Examples of org.apache.oodt.cas.workflow.structs.WorkflowInstance

Package org.apache.oodt.cas.workflow.structs

Examples of org.apache.oodt.cas.workflow.structs.WorkflowInstance

org.apache.oodt.cas.workflow.structs.WorkflowInstance
@author mattmann @version $Revision$
A WorkflowInstance is an instantiation of the abstract description of a Workflow provided by the {@link Workflow} class. WorkflowInstances havestatus, and in general are data structures intended to be used as a means for monitoring the status of an executing {@link Workflow}.

        return eventName;
    }


    public static WorkflowInstance getWorkflowInstance(ResultSet rs)
            throws SQLException {
        WorkflowInstance workflowInst = new WorkflowInstance();
        workflowInst.setTimesBlocked(rs.getInt("times_blocked"));
        workflowInst.setStatus(rs.getString("workflow_instance_status"));
        workflowInst.setId(rs.getString("workflow_instance_id"));
        workflowInst.setCurrentTaskId(rs.getString("current_task_id"));
        workflowInst.setStartDateTimeIsoStr(rs.getString("start_date_time"));
        workflowInst.setEndDateTimeIsoStr(rs.getString("end_date_time"));
        workflowInst.setCurrentTaskStartDateTimeIsoStr(rs
                .getString("current_task_start_date_time"));
        workflowInst.setCurrentTaskEndDateTimeIsoStr(rs
                .getString("current_task_end_date_time"));
        workflowInst.setPriority(Priority.getPriority(rs.getDouble("priority")));
        Workflow workflow = new Workflow();
        workflow.setId(rs.getString("workflow_id"));
        workflowInst.setWorkflow(workflow);
        return workflowInst;
    }

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  public void setRunning(boolean running) {
    this.running = running;
  }


  protected WorkflowTask extractTaskFromProcessor(TaskProcessor taskProcessor) {
    WorkflowInstance inst = taskProcessor.getWorkflowInstance();
    ParentChildWorkflow workflow = inst.getParentChildWorkflow();
    String taskId = inst.getCurrentTaskId();
    for (WorkflowTask task : workflow.getTasks()) {
      if (task.getTaskId().equals(taskId)) {
        return task;
      }
    }

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    dynamicWorkflow.setName("Dynamic Workflow-" + dynamicWorkflow.getId());


    Metadata met = new Metadata();
    met.addMetadata(metadata);


    WorkflowInstance inst = this.engine.startWorkflow(dynamicWorkflow, met);
    return inst.getId();
  }

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        persist(inst);


        // handle its pre-conditions
        for (WorkflowCondition cond : inst.getParentChildWorkflow()
            .getPreConditions()) {
          WorkflowInstance instance = new WorkflowInstance();
          WorkflowState condWorkflowState = lifecycle
              .getDefaultLifecycle()
              .createState(
                  "Null",
                  "initial",
                  "Sub Pre Condition Workflow created by Workflow Processor Queue for workflow instance: "
                      + "[" + inst.getId() + "]");
          instance.setState(condWorkflowState);
          instance.setPriority(inst.getPriority());
          WorkflowTask conditionTask = toConditionTask(cond);
          instance.setCurrentTaskId(conditionTask.getTaskId());
          Graph condGraph = new Graph();
          condGraph.setExecutionType("condition");
          condGraph.setCond(cond);
          condGraph.setTask(conditionTask);
          ParentChildWorkflow workflow = new ParentChildWorkflow(condGraph);
          workflow.setId("pre-cond-workflow-"
              + inst.getParentChildWorkflow().getId());
          workflow.setName("Pre Condition Workflow-" + cond.getConditionName());
          workflow.getTasks().add(conditionTask);
          instance.setParentChildWorkflow(workflow);
          this.addToModelRepo(workflow);
          persist(instance);
          WorkflowProcessor subProcessor = fromWorkflowInstance(instance);
          processor.getSubProcessors().add(subProcessor);
          synchronized (processorCache) {
            processorCache.put(instance.getId(), subProcessor);
          }
        }


        // handle its tasks
        for (WorkflowTask task : inst.getParentChildWorkflow().getTasks()) {
          WorkflowInstance instance = new WorkflowInstance();
          WorkflowState taskWorkflowState = lifecycle.getDefaultLifecycle()
              .createState(
                  "Null",
                  "initial",
                  "Sub Task Workflow created by Workflow Processor Queue for workflow instance: "
                      + "[" + inst.getId() + "]");
          instance.setState(taskWorkflowState);
          instance.setPriority(inst.getPriority());
          instance.setCurrentTaskId(task.getTaskId());
          Graph taskGraph = new Graph();
          taskGraph.setExecutionType("task");
          taskGraph.setTask(task);
          ParentChildWorkflow workflow = new ParentChildWorkflow(taskGraph);
          workflow.setId("task-workflow-"
              + inst.getParentChildWorkflow().getId());
          workflow.setName("Task Workflow-" + task.getTaskName());
          workflow.getTasks().add(task);
          workflow.getGraph().setTask(task);
          instance.setParentChildWorkflow(workflow);
          this.addToModelRepo(workflow);
          persist(instance);
          WorkflowProcessor subProcessor = fromWorkflowInstance(instance);
          processor.getSubProcessors().add(subProcessor);
          synchronized (processorCache) {
            processorCache.put(instance.getId(), subProcessor);
          }
        }


        // handle its post conditions
        for (WorkflowCondition cond : inst.getParentChildWorkflow()
            .getPostConditions()) {
          WorkflowInstance instance = new WorkflowInstance();
          WorkflowState condWorkflowState = lifecycle
              .getDefaultLifecycle()
              .createState(
                  "Null",
                  "initial",
                  "Sub Post Condition Workflow created by Workflow Processor Queue for workflow instance: "
                      + "[" + inst.getId() + "]");
          instance.setState(condWorkflowState);
          instance.setPriority(inst.getPriority());
          WorkflowTask conditionTask = toConditionTask(cond);
          instance.setCurrentTaskId(conditionTask.getTaskId());
          Graph condGraph = new Graph();
          condGraph.setExecutionType("condition");
          condGraph.setCond(cond);
          condGraph.setTask(conditionTask);
          ParentChildWorkflow workflow = new ParentChildWorkflow(condGraph);
          workflow.setId("post-cond-workflow-"
              + inst.getParentChildWorkflow().getId());
          workflow
              .setName("Post Condition Workflow-" + cond.getConditionName());
          workflow.getTasks().add(conditionTask);
          instance.setParentChildWorkflow(workflow);
          this.addToModelRepo(workflow);
          persist(instance);
          WorkflowProcessor subProcessor = fromWorkflowInstance(instance);
          processor.getSubProcessors().add(subProcessor);
          synchronized (processorCache) {
            processorCache.put(instance.getId(), subProcessor);
          }
        }


      } else {
        // it's not a composite workflow, and it's either just a task processor
        // or a condition processor
        if (inst.getParentChildWorkflow().getGraph().getExecutionType()
            .equals("task")) {
          processor = new TaskProcessor(lifecycle, inst);
          WorkflowState taskProcessorState = getLifecycle(
              inst.getParentChildWorkflow()).createState(
              "Loaded",
              "initial",
              "Task Workflow instance with id: [" + inst.getId()
                  + "] loaded by processor queue.");
          inst.setState(taskProcessorState);


          // handle its pre-conditions
          for (WorkflowCondition cond : inst.getParentChildWorkflow()
              .getGraph().getTask().getPreConditions()) {
            WorkflowInstance instance = new WorkflowInstance();
            WorkflowState condWorkflowState = lifecycle
                .getDefaultLifecycle()
                .createState(
                    "Null",
                    "initial",
                    "Sub Pre Condition Workflow for Task created by Workflow Processor Queue for workflow instance: "
                        + "[" + inst.getId() + "]");
            instance.setState(condWorkflowState);
            instance.setPriority(inst.getPriority());
            WorkflowTask conditionTask = toConditionTask(cond);
            instance.setCurrentTaskId(conditionTask.getTaskId());
            Graph condGraph = new Graph();
            condGraph.setExecutionType("condition");
            condGraph.setCond(cond);
            condGraph.setTask(conditionTask);
            ParentChildWorkflow workflow = new ParentChildWorkflow(condGraph);
            workflow.setId("pre-cond-workflow-"
                + inst.getParentChildWorkflow().getGraph().getTask()
                    .getTaskId());
            workflow.setName("Task Pre Condition Workflow-"
                + cond.getConditionName());
            workflow.getTasks().add(conditionTask);
            instance.setParentChildWorkflow(workflow);
            this.addToModelRepo(workflow);
            persist(instance);
            WorkflowProcessor subProcessor = fromWorkflowInstance(instance);
            processor.getSubProcessors().add(subProcessor);
            synchronized (processorCache) {
              processorCache.put(instance.getId(), subProcessor);
            }
          }


          // handle its post-conditions
          for (WorkflowCondition cond : inst.getParentChildWorkflow()
              .getGraph().getTask().getPostConditions()) {
            WorkflowInstance instance = new WorkflowInstance();
            WorkflowState condWorkflowState = lifecycle
                .getDefaultLifecycle()
                .createState(
                    "Null",
                    "initial",
                    "Sub Post Condition Workflow for Task created by Workflow Processor Queue for workflow instance: "
                        + "[" + inst.getId() + "]");
            instance.setState(condWorkflowState);
            instance.setPriority(inst.getPriority());
            WorkflowTask conditionTask = toConditionTask(cond);
            instance.setCurrentTaskId(conditionTask.getTaskId());
            Graph condGraph = new Graph();
            condGraph.setExecutionType("condition");
            condGraph.setCond(cond);
            condGraph.setTask(conditionTask);
            ParentChildWorkflow workflow = new ParentChildWorkflow(condGraph);
            workflow.setId("post-cond-workflow-"
                + inst.getParentChildWorkflow().getGraph().getTask()
                    .getTaskId());
            workflow.setName("Task Post Condition Workflow-"
                + cond.getConditionName());
            workflow.getTasks().add(conditionTask);
            instance.setParentChildWorkflow(workflow);
            this.addToModelRepo(workflow);
            persist(instance);
            WorkflowProcessor subProcessor = fromWorkflowInstance(instance);
            processor.getSubProcessors().add(subProcessor);
            synchronized (processorCache) {
              processorCache.put(instance.getId(), subProcessor);
            }
          }


        } else if (inst.getParentChildWorkflow().getGraph().getExecutionType()
            .equals("condition")) {

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            return false;
    }


    public Hashtable getWorkflowInstanceById(String wInstId)
            throws EngineException {
        WorkflowInstance inst = null;


        try {
            inst = engine.getInstanceRepository().getWorkflowInstanceById(
                    wInstId);
        } catch (Exception e) {
            e.printStackTrace();
            LOG.log(Level.WARNING,
                    "Error obtaining workflow instance with ID: [" + wInstId
                            + "]: Message: " + e.getMessage());
            inst = new WorkflowInstance();
        }


        return XmlRpcStructFactory.getXmlRpcWorkflowInstance(inst);


    }

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                    "Getting workflow instances by status: retrieved: "
                            + workflowInsts.size() + " instances");


            try {
                for (Iterator i = workflowInsts.iterator(); i.hasNext();) {
                    WorkflowInstance wInst = (WorkflowInstance) i.next();
                    // pick up the description of the workflow
                    Workflow wDesc = repo.getWorkflowById(wInst.getWorkflow()
                            .getId());
                    // TODO: hack for now, fix this, we shouldn't have to cast
                    // here, bad
                    // design
                    if(wDesc == null){
                      //Possible dynamic workflow for instance
                      //reconsitute it from cache
                      wDesc = wInst.getWorkflow();
                      repo.addWorkflow(wDesc);
                    }
                    wInst.setWorkflow(wDesc);
                    Hashtable workflowInstance = XmlRpcStructFactory
                            .getXmlRpcWorkflowInstance(wInst);
                    workflowInstances.add(workflowInstance);
                }
            } catch (Exception e) {

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            LOG.log(Level.INFO, "Getting workflow instances: retrieved: "
                    + workflowInsts.size() + " instances");


            try {
                for (Iterator i = workflowInsts.iterator(); i.hasNext();) {
                    WorkflowInstance wInst = (WorkflowInstance) i.next();
                    // pick up the description of the workflow
                    Workflow wDesc = repo.getWorkflowById(wInst.getWorkflow()
                            .getId());
                    if(wDesc == null){
                      //possible dynamic workflow
                      //reconsitute it from cached instance
                      wDesc = wInst.getWorkflow();
                      //now save it
                      repo.addWorkflow(wDesc);


                    }
                    // TODO: hack for now, fix this, we shouldn't have to cast
                    // here, bad
                    // design
                    wInst.setWorkflow(wDesc);
                    Hashtable workflowInstance = XmlRpcStructFactory
                            .getXmlRpcWorkflowInstance(wInst);
                    workflowInstances.add(workflowInstance);
                }
                return workflowInstances;

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        met.addMetadata(metadata);
        return this.engine.updateMetadata(workflowInstId, met);
    }


    public synchronized boolean updateWorkflowInstance(Hashtable workflowInst) {
        WorkflowInstance wInst = XmlRpcStructFactory
                .getWorkflowInstanceFromXmlRpc(workflowInst);
        return doUpdateWorkflowInstance(wInst);


    }

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    }


    public synchronized boolean setWorkflowInstanceCurrentTaskStartDateTime(
            String wInstId, String startDateTimeIsoStr) {
        WorkflowInstance wInst = null;
        try {
            wInst = this.engine.getInstanceRepository()
                    .getWorkflowInstanceById(wInstId);
        } catch (InstanceRepositoryException e) {
            e.printStackTrace();
            return false;
        }
        wInst.setCurrentTaskStartDateTimeIsoStr(startDateTimeIsoStr);
        return doUpdateWorkflowInstance(wInst);
    }

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        return doUpdateWorkflowInstance(wInst);
    }


    public synchronized boolean setWorkflowInstanceCurrentTaskEndDateTime(
            String wInstId, String endDateTimeIsoStr) {
        WorkflowInstance wInst = null;
        try {
            wInst = this.engine.getInstanceRepository()
                    .getWorkflowInstanceById(wInstId);
        } catch (InstanceRepositoryException e) {
            e.printStackTrace();
            return false;
        }
        wInst.setCurrentTaskEndDateTimeIsoStr(endDateTimeIsoStr);
        return doUpdateWorkflowInstance(wInst);
    }

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