Activiti和Spring集成

ProcessEngineFactoryBean

能夠把ProcessEngine配置爲Spring的一個bean。 和Spring集成的起點就是org.activiti.spring.ProcessEngineFactoryBean。具體配置相似下面這樣：

<bean id="processEngineConfiguration" class="org.activiti.spring.SpringProcessEngineConfiguration">
    ...
</bean>

<bean id="processEngine" class="org.activiti.spring.ProcessEngineFactoryBean">
  <property name="processEngineConfiguration" ref="processEngineConfiguration" />
</bean>

Transactions

這一章節會講到dataSource，transactionManager，processEngine，以及Activiti Engine services四部分

先看一下配置文件SpringTransactionIntegrationTest-context.xml

<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:context="http://www.springframework.org/schema/context"
       xmlns:tx="http://www.springframework.org/schema/tx"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xsi:schemaLocation="http://www.springframework.org/schema/beans   http://www.springframework.org/schema/beans/spring-beans.xsd
                           http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-2.5.xsd
                           http://www.springframework.org/schema/tx      http://www.springframework.org/schema/tx/spring-tx-3.0.xsd">

  <bean id="dataSource" class="org.springframework.jdbc.datasource.SimpleDriverDataSource">
    <property name="driverClass" value="org.h2.Driver" />
    <property name="url" value="jdbc:h2:mem:activiti;DB_CLOSE_DELAY=1000" />
    <property name="username" value="sa" />
    <property name="password" value="" />
  </bean>

  <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
    <property name="dataSource" ref="dataSource" />
  </bean>

  <bean id="processEngineConfiguration" class="org.activiti.spring.SpringProcessEngineConfiguration">
    <property name="dataSource" ref="dataSource" />
    <property name="transactionManager" ref="transactionManager" />
    <property name="databaseSchemaUpdate" value="true" />
    <property name="asyncExecutorActivate" value="false" />
  </bean>

  <bean id="processEngine" class="org.activiti.spring.ProcessEngineFactoryBean">
    <property name="processEngineConfiguration" ref="processEngineConfiguration" />
  </bean>

  <bean id="repositoryService" factory-bean="processEngine" factory-method="getRepositoryService" />
  <bean id="runtimeService" factory-bean="processEngine" factory-method="getRuntimeService" />
  <bean id="taskService" factory-bean="processEngine" factory-method="getTaskService" />
  <bean id="historyService" factory-bean="processEngine" factory-method="getHistoryService" />
  <bean id="managementService" factory-bean="processEngine" factory-method="getManagementService" />

...

Expressions

Automatic resource deployment 自動部署

在process engine配置中，能夠指定資源集合，當流程引擎建立時，全部的資源文件會被掃描、部署。這樣作的好處是能夠防止重複部署。只有當資源文件改變時，纔會向Activiti DB中添加新的部署信息。

example：

這裏輸入代碼