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

Introduction

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

Source

/*
 * 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.util.List;
import java.util.Map;
import java.util.Map.Entry;
import java.util.Set;

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.JbpmContext;
import org.jbpm.db.GraphSession;
import org.jbpm.graph.def.ProcessDefinition;
import org.jbpm.taskmgmt.def.Task;
import org.springframework.stereotype.Controller;
import org.springframework.ui.ModelMap;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.servlet.ModelAndView;

import com.glaf.core.config.ViewProperties;
import com.glaf.core.util.ResponseUtils;
import com.glaf.jbpm.container.ProcessContainer;
import com.glaf.jbpm.context.Context;
import com.glaf.jbpm.export.MxJbpmProcessExporter;

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

    public MxJbpmDefinitionController() {

    }

    @RequestMapping("/download")
    public void download(HttpServletRequest request, HttpServletResponse response) {
        long id = 0;
        String processDefinitionId = request.getParameter("processDefinitionId");
        String processName = request.getParameter("processName");
        JbpmContext jbpmContext = null;
        String filename = null;
        byte[] bytes = null;
        try {
            jbpmContext = ProcessContainer.getContainer().createJbpmContext();
            if (StringUtils.isNotEmpty(processDefinitionId) && StringUtils.isNumeric(processDefinitionId)) {
                ProcessDefinition processDefinition = jbpmContext.getGraphSession()
                        .getProcessDefinition(Long.parseLong(processDefinitionId));
                if (processDefinition != null) {
                    id = processDefinition.getId();
                    filename = processDefinition.getName() + ".jpdl.zip";
                }
            } else if (StringUtils.isNotEmpty(processName)) {
                ProcessDefinition processDefinition = jbpmContext.getGraphSession()
                        .findLatestProcessDefinition(processName);
                if (processDefinition != null) {
                    id = processDefinition.getId();
                    filename = processDefinition.getName() + ".jpdl.zip";
                }
            }
        } catch (Exception ex) {
            logger.debug(ex);
        } finally {
            Context.close(jbpmContext);
        }
        if (id > 0) {
            MxJbpmProcessExporter exporter = new MxJbpmProcessExporter();
            bytes = exporter.zipJpdl(id, "UTF-8");
            if (bytes != null) {
                try {
                    ResponseUtils.download(request, response, bytes, filename);
                } catch (Exception ex) {
                }
            }
        }
    }

    @RequestMapping
    public ModelAndView list(HttpServletRequest request, ModelMap modelMap) {
        GraphSession graphSession = null;
        JbpmContext jbpmContext = null;
        try {
            jbpmContext = ProcessContainer.getContainer().createJbpmContext();
            graphSession = jbpmContext.getGraphSession();

            List<ProcessDefinition> processDefinitions = graphSession.findAllProcessDefinitions();
            modelMap.put("processDefinitions", processDefinitions);
        } catch (Exception ex) {
            logger.debug(ex);
        } finally {
            Context.close(jbpmContext);
        }

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

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

        String x_view = ViewProperties.getString("jbpm_definition.list");
        if (StringUtils.isNotEmpty(x_view)) {
            return new ModelAndView(x_view, modelMap);
        }

        return new ModelAndView("/jbpm/definition/list", modelMap);
    }

    @RequestMapping("/task")
    public ModelAndView task(
            @RequestParam(value = "processDefinitionId", required = false) String processDefinitionId,
            @RequestParam(value = "processName", required = false) String processName, ModelMap modelMap) {
        List<Task> rows = new java.util.ArrayList<Task>();
        ProcessDefinition processDefinition = null;
        GraphSession graphSession = null;
        JbpmContext jbpmContext = null;
        try {
            jbpmContext = ProcessContainer.getContainer().createJbpmContext();
            graphSession = jbpmContext.getGraphSession();
            if (StringUtils.isNumeric(processDefinitionId)) {
                processDefinition = graphSession.getProcessDefinition(Long.valueOf(processDefinitionId));
            } else if (StringUtils.isNotEmpty(processName)) {
                processDefinition = jbpmContext.getGraphSession().findLatestProcessDefinition(processName);
            }

            if (processDefinition != null) {
                modelMap.put("processDefinition", processDefinition);
                Map<String, Task> taskMap = processDefinition.getTaskMgmtDefinition().getTasks();
                if (taskMap != null && taskMap.size() > 0) {
                    Set<Entry<String, Task>> entrySet = taskMap.entrySet();
                    for (Entry<String, Task> entry : entrySet) {
                        String name = entry.getKey();
                        Task task = entry.getValue();
                        if (name != null && task != null) {
                            rows.add(task);
                        }
                    }
                    modelMap.put("tasks", rows);
                }
            }

        } catch (Exception ex) {
            logger.debug(ex);
        } finally {
            Context.close(jbpmContext);
        }

        String x_view = ViewProperties.getString("jbpm_definition.task");
        if (StringUtils.isNotEmpty(x_view)) {
            return new ModelAndView(x_view, modelMap);
        }

        return new ModelAndView("/jbpm/definition/task", modelMap);
    }

}