com.liferay.portlet.workflowinstances.action.EditWorkflowInstanceAction.java Source code

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Here is the source code for com.liferay.portlet.workflowinstances.action.EditWorkflowInstanceAction.java

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/**
 * Copyright (c) 2000-2012 Liferay, Inc. All rights reserved.
 *
 * This library is free software; you can redistribute it and/or modify it under
 * the terms of the GNU Lesser General Public License as published by the Free
 * Software Foundation; either version 2.1 of the License, or (at your option)
 * any later version.
 *
 * This library is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
 * details.
 */

package com.liferay.portlet.workflowinstances.action;

import com.liferay.portal.kernel.servlet.SessionErrors;
import com.liferay.portal.kernel.util.Constants;
import com.liferay.portal.kernel.util.GetterUtil;
import com.liferay.portal.kernel.util.ParamUtil;
import com.liferay.portal.kernel.util.WebKeys;
import com.liferay.portal.kernel.workflow.WorkflowConstants;
import com.liferay.portal.kernel.workflow.WorkflowException;
import com.liferay.portal.kernel.workflow.WorkflowHandler;
import com.liferay.portal.kernel.workflow.WorkflowHandlerRegistryUtil;
import com.liferay.portal.kernel.workflow.WorkflowInstance;
import com.liferay.portal.kernel.workflow.WorkflowInstanceManagerUtil;
import com.liferay.portal.security.auth.PrincipalException;
import com.liferay.portal.service.WorkflowInstanceLinkLocalServiceUtil;
import com.liferay.portal.struts.PortletAction;
import com.liferay.portal.theme.ThemeDisplay;

import java.io.Serializable;

import java.util.Map;

import javax.portlet.ActionRequest;
import javax.portlet.ActionResponse;
import javax.portlet.PortletConfig;
import javax.portlet.RenderRequest;
import javax.portlet.RenderResponse;

import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;

/**
 * @author Marcellus Tavares
 */
public class EditWorkflowInstanceAction extends PortletAction {

    @Override
    public void processAction(ActionMapping mapping, ActionForm form, PortletConfig portletConfig,
            ActionRequest actionRequest, ActionResponse actionResponse) throws Exception {

        String cmd = ParamUtil.getString(actionRequest, Constants.CMD);

        try {
            if (cmd.equals(Constants.DELETE)) {
                deleteInstance(actionRequest);
            } else if (cmd.equals(Constants.SIGNAL)) {
                signalInstance(actionRequest);
            }

            sendRedirect(actionRequest, actionResponse);
        } catch (Exception e) {
            if (e instanceof PrincipalException || e instanceof WorkflowException) {

                SessionErrors.add(actionRequest, e.getClass().getName());

                setForward(actionRequest, "portlet.workflow_instances.error");
            } else {
                throw e;
            }
        }
    }

    @Override
    public ActionForward render(ActionMapping mapping, ActionForm form, PortletConfig portletConfig,
            RenderRequest renderRequest, RenderResponse renderResponse) throws Exception {

        try {
            ActionUtil.getWorkflowInstance(renderRequest);
        } catch (Exception e) {
            if (e instanceof WorkflowException) {

                SessionErrors.add(renderRequest, e.getClass().getName());

                return mapping.findForward("portlet.workflow_instances.error");
            } else {
                throw e;
            }
        }

        String forward = getForward(renderRequest, "portlet.workflow_instances.edit_workflow_instance");

        return mapping.findForward(forward);
    }

    protected void deleteInstance(ActionRequest actionRequest) throws Exception {

        ThemeDisplay themeDisplay = (ThemeDisplay) actionRequest.getAttribute(WebKeys.THEME_DISPLAY);

        long workflowInstanceId = ParamUtil.getLong(actionRequest, "workflowInstanceId");

        WorkflowInstance workflowInstance = WorkflowInstanceManagerUtil
                .getWorkflowInstance(themeDisplay.getCompanyId(), workflowInstanceId);

        Map<String, Serializable> workflowContext = workflowInstance.getWorkflowContext();

        long companyId = GetterUtil.getLong(workflowContext.get(WorkflowConstants.CONTEXT_COMPANY_ID));
        long groupId = GetterUtil.getLong(workflowContext.get(WorkflowConstants.CONTEXT_GROUP_ID));
        String className = GetterUtil.getString(workflowContext.get(WorkflowConstants.CONTEXT_ENTRY_CLASS_NAME));
        long classPK = GetterUtil.getLong(workflowContext.get(WorkflowConstants.CONTEXT_ENTRY_CLASS_PK));

        WorkflowHandler workflowHandler = WorkflowHandlerRegistryUtil.getWorkflowHandler(className);

        workflowHandler.updateStatus(WorkflowConstants.STATUS_DRAFT, workflowContext);

        WorkflowInstanceLinkLocalServiceUtil.deleteWorkflowInstanceLink(companyId, groupId, className, classPK);
    }

    protected void signalInstance(ActionRequest actionRequest) throws Exception {

        ThemeDisplay themeDisplay = (ThemeDisplay) actionRequest.getAttribute(WebKeys.THEME_DISPLAY);

        long workflowInstanceId = ParamUtil.getLong(actionRequest, "workflowInstanceId");

        String transitionName = ParamUtil.getString(actionRequest, "transitionName");

        WorkflowInstanceManagerUtil.signalWorkflowInstance(themeDisplay.getCompanyId(), themeDisplay.getUserId(),
                workflowInstanceId, transitionName, null);
    }

    @Override
    protected boolean isCheckMethodOnProcessAction() {
        return _CHECK_METHOD_ON_PROCESS_ACTION;
    }

    private static final boolean _CHECK_METHOD_ON_PROCESS_ACTION = false;

}