The following configuration provides a blueprint for
a single Tomcat installation using Spring 2.0, jpa ri
and runtime weaving.
Spring configuration
The following configuration uses runtime weaving, and
a connection pool. It should work on most Tomcat configurations.
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:sa="https://spring-annotation.dev.java.net/context"
xsi:schemaLocation="
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.0.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.0.xsd
http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.0.xsd"
>
<tx:annotation-driven transaction-manager="transactionManager" />
<bean class="org.springframework.orm.jpa.support.PersistenceAnnotationBeanPostProcessor"/>
<bean class="org.springframework.beans.factory.config.CustomScopeConfigurer">
<property name="scopes">
<map>
<entry key="conversation.access">
<bean class="org.apache.myfaces.orchestra.conversation.spring.SpringConversationScope">
<property name="advices">
<list>
<ref bean="persistentContextConversationInterceptor" />
</list>
</property>
</bean>
</entry>
</map>
</property>
</bean>
<bean id="thedataSource" class="org.apache.commons.dbcp.BasicDataSource">
<property name="driverClassName" value="org.h2.Driver" />
<property name="url"
value="jdbc:h2:/DATA/dummydatabase;MODE=MYSQL" />
<property name="username" value="theusername" />
<property name="password" value="thepassword" />
<property name="initialSize">
<value>2</value>
</property>
<property name="maxActive">
<value>100</value>
</property>
<property name="maxIdle">
<value>2</value>
</property>
</bean>
<bean id="entityManagerFactory"
class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
<property name="dataSource" ref="thedataSource" />
<property name="jpaDialect">
<bean class="org.springframework.orm.jpa.vendor.TopLinkJpaDialect" />
</property>
<property name="jpaVendorAdapter">
<bean
class="org.springframework.orm.jpa.vendor.TopLinkJpaVendorAdapter">
<property name="showSql" value="false" />
<property name="generateDdl" value="true" />
<property name="databasePlatform" value="oracle.toplink.essentials.platform.database.MySQL4Platform" />
</bean>
</property>
<property name="jpaProperties">
<props>
<prop key="toplink.logging.level">INFO</prop>
<prop key="toplink.target-database">oracle.toplink.essentials.platform.database.MySQL4Platform</prop>
<prop key="toplink.ddl-generation">create-tables</prop>
<prop key="toplink.cache.type.default">HardWeak</prop>
<prop key="toplink.cache.size.default">5000</prop>
</props>
</property>
<property name="loadTimeWeaver">
<bean
class="org.springframework.instrument.classloading.InstrumentationLoadTimeWeaver" />
</property>
</bean>
<bean id="transactionManager"
class="org.springframework.orm.jpa.JpaTransactionManager">
<property name="entityManagerFactory"
ref="entityManagerFactory" />
</bean>
<bean id="jpaPersistentContextFactory" class="org.apache.myfaces.orchestra.conversation.persistenceContexts.JpaPersistenceContextFactory">
<property name="entityManagerFactory" ref="entityManagerFactory" />
</bean>
<bean id="persistentContextConversationInterceptor" class="org.apache.myfaces.orchestra.conversation.spring.PersistenceContextConversationInterceptor">
<property name="persistenceContextFactory" ref="jpaPersistentContextFactory" />
</bean>
</beans>
This configuration enables load time weaving of the orm classes and thus allows
lazy instantiation of classes. The main issue with this configuration is, that
Tomcat still needs a javaagent passed down as parameter. If this is not done
the loadtime weaving ultimately will fail.
the required javaagent is:
-javaagent:<path to the spring weavers>/weavers/spring-agent.jar
There are weaverless configurations as well, in spring 2.0.2 it was not yet possible to enable
them for jpa and Tomcat. This situation might change soon, please refer to the Spring documentation
for additional information on how to enable the loadtime weaving of jpa classes.
