manual Task
    End
    Event
    Data
    Store
    Link
    Intermediate
    Event
    Parallel
    Multiple
    Intermediate
    Event
    Text Annotation
    Group
    Multi Instance
    Task (Parallel)
    Message
    End Event
    Send Task
    Parallel
    Gateway
    Exclusive
    Gateway
    Attached
    Intermediate
    Error Event
    Signal
    End
    Event
    Call Activity
    Sub-Process
    Event Sub-Process
    Conditional
    Start Event
    Error End
    Event
    Start
    Event
    End
    Event
    Looped
    Sub-Process
    condition
    http://bpmb.de/poster
    Participant A
    Participant C
    Participant B
    Choreography
    Task
    Participant A
    Participant B
    Choreography
    Task
    Participant A
    Participant C
    Initiating
    Message
    Response
    Message
    Choreography
    Task
    Participant B
    Participant A
    When splitting, it routes the sequence flow to exactly
    one of the outgoing branches. When merging, it awaits
    one incoming branch to complete before triggering the
    outgoing flow.
    Exclusive Gateway
    Is always followed by catching events or receive tasks.
    Sequence flow is routed to the subsequent event/task
    which happens first.
    Event-based Gateway
    When used to split the sequence flow, all outgoing
    branches are activated simultaneously. When merging
    parallel branches it waits for all incoming branches to
    complete before triggering the outgoing flow.
    Parallel Gateway
    Choreography
    Sub-Process
    Participant A
    Participant C
    Participant B
    DevFest 2012 – November 10th 2012 | Vienna
    plexiti · pragmatic software productions
    Would you like to know more?
    22
    And THE poster!
    PDF: http://www.bpmb.de/images/BPMN2_0_Poster_EN.pdf
    Printed: http://www.signavio.com/joomla/de/bpmn-poster.html
    Get THE book!
    German: http://www.bpm-guide.de/2012/02/16/
    praxishandbuch-bpmn-2-0-in-der-3-auflage/
    English: http://www.bpm-guide.de/2012/10/30/real-life-
    bpmn-2-0-book-now-available-in-english/
    Get the BPMN 2.0 Examples at: http://www.omg.org/cgi-bin/doc?dtc/10-06-02

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  29. DevFest 2012 – November 10th 2012 | Vienna
    plexiti · pragmatic software productions
    Business Process Modeling Notation 2.0
    n Question: Is this a business process?
    23

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  30. DevFest 2012 – November 10th 2012 | Vienna
    plexiti · pragmatic software productions
    Business Process Modeling Notation 2.0
    n Answer: No. It’s a model of a business process!
    24
    Picture sources: http://en.wikipedia.org

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  31. DevFest 2012 – November 10th 2012 | Vienna
    plexiti · pragmatic software productions
    Business Process Modeling Notation 2.0
    n Answer: No. It’s a model of a business process!
    24
    Picture sources: http://en.wikipedia.org

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  32. DevFest 2012 – November 10th 2012 | Vienna
    plexiti · pragmatic software productions
    Business Process Modeling Notation 2.0
    n Answer: No. It’s a model of a business process!
    24
    All models are incomplete!
    But they serve very well their role as a common shared understanding.
    Picture sources: http://en.wikipedia.org

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  33. DevFest 2012 – November 10th 2012 | Vienna
    plexiti · pragmatic software productions
    n The point is not to have a great model, the point is to ship software!
    n In every moderate to complex software project:
    25
    Business Process Modeling Notation 2.0

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  34. DevFest 2012 – November 10th 2012 | Vienna
    plexiti · pragmatic software productions
    n The point is not to have a great model, the point is to ship software!
    n In every moderate to complex software project:
    25
    [T]here are known knowns; there are things we know that we know.
    There are known unknowns; that is to say there are things that, we now know we don't know.
    But there are also unknown unknowns – there are things we do not know we don't know.
    --- United States Secretary of Defense, Donald Rumsfeld
    Business Process Modeling Notation 2.0

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  35. DevFest 2012 – November 10th 2012 | Vienna
    plexiti · pragmatic software productions
    Meet Activiti
    n Light-weight workflow and Business Process Management (BPM) platform
    n Able to execute BPMN 2.0 business processes
    n For business analysts, developers and system admins
    n Open-source and distributed under the Apache License 2.0
    n Activiti runs in any Java application or web application server
    n Integrates with Spring
    n Has a REST API
    26
    http://activiti.org

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  36. DevFest 2012 – November 10th 2012 | Vienna
    plexiti · pragmatic software productions
    Meet Activiti
    n An engine or a platform? Both!
    27
    Source: http://activiti.org/components.html

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  37. DevFest 2012 – November 10th 2012 | Vienna
    plexiti · pragmatic software productions
    Different People, Different Needs
    28
    Customer
    Software developers Business analysts
    System administrators
    Activiti Designer
    Activiti Engine
    Activiti Probe
    Activiti Modeler
    Activiti Explorer

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  38. DevFest 2012 – November 10th 2012 | Vienna
    plexiti · pragmatic software productions
    Meet Activiti (demo)
    n Installing and starting the Activiti demo project
    n Exploring the packaged examples
    n Developing process applications:
    n What about testing?! --> unit testing your processes
    n Connecting the process to your business logic (services, …)
    n Deploying the process and related resources
    n “Using” the process
    n Monitoring the process
    29
    Hi!
    I’m Kermit!

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  39. DevFest 2012 – November 10th 2012 | Vienna
    plexiti · pragmatic software productions
    Meet Activiti (demo)
    n Installing and starting the Activiti demo project
    n Exploring the packaged examples
    n Developing process applications:
    n What about testing?! --> unit testing your processes
    n Connecting the process to your business logic (services, …)
    n Deploying the process and related resources
    n “Using” the process
    n Monitoring the process
    29
    Hi!
    I’m Kermit!
    I’m Gonzo!

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  40. DevFest 2012 – November 10th 2012 | Vienna
    plexiti · pragmatic software productions
    Meet Activiti (demo)
    n Installing and starting the Activiti demo project
    n Exploring the packaged examples
    n Developing process applications:
    n What about testing?! --> unit testing your processes
    n Connecting the process to your business logic (services, …)
    n Deploying the process and related resources
    n “Using” the process
    n Monitoring the process
    29
    Hi!
    I’m Kermit!
    I’m Gonzo!
    And
    I’m Fozzie!

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  41. DevFest 2012 – November 10th 2012 | Vienna
    plexiti · pragmatic software productions
    … and friends: camunda fox
    n Commercially supported version of Activiti
    n Focus on the Java EE / CDI environment
    n JBoss, Glassfish, WAS, … application servers
    n Improved tooling: designer, cockpit, cycle, …
    n Full featured comparison here:
    http://www.camunda.com/fox/product/features/
    n Development and production support
    n camunda employs a good portion of the
    Activiti core developers
    n Open Source Community Edition also available!
    http://www.camunda.com/fox/
    n camunda fox open source strategy:
    http://www.bpm-guide.de/2012/02/17/camunda-fox-open-source-strategy/
    30

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  42. DevFest 2012 – November 10th 2012 | Vienna
    plexiti · pragmatic software productions
    The Job Announcement Showcase
    n A kick-start application for your
    business process-centric project!
    n Java EE 6 technology stack
    n camunda fox BPM Platform
    n Try online at:
    http://the-job-announcement.com/
    n Fork, clone, modify, … at
    https://github.com/plexiti/the-job-
    announcement-fox
    n Feedback highly appreciated!
    n More to come: http://plexiti.com/blog
    31

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  43. DevFest 2012 – November 10th 2012 | Vienna
    plexiti · pragmatic software productions
    The Job Announcement Showcase
    n Demo
    32

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  44. DevFest 2012 – November 10th 2012 | Vienna
    plexiti · pragmatic software productions
    Conclusions
    n BPMN 2.0 process diagrams as
    n means of communication and sharing knowledge between project participants
    n executable in an open-source business process engine like Activiti
    n Question: do we need software developers anymore then?! Answer: Sure!
    n Zero-code: business analysts will be able to “draw” the processes themselves.
    Snake oil!
    n Less-code: software developers can focus on implementing what brings value.
    n There’s no silver bullet!
    “No Silver Bullet — Essence and Accidents of Software Engineering”
    http://www.cs.nott.ac.uk/~cah/G51ISS/Documents/NoSilverBullet.html
    “All non-trivial abstractions, to some degree, are leaky”
    http://www.joelonsoftware.com/articles/LeakyAbstractions.html
    33

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  45. DevFest 2012 – November 10th 2012 | Vienna
    plexiti · pragmatic software productions
    Would you like to know more?
    n For the technical side of process-based application implementation:
    n “Wie man Workflows mit Activiti als Open Source Process Engine
    leichtgewichtig in die Java-Welt bringt”
    by Daniel Meyer and Bernd Rücker
    http://www.camunda.com/wp-content/uploads/2012/06/JM_6_12_Meyer_R%C3%BCcker_Activiti.pdf
    34
    “Activiti in Action:
    Executable business processes in BPMN 2.0”
    by Tijs Rademakers
    http://www.bpmnwithactiviti.org/
    Discount code available on the Activiti website!
    http://activiti.org/

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  46. DevFest 2012 – November 10th 2012 | Vienna
    plexiti · pragmatic software productions
    Discussion
    35

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  47. DevFest 2012 – November 10th 2012 | Vienna
    plexiti · pragmatic software productions
    Answers to Discussion Questions
    n Q: “Since you are using EL expressions, are you forced to use JSF?”
    A: No! Check out this cool AngularJS-based demo for camunda fox by
    Daniel Meyer and Nico Rehwaldt:
    Demo: http://showcase-camundafox.rhcloud.com/fruit-shop/app/index.html
    Code: https://github.com/meyerdan/order-processing-demo
    n Q: I presume Activiti is only for Java-based projects, or?
    A: No! Activiti also offers a REST API!
    http://activiti.org/userguide/index.html#N12855
    n Q: Must all the application data be also stored in the Activiti database tables?
    A: Not at all! See here on how to use your JPA-based model entities with Activiti
    http://activiti.org/userguide/index.html#N1200A
    n Q: Is designing process models only available as Eclipse plug-in?
    A: No! See the
    Activiti Modeler: http://bpmn20inaction.blogspot.nl/2012/09/activiti-modeler-getting-started-part-1.html
    Signavio Process Editor: http://www.signavio.com/products/process-editor/process-modeling/
    36

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  48. DevFest 2012 – November 10th 2012 | Vienna
    plexiti · pragmatic software productions
    37
    Thanks!
    Rafael Cordones, [email protected], @rafacm
    DevFest 2012, November 10th, 2012, Vienna

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