WF_Process—理解

WF_Process—理解

ProcessInstance.hbm.xml：

<? xml version = " 1.0 "  encoding = " UTF-8 " ?>

<! DOCTYPE hibernate - mapping PUBLIC
     " -//Hibernate/Hibernate Mapping DTD 3.0//EN "  
     " http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd " >

< hibernate - mapping
>
     < class
        name = " com.xindeco.workflow.ProcessInstance "
        table = " WF_PROCESS "
        dynamic - update = " true "
        dynamic - insert = " true "
        select - before - update = " false "
        optimistic - lock = " version "
     >

         < id
            name = " ID "
            column = " ID "
            type = " long "
            length = " 30 "
         >
             < generator  class = " native " >
             </ generator >
         </ id >

         < discriminator
            column = " bizClass "
            type = " string "
         />
        
         < property
            name = " state "
            type = " java.lang.Integer "
            update = " true "
            insert = " true "
            access = " property "
            column = " state "
            length = " 10 "
         />
        
         < many - to - one
            name = " flow "
             class = " com.xindeco.workflow.WFFlow "
            cascade = " none "
            outer - join = " auto "
            update = " true "
            insert = " true "
            access = " property "
            column = " flowId "
         />

         < set
            name = " tasks "
            lazy = " true "
            inverse = " true "
            cascade = " delete "
            sort = " unsorted "
         >

               < key
                  column = " processId "
               >
               </ key >

               < one - to - many
                   class = " com.xindeco.workflow.WFTask "
               />

         </ set >

     </ class >

</ hibernate - mapping >

CollRegPI.hbm.xml：

<? xml version = " 1.0 " ?>
<! DOCTYPE hibernate - mapping PUBLIC
       " -//Hibernate/Hibernate Mapping DTD 3.0//EN "
           " http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd " >

< hibernate - mapping  default - access = " field "   >

   < subclass name = " com.xindeco.business.pojo.wf.CollRegPI "
            discriminator - value = "2 "
             extends = " com.xindeco.workflow.ProcessInstance "
            lazy = " false " >

             < many - to - one name = " collReg "
                  class = " com.xindeco.business.pojo.CollReg "
                 column = " bizId "
                 cascade = " none " />
</ subclass >
</ hibernate - mapping >

数据库的数据：

     id    flowid    bizId   bizClass   state
  21       2           9          2              0
 22         2         10         2              0
 23         2         11         2              0
 24         2         12         2              0
 25         2         13         2              0
 26         2         14         2              0
 29         2         17         2              0
 30         2         18         2              1
 44         4         1          32             0
 45         4         2           32             1
 46         5          1          33             0
 47         5          2           33             1
 48         5          3           33             0
 50         3          1            3              0
 51         3         1            3              0

如果bizclass=2是同一种类型的class。由         
         < discriminator
            column = " bizClass "
            type = " string "
         />来表示。