Home php教程 php手册 介绍一个真正符合中国国情的工作流设计参考(包括PHP实现)

介绍一个真正符合中国国情的工作流设计参考(包括PHP实现)

Mar 24, 2017 am 10:27 AM
php implementation Workflow

 开源的工作流很少有让人满意的,即便是国内用的比较多的jbpm,用起来也会觉得很便扭。再加上PHP中没有什么好用的工作流,于是干脆自己设计一个,设计的原则如下:

1 根据80/20原则,只使用wfmc模型中最符合自身应用的20%功能

2 充分吸收国内使用jbpm开发BOSS中遇到的问题,工作流引擎只负责参数的收集和流程的流转,具体和业务的控制,交给每个流程定制的控制类去实现。

3 表单采用简单的html+控制标签的方法实现

4 权限和模板引擎,以及其它辅助函数直接使用办公系统自带的框架

5 充分利用PHP语言的特点,流程设计是基于数据库的,程序上使用OO设计,但采用重对象的方法

6 不把可视化设计流程的工作交给最终客户,而且由设计时完成,因此不考虑流程版本更新的问题

一、工作流数据表设计

tbl_workflow_defination:工作流定义表

defination_id

流程id

 

defination_name

流程名称

 

defination_handler

流程处理辅助文件,每个工作流一个文件

自定义处理文件,及其对象。例如workflow-proporsal-handler.php,其中定义对象proposal

tbl_workflow_node:流程结点步骤表

node_id

结点id

 

defination_id

流程id

 

node_index

结点序号

结点的step

node_name

结点名称

 

node_type

结点类型

1人为决策,2自动处理(直接执行execute_function)3等待外部响应(例如外部WS触发),4分支,5汇总 6结束结点(此结点执行时候自动终止进程)

init_function

流程初始函数

 

run_function

流程运行函数

 

save_function

流程保存函数

 

transit_function

流程流转函数

 

prev_node_index

前结点序号

例如1。开始结点没有

执行前,通过此来校验一下流程

next_node_index

后结点序号

例如[同意]3,[不同意]4。尾结点或要结束的结点没有,若没有,直接调用end

executor

执行角色,组,人

role[1,2] group[1,2] user[1,2],为空由运行时决定

execute_type

执行类型

0需所有人执行 1只需一人执行

remind

提醒

0不提醒 1邮件 2短信 3邮件和短信

field

可编辑的字段

name,content

max_day

最长时间()

 

tbl_workflow_process:流程执行进程表

process_id

进程id

 

defination_id

流程id

 

process_desc

进程描述

显示在我的工作台中

context

上下文

存放上下文变量,例如业务表的id

current_node_index

当前结点序号

 

start_time

流程启动时间

如遇分支、汇合显示为:

1=》3,4=》3,5=》6

finish_time

流程完成时间

 

state

状态

1运行 2结束

start_user

发起人

发起人,用于显示自己的流程

tbl_workflow_thread :流程执行线程表

thread_id

线程id

 

process_id

进程id

 

process_desc

进程描述

 

node_id

结点id

 

node_name

结点名称

 

executor

执行人

 

start_time

线程生成时间

 

receive_time

线程接收时间

 

finish_time

线程完成时间

 

max_time

结点规定的最长时间

 

state

状态

0未接收 1已接收 2已处理

二、常见流程

人工决策


领导传阅


部门领导审批


填写表单


结束


放弃


提交


同意


重填(退回)


不同意


完成

外部响应


发送支付信息


接收支付成功响应(外部WS触发该流程)

三、PHP设计

运行的函数由结点在设计时候决定,如果没有设定,就使用默认的函数。利用了PHP语言的以下特性

<?php
class Foo
{
    function Variable()
    {
        $name = &#39;Bar&#39;;
        $this->$name(); // This calls the Bar() method
    }
    
    function Bar()
    {
        echo "This is Bar";
    }
}

$foo = new Foo();
$funcname = "Variable";
$foo->$funcname();  // This calls $foo->Variable()

?>
Copy after login

使用前可以用method_exists来检查

WorkflowService.php

  WorkflowService

    $defination

$process

$node

$thread

$input 用户输入的和流程有关的变量

list_defination()

{

}

init_process(defination_id)

{  global user;

取得$defination,得到业务的handler,例如WorkflowProposalHandler

   建立$process行记录

}

start_process()

调用WorkflowProposalHandler->start($process)//新建业务对象,并把业务类的参数例如proposal_id放到$process[‘context’]里面

   init_thread(1);  //默认调用第一个结点

}

 

list_ my_thread ()

{  global user;

}

 

init_thread(node_index)

{

  取得$node

  取得$process

  修改$process为运行到当前结点

  Switch($node[‘node_type’])

   Case 1: 人工决策

       建立$thread

       WorkflowProposalHandler-> init_function ($process,$node,$thread)

       发送提醒

Case 2: 自动处理

    建立$thread

    WorkflowProposalHandler-> init_function ($process,$node,$thread)

       调用run_thread(thread_id)

Case 3: 等待外部响应

    建立$thread

    WorkflowProposalHandler-> init_function ($process,$node,$thread)

Case 4: 分支

    取得所有分支的子结点

    init_thread(子结点)

Case 5: 汇总:

    取得所有前结点,如果所有前结点的Thread都结束了,调出下一结点

       调用init_thread(子结点)

Case 6: 结束:直接结束进程process

    end_process()

}

run_thread(thread_id)

{   

取得$node

取得$process

取得$thread

  Switch($node[‘node_type’])

   Case 1: 人工决策

       修改$thread为已接收

          WorkflowProposalHandler-> run_function ($process,$node,$thread)显示表单

Case 2: 自动处理

    修改$thread为已接收

    $next_node_id=WorkflowProposalHandler-> run_function ($process,$node,$thread)

       调用transit_thread(thread_id, $next_node_id)

Case 3: 等待外部响应

    修改$thread为已接收

    $next_node_id=WorkflowProposalHandler-> run_function ($process,$node,$thread)

    transit_thread(thread_id, $next_node_id)

Case 4: 分支

Case 5: 汇总:

Case 6: 结束:

}

save_thread(thread_id)

{  //保存结点数据

取得$node

取得$process

取得$thread

  Switch($node[‘node_type’])

   Case 1: 人工决策

          WorkflowProposalHandler-> save_function ($process,$node,$thread)保存表单

WorkflowProposalHandler-> run_function ($process,$node,$thread)显示表单

Case 2: 自动处理

Case 3: 等待外部响应

Case 4: 分支

Case 5: 汇总:

Case 6: 结束:

}

transit_thread(thread_id, $next_node_id)

{ 取得$node

  取得$process

取得$thread

  Switch($node[‘node_type’])

   Case 1: 人工决策

      WorkflowProposalHandler->transit_function($process,$node,$thread,$next_node_id)  

          修改$thread为已完成

          If($next_node_id < $ cur_node_id) { //回退

删除所有大于$next_node_idThread

}

init_thread($next_node_id)

Case 2: 自动处理

修改$thread为已完成

If($next_node_id < $ cur_node_id) { //回退

删除所有大于$next_node_idThread

}

init _thread($next_node_id)

Case 3: 等待外部响应

修改$thread为已完成

If($next_node_id < $ cur_node_id) { //回退

删除所有大于$next_node_idThread

}

init _thread($next_node_id)

Case 4: 分支

Case 5: 汇总:

Case 6: 结束:

}

end_process()

list_my_process

view_process

workflow_proposal_handler.php

WorkflowProposalHandler

start()

prepare_input() 准备用户输入变量,从$_POST收集

init_function () 线程建立后调用的默认函数,当流程的执行者由程序生成时,在此函数内更改$threadexecutor,例如直接赋值user[2]

run_function () 线程运行化时候调用的默认函数

save_function () 保存运行信息

transit_function ()执行流转

sendmail 其它结点调用函数

workflow.php

switch(op)

case list_defination

参数:无

WorkflowService->list_defination()

case start_process :启动

       参数:defination_id

       WorkflowService->init_process(defination_id)

WorkflowService->start_process()

   case list_ my_thread :待处理的列表

       WorkflowService->list_ my_thread()

   case run_thread :

       参数:thread_id

       WorkflowService->run_thread(thread_id)

case save_thread :

    参数:thread_id

    input收集起来(所有的变量以 f_开头),赋给WorkflowServiceInput,另外还要获得thread_id

    WorkflowService->save_thread(thread_id)

   case transit_thread :

   参数:thread_id

input收集起来,赋给WorkflowServiceInput,另外还要获得thread_id

$next_node_id = 得到用户选择的下一结点id

WorkflowService-> transit _thread(thread_id$next_node_id)

   case list_my_process:所有我发起的流程

case list_all_process:所有我发起的流程

case view_process :

在其它程序中初始化流程

    1先自行建立好业务表单

2WorkflowService->init_process(defination_id)

3把建好的业务表单的ID放在processcontext里面

4WorkflowService->init_thread(1)

WorkflowService->transit_thread(12)通过手动调用把前面的流程过掉

外部服务继续流转流程(只用于自动流程)

1 input收集起来,赋给WorkflowServiceInput,另外还要获得thread_id

2 WorkflowService->run_thread(thread_id)

相关文章:

PHP 工作流 自定义表单解决方案

怎么简单实现工作流?

通达OA2015版工作流插件和列表控件数据解析

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