com.glaf.jbpm.web.springmvc.MxJbpmTakeTaskController.java Source code

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Here is the source code for com.glaf.jbpm.web.springmvc.MxJbpmTakeTaskController.java

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/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.glaf.jbpm.web.springmvc;

import java.io.StringWriter;
import java.io.Writer;
import java.util.Collection;
import java.util.List;
import java.util.Map;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.commons.lang3.StringUtils;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.jbpm.graph.node.TaskNode;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.ModelAndView;

import com.glaf.core.config.CustomProperties;
import com.glaf.core.config.ViewProperties;
import com.glaf.core.util.LogUtils;
import com.glaf.core.util.ParamUtils;
import com.glaf.core.util.RequestUtils;
import com.glaf.template.util.TemplateUtils;
import com.glaf.jbpm.container.ProcessContainer;
import com.glaf.jbpm.model.ActivityInstance;
import com.glaf.jbpm.model.TaskItem;

@Controller("/jbpm/take")
@RequestMapping("/jbpm/take")
public class MxJbpmTakeTaskController {
    protected final static Log logger = LogFactory.getLog(MxJbpmTakeTaskController.class);

    public MxJbpmTakeTaskController() {

    }

    @RequestMapping
    public ModelAndView takeTask(HttpServletRequest request, HttpServletResponse response) {
        Map<String, Object> paramMap = RequestUtils.getParameterMap(request);
        Long processInstanceId = ParamUtils.getLong(paramMap, "processInstanceId");
        Long taskInstanceId = ParamUtils.getLong(paramMap, "taskInstanceId");
        String actorId = RequestUtils.getActorId(request);
        ProcessContainer container = ProcessContainer.getContainer();
        boolean canSubmit = false;
        TaskItem taskItem = null;
        String processName = null;
        if (taskInstanceId != null && StringUtils.isNotEmpty(actorId)) {
            /**
             * ????
             */
            taskItem = container.getTaskItem(taskInstanceId, actorId);
            if (taskItem != null) {
                if (processInstanceId != null) {
                    canSubmit = true;
                    processInstanceId = taskItem.getProcessInstanceId();
                    processName = taskItem.getProcessName();
                }
            }
        } else if (processInstanceId != null && StringUtils.isNotEmpty(actorId)) {
            /**
             * ?????
             */
            taskItem = container.getMinTaskItem(actorId, processInstanceId);
            if (taskItem != null) {
                canSubmit = true;
                taskInstanceId = taskItem.getTaskInstanceId();
                processName = taskItem.getProcessName();
            }
        }

        /**
         * ???
         */
        if (canSubmit && taskInstanceId != null) {
            String routeMode = CustomProperties.getString(processName + "_routeMode");
            logger.debug("routeMode:" + routeMode);
            if (StringUtils.equals(routeMode, "MANUAL")) {
                if (taskInstanceId != null) {
                    Collection<String> transitionNames = container.getTransitionNames(taskInstanceId);
                    request.setAttribute("transitionNames", transitionNames);
                }
            } else if (StringUtils.equals(routeMode, "FREE")) {
                int signal = container.getSignal(taskInstanceId);
                if (signal != TaskNode.SIGNAL_LAST) {
                    Collection<String> nodeNames = container.getNodeNames(processInstanceId);
                    request.setAttribute("nodeNames", nodeNames);
                }
            }
            request.setAttribute("taskItem", taskItem);
        }

        /**
         * ???
         */
        if (processInstanceId != null) {
            List<ActivityInstance> ActivityInstances = container.getActivityInstances(processInstanceId);
            request.setAttribute("ActivityInstances", ActivityInstances);
        }

        /**
         * ?????<br>
         * ?????_take_template??jbpm_take_template
         * WEB-INF\conf\extension??
         */
        String templateId = ParamUtils.getString(paramMap, "z_templateId");

        if (taskItem != null) {
            templateId = CustomProperties.getString(processName + "_" + taskItem.getTaskName() + "_take_template");
        }
        if (StringUtils.isEmpty(templateId)) {
            templateId = CustomProperties.getString(processName + "_take_template");
        }
        if (StringUtils.isEmpty(templateId)) {
            templateId = CustomProperties.getString("jbpm_take_template");
        }
        logger.info("templateId=" + templateId);
        if (StringUtils.isNotEmpty(templateId)) {

            Map<String, Object> context = new java.util.HashMap<String, Object>();
            context.putAll(paramMap);
            context.put("actorId", actorId);
            context.put("contextPath", request.getContextPath());

            context.put("taskItem", taskItem);
            context.put("nodeNames", request.getAttribute("nodeNames"));
            context.put("ActivityInstances", request.getAttribute("ActivityInstances"));
            context.put("transitionNames", request.getAttribute("transitionNames"));
            try {
                logger.debug(context);
                Writer writer = new StringWriter();
                TemplateUtils.evaluate(templateId, context, writer);
                request.setAttribute("templateScript", writer.toString());
                String encoding = request.getParameter("encoding");
                if (encoding == null) {
                    encoding = "UTF-8";
                }
                request.setCharacterEncoding(encoding);
                response.setCharacterEncoding(encoding);
                response.setContentType("text/html;charset=" + encoding);
                response.getWriter().write(writer.toString());
                return null;
            } catch (Exception ex) {
                if (LogUtils.isDebug()) {
                    ex.printStackTrace();
                    logger.debug(ex);
                }
            }
        }

        String jx_view = request.getParameter("jx_view");

        if (StringUtils.isNotEmpty(jx_view)) {
            return new ModelAndView(jx_view);
        }

        String x_view = ViewProperties.getString("jbpm_take.takeTask");
        if (StringUtils.isNotEmpty(x_view)) {
            return new ModelAndView(x_view);
        }

        return new ModelAndView("/jbpm/take");
    }
}