Workflow Management with Espresso Workflow
Download as ODP, PDF0 likes1,715 views
The document provides an overview of PAVONE Espresso Workflow for Java EE, a workflow management system. It discusses the components, modeling and form design capabilities, runtime engine, and API. The runtime engine supports activities, tasks, and processes. It has a multi-client capability and integrated event handling. The API allows retrieving, creating, and completing tasks and processes programmatically. JavaScript and business objects can also be used.
Workflow Management with Espresso Workflow
- 1. Startfolie mit Titel der Präsentation Workflow Management with PAVONE Espresso Workflow for Java EE Vorname Nachname -Business Titel- Dr. Rolf Kremer - Director Product Development -
- 2. Agenda Introduction Components Modeling and Form Design Capabilities Runtime Engine API Questions
- 3. PAVONE Espresso Workflow Part of the PAVONE Process Control Suite Available on two platforms: IBM Lotus Notes/Domino, Java EE History 1995: First release for IBM Lotus Notes/Domino (as PAVONE GroupFlow) 2006: First release for Java EE Many users Installed basis: > 85.000 users Customer projects: > 880 See http://www.pavone.com/pages.nsf/goto/processmanagement_en
- 4. Focus: Team-oriented Processes Transaction-oriented processes Business integration and process automation Examples: Invoice processing, Accounting, Logistics, Financial services Strong structured and high number execution Team-oriented processes ('Human Workflow Management') Human interaction Difficult to automate and weak structured Forwarding of documengs and forms between different editors Content could be changed in each task Examples: Employee selection, Document release, Travelling expenses accounting, Investment proposal, Claims settlement, Process changes
- 5. Components
- 6. From Model to Analysis PAVONE ProcessModeler PAVONE ProcessModeler (PAVONE ProcessModeler), Application PAVONE ProcessModeler Modeling : Modeling of Workflow controlled business processes, specification of control conditions Animation : Step by step execution of modeled processes Simulation : Comparison of alternative solutions under different conditions Analysis : Analyze existing process instances, graphical visualization, option to export data
- 7. First: Defining the Process Definition PAVONE ProcessModeler
- 8. Second: Defining the Data Model PAVONE ProcessModeler
- 9. Types of fields Standard Text Date/Time Number Rich Text Names, (Autors), (Readers) Extended Action: Call of an uri with parameters Separator: Line break between fields Section: Grouping of fields to a section Tab: Grouping of fields/section in a tab Widget: Thematically section or tab
- 10. Widget: Progress Display Position of the current task in the process Definition in the process definition Definition per task Take-over from other tasks possible
- 11. Widget: Project Start Start of a project directly from a process form Statement of Project id Manager Start date of the project Selection of a project template (if available)
- 12. Widget: File Attachment Management of files of a process task Actions Add, Delete, Open Download Preview area
- 13. Several widgets available System widgets Progress display Project start File attachments Bookmarks Comment Log Acquisition of efforts User defined widgets Creation of own widget Adding of JavaScript code Example: Google Gadgets
- 14. Third: Designing the Forms Options Modifying of order of fields Add separator Grouping of fields (sections) Grouping of fields/section in tabs Read-only fields Must fields Hidden fields
- 15. Form Design: Read-only and Must fields Read-only field : Modification of content is not possible Must field : A value has to be entered Hidden field : Field exists in html code, but is not visible
- 16. Form Design: Separator Without separator ('Line break'): With separator:
- 17. Form Design: Section Grouping of fields to an unit
- 18. Form Design: Tab Grouping of fields/widgets in a tab
- 19. Fourth: Initiate and Execute a Process Administration area Tasks area and Welcome Page
- 20. View for Business Data For each process definition a view Show field values in columns
- 21. View for Business Data (2) Definition of names & columns
- 22. Capabilities Process Hosting SaaS-Lösung: PAVONElive Install PAVONE ProcessModeler local Suitable for small, simple processes Suitable for prototypical implementation See http://www.pavonelive.com In-house solution Easy installation of the PAVONE Pross Control Suite Suitable for processes any complexity Suitable for connections to third-party systems (Data exchange) See http://www.pavone.com/pages.nsf/goto/pcs_en
- 23. In-house Solution: Installation Installed software Apache Derby Server 10.4.2 JBoss Application Server 4.2.3 Apache Jackrabbit 1.5.3 (Content Repository) PAVONE PCS Java EE 2.2 Setup: PCS databases with examples Path to the JCR repository
- 24. Used Open Source Modules Server: JBoss Application Server, (Apache Tomcat) DBMS: Apache Derby, (MySQL Community Edition) Frontend: Apache Struts, Dojo Toolkit, jQuery Persistence: Hibernate File management: Apache Jackrabbit Operating system: Debian, Ubuntu Other: Rhino, Apache Commons, Log4J, JibX, JavaDoc, InstallJammer, MPXJ, XPP3
- 25. Extensibility Workflow Application Standard Application Other Application Standard Forms Add Widgets Own Forms & Standard Business Objects Own Forms & Own Business Objects Existing Application New Application Frontend Backend Widget Documentation Java API Documentation JSON API Documentation White Paper Designing Workflows ProcessEngine Installation ProcessEngine Installation Standard? Java API Documentation JSON API Documentation
- 27. PAVONE Process Engine Part of PAVONE Espresso Workflow Runtime Engine, responsible for the routing Support activities, workflow tasks, project tasks Extensive and easy-usable API (Application Programming Interface) Multi-client capability Integrated Event handling Integrated Business data handling
- 28. Open for serveral Application Types
- 29. Databases ag app manager app pm od process engine security Organization Directory Process Engine Application Agent Manager Security
- 30. Deployment Options Minimal installation Direct jar import UI independence Service installation Core object access via JNDI lookups UI independence Web application Struts-based UI, JSPs, Javascript, etc. Predefined, extensible UI Reuseable elements
- 32. Object types Types Project Workflow Simple (Activity) All types share a largely common interface
- 33. Runtime & Definition Objects
- 34. Basic Types: Status & AccessLevel Standard types: enforce type safety ease localization make values independent of persistent representation
- 35. NameAssignment Class Resolution types: Fixed Computed by property Computed by script Computed by field in business object Automated (not yet available) Computed by custom property (not yet available) Type dynamic-by-field refers to default bizobject Used by: Process Task ProcessDefinition TaskDefinition
- 36. Persistence API Repository Encapsulates persistent data store Connection Connection to data store PCSEntity Base class for all persistent objects UuidGenerator Interface allows for flexible creation of unique keys
- 37. Persistence API: Repository & Connection Repository Manage connections to a particular datastore Connection Manage objects in a data store Purpose: Create a layer of abstraction around Hibernate
- 38. API Example: Creation of Session Object import javax.naming.InitialContext; import com.pavone.base.util.config.PCS_config; import com.pavone.pcs.Session; InitialContext ic = new InitialContext(); SessionFactory pcsFactory = (SessionFactory) ic.lookup(PCS_config.get(PCS_config. PCSENGINE_JNDINAME )); Session pcsSession = pcsFactory.createSession(userName);
- 39. API Example: Repository and Connection import com.pavone.pcs.Repository; import com.pavone.pcs.Connection; Repository repository = pcsSession.getRepository(); Connection connection = repository.createConnection();
- 40. API Example: Frame for Transaction Handling try { connection.beginTransaction(); ... Place your operations here ... connection.commitTransaction(); } catch (PCSBusinessException pcse) { connection.rollbackTransaction(); } catch (RuntimeException e) { connection.rollbackTransaction(); e.printStackTrace(); } finally { connection.close(); }
- 41. API Example: Get Simple Task Objects import com.pavone.pcs.TaskType, import com.pavone.pcs.ObjectType; Set tasks = pcsSession.getTasksByUser ( "", ObjectType. SIMPLE , pcsSession.getUserName(), TaskStatus. IN_PROGRESS );
- 42. API Example: Loop to Access Simple Tasks import com.pavone.pcs.SimpleTask; Iterator iterator = tasks.iterator(); while (iterator.hasNext()) { SimpleTask task = (SimpleTask)iterator.next(); ... Place your operations here ... }
- 43. API Example: Creation of Simple Task Object import com.pavone.pcs.SimpleTask; SimpleTask task = pcsSession.createSimpleTask( "" );
- 44. API Example: Simple Task Completion import com.pavone.pcs.SimpleTask; boolean bo = task.complete(); // or boolean bo = task.complete( <TimeStamp> );
- 45. API Example: Deletion of Simple Task Object pcsSession.deleteSimpleTask( task );
- 46. API Example: Retrieving Workflow Tasks import com.pavone.pcs.TaskType, import com.pavone.pcs.ObjectType; Set tasks = pcsSession.getTasksByUser ( "", ObjectType. WORKFLOW , "*" , TaskStatus. IN_PROGRESS );
- 47. API Example: Workflow Task Completion boolean success = task.complete();
- 48. API Example: Casting Task into Workflow Task import com.pavone.pcs.WfTask; WfTask wfTask = (WfTask) task;
- 49. API Example: Retrieving Process import com.pavone.pcs.Process; Process process = task.getProcess(); OR import com.pavone.pcs.ProcessStatus; Set processes = pcsSession.getProcesses( "" , ObjectType. WORKFLOW , ProcessStatus. IN_PROGRESS );
- 50. API Example: Retrieving Processes (1) Set processes = pcsSession.getProcesses( <ProcessDefinition> ); Set processes = pcsSession.getProcesses( <AppInstanceId>, <ProcessDefinition> ); Set processes = pcsSession.getProcesses( <AppInstanceId> , <ObjectType> , <ProcessStatus> ); Set processes = pcsSession.getProcesses( <AppInstanceId> , <ProcessDefiniton> , <ProcessStatus> ); Set processes = pcsSession.getProcesses( <AppInstanceId> , <ObjectType> , <int1>, <int2>, <TimeStamp>, <TimeStamp>, <boolean> ); Set processes = pcsSession.getProcesses( <AppInstanceId> , <ProcessDefinition> , <int1>, <int2>, <TimeStamp>, <TimeStamp>, <boolean> );
- 51. API Example: Retrieving Processes (2) Set processes = pcsSession.getProcessesByInitiator( < AppInstanceId > , <ObjectType> , <ProcessStatus>, <Initiator> ); Set processes = pcsSession.getProcessesByInitiator( <AppInstanceId> , <ProcessDefinition> , <ProcessStatus>, <Initiator> ); Set processes = pcsSession.getProcessesByManager( <AppInstanceId> , <ObjectType> , <ProcessStatus>, <Manager> ); Set processes = pcsSession.getProcessesByManager( <AppInstanceId> , <ProcessDefinition> , <ProcessStatus>, <Manager> ); Set processes = pcsSession.getProcessesByName( <AppInstanceId> , <ObjectType> , <ProcessStatus>, <Process name> ); Set processes = pcsSession.getProcessesByPriority( <AppInstanceId> , <ObjectType> , <ProcessStatus>, <Priority> ); ...
- 52. API Example: Import Process Definition import com.pavone.pcs.Administration; WfProcessDefinition wf = Administration. importXMLProcessDefinition ( <fileName>, <appInstanceId> ); ---------------------- // lock the process definition wf.setLocked( true ); // unlock the process definition wf.setLocked( false );
- 53. API Example: Retrieving Process Definition Object import com.pavone.pcs.ProcessDefinition; // get process definition String strDefName = "<Name of the process definition>"; ProcessDefinition def = (ProcessDefinition) pcsSession.getProcessDefinition( strDefName );
- 54. API Example: Creating Process Definition Object import com.pavone.pcs.ProcessDefinition; // create process definition String strDefName = "<Name of the process definition>"; ProcessDefinition def = pcsSession.createProcessDefinition ( ObjectType. WORKFLOW , strDefName );
- 55. API Example: Retrieving all Task Definition Objects import com.pavone.pcs.WfTaskDefinition; if ( wfDef != null ){ // get all task definitions Set list = wfDef.getTaskDefinitions(); ... }
- 56. API Example: Initiating Process WfProcess process = pcsSession.initiateWfProcess( <AppInstanceId> , <Name> , "" , "" ); // get tasks Set tasks = process.getTasks ( TaskStatus. IN_PROGRESS ); // get first task Iterator iterator = tasks.iterator(); WfTask task = (WfTask)iterator.next();
- 57. Business Objects BizObjectContainer Interface for classes that contain bizobjects (Process, Task) BizObjectInterface Interface for accessing one or more classes of bizobjects BizObjectLink Base class for links to bizobjects BizObjectDefault Standard bizobject that is always available as a place to hold process/task-related data so that custom objects are often not necessary.
- 58. Business Objects BizObjectContainer Interface contains bizobjects (extensions of java.lang.Object) Process and Task implement interface BizObjectDefault Default bizobject to eliminate need for custom objects Available from Process and Task
- 59. DataItems (Predefined Fields) Data values defined in process model Defined for: ProcessDefinition TaskDefinition Access: processDefinition.getDataItems() taskDefinition.getDataItems() Values copied to default bizobject when specified
- 60. API Example: Retrieve DataItem 'comment' import com.pavone.pcs.BizObjectDefault; import com.pavone.pcs.DataItem; BizObjectDefault bo = task.getDefaultBizObject(); DataItem item = bo.getItem ( "comment" );
- 61. API Example: Check whether DataItem exists String name = ""; if ( bo.hasItem ( "name" )) { name = bo.getItemValueString ( "name" ); }
- 62. API Example: Access all DataItems import com.pavone.pcs.WfTaskDefinition; import com.pavone.pcs.DataItem; List itemList = taskdef.getDataItems(); Iterator iter = itemList.iterator(); while ( iter.hasNext() ) { DataItem item = (DataItem) iter.next(); ... Place your operations here ... }
- 63. Usage of JavaScript Uses Rhino from Mozilla (JavaScript for Java) Wraps Java classes for JavaScript. Allows for selective exposure of Java objects. http://www.mozilla.org/rhino/ Use cases: Task validation Routing conditions Name assignments Operations API objects are available for scripting as appropriate session process task
- 64. Example: Routing Condition Condition => formula-based (JavaScript) condition Use bizobject for values Return true to route, otherwise false
- 65. Event Handling: Classes WfEventListener Interface defines event method signatures WfEventAdapter Empty class that implements WfEventListener for ease of creating new handlers Example code: com.pavone.pcs.example.MyEventHandler
- 66. Event Handling: Configuration Configure handler via full class name
- 67. API Example: Event Handling Code
- 68. Materials
- 69. Questions & Answers Feel free to contact us if you have other questions!
- 70. For more information please visit our homepage http://www.pavone.com and http://www.pavonelive.com Contact PAVONE Ltd, UK School House, Hackforth BEDALE, N. Yorks. DL8 1PE United Kingdom Phone: +44 (0) 1748 811527 E-Mail: [email protected] PAVONE Inc. 13 NW 13th Avenue Portland, Oregon 97209 USA Phone: +1.503.754.3144 E-Mail: [email protected] PAVONE AG Technologiepark 9 33100 Paderborn Tel.: +49 52 51 / 31 02-0 Fax: +49 52 51 / 31 02-99 E-Mail: [email protected]