hibernate 4 and spring 3 configuration issue - spring

I use hibernate 4 with spring 3 and i configure it in xml like this:
<?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:p="http://www.springframework.org/schema/p" xmlns:context="http://www.springframework.org/schema/context"
xmlns:jee="http://www.springframework.org/schema/jee" xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:aop="http://www.springframework.org/schema/aop"
xsi:schemaLocation="
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd
http://www.springframework.org/schema/jee http://www.springframework.org/schema/jee/spring-jee-3.0.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop-3.0.xsd">
<bean id="propertiesConfigurer"
class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
<property name="locations">
<list>
<value>/WEB-INF/conf/jdbc.properties</value>
</list>
</property>
</bean>
<tx:annotation-driven transaction-manager="transactionManager"/>
<context:annotation-config />
<context:component-scan base-package="com.friendsalert"/>
<aop:aspectj-autoproxy/>
<!--
<bean id="log4jInitialization"
class="org.springframework.beans.factory.config.MethodInvokingFactoryBean" >
<property name="targetClass"
value="org.springframework.util.Log4jConfigurer" />
<property name="targetMethod" value="initLogging" />
<property name="arguments">
<list>
<value>/WEB-INF/conf/log4j.xml</value>
this value is bad for production.
<value>10000</value>
</list>
</property>
</bean>
-->
<!-- ========================= RESOURCE DEFINITIONS ========================= -->
<!-- Local Apache Commons DBCP DataSource that refers to a combined database -->
<!-- (see dataAccessContext-jta.xml for an alternative) -->
<!-- The placeholders are resolved from jdbc.properties through -->
<!-- the PropertyPlaceholderConfigurer in applicationContext.xml-->
<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">
<property name="driverClassName" value="${jdbc.driverClassName}"/>
<property name="url" value="${jdbc.url}"/>
<property name="username" value="${jdbc.username}"/>
<property name="password" value="${jdbc.password}"/>
<property name="initialSize" value="${jdbc.initialSize}"/>
<property name="validationQuery" value="${jdbc.validationQuery}"/>
<property name="maxWait" value="${jdbc.maxWait}"/>
<property name="testOnBorrow" value="${jdbc.testOnBorrow}"/>
<property name="testWhileIdle" value="${jdbc.testWhileIdle}"/>
<!-- property name="loginTimeout" value="${jdbc.loginTimeout}"/ -->
</bean>
<!-- Transaction manager for a single JDBC DataSource -->
<!-- (see dataAccessContext-jta.xml for an alternative)
<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource"/>
</bean>
-->
<bean id="transactionManager" class="org.springframework.orm.hibernate4.HibernateTransactionManager">
<property name="sessionFactory" ref="localSessionFactory"/>
</bean>
<bean id="localSessionFactory" class="org.springframework.orm.hibernate4.LocalSessionFactoryBean" depends-on="dataSource">
<property name="dataSource" ref="dataSource"/>
<property name="mappingResources">
<list>
<value>com/friendsalert/model/User.hbm.xml</value>
</list>
</property>
<property name="hibernateProperties">
<props>
<!-- prop key="hibernate.dialect">org.hibernate.dialect.H2Dialect</prop -->
<prop key="hibernate.dialect">org.hibernate.dialect.MySQL5Dialect</prop>
<prop key="hibernate.cache.provider_class">org.hibernate.cache.EhCacheProvider</prop>
<prop key="hibernate.cache.use_second_level_cache">true</prop>
<prop key="hibernate.cache.provider_class">org.hibernate.cache.ehcache.SingletonEhCacheRegionFactory</prop>
<prop key="hibernate.cache.use_query_cache">true</prop>
<!-- cache factory for hibernate 3.3 (surrently we use 3.2)-->
<prop key="hibernate.cache.region.factory_class">org.hibernate.cache.ehcache.EhCacheRegionFactory</prop>
<prop key="hibernate.show_sql">true</prop>
<prop key="hibernate.connection.useUnicode">true</prop>
<prop key="hibernate.connection.charSet">UTF8</prop>
<!-- <prop key="hibernate.current_session_context_class">thread</prop>-->
<prop key="hibernate.connection.aggressive_release">false</prop>
<prop key="hibernate.connection.release_mode">after_transaction</prop>
<prop key="hibernate.connection.autocommit">true</prop>
<!-- create / drop.. use exporter class instead!-->
<prop key="hibernate.hbm2ddl.auto">update</prop>
</props>
</property>
</bean>
<bean id="userDao" class="com.friendsalert.dao.UserDao">
<property name="sessionFactory" ref="localSessionFactory"/>
</bean>
</beans>
and i use dao. When i do a transaction(save, get, update) it works in the first time and in second time i get an error that the transaction is closed.
I use #Transactional annotation in my dao for every function so i can't find out why there is no transaction.
can anybody tell me what i did wrong?
thanks

The unusual things about your configuration are :
<prop key="hibernate.connection.aggressive_release">false</prop>
<prop key="hibernate.connection.release_mode">after_transaction</prop>
<prop key="hibernate.connection.autocommit">true</prop>
I would just try without those lines.
From the reference doc : the autocommit mode is NOT recommended
hibernate.connection.autocommit
Enables autocommit for JDBC pooled connections (it is not recommended).
e.g. true | false
hibernate.connection.release_mode Specifies when Hibernate should release JDBC connections. By default, a JDBC connection is held until the session is explicitly closed or disconnected. For an application server JTA datasource, use after_statement to aggressively release connections after every JDBC call. For a non-JTA connection, it often makes sense to release the connection at the end of each transaction, by using after_transaction. auto will choose after_statement for the JTA and CMT transaction strategies and after_transaction for the JDBC transaction

Related

Excluding Entity from Spring JPA packagesToScan

Is there a way to exclude an Entity in a package using Spring's LocalContainerEntityManagerFactoryBean and Hibernate? I am using spring-data if that matters. I would like to manage the excluded entity with another datasource. I know that you can do it using hibernateSessionFactory (Ignore some classes while scanning PackagesToScan), but I would prefer to use jpa if possible.
Here's my config:
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:jpa="http://www.springframework.org/schema/data/jpa"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.0.xsd
http://www.springframework.org/schema/data/jpa http://www.springframework.org/schema/data/jpa/spring-jpa.xsd ">
<context:property-placeholder location="classpath:app.properties" ignore-unresolvable="true"/>
<bean id="dataSource"
class="org.springframework.jdbc.datasource.DriverManagerDataSource">
<property name="driverClassName" value="${class}" />
<property name="url" value="${url}" />
<property name="username" value="${user}" />
<property name="password" value="${password}" />
</bean>
<bean id="jpaVendorAdapter" class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter">
</bean>
<bean id="entityManagerFactory" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
<property name="dataSource" ref="dataSource"/>
<property name="jpaVendorAdapter" ref="jpaVendorAdapter"/>
<property name="packagesToScan">
<value>com.mypackage.new.entities</value>
</property>
<property name="jpaProperties">
<props>
<prop key="hibernate.hbm2ddl.auto">validate</prop>
<prop key="hibernate.dialect">org.hibernate.dialect.MySQL5InnoDBDialect</prop>
<prop key="hibernate.show_sql">${hibernate.show_sql}</prop>
<prop key="hibernate.format_sql">${hibernate.format_sql}</prop>
<prop key="hibernate.id.new_generator_mappings">true</prop>
<prop key="hibernate.max_fetch_depth">3</prop>
</props>
</property>
</bean>
<!-- Enables the Hibernate #Transactional programming model -->
<tx:annotation-driven transaction-manager="transactionManager" />
<bean id="jpaDialect" class="org.springframework.orm.jpa.vendor.HibernateJpaDialect" />
<bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager">
<property name="entityManagerFactory" ref="entityManagerFactory" />
<property name="dataSource" ref="dataSource" />
<property name="jpaDialect" ref="jpaDialect" />
</bean>
<bean id="persistenceExceptionTranslationPostProcessor" class="org.springframework.dao.annotation.PersistenceExceptionTranslationPostProcessor"/>
</beans>

TransactionRequiredException with WeblogicJtaTransactionManager

I am trying to work with distributed transactions in my application. For this purpose I have configured WeblogicJtaTransactionManager (provided by spring)to manage my distributed transaction. But its seems transactions are not starting. While running update query the get the following exception :
Executing an update/delete query; nested exception is
javax.persistence.TransactionRequiredException: Executing an update/delete query
My application context :
<?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:context="http://www.springframework.org/schema/context"
xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:aop="http://www.springframework.org/schema/aop"
xsi:schemaLocation="http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.2.xsd
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.2.xsd
http://www.jasypt.org/schema/encryption http://www.jasypt.org/schema/encryption/jasypt-spring31-encryption-1.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.2.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.2.xsd">
<!-- <tx:jta-transaction-manager /> -->
<tx:annotation-driven transaction-manager="transactionManager" proxy-target-class="true"/>
<context:component-scan base-package="com.myapp">
<context:exclude-filter type="regex" expression="com.myapp.controllers"/>
</context:component-scan>
<jee:jndi-lookup jndi-name="jdbc/myDataSource" id="dataSource"/>
<bean id="entityManagerFactory" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
<property name="jtaDataSource" ref="dataSource" />
<property name="jpaVendorAdapter">
<bean class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter" />
</property>
<property name="jpaDialect">
<bean class="org.springframework.orm.jpa.vendor.HibernateJpaDialect" />
</property>
<property name="packagesToScan" value="com.myapp.domain" />
<property name="jpaProperties">
<props>
<prop key="javax.persistence.sharedCache.mode">NONE</prop>
<prop key="hibernate.dialect">${app.db.dailect}</prop>
<prop key="initialSize">${app.db.minpoolsize}</prop>
<prop key="maxActive">${app.db.maxpoolsize}</prop>
<prop key="hibernate.show_sql">true</prop>
<prop key="hibernate.max_fetch_depth">0</prop>
<prop key="hibernate.query.substitutions">true=1, false=0</prop>
<prop key="hibernate.generate_statistics">false</prop>
<prop key="javax.persistence.query.timeout">600000</prop>
<prop key="hibernate.transaction.factory_class">org.hibernate.engine.transaction.internal.jta.JtaTransactionFactory</prop>
<prop key="hibernate.transaction.jta.platform">org.hibernate.service.jta.platform.internal.WeblogicJtaPlatform</prop>
</props>
</property>
</bean>
<!-- <bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager">
<property name="entityManagerFactory" ref="entityManagerFactory" />
<property name="jpaDialect">
<bean class="org.springframework.orm.jpa.vendor.HibernateJpaDialect" />
</property>
</bean> -->
<bean id="transactionManager" class="org.springframework.transaction.jta.WebLogicJtaTransactionManager" >
<property name="transactionManagerName" value="javax.transaction.TransactionManager"/>
</bean>
<jpa:repositories base-package="com.myapp.repos" factory-class="com.myapp.repos.BaseRepositoryFactoryBean"
entity-manager-factory-ref="entityManagerFactory"/>
Any help is appreciated.
It is the problem with your datasource. You are using ComboPooledDataSource which is not managed by weblogic.

Changing datasource connection url runtime

I am working on a project which uses spring + hibernate + mysql and c3p0 for connection pooling.
Currently the properties for the connection pool are loaded via properties defined outside the src. (eg: ${db_uname})
Everything starts fine when we create the spring bean.
It might so happen that the database to which we have connected is inaccessible for some reason, and we would like to switch hosts.
Need to implement a call back, where it is supposed to connect to the new host and re-initialize the pool
Any pointers on how to override the existing data source / connection pool gracefully would be of great help.
Here is how my spring config file looks like
<?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:context="http://www.springframework.org/schema/context"
xmlns:util="http://www.springframework.org/schema/util"
xsi:schemaLocation="
http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-3.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.0.xsd
http://www.springframework.org/schema/util
http://www.springframework.org/schema/util/spring-util-3.0.xsd">
<!-- Component scans -->
<import resource="component-scans-1.xml" />
<import resource="component-scans-2.xml" />
<util:properties id="serviceManagerProperties"
location="classpath:servicemanagers.properties" />
<!-- Properties file -->
<context:property-placeholder location="classpath:database.config.properties,classpath:framework.properties" />
<!-- context:annotation-config / -->
<tx:annotation-driven transaction-manager="transactionManager" />
<bean id="dataSource"
class="org.springframework.jdbc.datasource.DriverManagerDataSource">
</bean>
<bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager">
<property name="entityManagerFactory" ref="entityManagerFactory" />
</bean>
<context:mbean-server id="mbeanServer" />
<context:mbean-export server="mbeanServer" default-domain="a.b.c" />
<bean id="cacheManager" factory-method="getInstance"
class="net.sf.ehcache.CacheManager" />
<bean class="net.sf.ehcache.management.ManagementService" init-method="init">
<constructor-arg ref="cacheManager" />
<constructor-arg ref="mbeanServer" />
<constructor-arg value="false" />
<constructor-arg value="false" />
<constructor-arg value="false" />
<constructor-arg value="true" />
</bean>
<bean id="entityManagerFactory"
class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
<property name="dataSource" ref="dataSource" />
<property name="jpaVendorAdapter" ref="jpaAdapter" />
<property name="persistenceXmlLocation" value="classpath*:META-INF/framework-persistence.xml" />
<property name="persistenceUnitName" value="PU-NAME" />
<property name="jpaProperties">
<props>
<prop key="hibernate.format_sql">true</prop>
<prop key="hibernate.dialect">org.hibernate.dialect.MySQLDialect</prop>
<prop key="hibernate.cache.use_query_cache">${hibernate.cache.use_query_cache}</prop>
<prop key="hibernate.cache.use_second_level_cache">${hibernate.cache.use_second_level_cache}</prop>
<prop key="hibernate.cache.region.factory_class">
org.hibernate.cache.ehcache.SingletonEhCacheRegionFactory
</prop>
<prop key="hibernate.ejb.cfgfile">hibernate.cfg.xml</prop>
<prop key="hibernate.generate_statistics">true</prop>
<!-- CONNECTION SETTINGS -->
<prop key="hibernate.connection.driver_class">
com.mysql.jdbc.Driver
</prop>
<prop key="hibernate.connection.url">
jdbc:mysql://${dbhost}/${dbschema}?zeroDateTimeBehavior=convertToNull&useUnicode=true&characterEncoding=UTF-8
</prop>
<prop key="hibernate.connection.username">${dbuser}</prop>
<prop key="hibernate.connection.password">${dbpass}</prop>
<!-- CONNECTION POOLING -->
<prop key="hibernate.connection.provider_class">
org.hibernate.connection.C3P0ConnectionProvider
</prop>
<prop key="hibernate.c3p0.maxPoolSize">${hibernate.c3p0.maxSize}</prop>
<prop key="hibernate.c3p0.minPoolSize">${hibernate.c3p0.minSize}</prop>
<prop key="hibernate.c3p0.acquireIncrement">${hibernate.c3p0.acquireIncrement}</prop>
<prop key="hibernate.c3p0.idleConnectionTestPeriod">${hibernate.c3p0.idleTestPeriod}</prop>
<prop key="hibernate.c3p0.maxStatements">${hibernate.c3p0.maxStatements}</prop>
<prop key="hibernate.c3p0.timeout">${hibernate.c3p0.timeout}</prop>
</props>
</property>
</bean>
<bean id="jpaAdapter"
class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter" />
Assuming the database schema is right, lets say i get the database credentials and the host information in the event, i need to 're-set' the connection pool.
AbstractRoutingDataSource is a good choice.
Xml or annotation used like this:
<bean id="ds1" class="..c3p0.DataSource">
...
</bean>
<bean id="ds2" class="..c3p0.DataSource">
...
</bean>
<bean id="dataSource" class="..xxx.RoutingDataSource">
<property name="targetDataSources">
<map key-type="java.lang.String">
<entry key="ds1" value-ref="ds1"/>
<entry key="ds2" value-ref="ds2"/>
</map>
</property>
<property name="defaultTargetDataSource" ref="ds1"/>
</bean>
<bean id="sessionFactory"
class="org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean">
<property name="dataSource" ref="dataSource" />
...
</bean>
Then build a class to determine current datasoruce.
public class RoutingDataSource extends AbstractRoutingDataSource {
private static final ThreadLocal<String> holder = new ThreadLocal<String>();
protected Object determineCurrentLookupKey()
{
return holder.get();
}
public static void clear(){
holder.remove();
}
public static void setDataSourceKey(String key){
holder.set(key);
}
}
By the way, the 'try-finally' statement is boring!
try{
RoutingDataSource.setDataSourceKey("ds1");
myDao.doXXX();
}finally{
RoutingDataSource.clear();
}
<beans:bean id="dataSource"
class="org.springframework.aop.framework.ProxyFactoryBean">
<beans:property name="targetSource" ref="swappableDataSource" />
</beans:bean>
<beans:bean id="dummyDataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource"
destroy-method="close" />
<beans:bean name="swappableDataSource"
class="org.springframework.aop.target.HotSwappableTargetSource">
<beans:constructor-arg ref="dummyDataSource" />
</beans:bean>
and some where in your code you can do this.
#Autowired
HotSwappableTargetSource swapable;
public void changeDatasource() throws Exception
{
swapable.swap(createNewSource();
}
ComboPooledDataSource createNewSource() throws Exception {
ComboPooledDataSource ds2 = new ComboPooledDataSource();
ds2.setJdbcUrl(url);
ds2.setDriverClass(driver);
ds2.setUser(username);
ds2.setPassword(password);
return ds2;
}
If you are asking for multiple databases connections ..it is possible with hibernate by creating multiple hibernate.cfg.file 's which is some what inappropriate
By following line you can acheive that .
SessionFactory sf = new Configuration().configure("somename.cfg.xml").buildSessionFactory();
When your primary connection not established you have load another hibernate configuration ...otherwise is wont possible .

Spring + Hibernate4 Error CurrentSessionContext is always null

I'm using Hibernate 4 with spring 3.1 in a simple java Apllication.
I use the following code to create the Spring SessionFactory and then convert it into a hibernate SessionFactory:
pls waht is missing here ... Is this the right way to go?? Or do I miss something..? pls help!
.....
......
context=new ClassPathXmlApplicationContext(new String[]{"spring.xml"});
return (SessionFactory) context.getBean("mySessionFactory");
......
The CurrentSessionContext ofthe sessionfactory is always null!
So I cant execute
sessionFactory.getcurrentSession()
-> gives me an java.lang.NullPointer Exception
myBean Declarations in spring.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"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.1.xsd">
<bean id="myDataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">
<property name="driverClassName" value="com.mysql.jdbc.Driver"/>
<property name="url" value="jdbc:mysql://localhost:3306/test"/>
<property name="username" value="root"/>
<property name="password" value=""/>
</bean>
<bean id="mySessionFactory" name="mySessionFactory" class="org.springframework.orm.hibernate4.LocalSessionFactoryBean" scope="singleton">
<property name="dataSource" ref="myDataSource"/>
<property name="mappingResources">
<list>
<value>TblUrls.hbm.xml</value>
</list>
</property>
<property name="hibernateProperties">
<props>
<prop key="hibernate.dialect">org.hibernate.dialect.MySQLDialect</prop>
<prop key="hibernate.show_sql">true</prop>
<prop key="hibernate.hbm2ddl.auto">update</prop>
<prop key="hibernate.show_sql">true</prop>
<prop key="hibernate.transaction.jta.platform">org.hibernate.service.jta.platform.internal.SunOneJtaPlatform</prop>
<prop key="hibernate.current_session_context_class">org.springframework.orm.hibernate4.SpringSessionContext</prop>
</props>
</property>
</bean>
<bean class="org.springframework.orm.hibernate4.support.OpenSessionInViewInterceptor">
<property name="sessionFactory">
<ref local="mySessionFactory" />
</property>
</bean>
<bean id = "transactionManager" class = "org.springframework.orm.hibernate4.HibernateTransactionManager">
<property name = "sessionFactory" ref = "mySessionFactory" />
</bean>
<!-- <bean id="myProductDao" class="hib.TblUrlsHome"> -->
<!-- <property name="sessionFactory" ref="mySessionFactory"/> -->
<!-- </bean> -->
</beans>
You have to do
sessionFactory.openSession();
This should solve your problem.

spring jpa hibernate with more datasources

I have to use two different database in my application(spring) with Hibernate,Jpa.
I'd like to define the different table directly to the different data sources.
So I use two different persistence unit and I try to use
<property name="packagesToScan" value="it.two.app.domain.first" />
and
<property name="packagesToScan" value="it.two.app.domain.second" />
putting the different tables into the different packages.
but It doesn't work.
Infact all the table is with the first data source.
then I tried to write into the perstistence XML file the name of the class
like
<persistence-unit name="persistenceFirst" transaction-type="RESOURCE_LOCAL">
<class>it.two.app.domain.first.OneTable</class>
<exclude-unlisted-classes/>
</persistence-unit>
and
it.two.app.domain.second.OtherTable
But when I run Log says
Table 'firstDB.other-table' doesn't exist
and I use into the services file
#PersistenceContext(unitName ="persistenceFirst")
private EntityManager em;
and
#PersistenceContext(unitName = "persistenceSecond")
EntityManager em;
Have you got some Ideas?
Thi is the data sources XML file
<?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:context="http://www.springframework.org/schema/context"
xmlns:jdbc="http://www.springframework.org/schema/jdbc"
xmlns:jpa="http://www.springframework.org/schema/data/jpa"
xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:p="http://www.springframework.org/schema/p"
xsi:schemaLocation="http://www.springframework.org/schema/jdbc http://www.springframework.org/schema/jdbc/spring-jdbc-3.1.xsd
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.1.xsd
http://www.springframework.org/schema/data/jpa http://www.springframework.org/schema/data/jpa/spring-jpa-1.0.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.1.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.1.xsd">
<!-- first datasource -->
<context:property-placeholder location="classpath:jdbc-first.properties"/>
<bean id="dataSourceFirst" class="org.apache.commons.dbcp.BasicDataSource"
p:driverClassName="${jdbc.driverClassName}" p:url="${jdbc.databaseurl}"
p:username="${jdbc.username}" p:password="${jdbc.password}" />
<!-- second datasource -->
<context:property-placeholder location="classpath:jdbc-second.properties"/>
<bean id="dataSourceSecond" class="org.apache.commons.dbcp.BasicDataSource"
p:driverClassName="${jdbc.driverClassName}" p:url="${jdbc.databaseurl}"
p:username="${jdbc.username}" p:password="${jdbc.password}" />
<bean id="transactionManagerFirst" class="org.springframework.orm.jpa.JpaTransactionManager"
p:entityManagerFactory-ref="emfFirst"/>
<bean id="transactionManagerSecond" class="org.springframework.orm.jpa.JpaTransactionManager"
p:entityManagerFactory-ref="emfSecond"/>
<tx:annotation-driven transaction-manager="transactionManagerFirst"/>
<tx:annotation-driven transaction-manager="transactionManagerSecond"/>
<jpa:repositories base-package="it.two.app.repository.first"
entity-manager-factory-ref="emfFirst" transaction-manager-ref="transactionManagerFirst" />
<jpa:repositories base-package="it.two.app.repository.second"
entity-manager-factory-ref="emfSecond" transaction-manager-ref="transactionManagerSecond" />
<bean id="emfFirst"
class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
<property name="persistenceUnitName" value="persistenceFirst"/>
<property name="persistenceXmlLocation" value="classpath:/META-INF/persistence-first.xml"/>
<property name="jpaVendorAdapter">
<bean class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter" />
</property>
<property name="dataSource" ref="dataSourceFirst" />
<property name="packagesToScan" value="it.two.app.domain.first" />
<property name="jpaProperties">
<props>
<prop key="hibernate.dialect">org.hibernate.dialect.MySQLDialect</prop>
<prop key="hibernate.max_fetch_depth">3</prop>
<prop key="hibernate.jdbc.fetch_size">50</prop>
<prop key="hibernate.jdbc.batch_size">10</prop>
</props>
</property>
</bean>
<bean id="emfSecond" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
<property name="persistenceUnitName" value="persistenceSecond"/>
<property name="persistenceXmlLocation" value="classpath:/META-INF/persistence- second.xml"/>
<property name="jpaVendorAdapter" >
<bean class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter"/>
</property>
<property name="dataSource" ref="dataSourceSecond"/>
<property name="packagesToScan" value="it.two.app.domain.second"/>
<property name="jpaProperties">
<props>
<prop key="hibernate.dialect">org.hibernate.dialect.MySQLDialect</prop>
<prop key="hibernate.max_fetch_depth">3</prop>
<prop key="hibernate.jdbc.fetch_size">50</prop>
<prop key="hibernate.jdbc.batch_size">10</prop>
</props>
</property>
</bean>
</beans>
SOLUTION!!!!!!
I undestand the problem.
Simply
<!-- first datasource -->
<bean id="dataSourceFirst" class="org.apache.commons.dbcp.BasicDataSource"
p:driverClassName="com.mysql.jdbc.Driver" p:url="url...."
p:username="username" p:password="password" />
<!-- second datasource -->
<bean id="dataSourceSecond" class="org.apache.commons.dbcp.BasicDataSource"
p:driverClassName="com.mysql.jdbc.Driver" p:url="url2...."
p:username="username2" p:password="password2" />
If you would like to use multiple DataSource in Spring + JPA.
Create two or more PersistenceUnit in persistence.xml.
Create EntityManagerFactory for each PersistenceUnit in spring-beans.xml.
More Reference.
Multiple database with Spring+Hibernate+JPA
Access Multiple Database Using Spring 3, Hibernate 3
Multiple Database using Spring 3.0 and Hibernate 3.0
In your DAO classes.
#PersistenceContext(unitName ="JPA_1")
private EntityManager em_1;
#PersistenceContext(unitName ="JPA_2")
private EntityManager em_2;
Conig persistence.xml
<persistence-unit name="JPA_1" type="RESOURCE_LOCAL">
....
</persistence-unit>
<persistence-unit name="JPA_2" type="RESOURCE_LOCAL">
....
</persistence-unit>
Config : spring-beans.xml
<bean id="entityManagerFactory1" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
<property name="persistenceUnitName" value="JPA_1"/>
<property name="jpaVendorAdapter" ref="jpaVendorAdapter"/>
<property name="jpaDialect">
<bean class="org.springframework.orm.jpa.vendor.EclipseLinkJpaDialect"/> <--if it is necessary, replace with hibernate.
</property>
<property name="jpaPropertyMap">
<props>
<prop key="eclipselink.weaving">false</prop> <--if it is necessary, replace with hibernate.
</props>
</property>
<property name="loadTimeWeaver">
<bean class="org.springframework.instrument.classloading.InstrumentationLoadTimeWeaver">
</bean>
</property>
</bean>
<bean id="entityManagerFactory2" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
<property name="persistenceUnitName" value="JPA_2"/>
<property name="jpaVendorAdapter" ref="jpaVendorAdapter"/>
<property name="jpaDialect">
<bean class="org.springframework.orm.jpa.vendor.EclipseLinkJpaDialect"/> <--if it is necessary, replace with hibernate.
</property>
<property name="jpaPropertyMap">
<props>
<prop key="eclipselink.weaving">false</prop> <--if it is necessary, replace with hibernate.
</props>
</property>
<property name="loadTimeWeaver">
<bean class="org.springframework.instrument.classloading.InstrumentationLoadTimeWeaver">
</bean>
</property>
</bean>
<bean id="jpaVendorAdapter" class="org.springframework.orm.jpa.vendor.EclipseLinkJpaVendorAdapter"> <--if it is necessary, replace with hibernate.
<property name="databasePlatform" value="org.eclipse.persistence.platform.database.MySQLPlatform"/>
<!--<property name="databasePlatform" value="org.eclipse.persistence.platform.database.OraclePlatform" />-->
<property name="generateDdl" value="false"/>
<property name="showSql" value="true"/>
</bean>

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