Is it possible to use executeUpdate for createNativeQuery on openjpa slice?
We tried something like this but that doesn’t update any record. We are using
MySQL database. Log shows that updates go to both slices and are immediately rollbacked. Everything works fine without slice.
String updateQueryString = "update address set name = ?1 ";
Query query = JPA.em().createNativeQuery(updateQueryString)
.setHint("openjpa.hint.slice.Target", “One”)
.setParameter(1, "adr1");
query.executeUpdate();
Our persistence.xml file:
<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_2_0.xsd" version="2.0">
<persistence-unit name="slice">
<provider>
org.apache.openjpa.persistence.PersistenceProviderImpl
</provider>
<class>controllers.Address</class>
<class>controllers.User</class>
<class>models.Account</class>
<class>controllers.CostCenter</class>
<properties>
<property name="openjpa.BrokerFactory" value="slice"/>
<property name="openjpa.slice.Names" value="One, Two"/>
<property name="openjpa.slice.Master" value="One"/>
<property name="openjpa.ConnectionUserName" value="*****"/>
<property name="openjpa.ConnectionPassword" value="******"/>
<property name="openjpa.ConnectionDriverName"
value="org.apache.openjpa.slice.jdbc"/>
<property name="openjpa.slice.DistributionPolicy"
value="sharding.RublysDistributionPolicy"/>
<property name="openjpa.slice.QueryTargetPolicy "
value="sharding.RublysQueryTargetPolicy"/>
<property name="openjpa.slice.FinderTargetPolicy"
value="sharding.RublysTargetPolicy" />
<property name="openjpa.slice.ReplicatedTypes"
value="models.Account,controllers.CostCenter"/>
<property name="openjpa.slice.One.ConnectionURL"
value="jdbc:mysql://localhost:3306/slice1"/>
<property name="openjpa.slice.One.ConnectionDriverName"
value="com.mysql.jdbc.Driver"/>
<property name="openjpa.slice.Two.ConnectionURL"
value="jdbc:mysql://localhost:3306/asrtest2"/>
<property name="openjpa.slice.Two.ConnectionDriverName"
value="com.mysql.jdbc.Driver"/>
<property name="openjpa.DynamicEnhancementAgent"
value="false"/>
<property name="openjpa.Log"
value="SQL=TRACE, Runtime=TRACE, DefaultLevel=TRACE ,Tool=TRACE"/>
<property name="openjpa.Multithreaded" value="true"/>
<property name="openjpa.jdbc.SynchronizeMappings" value="refresh"/>
<property name="openjpa.jdbc.MappingDefaults" value="DefaultMissingInfo=true"/>
<property name="openjpa.jdbc.DBDictionary" value="mysql"/>
<property name="openjpa.QueryCache" value="false"/>
<property name="openjpa.DataCache" value="false"/>
<property name="openjpa.QueryCompilationCache" value="false"/>
<property name="openjpa.jdbc.QuerySQLCache" value="false"/>
<property name="openjpa.jdbc.FinderCache" value="false"/>
<property name="openjpa.DetachState" value="loaded(DetachedStateField=false)"/>
<property name="openjpa.slice.ThreadingPolicy" value="fixed"/>
</properties>
</persistence-unit>
</persistence>
Related
I'm having troubles with "working with multiple databases" in Spring MVC - hibernate JPA
I have two databases called user_db and portal_db. I need to work with them in different jpa units.
here is my persistance.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="user_unit" transaction-type="RESOURCE_LOCAL">
<provider>org.hibernate.ejb.HibernatePersistence</provider>
<class>Package.Entity1</class>
<properties>
<property name="hibernate.connection.url" value="jdbc:postgresql://localhost/user_db" />
<property name="hibernate.connection.useUnicode" value="true" />
<property name="hibernate.connection.characterEncoding" value="UTF-8" />
<property name="hibernate.connection.driver_class" value="org.postgresql.Driver" />
<property name="hibernate.connection.username" value="postgres" />
<property name="hibernate.connection.password" value="" />
<property name="hibernate.dialect" value="org.hibernate.dialect.PostgreSQL82Dialect" />
<!--<property name="hibernate.hbm2ddl.auto" value="create-drop" />-->
<property name="hibernate.hbm2ddl.auto" value="validate" />
<property name="hibernate.show_sql" value="true" />
<property name="hibernate.format_sql" value="true" />
</properties>
</persistence-unit>
<persistence-unit name="portal_unit" transaction-type="RESOURCE_LOCAL">
<provider>org.hibernate.ejb.HibernatePersistence</provider>
<class>Package.Entity2</class>
<properties>
<property name="hibernate.connection.url" value="jdbc:postgresql://localhost/portal_db" />
<property name="hibernate.connection.useUnicode" value="true" />
<property name="hibernate.connection.characterEncoding" value="UTF-8" />
<property name="hibernate.connection.driver_class" value="org.postgresql.Driver" />
<property name="hibernate.connection.username" value="postgres" />
<property name="hibernate.connection.password" value="" />
<property name="hibernate.dialect" value="org.hibernate.dialect.PostgreSQL82Dialect" />
<!--<property name="hibernate.hbm2ddl.auto" value="create-drop"/>-->
<property name="hibernate.hbm2ddl.auto" value="validate"/>
<property name="hibernate.show_sql" value="true"/>
<property name="hibernate.format_sql" value="true"/>
</properties>
</persistence-unit>
</persistence>
Problem is When I use create-drop and run my project, it creates both of my entites in both databases. Like table that should be only created by Package.Entity1 in user_unit, is also created in portal_unit.
And when I select,insert,update my entites, I set persistance unit in each of my individual DAO's.
for example, in Entity Dao's implementation I have:
EntityManagerFactory emf = Persistence.createEntityManagerFactory(persistenceUnit);
where persistenceUnit could be user_unit or portal_unit depending on implementation.
What changes should I make so it wont create same table in both databases?
Add <exclude-unlisted-classes>true</exclude-unlisted-classes> in both of yours persistence units OR use JPA 2.x
Add <exclude-unlisted-classes>true</exclude-unlisted-classes> in both your persistence units.
Please follow post below for detailed explanation:
Multiple persistance unit in persistence.xml creating tables in one another
is there any way to update the column definition of existing table where data is already present or may be table is empty.
Consider this:
#ManyToOne
#JoinColumn(name="type",nullable=false)
private EmpType type;
or
#JoinColumn(name="type",nullable=false)
private String type;
Considering any of above scenario, once hibernate initialized, it create tables column with Not Null property. but When I change them from nullable=false to nullable=true this changes dont reflect in table. It still not null.
My Configuration is also include
<property name="hibernate.hbm2ddl.auto" value="update" />
Is there any other approach, or am I doing it in wrong way ?
Edit
<persistence xmlns="http://java.sun.com/xml/ns/persistence"
version="1.0">
<persistence-unit name="myapp" transaction-type="RESOURCE_LOCAL">
<provider>org.hibernate.ejb.HibernatePersistence</provider>
<properties>
<property name="hibernate.dialect" value="org.hibernate.dialect.MySQL5Dialect" />
<property name="hibernate.hbm2ddl.auto" value="update" />
<property name="hibernate.show_sql" value="false" />
</properties>
</persistence-unit>
and in my spring application context:
<bean id="entityManagerFactory"
class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
<property name="dataSource" ref="dataSource" />
<property name="persistenceUnitName" value="myapp" />
<property name="jpaPropertyMap">
<map>
<entry key="hibernate.ejb.interceptor"
value="org.springframework.orm.hibernate3.support.ScopedBeanInterceptor" />
</map>
</property>
</bean>
Hi all I have pretty strange problem let me first show my configuration etc. Here is persitance.xml:
<persistence-unit name="allegroTransactionPersistenceUnit" transaction-type="RESOURCE_LOCAL">
<provider>org.hibernate.ejb.HibernatePersistence</provider>
<properties>
<property name="hibernate.dialect" value="org.hibernate.dialect.MySQLDialect" />
<property name="hibernate.connection.url" value="jdbc:mysql://localhost:3306/AllegroShop?UseUnicode=true&characterEncoding=utf8" />
<property name="hibernate.connection.driver_class" value="com.mysql.jdbc.Driver" />
<property name="hibernate.connection.username" value="topSecret" />
<property name="hibernate.connection.password" value="topSecret" />
<!-- <property name="hibernate.hbm2ddl.auto" value="create" /> -->
<property name="hibernate.hbm2ddl.auto" value="create" />
<property name="show_sql" value="true" />
<property name="hibernate.hbm2ddl.import_files" value="/SQL/payment_type.sql"/>
<property name="hibernate.connection.useUnicode" value="true" />
<property name="hibernate.connection.characterEncoding" value="UTF-8" />
<property name="hibernate.connection.charSet" value="UTF-8" />
</properties>
</persistence-unit>
And here is method that I use to take data from my database:
#PersistenceContext( unitName = "allegroTransactionPersistenceUnit", type= PersistenceContextType.EXTENDED )
protected EntityManager em;
public List<AllegroTransactionImpl> readAllegroTransactionByCreateDate()
{
TypedQuery<AllegroTransactionImpl> query = this.em.createQuery( "SELECT allegroTransaction FROM com.springapp.mvc.classes.AllegroTransactionImpl allegroTransaction ORDER BY createDate DESC", AllegroTransactionImpl.class);
return query.getResultList();
}
And now the problem. Everything works great if I use hibernate to update / delete / add. but if I change some value directly in base (by SQL statement) hibernate don't refresh it question is why ?
Entity class
https://gist.github.com/spec8320/144100f049f54b73ad86
please make sure you had committed the change by SQL statement.
please check if you have enabled the 2nd level cache on AllegroTransactionImpl
I'm trying to convert my hibernate-based GWT implementation into a JPA2 version. I've added the persistence.xml, the specific libraries and added some code just to open (by getting an entityManager). I just do a local employment, I do not use google's app engine (and I'm not intended to use it).
I get the following message:
Cannot connect to MySQL database
server (Provider error. Provider:
org.datanucleus.store.appengine.jpa.DatastorePersistenceProvider),
exiting
My persistence.xml looks like:
<?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="mydatabase_dev">
<provider>org.hibernate.ejb.HibernatePersistence</provider>
<class>mypackage.Product</class>
<class>mypackage.Expert</class>
<class>mypackage.Person</class>
<properties>
<property name="hibernate.archive.autodetection" value="class, hbm"/>
<property name="hibernate.show_sql" value="false"/>
<property name="hibernate.connection.driver_class" value="com.mysql.jdbc.Driver"/>
<property name="hibernate.connection.url" value="jdbc:mysql://myhost.mydomain/MYDATABASE"/>
<property name="hibernate.connection.username" value="myusername"/>
<property name="hibernate.connection.password" value="topsecret"/>
<property name="hibernate.dialect" value="org.hibernate.dialect.MySQLDialect"/>
<property name="hibernate.hbm2ddl.auto" value="update"/>
<property name="hibernate.c3p0.min_size" value="5"/>
<property name="hibernate.c3p0.max_size" value="20"/>
<property name="hibernate.c3p0.timeout" value="300"/>
<property name="hibernate.c3p0.max_statements" value="50"/>
<property name="hibernate.c3p0.idle_test_period" value="3000"/>
<!-- Disable the second-level cache -->
<property name="cache.provider_class" value="org.hibernate.cache.NoCacheProvider"/>
</properties>
</persistence-unit>
</persistence>
There is no other error message, warning, stacktrace, etc.
What is wrong or in what way can I examine what the real problem is?
GAE/J doesn't do MySQL, nor JPA2 so why are you including it/specifying it in your persistence.xml? Perhaps if you post your persistence.xml then people can make an informed opinion ...
i'm trying to connect to mysql server but get this error. when mydb is the only name in the system. please tell me where i'm wrong...
my persistence xml is as folow:
<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="MyPersistenceUnit">
<provider>org.hibernate.ejb.HibernatePersistence</provider>
<properties>
<property name="hibernate.archive.autodetection" value="class" />
<property name="hibernate.connection.driver_class" value="com.mysql.jdbc.Driver" />
<property name="hibernate.connection.url" value="jdbc:mysql://localhost:3306/mydb" />
<property name="hibernate.connection.username" value="root" />
<property name="hibernate.connection.password" value="tft" />
<property name="hibernate.dialect" value="org.hibernate.dialect.MySQLDialect" />
<property name="hibernate.hbm2ddl.auto" value="create" />
<property name="hibernate.show_sql" value="true" />
<property name="hibernate.format_sql" value="true" />
<property name="hibernate.use_sql_comments" value="true" />
</properties>
</persistence-unit>
</persistence>
1.You have to check your mysql jdbc driver
2.You have to check mysql server state and validation of username & password.