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<h4>集成</h4>
<p>集成snaker必须在classpath下增加snaker.properties，选择性的配置snaker.xml</p>
<p>snaker.properties配置明细:</p>
<table class="table table-bordered">
<tr>
<th>属性名称</th>
<th>描述</th>
<th>默认值</th>
</tr>
<tr>
<td>config</td>
<td>定义snaker.xml文件的名称</td>
<td>snaker.xml</td>
</tr>
<tr>
<td>jdbc.pageSize</td>
<td>查询结果的每页显示数量</td>
<td>15</td>
</tr>
<tr>
<td>jdbc.*</td>
<td>如果指定了JDBC+dbutils方式但未提供DataSource时使用</td>
<td>无</td>
</tr>
<tr>
<td>hibernate.*</td>
<td>如果指定了Hibernate方式但未提供SessionFactory时使用</td>
<td>无</td>
</tr>
<tr>
<td>tx.jta.userTransaction</td>
<td>如果用API集成，并且采用JTA事务时配置</td>
<td>无</td>
</tr>
</table>
<p>snaker.properties一般配置如下:</p>
<pre class="brush: java;">
config=snaker.xml
#page must config
jdbc.pageSize=15
</pre>
<p>snaker.xml用于配置自定义扩展，所配置的bean实例属于单例对象，并且存放在ServiceContext上下文中(SimpleContext、SpringContext)，具体配置如下:</p>
<pre class="brush: xml;">
<config>
<!--jdbc的数据库访问与事务拦截器
<bean class="org.snaker.engine.access.jdbc.JdbcAccess"/>
<bean class="org.snaker.engine.access.transaction.DataSourceTransactionInterceptor"/>
-->
<!--
<bean class="org.snaker.engine.access.transaction.JtaTransactionInterceptor"/>
-->
<!--hibernate3的数据库访问与事务拦截器
<bean class="org.snaker.engine.access.hibernate3.HibernateAccess"/>
<bean class="org.snaker.engine.access.transaction.Hibernate3TransactionInterceptor"/>
-->
<!--mybatis的数据库访问与事务拦截器
<bean class="org.snaker.engine.access.mybatis.MybatisAccess"/>
<bean class="org.snaker.engine.access.transaction.MybatisTransactionInterceptor"/>
-->
<!-- 数据库方言配置。如果使用orm框架已自带了方言的支持，这里不需要配置
<bean class="org.snaker.engine.access.dialect.OracleDialect"/>
<bean class="org.snaker.engine.access.dialect.MySqlDialect"/>
<bean class="org.snaker.engine.access.dialect.SQLServerDialect"/>
-->
<!-- 任务拦截器，这里可配置多个拦截器，在任务执行后进行拦截处理(如：记录日志、短信提醒等) -->
<bean class="org.snaker.engine.impl.LogInterceptor"/>
<!-- 表达式引擎配置 -->
<bean class="org.snaker.engine.impl.JuelExpression"/>
</config>
</pre>
<p>snaker.xml不是必须配置的，视具体应用环境而定。<br>
注：与Spring集成的项目中不需要配置DBAccess、TransactionIntercptor。数据库方言Dialect实现类根据orm框架而定(仅Hibernate框架不需要配置Dialect),
此处配置的拦截器属于全局拦截器，只要产生Task，就会执行拦截处理。
</p>
<h4>1 Spring集成</h4>
<p>Spring集成Snaker时，需要配置流程引擎及服务、事务管理、数据访问方式、缓存管理.具体可参考snaker-web</p>
<pre class="brush: xml;">
<!-- 流程引擎配置 -->
<bean class="org.snaker.engine.spring.SpringSnakerEngine">
<property name="processService" ref="processService"/>
<property name="orderService" ref="orderService"/>
<property name="taskService" ref="taskService"/>
<property name="queryService" ref="queryService"/>
<property name="managerService" ref="managerService"/>
</bean>
<bean id="dbAccess" class="org.snaker.engine.access.hibernate.Hibernate3Access">
<property name="sessionFactory" ref="sessionFactory"/>
</bean>
<bean id="processService" class="org.snaker.engine.core.ProcessService">
<property name="access" ref="dbAccess"/>
<property name="cacheManager" ref="cacheManager"/>
</bean>
<bean id="orderService" class="org.snaker.engine.core.OrderService">
<property name="access" ref="dbAccess"/>
</bean>
<bean id="taskService" class="org.snaker.engine.core.TaskService">
<property name="access" ref="dbAccess"/>
</bean>
<bean id="managerService" class="org.snaker.engine.core.ManagerService">
<property name="access" ref="dbAccess"/>
</bean>
<bean id="queryService" class="org.snaker.engine.core.QueryService">
<property name="access" ref="dbAccess"/>
</bean>
<bean id="cacheManager" class="org.snaker.engine.cache.memory.MemoryCacheManager"/<
<!-- 流程事务配置 aop的pointcut中增加:or execution(* org.snaker.engine..*.*(..))-->
<tx:attributes>
<tx:method name="start*" propagation="REQUIRED"/>
<tx:method name="execute*" propagation="REQUIRED"/>
<tx:method name="save*" propagation="REQUIRED"/>
<tx:method name="delete*" propagation="REQUIRED" />
<tx:method name="update*" propagation="REQUIRED" />
<tx:method name="remove*" propagation="REQUIRED" />
<tx:method name="add*" propagation="REQUIRED" />
<tx:method name="assign*" propagation="REQUIRED" />
<tx:method name="create*" propagation="REQUIRED" />
<tx:method name="complete*" propagation="REQUIRED" />
<tx:method name="finish*" propagation="REQUIRED" />
<tx:method name="terminate*" propagation="REQUIRED" />
<tx:method name="take*" propagation="REQUIRED" />
<tx:method name="deploy*" propagation="REQUIRED" />
<tx:method name="redeploy*" propagation="REQUIRED" />
<tx:method name="undeploy*" propagation="REQUIRED" />
<tx:method name="withdrawTask*" propagation="REQUIRED" />
<tx:method name="native*" propagation="REQUIRED" />
<tx:method name="get*" propagation="REQUIRED" read-only="true" />
<tx:method name="find*" propagation="REQUIRED" read-only="true" />
<tx:method name="query*" propagation="REQUIRED" read-only="true" />
<tx:method name="search*" propagation="REQUIRED" read-only="true" />
<tx:method name="is*" propagation="REQUIRED" read-only="true" />
</tx:attributes>
</pre>
<br>
<h5>1.1 SpringJdbc</h5>
<pre class="brush: xml;">
<bean id="dbAccess" class="org.snaker.engine.access.spring.SpringJdbcAccess">
<property name="dataSource" ref="dataSource"/>
<property name="lobHandler" ref="lobHandler"/>
</bean>
<bean id="lobHandler" class="org.springframework.jdbc.support.lob.DefaultLobHandler" lazy-init="true" />
</pre>
<br>
<h5>1.2 Hibernate</h5>
<p>需要在sessionFactory的bean配置中增加mappingResources属性</p>
<pre class="brush: xml;">
<property name="mappingResources">
<list>
<value>hbm/snaker.task.hbm.xml</value>
<value>hbm/snaker.order.hbm.xml</value>
<value>hbm/snaker.ccorder.hbm.xml</value>
<value>hbm/snaker.process.hbm.xml</value>
<value>hbm/snaker.taskactor.hbm.xml</value>
<value>hbm/snaker.workitem.hbm.xml</value>
<value>hbm/snaker.surrogate.hbm.xml</value>
</list>
</property>
</pre>
<pre class="brush: xml;">
<bean id="dbAccess" class="org.snaker.engine.access.hibernate3.HibernateAccess">
<property name="sessionFactory" ref="sessionFactory"/>
</bean>
</pre>
<br>
<h5>1.3 mybatis</h5>
<pre class="brush: xml;">
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="configLocation" value="classpath:mybatis.cfg.xml"/>
<property name="dataSource" ref="dataSource" />
<property name="typeAliasesPackage" value="org.snaker.engine.entity" />
</bean>
</pre>
<pre class="brush: xml;">
<bean id="dbAccess" class="org.snaker.engine.access.mybatis.MybatisAccess">
<property name="sqlSessionFactory" ref="sqlSessionFactory"/>
</bean>
</pre>
<p>mybatis.cfg.xml配置如下:</p>
<pre class="brush: xml;">
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE configuration PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>
<mappers>
<mapper resource="mapper/process.xml"/>
<mapper resource="mapper/order.xml"/>
<mapper resource="mapper/task.xml"/>
<mapper resource="mapper/task-actor.xml"/>
<mapper resource="mapper/hist-order.xml"/>
<mapper resource="mapper/hist-task.xml"/>
<mapper resource="mapper/hist-task-actor.xml"/>
<mapper resource="mapper/query.xml"/>
<mapper resource="mapper/hist-query.xml"/>
</mappers>
</configuration>
</pre>
<pre class="brush: xml;">
<bean id="dbAccess" class="org.snaker.engine.access.mybatis.MybatisAccess">
<property name="sqlSessionFactory" ref="sqlSessionFactory"/>
</bean>
</pre>
<br>
<h4>2 API集成</h4>
<p>如果使用api集成，需要在snaker.xml中配置DBAccess、Transaction、Dialect</p>
<pre class="brush: java;">
import javax.sql.DataSource;
import org.snaker.engine.SnakerEngine;
import org.snaker.engine.access.jdbc.JdbcHelper;
import org.snaker.engine.cfg.Configuration;
public class SnakerHelper {
private static final SnakerEngine engine;
static {
//使用项目中已有的DataSource、SessionFactory、SqlSessionFactory对象
//传递至initAccessDBObject方法中都可以
DataSource dataSource = JdbcHelper.getDataSource();
engine = new Configuration()
.initAccessDBObject(dataSource)
.buildSnakerEngine();
}
public static SnakerEngine getEngine() {
return engine;
}
}
</pre>
<p>initAccessDBObject方法传递的参数值与snaker.xml配置的数据库访问对应关系：</p>
<table class="table table-bordered">
<tr>
<th>参数类型</th>
<th>访问对象</th>
<th>事务管理拦截器</th>
<th>依赖库</th>
</tr>
<tr>
<td>DataSource</td>
<td>JdbcAccess</td>
<td>DataSourceTransactionInterceptor</td>
<td>commons-dbcp-1.4.jar
<br>commons-dbutils-1.5.jar
<br>commons-pool-1.5.4.jar
</td>
</tr>
<tr>
<td>SessionFactory</td>
<td>HibernateAccess</td>
<td>Hibernate3TransactionInterceptor</td>
<td>hibernate-*-3.5.5.jar</td>
</tr>
<tr>
<td>SqlSessionFactory</td>
<td>MybatisAccess</td>
<td>MybatisTransactionInterceptor</td>
<td>mybatis-3.2.3.jar</td>
</tr>
</table>
<p>initAccessDBObject方法也可以不调用，而使用snaker.properties中的jdbc.*或hibernate.*来初始化DataSource、SessionFactory、SqlSessionFactory。但在实际的项目，还是建议使用该项目已有的访问对象</p>
<br>
<h4>3 Jfinal集成</h4>
<p>在Jfinal平台中集成Snaker，可按照如下步骤操作：</p>
<br>
<h5>3.1 增加maven依赖或jar</h5>
<p>snaker-jfinal的maven坐标为：</p>
<pre class="brush: xml;">
<dependency>
<groupId>com.github.snakerflow</groupId>
<artifactId>snaker-jfinal</artifactId>
<version>2.0.0</version>
</dependency>
</pre>
<p>如果非maven项目，则需要在百度网盘上下载snaker-jfinal-***.jr</p>
<br>
<h5>3.2 配置插件SnakerPlugin</h5>
<pre class="brush: java;">
import org.snaker.jfinal.plugin.SnakerPlugin;
......
/**
* 配置插件
*/
public void configPlugin(Plugins me) {
// 配置C3p0数据库连接池插件
C3p0Plugin c3p0Plugin = new C3p0Plugin(getProperty("jdbcUrl"), getProperty("user"), getProperty("password").trim());
me.add(c3p0Plugin);
// 配置ActiveRecord插件
ActiveRecordPlugin arp = new ActiveRecordPlugin(c3p0Plugin);
me.add(arp);
arp.addMapping("blog", Blog.class); // 映射blog 表到 Blog模型
// 配置Snaker插件
SnakerPlugin snakerPlugin = new SnakerPlugin(c3p0Plugin);
me.add(snakerPlugin);
}
</pre>
<br>
<h5>3.3 配置Jfinal方式的DBAccess、事务拦截器</h5>
<p>在snaker.xml中配置数据库访问类路径：</p>
<pre class="brush: xml;">
<bean class="org.snaker.jfinal.access.JfinalAccess"/>
<bean class="org.snaker.jfinal.access.JfinalTransactionInterceptor"/>
</pre>
<br>
<h5>3.4 使用</h5>
<pre class="brush: java;">
//直接从SnakerPlugin的静态方法getEngine获得引擎实现类，再调用其API进行操作即可
SnakerPlugin.getEngine().startInstanceByName("simple", null, "test", args);
</pre>
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