The Learning PathwayActions Rulesand Simple and AdvancedWorkflow Integration UseCasesJörg Sauer
The longest title ever• Actions, Rules and Simple and Advanced Workflow Integration Use Cases is about o Actions to extend Alfresco functionality o Rules to automate execution of Actions o Use Simple Workflows to implement a Workflow without coding • Add Rules to run certain Actions in Workflow steps • Use a simple Advanced Workflow to leverage Tasks in Simple Workflows
Basic Example to be extended• Review Publish Workflow with 2 phase approval review approve publish1 Drafts reject 2 Review 3 Approve 4 Published reject
Simple Workflow review approve publish1 Drafts reject 2 Review 3 Approve 4 Published reject• Pros: o User can build workflow o Easy to understand• Cons: o No State: Implicit state by location (folder) o No Task: Implicit task by folder access o No branching: Serial workflow only
Adding Status• Content Model: o Provide custom Aspect to hold workflow status
Amend Workflow with status• Set Status on each workflow folder o Add Aspect: Workflow Status o Set workflow status accordingly reject review approve publish1 Drafts reject 2 Review 3 Approve 4 Published • Status: draft • Status: under review • Status: pend. approval • Status: published
Alfresco Repository Actions• Action: Unit of work that is performed against a node• Examples: o Move node o Transform content of node o Send email• Out of the Box Actions• Custom Actions o Implement own Action class o Deploy in Application Context
Simple Workflow: Implementation Details• Documents amended with properties for o Approve step label, copy/move, destination o Reject step label, copy/move, destination (all optional)
Intention: Create User Task o Every time simple workflow is assigned, create advanced workflow task for specific user. o User can • access task in task list • see task description • access attached document • approve or reject directly from within task o Advantage • No notification emails • No need to check simple workflow folders
Simple Workflow Task Architecture• Required: o Custom aspect for task description. (attached to simple workflow folder) o Advanced workflow to be started by rule • Configure user • Provide task • Implement simple workflow actions for – Approve – Reject o Bug Fix for Alfresco StartWorkflowActionExecuter o UI for Rule Config
Content Model for Workflow• Aspects: o simpleWorflow: Manage Action Labels• Content Types: o simpleWfTaskStart: Properties for Start Task • Assignee • Task Description • Simple Workflow Approve & Reject Action Labels • All above become process variables! o ApprovalOnlyTask: Task properties to approve document o ApproveOrRejectTask: Properties for approving or rejecting the document• Simplicity: all in sample model• Best practice: own workflow model
Simple Process Definition• Create Process Definition o Graphically o Change root tag: o Add Swimlanes o Add tasks to task node, will render UI
Workflow Deployment• Attention: No actions implemented yet!• But want to check if model is correct & workflow deploys• Context file:• Redeploy off on production systems!
Workflow Actions• User decides in task to o Approve o Reject• Workflow will transition to nodes o approveDocument: code will approve simple workflow o rejectDocument: code will reject simple workflow• Todo: Implement Event Handler o for node-enter event (approve / reject)
Code (sneaking)• UI has actions for approve/reject• Look for action definition in web-client- config-actions.xml• Sample implementation can be found in DocumentDetailsDialog.approve() / reject() methods!• OpenSource Rules!
Direct Code reuse• Problem: o From Package org.alfresco.web.bean o Workflow Event not within web context. o DocNode not core object• Solution: o Reprogram but use native Foundation Services API o Should be fool proof ;-)
Lets get the event• Define in Process Definition• Derive from JBPMSpringActionHandler
What to Implement Where• initializeHandler(): o Get all services needed from the factory • ServiceRegistry (in case you need something) • NodeService to deal with the node • CopyService to copy/move the document• execute(): o Get the process variables through executionContext o Implement the approve / reject action
Hiding Reject Transition if Not Set• Hide reject transition accordingly o task-assign event (has to be this event!) o use bpm:hiddenTransitions (bpm_hiddenTransitions)
Testing First Version• Redeploy• Manually start Simple Workflow Task workflow• Fill in all details in the start form• Test both scenarios: o Approval only (reject transition hidden?) o Approve or Reject• Task should show up in task list• Open Task and pick Action• Check if document has been moved / copied according to Simple Workflow configuration.
Final Demo• Configured Simple Workflow• Add Rule to kick off Simple Workflow Task Workflow• Push Document into folder with simple workflow. o Review document status o Search for documents with status o Review task list • Manage tasks o See documents transition through simple workflow by using advanced workflows functionality
Resume• Actions extend Alfresco• Simple workflows can be configured easily• Rules are the binding glue• Small advanced workflows can be leveraged in actions and simple workflows.• Your imagination is the border• Alfresco OpenSource helps you to code and find solutions to your problems.
Resources• Training o Alfresco API Development Course (3 days) o Alfresco Workflow Course (2 days)• Alfresco (API) Documentation o http://docs.alfresco.com/3.4/index.jsp• Wiki Resources o http://wiki.alfresco.com/wiki/Data_Dictionary_Guide o http://wiki.alfresco.com/wiki/Custom_Actions o http://wiki.alfresco.com/wiki/Custom_Action_UI o http://wiki.alfresco.com/wiki/Workflow o http://wiki.alfresco.com/wiki/WorkflowAdministration• Books o Alfresco Developer Guide (Packt Publishing) o Professional Alfresco (Wrox Press)
Questions?Email: email@example.comTwitter: joergsauerIn Person: DevCon 2011 London
Have you got your ticket yet? DevCon Americas 2011 26-27th October at the Hard Rock Hotel, San Diego, CA Get some preconference training in on 25th October choose from Jump Start or Advanced Alfresco ∞∞∞∞∞∞∞∞∞ DevCon EMEA & APAC 2011 9-10th November at Prospero House, Central London, UK Get some preconference training in on 8th November choose from Jump Start or Advanced Alfresco
A particular slide catching your eye?
Clipping is a handy way to collect important slides you want to go back to later.