流程图：1-4-2-3-5-6-7
流程文档：
1.部署流程：
略，可参考请假流程
2.启动流程
select * from act_ru_execution;
select * from act_ru_task;
select * from act_ru_variable;
select * from act_ru_identitylink;
select * from act_hi_procinst;
略
select * from act_hi_actinst;
略
select * from act_hi_taskinst;
略
select * from act_hi_varinst;
略
select * from act_hi_identitylink;
略
3.办理流程
select * from act_ru_execution;
select * from act_ru_task;
select * from act_ru_variable;
select * from act_ru_identitylink;
select * from act_hi_procinst;
select * from act_hi_actinst;
select * from act_hi_taskinst;
select * from act_hi_varinst;
select * from act_hi_identitylink;
4.办理流程
select * from act_ru_execution;
此时parallelgateway2的IS_ACTIVE_字段为0
select * from act_ru_task;
select * from act_ru_variable;
select * from act_ru_identitylink;
select * from act_hi_procinst;
select * from act_hi_actinst;
此时parallelgateway2的END_TIME_字段已经有值了，是否合理?
select * from act_hi_taskinst;
select * from act_hi_varinst;
select * from act_hi_identitylink;
5.办理流程
select * from act_ru_execution;
select * from act_ru_task;
select * from act_ru_variable;
同上
select * from act_ru_identitylink;
select * from act_hi_procinst;
select * from act_hi_actinst;
select * from act_hi_taskinst;
select * from act_hi_varinst;
select * from act_hi_identitylink;
6.办理流程
select * from act_ru_execution;
select * from act_ru_task;
select * from act_ru_variable;
同上
select * from act_ru_identitylink;
select * from act_hi_procinst;
select * from act_hi_actinst;
select * from act_hi_taskinst;
select * from act_hi_varinst;
同上
select * from act_hi_identitylink;
7.办理流程
select * from act_ru_execution;
select * from act_ru_task;
select * from act_ru_variable;
同上
select * from act_ru_identitylink;
同上
select * from act_hi_procinst;
select * from act_hi_actinst;
select * from act_hi_taskinst;
select * from act_hi_varinst;
同上
select * from act_hi_identitylink;
同上
8.办理流程
select * from act_ru_execution;
select * from act_ru_task;
select * from act_ru_variable;
同上
select * from act_ru_identitylink;
select * from act_hi_procinst;
select * from act_hi_actinst;
select * from act_hi_taskinst;
select * from act_hi_varinst;
select * from act_hi_identitylink;
9.办理流程
select * from act_ru_execution;
select * from act_ru_task;
select * from act_ru_variable;
select * from act_ru_identitylink;
select * from act_hi_procinst;
select * from act_hi_actinst order by END_TIME_ ASC;
select * from act_hi_taskinst order by END_TIME_ ASC;
select * from act_hi_varinst;
select * from act_hi_identitylink;
总结：
并行网关的特性：
并行网关后的连线全部有效，不进行条件表达式判断。
问题1：并行网关是怎么实现聚合效果的？
推测：根据并行网关的入线数量进行判断，比如parallelgateway2有两个入线，那么当有两个不同的execution执行到网关时，流程就会继续流转。
源码验证：
