gov.nih.nci.cabig.caaers.workflow.handler.NodeSkipActionHandler.java Source code

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Here is the source code for gov.nih.nci.cabig.caaers.workflow.handler.NodeSkipActionHandler.java

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/*******************************************************************************
 * Copyright SemanticBits, Northwestern University and Akaza Research
 * 
 * Distributed under the OSI-approved BSD 3-Clause License.
 * See http://ncip.github.com/caaers/LICENSE.txt for details.
 ******************************************************************************/
package gov.nih.nci.cabig.caaers.workflow.handler;

import gov.nih.nci.cabig.caaers.domain.Person;
import gov.nih.nci.cabig.caaers.domain.workflow.TaskConfig;
import gov.nih.nci.cabig.caaers.service.workflow.WorkflowService;
import gov.nih.nci.cabig.caaers.workflow.callback.CreateTaskJbpmCallback;

import java.util.List;

import org.apache.commons.lang.BooleanUtils;
import org.jbpm.graph.def.Action;
import org.jbpm.graph.def.Node;
import org.jbpm.graph.exe.ExecutionContext;
import org.jbpm.graph.exe.ProcessInstance;
import org.jbpm.graph.exe.Token;
import org.springframework.beans.factory.annotation.Required;
import org.springframework.transaction.annotation.Transactional;

/**
 * This action handler is responsible to determine whether this node should act as an auto-node or not. 
 *  - Should check whether, the task in context is marked ("applicable=yes"), if no should force leaving this node.
 * @author Biju Joseph
 * @author Sameer
 */

@SuppressWarnings("serial")
@Transactional
public class NodeSkipActionHandler extends Action {

    private WorkflowService workflowService;

    /**
     * Checks whether this node is applicable (configured in admin page by admin)
     * If applicable, 
     *   - Identify the assignees of the task and create tasks. 
     * If not applicable,
     *   - The flow will leave the node (to the default transition)
     */
    public void execute(ExecutionContext context) throws Exception {

        String workflowDefinitionName = context.getProcessDefinition().getName();
        ProcessInstance pInstance = context.getProcessInstance();
        Token rootToken = pInstance.getRootToken();

        Node currentNode = rootToken == null ? null : rootToken.getNode();
        String taskNodeName = currentNode.getName();

        TaskConfig taskConfig = workflowService.findTaskConfig(workflowDefinitionName, taskNodeName);
        if (taskConfig == null || BooleanUtils.isNotTrue(taskConfig.getApplicable())) {
            //not applicable
            currentNode.leave(context);
        } else {
            //applicable, so create tasks
            List<Person> assignees = workflowService.findTaskAssignees(pInstance, taskNodeName);
            workflowService.createTaskInstances(new CreateTaskJbpmCallback(context, assignees));
        }

    }

    @Required
    public void setWorkflowService(WorkflowService workflowService) {
        this.workflowService = workflowService;
    }

}