关于duedate补充

   在jbpm 3.2.2版本中 要实现过去触发做某件事情，除了要配置流程定义和写额外的程序以外，还要将web.xml里面增加过滤器：
      <filter>
<filter-name>hibernateFilter</filter-name>
<filter-class>
org.springframework.orm.hibernate3.support.OpenSessionInViewFilter
</filter-class>

<init-param>
<param-name>singleSession</param-name>
<param-value>false</param-value>
</init-param>
</filter>
       <filter-mapping>
<filter-name>hibernateFilter</filter-name>
<url-pattern>*.mmg</url-pattern>
</filter-mapping>
如果配置成功 则会在服务启动的时候 你的工作系统会不断的读取数据表，下面是该读取的内容：
    Hibernate: select top 1 job0_.ID_ as ID1_22_, job0_.VERSION_ as VERSION3_22_, job0_.DUEDATE_ as DUEDATE4_22_, job0_.PROCESSINSTANCE_ as PROCESSI5_22_, job0_.TOKEN_ as TOKEN6_22_, job0_.TASKINSTANCE_ as TASKINST7_22_, job0_.ISSUSPENDED_ as ISSUSPEN8_22_, job0_.ISEXCLUSIVE_ as ISEXCLUS9_22_, job0_.LOCKOWNER_ as LOCKOWNER10_22_, job0_.LOCKTIME_ as LOCKTIME11_22_, job0_.EXCEPTION_ as EXCEPTION12_22_, job0_.RETRIES_ as RETRIES13_22_, job0_.NAME_ as NAME14_22_, job0_.REPEAT_ as REPEAT15_22_, job0_.TRANSITIONNAME_ as TRANSIT16_22_, job0_.ACTION_ as ACTION17_22_, job0_.GRAPHELEMENTTYPE_ as GRAPHEL18_22_, job0_.GRAPHELEMENT_ as GRAPHEL19_22_, job0_.NODE_ as NODE20_22_, job0_.CLASS_ as CLASS2_22_ from JBPM_JOB job0_ where (job0_.LOCKOWNER_ is null or job0_.LOCKOWNER_=?) and job0_.RETRIES_>0 and job0_.DUEDATE_<=? and job0_.ISSUSPENDED_<>1 order by job0_.DUEDATE_ asc

Hibernate: select top 1 job0_.ID_ as ID1_22_, job0_.VERSION_ as VERSION3_22_, job0_.DUEDATE_ as DUEDATE4_22_, job0_.PROCESSINSTANCE_ as PROCESSI5_22_, job0_.TOKEN_ as TOKEN6_22_, job0_.TASKINSTANCE_ as TASKINST7_22_, job0_.ISSUSPENDED_ as ISSUSPEN8_22_, job0_.ISEXCLUSIVE_ as ISEXCLUS9_22_, job0_.LOCKOWNER_ as LOCKOWNER10_22_, job0_.LOCKTIME_ as LOCKTIME11_22_, job0_.EXCEPTION_ as EXCEPTION12_22_, job0_.RETRIES_ as RETRIES13_22_, job0_.NAME_ as NAME14_22_, job0_.REPEAT_ as REPEAT15_22_, job0_.TRANSITIONNAME_ as TRANSIT16_22_, job0_.ACTION_ as ACTION17_22_, job0_.GRAPHELEMENTTYPE_ as GRAPHEL18_22_, job0_.GRAPHELEMENT_ as GRAPHEL19_22_, job0_.NODE_ as NODE20_22_, job0_.CLASS_ as CLASS2_22_ from JBPM_JOB job0_ where (job0_.LOCKOWNER_ is null or job0_.LOCKOWNER_=?) and job0_.RETRIES_>0 and job0_.ISSUSPENDED_<>1 order by job0_.DUEDATE_ asc

这样，一个成功的超时触发事件便完成