Hibernate - Postgresql properties access - postgresql

I am not able to access the postgresql db properties, which are in small letters. I would like to access the properties using camelCase. Please suggest me the required configuration .

for configure postgreSQL using JPA you can use this persistence.xml
For that you have to create one folder called "META-INF" in your project. and in that folder you have to store this file.
persistence.xml
<?xml version="1.0" encoding="UTF-8"?>
<persistence version="2.1"
xmlns="http://xmlns.jcp.org/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/persistence
http://xmlns.jcp.org/xml/ns/persistence/persistence_2_1.xsd">
<persistence-unit name="give_some_name" transaction-type="RESOURCE_LOCAL">
<provider>org.hibernate.jpa.HibernatePersistenceProvider</provider>
<properties>
<property name="dialect" value="org.hibernate.dialect.PostgreSQLDialect" />
<property name="javax.persistence.jdbc.driver" value="org.postgresql.Driver" />
<property name="javax.persistence.jdbc.url" value="jdbc:postgresql://localhost:5432/database_name" />
<property name="javax.persistence.jdbc.user" value="username" />
<property name="javax.persistence.jdbc.password" value="password" />
<property name="hibernate.show_sql" value="true" />
<property name="hibernate.hbm2ddl.auto" value="update" />
</properties>
</persistence-unit>
</persistence>
Or using hibernate.cfg.xml
(Here no need to create "META-INF folder")
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-configuration SYSTEM
"http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
<session-factory>
<property name="hibernate.connection.driver_class">org.postgresql.Driver</property>
<property name="hibernate.connection.url">jdbc:postgresql://localhost:5432/database_name</property>
<property name="hibernate.connection.username">username</property>
<property name="hibernate.connection.password">password</property>
<property name="hibernate.dialect">org.hibernate.dialect.PostgreSQLDialect</property>
<property name="hibernate.show_sql">true</property>
<property name="hibernate.hbm2ddl.auto">create</property>
<mapping resource="hibernate.hbm.xml"/>
</session-factory>
</hibernate-configuration>

Related

wildfly not use persistence-unit config

i use this configuration in persistence.xml:
<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<persistence xmlns="http://xmlns.jcp.org/xml/ns/persistence"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/persistence http://xmlns.jcp.org/xml/ns/persistence/persistence_2_2.xsd"
version="2.2">
<persistence-unit name="xxxxx" transaction-type="RESOURCE_LOCAL">
<provider>org.hibernate.jpa.HibernatePersistenceProvider</provider>
<class>com.behpanel.demo.model.Sessions</class>
<class>com.behpanel.demo.model.Invoices</class>
<exclude-unlisted-classes>false</exclude-unlisted-classes>
<properties>
<property name="javax.persistence.jdbc.url"
value="jdbc:mysql://localhost:3306/qqqqq"/>
<property name="javax.persistence.jdbc.user" value="****"/>
<property name="javax.persistence.jdbc.driver" value="com.mysql.cj.jdbc.Driver"/>
<property name="javax.persistence.jdbc.password" value="******"/>
<property name="dialect" value="org.hibernate.dialect.MySQL5Dialect"/>
<property name="hibernate.hbm2ddl.auto" value="create-drop"/>
<property name="hibernate.physical_naming_strategy"
value="com.behpanel.demo.config.NamingStrategy"/>
<property name="hibernate.format_sql" value="true"/>
<property name="hibernate.use_sql_comments" value="true"/>
<property name="show_sql" value="true"/>
<property name="format_sql" value="true"/>
<property name="use_sql_comments" value="true"/>
</properties>
</persistence-unit>
</persistence>
when run application in intellij idea and deploy on local wildfly server. wildfly dont use this persistence-unit and use default data source.
and crud actions not persist on mysql db and that actions persist on default datasource that is h2 database.

Show logging parameter for (INSERT,UPDATE,SELECT) in EclipseLink JPA

I used logging in persistence.xml for EclipseLink JPA implementation, from
stackoverflow reference
but the parameters appears as ? how can i show them properly in my glassfish log output window.
The log level configuration is included in the definition of the persistence unit in the persistence.xml file, as follows:
The logging of SQL parameters can be enabled, or disabled through the following properties:
Disable:
Enable:
<property name="eclipselink.logging.level.sql" value="FINE"/>
<property name="eclipselink.logging.parameters" value="true"/>
full persistence.xml
<?xml version="1.0" encoding="UTF-8"?>
<persistence version="2.1" xmlns="http://xmlns.jcp.org/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/persistence http://xmlns.jcp.org/xml/ns/persistence/persistence_2_1.xsd">
<persistence-unit name="ProjPU" transaction-type="JTA">
<jta-data-source>jdbc/POS</jta-data-source>
<exclude-unlisted-classes>false</exclude-unlisted-classes>
<properties>
<property name="eclipselink.weaving" value="static" />
<property name="eclipselink.logging.level.sql" value="FINEST" />
<property name="eclipselink.logging.level" value="FINEST" />
<property name="eclipselink.logging.level.cache" value="FINEST" />
<property name="eclipselink.logging.parameters" value="true" />
</properties>
</persistence-unit>
</persistence>
Note: Setting eclipselink.logging.level to FINE is not sufficient (as of EclipseLink 2.4.0 - Juno), you have to set eclipselink.logging.level.sql to FINE.
This property will also control how parameters are logged in exceptions. By default parameters are only logged for log level < CONFIG.
Refernce:Documentation,Wiki Ecipse link

JPA Change default Flushmode from AUTO to COMMIT

I've tried several ways to change the FlushMode to the complete application.
Is this right or is there another way to do it?
I don't want to do this pragmmatically.
This is was what i find as property but it isn't work.
<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="myPU">
<properties>
...
<property name="hibernate.connection.autocommit" value="false"/>
<!-- Also tried this: -->
<property name="org.hibernate.FlushMode" value="commit"/>
...
</properties>
</persistence-unit>
</persistence>
Update:
I've created the class as described in the link by zxcf, but i can't figure out how to add this construct in my persistence.xml.
<property name="jpaDialect">
<bean class="test.jpa.vendor.HibernateJpaDialect">
<property name="flushMode" value="MANUAL"/>
</bean>
</property>
Try this
<property name="org.hibernate.flushMode" value="COMMIT"/>
Testing this on a standalone program I can see the changed value of underlying Hibernate Session / EntityManager from AUTO to COMMIT
Here is my 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_2_0.xsd"
version="2.0">
<persistence-unit name="JPATest" transaction-type="RESOURCE_LOCAL">
<provider>org.hibernate.jpa.HibernatePersistenceProvider</provider>
<class>com.test.TestEntity</class>
<shared-cache-mode>ENABLE_SELECTIVE</shared-cache-mode>
<properties>
<property name="hibernate.hbm2ddl.auto" value="update"/>
<property name="hibernate.show_sql" value="true"/>
<property name="hibernate.format_sql" value="true"/>
<property name="hibernate.use_sql_comments" value="true"/>
<property name="hibernate.cache.use_query_cache" value="true"/>
<property name="hibernate.archive.autodetection" value="class, hbm"/>
<property name="hibernate.dialect" value="org.hibernate.dialect.MySQL5InnoDBDialect"/>
<property name="hibernate.connection.driver_class" value="com.mysql.jdbc.Driver"/>
<property name="hibernate.connection.username" value="xxx"/>
<property name="hibernate.connection.password" value="xxx"/>
<property name="hibernate.connection.url" value="jdbc:mysql://localhost:3306/test?createDatabaseIfNotExist=true"/>
<property name="hibernate.cache.region.factory_class" value="org.hibernate.cache.ehcache.SingletonEhCacheRegionFactory"/>
<property name="hibernate.cache.provider_configuration" value="classpath:ehcache.xml"></property>
<property name="hibernate.use.second.level.cache" value="true"/>
<property name="hibernate.cache.region_prefix" value="neutrino.jpa.cache"/>
<property name="hibernate.cache.use_query_cache" value="false"/>
<property name="hibernate.generate_statistics" value="true"/>
<property name="hibernate.jdbc.batch_size" value="10"/>
<property name="hibernate.order_updates" value="true"/>
<property name="hibernate.order_inserts" value="true"/>
<property name="org.hibernate.flushMode" value="COMMIT"/>
</persistence-unit>
</persistence>
And here is how I test it
EntityManagerFactory emf = Persistence.createEntityManagerFactory("JPATest");
EntityManager em = emf.createEntityManager();
Session session = em.unwrap(Session.class);
System.out.println("Underlying Hibernate session flushmode ####### "+session.getFlushMode());
System.out.println("EntityManager flushmode ####### "+em.getFlushMode());
This gives me
Underlying Hibernate session flushmode ####### COMMIT
EntityManager flushmode ####### COMMIT
If I omit the property in presistence.xml, I get this
Underlying Hibernate session flushmode ####### AUTO
EntityManager flushmode ####### AUTO
Ancient Hibernate 3.2.4.sp1 from JBoss 4.2.3.GA supports only the following notation:
<property name="flush-mode" value="commit"/>

openJPA's persistence.xml configuration

Earlier in my project I was using a combination of Hibernate 3.3.2, openJPA 2.1.1 to connect to the database and retrieve the information from table. Now I want to remove Hibernate and use openJPA for doing connection and retrieving the information.
My earlier configuration of persistence.xml was
<?xml version="1.0" encoding="UTF-8"?>
<persistence version="2.0" 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 persistence_2_0.xsd">
<persistence-unit name="test" transaction-type="RESOURCE_LOCAL">
<provider>org.hibernate.ejb.HibernatePersistence</provider>
<properties>
<property name="hibernate.dialect" value="org.hibernate.dialect.MySQLDialect"/>
<property name="hibernate.connection.driver_class" value="com.mysql.jdbc.Driver"/>
<property name="hibernate.connection.provider_class">org.hibernate.connection.C3P0ConnectionProvider</property>
<property name="hibernate.connection.url" value="jdbc:mysql://10.10.10.10:3306/test?autoReconnect=true"/>
<property name="hibernate.connection.username" value="user"/>
<property name="hibernate.connection.password" value="pwd"/>
<property name="hibernate.generate_statistics" value="true"/>
<property name="hibernate.cache.provider_class" value="org.hibernate.cache.OSCacheProvider"/>
<property name="hibernate.cache.use_second_level_cache" value="true"/>
<property name="hibernate.show_sql" value="true"/>
<property name="hibernate.format_sql" value="true"/>
<property name="hibernate.c3p0.min_size" value="5"/>
<property name="hibernate.c3p0.max_size" value="20"/>
<property name="hibernate.c3p0.timeout" value="1800"/>
<property name="hibernate.c3p0.max_statements" value="50"/>
<property name="hibernate.c3p0.idle_test_period" value="1800"/>
<property name="c3p0.idleConnectionTestPeriod" value="1810"/>
</properties>
</persistence-unit>
</persistence>
Now I want to move to openJPA 2.1.1 and for that my persistence.xml file is
<?xml version="1.0" encoding="UTF-8"?>
<persistence version="2.0" 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">
<persistence-unit name="TestOpenJPAPersistence" transaction-type="RESOURCE_LOCAL">
<provider>org.apache.openjpa.persistence.PersistenceProviderImpl</provider>
<properties>
<property name="javax.persistence.jdbc.url" value="jdbc:mysql://10.10.10.10:3306/test?autoReconnect=true"/>
<property name="javax.persistence.jdbc.user" value="user"/>
<property name="javax.persistence.jdbc.password" value="pwd"/>
<property name="javax.persistence.jdbc.driver" value="com.mysql.jdbc.Driver"/>
<property name="openjpa.ConnectionFactoryProperties" value="MaxActive=10,MaxIdle=5,MinIdle=2,MaxWait=1800000"/>
<property name="openjpa.Log" value="File=E:\\temp\\TestOpenJPAPersistence\\org.apache.openjpa.log, DefaultLevel=DEBUG, Runtime=INFO, Tool=INFO, SQL=TRACE"/>
<property name="openjpa.jdbc.DBDictionary" value="org.apache.openjpa.jdbc.sql.MySQLDictionary"/>
<property name="openjpa.DataCache" value="true"/>
<property name="openjpa.QueryCache" value="true"/>
</properties>
</persistence-unit>
</persistence>
My question is what are the replacement property for following hibernate property in openJPA
<property name="hibernate.connection.provider_class">org.hibernate.connection.C3P0ConnectionProvider</property>
<property name="hibernate.cache.provider_class" value="org.hibernate.cache.OSCacheProvider"/>
<property name="hibernate.cache.use_second_level_cache" value="true"/>
<property name="hibernate.show_sql" value="true"/>
<property name="hibernate.format_sql" value="true"/>
<property name="hibernate.c3p0.min_size" value="5"/>
<property name="hibernate.c3p0.max_size" value="20"/>
<property name="hibernate.c3p0.timeout" value="1800"/>
<property name="hibernate.c3p0.max_statements" value="50"/>
<property name="hibernate.c3p0.idle_test_period" value="1800"/>
After many trial and error I have found some replacement parameters. My present persistence.xml file looks like
persistence.xml:
<provider>org.apache.openjpa.persistence.PersistenceProviderImpl</provider>
<properties>
<property name="openjpa.ConnectionURL" value="jdbc:mysql://xx.xx.xx.xx:3306/dbname"/>
<property name="openjpa.ConnectionDriverName" value="com.mysql.jdbc.Driver"/>
<property name="openjpa.ConnectionUserName" value="xxx"/>
<property name="openjpa.ConnectionPassword" value="xxx"/>
<property name="openjpa.DynamicEnhancementAgent" value="true"/>
<property name="openjpa.RuntimeUnenhancedClasses" value="supported"/>
<property name="openjpa.Log" value="SQL=TRACE"/>
<property name="openjpa.ConnectionFactoryProperties" value="PrettyPrint=true, PrettyPrintLineLength=72, PrintParameters=true, MaxActive=10, MaxIdle=5, MinIdle=2, MaxWait=60000"/>
</properties>
For connection pooling information check and for all OpenJPA Properties check
Hope this helps

I have just configured a new datasource on jboss

And created a new user, I have granted it select/update delete rights on specific tables as required.
Will this be enough to use persistence, or will jboss need admin rights as well ?
No, it shouldn't need admin rights.
Easiest answer - try it and see.
No, no need to assign admin rights. It will enough by using persistence.xml
please add following in your persistence.xml
<persistence-unit name="abc" transaction-type="JTA"> and
<jta-data-source>java:jboss/datasources/data_source_name</jta-data-source>
persistence.xml should like this:
<?xml version="1.0" encoding="UTF-8"?>
<persistence version="2.0"
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">
<persistence-unit name="abc" transaction-type="JTA">
<jta-data-source>java:jboss/datasources/data_source_name</jta-data-source>
<provider>org.hibernate.ejb.HibernatePersistence</provider>
<!-- Map entity classes -->
<class> com.packege.classname </class>
<properties>
<!-- Properties for Hibernate -->
<property name="hibernate.connection.driver_class" value="com.mysql.jdbc.Driver" />
<property name="hibernate.dialect" value="org.hibernate.dialect.MySQLDialect" />
<property name="hibernate.connection.url" value="jdbc:mysql://localhost:3306/DB_NAME" />
<property name="hibernate.connection.username" value="root" />
<property name="hibernate.connection.password" value="root" />
<property name="hibernate.dialect" value="org.hibernate.dialect.MySQLDialect" />
<property name="hibernate.hbm2ddl.auto" value="update" />
<property name="hibernate.show_sql" value="true" />
</properties>
</persistence-unit>
</persistence>
and provide the persistence unit name to createEntityManagerFactory method in Hibernate util class.
Persistence.createEntityManagerFactory("abc");