실습문서 Cugain의 샘플프로젝트 jpetstore 분석기 - (4) dataAccessContext-jta.xml 분석

<?xml version="1.0" encoding="UTF-8"?>
<!--
  - Application context definition for JPetStore's data access layer.
  - Accessed by business layer objects defined in "applicationContext.xml"
  - (see web.xml's "contextConfigLocation").
  -
  - This version of the data access layer works on two databases (main/order),
  - using JNDI DataSources with JtaTransactionManager. It obviously depends on
  - JTA support in the container, and on pre-configured container DataSources.
 

  -
  - This version also uses the "jndi:" namespace introduced in Spring 2.0
  - to configured JNDI referenced objects.
  -->
<beans xmlns="http://www.springframework.org/schema/beans"
      xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
      xmlns:jee="http://www.springframework.org/schema/jee"
      xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.0.xsd
           http://www.springframework.org/schema/jee http://www.springframework.org/schema/jee/spring-jee-2.0.xsd">
 <!-- ========================= RESOURCE DEFINITIONS ========================= -->
 <!-- Main JNDI DataSource for J2EE environments -->
 <!-- Refers to the main database, containing product and account data -->
 <!-- (see dataAccessContext-local.xml for an alternative) -->
    <jee:jndi-lookup id="dataSource" jndi-name="java:comp/env/jdbc/jpetstore"/>   

 <!-- Additional JNDI DataSource for J2EE environments -->
 <!-- Refers to the order database, containing order data -->
 <!-- (see dataAccessContext-local.xml for an alternative) -->
    <jee:jndi-lookup id="orderDataSource" jndi-name="java:comp/env/jdbc/jpetstore-order"/> 

 <!-- Transaction manager that delegates to JTA (for a transactional JNDI DataSource) -->
 <!-- Necessary here due to the need for distributed transactions across two databases -->
 <!-- (see dataAccessContext-local.xml for an alternative) -->
 <bean id="transactionManager" class="org.springframework.transaction.jta.JtaTransactionManager"/> 

 <!-- SqlMap setup for iBATIS Database Layer -->
 <bean id="sqlMapClient" class="org.springframework.orm.ibatis.SqlMapClientFactoryBean">
  <property name="configLocation" value="WEB-INF/sql-map-config.xml"/>
 </bean> 

 <!-- ========================= DAO DEFINITIONS: IBATIS IMPLEMENTATIONS ========================= --> 

 <bean id="accountDao" class="org.springframework.samples.jpetstore.dao.ibatis.SqlMapAccountDao">
  <property name="dataSource" ref="dataSource"/>
  <property name="sqlMapClient" ref="sqlMapClient"/>
 </bean>
 <bean id="categoryDao" class="org.springframework.samples.jpetstore.dao.ibatis.SqlMapCategoryDao">
  <property name="dataSource" ref="dataSource"/>
  <property name="sqlMapClient" ref="sqlMapClient"/>
 </bean>
 <bean id="productDao" class="org.springframework.samples.jpetstore.dao.ibatis.SqlMapProductDao">
  <property name="dataSource" ref="dataSource"/>
  <property name="sqlMapClient" ref="sqlMapClient"/>
 </bean>
 <bean id="itemDao" class="org.springframework.samples.jpetstore.dao.ibatis.SqlMapItemDao">
  <property name="dataSource" ref="dataSource"/>
  <property name="sqlMapClient" ref="sqlMapClient"/>
 </bean>
 <!-- Refers to the order database here -->
 <!-- (see dataAccessContext-local.xml for an alternative) -->
 <bean id="orderDao" class="org.springframework.samples.jpetstore.dao.ibatis.SqlMapOrderDao">
  <property name="dataSource" ref="orderDataSource"/>
  <property name="sqlMapClient" ref="sqlMapClient"/>
  <property name="sequenceDao" ref="sequenceDao"/>
 </bean> 

 <!-- OrderDao definition for MS SQL Server -->
 <!-- (to be used instead of the default orderDao) -->
 <!--
 <bean id="orderDao" class="org.springframework.samples.jpetstore.dao.ibatis.MsSqlOrderDao">
  <property name="dataSource" ref="orderDataSource"/>
  <property name="sqlMapClient" ref="sqlMapClient"/>
  <property name="sequenceDao" ref="sequenceDao"/>
 </bean>
 -->
 <!-- Refers to the order database here -->
 <!-- (see dataAccessContext-local.xml for an alternative) -->
 <bean id="sequenceDao" class="org.springframework.samples.jpetstore.dao.ibatis.SqlMapSequenceDao">
  <property name="dataSource" ref="orderDataSource"/>
  <property name="sqlMapClient" ref="sqlMapClient"/>
 </bean> 

 <!-- SequenceDao definition for Oracle databases -->
 <!-- (to be used instead of the default sequenceDao) -->
 <!--
 <bean id="sequenceDao" class="org.springframework.samples.jpetstore.dao.ibatis.OracleSequenceDao">
  <property name="dataSource" ref="orderDataSource"/>
  <property name="sqlMapClient" ref="sqlMapClient"/>
 </bean>
 -->
</beans>