学步园

原文: http://www.blogjava.net/pdw2009/archive/2006/04/11/40475.html
1 新建一个名为oswf的Web Projcet 项目,并添加项目的  struts capabilities,并把osworkflow所需要jar文件拷贝到lib目录下.

2 在tomcat的servers.xml文件中配置一个项目连接到我们所在的myeclipse工作区中所建立的oswf项目下的WebRoot目录下.在servers.xml中添加如下代码:

<Context path="/oswf" docBase="D:/peidw/workplace/osworkflow/WebRoot" debug="5" reloadable="true" crossContext="true">
        <Resource name="jdbc/oswf" auth="Container" type="javax.sql.DataSource"/>
          <ResourceParams name="jdbc/oswf">
          <parameter>
            <name>factory</name>
            <value>org.apache.commons.dbcp.BasicDataSourceFactory</value>
          </parameter>
          <parameter>
            <name>driverClassName</name>
            <value>com.mysql.jdbc.Driver</value>
          </parameter>
          <parameter>
            <name>url</name>
            <value>jdbc:mysql://localhost:3306/osworkflow</value>
          </parameter>
          <parameter>
            <name>username</name>
            <value>root</value>
          </parameter>
          <parameter>
            <name>password</name>
            <value></value>
          </parameter>
          <parameter>
            <name>maxActive</name>
            <value>20</value>
          </parameter>
          <parameter>
            <name>maxIdle</name>
            <value>2</value>
          </parameter>
          <parameter>
            <name>maxWait</name>
            <value>-1</value>
          </parameter>
          <parameter>
            <name>removeAbandoned</name>
            <value>true</value>
          </parameter>
          <parameter>
            <name>removeAbandonedTimeout</name>
            <value>300</value>
          </parameter>
        </ResourceParams>
        </Context>

3  在src目录需要建立三个文件来配置OSWorkflow的相关配置.首先是osworkflow.xml文件,至于文件的作用一看就明白,内容如下:
       <?xml version="1.0" encoding="UTF-8"?>
<osworkflow>
 <persistence class="com.opensymphony.workflow.spi.jdbc.JDBCWorkflowStore">
     <property key="datasource" value="jdbc/oswf"/>
    
     <property key="entry.sequence" value="select max(id)+1 from os_wfentry"/>
     <property key="entry.id" value="id"/>
     <property key="entry.name" value="name" />
     <property key="entry.state" value="state"/>
    
     <property key="step.sequence" value="select max(id)+1 from os_stepids"/>
     <property key="step.sequence.increment" value="insert into os_stepids(id) values(null) "/>
     <property key="step.sequence.retrieve" value="select max(id) from os_stepids"/>
    
     <property key="history.table" value="os_historystep"/>
     <property key="current.table" value="os_currentstep"/>
     <property key="histroyPrev.table" value="os_historystep_prev"/>
     <property key="currentPrev.table" value="os_currentstep_prev"/>
    
     <property key="step.id" value="ID"/>
        <property key="step.entryId" value="ENTRY_ID"/>
        <property key="step.stepId" value="STEP_ID"/>
        <property key="step.actionId" value="ACTION_ID"/>
        <property key="step.owner" value="OWNER"/>
        <property key="step.caller" value="CALLER"/>
        <property key="step.startDate" value="START_DATE"/>
        <property key="step.finishDate" value="FINISH_DATE"/>
        <property key="step.dueDate" value="DUE_DATE"/>
        <property key="step.status" value="STATUS"/>
        <property key="step.previousId" value="PREVIOUS_ID"/>
    
 </persistence>
 
 <factory class="com.opensymphony.workflow.loader.JDBCWorkflowFactory">
  <property key="resource" value="workflows.xml"/>
 </factory>
</osworkflow>
在src目录下新建一个propertyset.xml来存储相应的字段配置信息:

  <?xml version="1.0" encoding="UTF-8"?>
<propertysets>
    <propertyset name="jdbc"
      class="com.opensymphony.module.propertyset.database.JDBCPropertySet">
        <arg name="datasource" value="jdbc/oswf"/>
        <arg name="table.name" value="OS_PROPERTYENTRY"/>
        <arg name="col.globalKey" value="GLOBAL_KEY"/>
        <arg name="col.itemKey" value="ITEM_KEY"/>
        <arg name="col.itemType" value="ITEM_TYPE"/>
        <arg name="col.string" value="STRING_VALUE"/>
        <arg name="col.date" value="DATE_VALUE"/>
        <arg name="col.data" value="DATA_VALUE"/>
        <arg name="col.float" value="FLOAT_VALUE"/>
        <arg name="col.number" value="NUMBER_VALUE"/>
    </propertyset>
</propertysets>
还要新建一个流程的配置文件,该文件的命名与osworkflow.xml的factory节点里的值有关,如:

<?xml version="1.0" encoding="UTF-8"?>
<workflows>
  <workflow name="leave" type="resource" location="leave.xml"/>
</workflows>

那么leave.xml就是一个工作流的真正配置文件。其内容如下：

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE workflow PUBLIC "-//OpenSymphony Group//DTD OSWorkflow 2.7//EN" 
"http://www.opensymphony.com/osworkflow/workflow_2_7.dtd">
<workflow>
  <initial-actions>
   <action id="0" name="開始">
      <results>
        <unconditional-result old-status="Finished" status="Queued" step="1" />
      </results>
    </action>
  </initial-actions>

  <steps>
    <step id="1" name="填假單">
      <actions>
        <action id="1" name="送出">
	  <pre-functions>
	    <function type="class">
	      <arg name="class.name">com.opensymphony.workflow.util.Caller</arg>
	    </function>
	  </pre-functions>
          <results>
            <unconditional-result old-status="Finished" status="Queued" 
step="2"  owner="User100" />
          </results>
        </action>
      </actions>
    </step>

    <step id="2" name="批假單">
      <actions>
        <action id="2" name="准許">
	  <pre-functions>
	    <function type="class">
	      <arg name="class.name">com.opensymphony.workflow.util.Caller</arg>
	    </function>
	  </pre-functions>
          <results>
            <unconditional-result old-status="Finished" status="Queued" 
step="3"  owner="${caller}"/>
          </results>
        </action>

        <action id="3" name="駁回">
	  <pre-functions>
	    <function type="class">
	      <arg name="class.name">com.opensymphony.workflow.util.Caller</arg>
	    </function>
	  </pre-functions>
          <results>
            <unconditional-result old-status="Finished" status="Queued" 
step="1"  owner="${caller}"/>
          </results>
        </action>
      </actions>      
    </step>

    <step id="3" name="停止" />
  </steps>
</workflow>

这样就可以配置OSworkflow持久化进mysql中.