I'm trying to configure Spring+Hibernate+JPA for work with two databases (MySQL and MSSQL).
My datasource-context.xml:
<?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:aop="http://www.springframework.org/schema/aop"
xsi:schemaLocation="http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.5.xsd
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.5.xsd
http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-2.5.xsd"
xmlns:p="http://www.springframework.org/schema/p" xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:util="http://www.springframework.org/schema/util">
<!--
Data Source config
-->
<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource"
destroy-method="close" p:driverClassName="${local.jdbc.driver}" p:url="${local.jdbc.url}"
p:username="${local.jdbc.username}" p:password="${local.jdbc.password}">
</bean>
<bean id="dataSourceRemote" class="org.apache.commons.dbcp.BasicDataSource"
destroy-method="close" p:driverClassName="${remote.jdbc.driver}"
p:url="${remote.jdbc.url}" p:username="${remote.jdbc.username}"
p:password="${remote.jdbc.password}" />
<bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager"
p:entity-manager-factory-ref="entityManagerFactory" />
<!--
JPA config
-->
<tx:annotation-driven transaction-manager="transactionManager" />
<bean id="persistenceUnitManager"
class="org.springframework.orm.jpa.persistenceunit.DefaultPersistenceUnitManager">
<property name="persistenceXmlLocations">
<list value-type="java.lang.String">
<value>classpath*:config/persistence.local.xml</value>
<value>classpath*:config/persistence.remote.xml</value>
</list>
</property>
<property name="dataSources">
<map>
<entry key="localDataSource" value-ref="dataSource" />
<entry key="remoteDataSource" value-ref="dataSourceRemote" />
</map>
</property>
<property name="defaultDataSource" ref="dataSource" />
</bean>
<bean id="entityManagerFactory"
class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
<property name="jpaVendorAdapter">
<bean class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter"
p:showSql="true" p:generateDdl="true">
</bean>
</property>
<property name="persistenceUnitManager" ref="persistenceUnitManager" />
<property name="persistenceUnitName" value="localjpa"/>
</bean>
<bean
class="org.springframework.orm.jpa.support.PersistenceAnnotationBeanPostProcessor" />
</beans>
Each persistence.xml contains one unit, like this:
<persistence-unit name="remote" transaction-type="RESOURCE_LOCAL">
<properties>
<property name="hibernate.ejb.naming_strategy" value="org.hibernate.cfg.DefaultNamingStrategy" />
<property name="hibernate.dialect" value="${remote.hibernate.dialect}" />
<property name="hibernate.hbm2ddl.auto" value="${remote.hibernate.hbm2ddl.auto}" />
</properties>
</persistence-unit>
PersistenceUnitManager cause following exception:
Cannot resolve reference to bean 'persistenceUnitManager' while setting bean property 'persistenceUnitManager'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'persistenceUnitManager' defined in class path resource [config/datasource-context.xml]: Initialization of bean failed; nested exception is org.springframework.beans.TypeMismatchException: Failed to convert property value of type [java.util.ArrayList] to required type [java.lang.String] for property 'persistenceXmlLocation'; nested exception is java.lang.IllegalArgumentException: Cannot convert value of type [java.util.ArrayList] to required type [java.lang.String] for property 'persistenceXmlLocation': no matching editors or conversion strategy found
If left only one persistence.xml without list, every works fine but I need 2 units...
I also try to find alternative solution for work with two databases in Spring+Hibernate context, so I would appreciate any solution.
New error after changing to persistenceXmlLocations
:
No single default persistence unit defined in {classpath:config/persistence.local.xml, classpath:config/persistence.remote.xml}
Update:
I add persistenceUnitName, it works, but only with one unit, still need help.
Update:
I changed config files: datasource-context.xml
<?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:aop="http://www.springframework.org/schema/aop"
xsi:schemaLocation="http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.5.xsd
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.5.xsd
http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-2.5.xsd"
xmlns:p="http://www.springframework.org/schema/p" xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:util="http://www.springframework.org/schema/util">
<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource"
destroy-method="close" p:driverClassName="${local.jdbc.driver}" p:url="${local.jdbc.url}"
p:username="${local.jdbc.username}" p:password="${local.jdbc.password}">
</bean>
<bean id="dataSourceRemote" class="org.apache.commons.dbcp.BasicDataSource"
destroy-method="close" p:driverClassName="${remote.jdbc.driver}"
p:url="${remote.jdbc.url}" p:username="${remote.jdbc.username}"
p:password="${remote.jdbc.password}">
</bean>
<bean
class="org.springframework.orm.jpa.support.PersistenceAnnotationBeanPostProcessor">
<property name="defaultPersistenceUnitName" value="pu1" />
</bean>
<bean id="persistenceUnitManager"
class="org.springframework.orm.jpa.persistenceunit.DefaultPersistenceUnitManager">
<property name="persistenceXmlLocation" value="${persistence.xml.location}" />
<property name="defaultDataSource" ref="dataSource" /> <!-- problem -->
<property name="dataSources">
<map>
<entry key="local" value-ref="dataSource" />
<entry key="remote" value-ref="dataSourceRemote" />
</map>
</property>
</bean>
<bean id="entityManagerFactory"
class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
<property name="jpaVendorAdapter">
<bean class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter"
p:showSql="true" p:generateDdl="true">
</bean>
</property>
<property name="persistenceUnitManager" ref="persistenceUnitManager" />
<property name="persistenceUnitName" value="pu1" />
<property name="dataSource" ref="dataSource" />
</bean>
<bean id="entityManagerFactoryRemote"
class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
<property name="jpaVendorAdapter">
<bean class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter"
p:showSql="true" p:generateDdl="true">
</bean>
</property>
<property name="persistenceUnitManager" ref="persistenceUnitManager" />
<property name="persistenceUnitName" value="pu2" />
<property name="dataSource" ref="dataSourceRemote" />
</bean>
<tx:annotation-driven />
<bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager"
p:entity-manager-factory-ref="entityManagerFactory" />
<bean id="transactionManagerRemote" class="org.springframework.orm.jpa.JpaTransactionManager"
p:entity-manager-factory-ref="entityManagerFactoryRemote" />
</beans>
persistence.xml
<?xml version="1.0" encoding="UTF-8"?>
<persistence xmlns="http://java.sun.com/xml/ns/persistence"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/persistence
http://java.sun.com/xml/ns/persistence/persistence_1_0.xsd"
version="1.0">
<persistence-unit name="pu1" transaction-type="RESOURCE_LOCAL">
<properties>
<property name="hibernate.ejb.naming_strategy" value="org.hibernate.cfg.DefaultNamingStrategy" />
<property name="hibernate.dialect" value="${local.hibernate.dialect}" />
<property name="hibernate.hbm2ddl.auto" value="${local.hibernate.hbm2ddl.auto}" />
</properties>
</persistence-unit>
<persistence-unit name="pu2" transaction-type="RESOURCE_LOCAL">
<properties>
<property name="hibernate.ejb.naming_strategy" value="org.hibernate.cfg.DefaultNamingStrategy" />
<property name="hibernate.dialect" value="${remote.hibernate.dialect}" />
<property name="hibernate.hbm2ddl.auto" value="${remote.hibernate.hbm2ddl.auto}" />
</properties>
</persistence-unit>
</persistence>
Now it builds two entityManagerFactory, but both are for Microsoft SQL Server
[main] INFO org.hibernate.ejb.Ejb3Configuration - Processing PersistenceUnitInfo [
name: pu1
...]
[main] INFO org.hibernate.cfg.SettingsFactory - RDBMS: Microsoft SQL Server
[main] INFO org.hibernate.ejb.Ejb3Configuration - Processing PersistenceUnitInfo [
name: pu2
...]
[main] INFO org.hibernate.cfg.SettingsFactory - RDBMS: Microsoft SQL Server (but must MySQL)
I suggest, that use only dataSource, dataSourceRemote (no substitution) is not worked. That's my last problem.
You need to use
persistenceXmlLocations
property (note the plural) rather thanpersistenceXmlLocation
. It's a string array, so it'll be auto-converted from list:Update (based on edit)
Your
entityManagerFactory
does not specifypersistenceUnitName
property. You have to do so explicitly because you're defining more than one persistence unit andentityManagerFactory
has to know which one to use.