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Creating schema from sql file looks OK, but tables are not found

In persistence.xml I am creating a database (in-memory database for test) like this:
<persistence-unit name="TestDatabase" transaction-type="RESOURCE_LOCAL">
<provider>org.hibernate.jpa.HibernatePersistenceProvider</provider>
<jar-file>pathToMyJar.jar</jar-file>
<properties>
<property name="hibernate.dialect" value="org.hibernate.dialect.H2Dialect" />
<property name="javax.persistence.jdbc.url" value="jdbc:h2:mem:test" />
<property name="javax.persistence.jdbc.driver" value="org.h2.Driver" />
<property name="hibernate.format_sql" value="true" />
<property name="hibernate.show_sql" value="true" />
<property name="hibernate.archive.autodetection" value="class, hbm" />
<property name="javax.persistence.schema-generation.database.action" value="create"/>
</properties>
</persistence-unit>
That works as expected but is slow. So I saved a sql-script for schema generation like this:
<persistence-unit name="TestDatabase" transaction-type="RESOURCE_LOCAL">
<provider>org.hibernate.jpa.HibernatePersistenceProvider</provider>
<jar-file>pathToMyJar.jar</jar-file>
<properties>
<property name="hibernate.dialect" value="org.hibernate.dialect.H2Dialect" />
<property name="javax.persistence.jdbc.url" value="jdbc:h2:mem:test" />
<property name="javax.persistence.jdbc.driver" value="org.h2.Driver" />
<property name="hibernate.format_sql" value="true" />
<property name="hibernate.show_sql" value="true" />
<property name="hibernate.archive.autodetection" value="class, hbm" />
<property name="javax.persistence.schema-generation.database.action" value="create"/>
<property name="javax.persistence.schema-generation.scripts.action" value="create"/>
<property name="javax.persistence.schema-generation.scripts.create-target" value="pathToSchemaGeneratonScript.sql"/>
</properties>
</persistence-unit>
And then tried to use it like this:
<persistence-unit name="TestDatabase" transaction-type="RESOURCE_LOCAL">
<provider>org.hibernate.jpa.HibernatePersistenceProvider</provider>
<properties>
<property name="hibernate.dialect" value="org.hibernate.dialect.H2Dialect" />
<property name="javax.persistence.jdbc.url" value="jdbc:h2:mem:test" />
<property name="javax.persistence.jdbc.driver" value="org.h2.Driver" />
<property name="hibernate.format_sql" value="true" />
<property name="hibernate.show_sql" value="true" />
<property name="javax.persistence.schema-generation.database.action" value="create"/>
<property name="javax.persistence.schema-generation.create-source" value="script"/>
<property name="javax.persistence.schema-generation.create-script-source" value="pathToSchemaGeneratonScript.sql"/>
</properties>
</persistence-unit>
Since show_sql is set to true I can see that the script runs, e.g "create table xxx (...".
But no tables seems to exist, e.g:
entityManagerFactory = Persistence.createEntityManagerFactory("TestDatabase");
entityManager = entityManagerFactory.createEntityManager();
transaction = entityManager.getTransaction();
transaction.begin();
Query query = entityManager.createNativeQuery("insert into xxx (someColumns) values (someValues)");
query.executeUpdate();
Will result in "org.hibernate.engine.jdbc.spi.SqlExceptionHelper - Table "xxx" not found".
I have connected manually and verified that the tables are not there. I also applied the generated sql file manually and then the tables are created as expected.

java.lang.IllegalArgumentException: No query defined for that name

Getting "No query defined for that name" when using entitymanager.
I have the following entity -
#Entity
#Table(name="STUDENT")
#NamedQuery(name="student.getAll", query="select s from Student s")
public class Student {
// ...........
}
And using the Entity Manager as shown below -
public class Student_NamedQuery {
public static void main(String[] args) {
EntityManagerFactory entityManagerFactory = Persistence.createEntityManagerFactory("com.udemy.jpa");
EntityManager entityManager = entityManagerFactory.createEntityManager();
entityManager.getTransaction().begin();
Query query = entityManager.createNamedQuery("student.getALL");
List<Student> studentList = query.getResultList();
System.out.println(studentList);
entityManager.close();
entityManagerFactory.close();
}
}
Below is the persistence.xml -
<persistence version="1.0"
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_1_0.xsd">
<persistence-unit name="com.udemy.jpa" transaction-type="RESOURCE_LOCAL">
<class>com.udemy.jpa.Student</class>
<properties>
<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.url" value="jdbc:mysql://localhost/udemy?serverTimezone=UTC" />
<property name="hibernate.connection.user" value="root" />
<property name="hibernate.connection.password" value="root" />
<property name="hibernate.hbm2ddl.auto" value="update"/>
<property name="hibernate.show_sql" value="true" />
<property name="hibernate.format_sql" value="true" />
<property name="use_sql_comments" value="true" />
</properties>
</persistence-unit>
</persistence>
When I run Student_NamedQuery.java, I am getting "No query defined for that name" error. I searched all over the internet but failed to find out the problem.

You seem to have a typing error here. You have not used the correct name of the named query (LL != ll).

Hibernate Setup on Webservice Intellij

I am trying to setup a REST API using Hibernate as my ORM Mapper. As IDE I am using IntelliJ. The project folder structure looks like this:
projectstructure
I setup the project with Glassfish like this instructions
The REST-API part works fine so I won't bother pasting all of that in here. To test the Hibernate functionality I wrote this class:
public class ArtistRepository {
public static void testHibernate(){
EntityManagerFactory factory = Persistence.createEntityManagerFactory("emf");
EntityManager manager = factory.createEntityManager();
Artist green = new Artist();
green.setName("TEST");
manager.getTransaction().begin();
manager.persist(green);
manager.getTransaction().commit();
}
}
The persistence.xml looks like this:
<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="emf">
<provider>org.hibernate.jpa.HibernatePersistenceProvider</provider>
<properties>
<property name="hibernate.archive.autodetection" value="class, hbm" />
<property name="hibernate.show_sql" value="false" />
<property name="hibernate.format_sql" value="true" />
<property name="hibernate.connection.driver_class" value="com.mysql.jdbc.Driver" />
<property name="hibernate.connection.url"
value="jdbc:mysql://localhost:3306/database?autoReconnect=true" />
<property name="hibernate.connection.username" value="*****" />
<property name="hibernate.connection.password" value="*****" />
<property name="hibernate.hbm2ddl.auto" value="update" />
<property name="hibernate.c3p0.min_size" value="5" />
<property name="hibernate.c3p0.max_size" value="10" />
<property name="hibernate.c3p0.timeout" value="300" />
<property name="hibernate.c3p0.max_statements" value="50" />
<property name="hibernate.c3p0.idle_test_period" value="300" />
<property name="hibernate.dialect" value="org.hibernate.dialect.MySQL5InnoDBDialect" />
</properties>
</persistence-unit>
</persistence>
When I request a REST resource using that method I get the following error:
<p>
<b>exception</b>
<pre>javax.servlet.ServletException: javax.persistence.PersistenceException: No Persistence provider for EntityManager named emf</pre>
</p>
<p>
<b>root cause</b>
<pre>javax.persistence.PersistenceException: No Persistence provider for EntityManager named emf</pre>
</p>
<p>
<b>note</b>
<u>The full stack traces of the exception and its root causes are available in the GlassFish Server Open Source Edition 5.0 logs.</u>
</p>
So obviousley the persistence.xml is in the wrong directory, but I have no clue where to put it.

JPA does not honours caching while creating entity manager factory dynamically

I am using hibernate 4.2 and working on J2ee6 with tomee 1.7.4 . I need to write multi-tenant code, which can connect to various databases on demand. I tried doing this by creating multiple persistence units in persistence.xml, but during server startup tomee tries to validate connection to all persistence units(all of them might not be available during testing).
I tried to find some setting that tells tomee to skip validation of the connections at startup, but couldn't find one. So instead of creating entitymanager from persistence unit, I started using the function
javax.persistence.Persistence.createEntityManagerFactory(String persistenceUnitName, Map properties)
and my persistence xml did not had any properties. This helped me solve this problem, but my caching stopped working when i moved to this model, it was working previously.
Can any one suggest some way in which i can ask tomee to skip validating persistence units at startup, or i can enable caching in the other way that i found.
My previous persistence.xml looked like
<?xml version="1.0" encoding="UTF-8" ?><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" xmlns="http://java.sun.com/xml/ns/persistence">
<persistence-unit name="localDB" transaction-type="RESOURCE_LOCAL">
<provider>org.hibernate.ejb.HibernatePersistence</provider>
<shared-cache-mode>ENABLE_SELECTIVE</shared-cache-mode>
<properties>
<property name="hibernate.connection.provider_class" value="org.hibernate.connection.C3P0ConnectionProvider" />
<property name="hibernate.show_sql" value="false" />
<property name="hibernate.format_sql" value="false" />
<property name="hibernate.connection.driver_class" value="com.mysql.jdbc.Driver" />
<property name="hibernate.connection.url" value="jdbc:mysql://localhost:3306/xxxxxx?autoReconnect=true" />
<property name="hibernate.connection.username" value="xxxxx" />
<property name="hibernate.connection.password" value="xxxxx" />
<property name="hibernate.dialect" value="org.hibernate.dialect.MySQLDialect"/>
<property name="hibernate.c3p0.acquire_increment" value="1"/>
<property name="hibernate.c3p0.max_size" value="40"/>
<!-- it must be set to LESS than the wait_timout setting for the mysql server (this setting defaults to 28800 secs (8 hours)) -->
<property name="hibernate.c3p0.idle_test_period" value="28680" />
<property name="hibernate.c3p0.preferredTestQuery" value="select 1;" />
<property name="hibernate.c3p0.timeout" value="60000"/>
<property name="hibernate.connection.zeroDateTimeBehavior" value="convertToNull"/>
<property name="hibernate.c3p0.debugUnreturnedConnectionStackTraces " value="true"/>
<property name="debugUnreturnedConnectionStackTraces " value="true"/>
<property name="hibernate.cache.use_second_level_cache" value="true" />
<property name="hibernate.cache.use_query_cache" value="true" />
<property name="hibernate.cache.region.factory_class" value="com.mc.hibernate.memcached.MemcachedRegionFactory" />
<property name="hibernate.memcached.operationTimeout" value = "40000"/>
<property name="hibernate.memcached.connectionFactory" value = "KetamaConnectionFactory"/>
<property name="hibernate.memcached.hashAlgorithm" value = "HashAlgorithm.FNV1_64_HASH"/>
<property name="hibernate.memcached.servers" value = "xxxxx:xxxx"/>
<property name="hibernate.cache.region_prefix" value=""/>
</properties>
</persistence-unit>
<persistence-unit name="production" transaction-type="RESOURCE_LOCAL">
<provider>org.hibernate.ejb.HibernatePersistence</provider>
<shared-cache-mode>ENABLE_SELECTIVE</shared-cache-mode>
<properties>
<property name="hibernate.connection.provider_class" value="org.hibernate.connection.C3P0ConnectionProvider" />
<property name="hibernate.show_sql" value="false" />
<property name="hibernate.format_sql" value="false" />
<property name="hibernate.connection.driver_class" value="com.mysql.jdbc.Driver" />
<property name="hibernate.connection.url" value="jdbc:mysql://xxxxx:3306/thewalkindb?autoReconnect=true" />
<property name="hibernate.connection.username" value="xxxx" />
<property name="hibernate.connection.password" value="xxxxx" />
<property name="hibernate.dialect" value="org.hibernate.dialect.MySQLDialect"/>
<property name="hibernate.c3p0.acquire_increment" value="1"/>
<property name="hibernate.c3p0.max_size" value="15"/>
<!-- it must be set to LESS than the wait_timout setting for the mysql server (this setting defaults to 28800 secs (8 hours)) -->
<property name="hibernate.c3p0.idle_test_period" value="28680" />
<property name="hibernate.c3p0.preferredTestQuery" value="select 1;" />
<property name="hibernate.c3p0.timeout" value="60000"/>
<property name="hibernate.connection.zeroDateTimeBehavior" value="convertToNull"/>
<property name="hibernate.c3p0.debugUnreturnedConnectionStackTraces " value="true"/>
<property name="debugUnreturnedConnectionStackTraces " value="true"/>
<property name="hibernate.cache.use_second_level_cache" value="true" />
<property name="hibernate.cache.use_query_cache" value="true" />
<property name="hibernate.cache.region.factory_class" value="com.mc.hibernate.memcached.MemcachedRegionFactory" />
<property name="hibernate.memcached.operationTimeout" value = "40000"/>
<property name="hibernate.memcached.connectionFactory" value = "KetamaConnectionFactory"/>
<property name="hibernate.memcached.hashAlgorithm" value = "HashAlgorithm.FNV1_64_HASH"/>
<property name="hibernate.memcached.servers" value = "xxxxxxxx"/>
<property name="hibernate.cache.region_prefix" value=""/>
</properties>
</persistence-unit>
this works with caching , but it doesnot gives me flexibility to skip validation at tomee startup
My new persistence xml which does not honours caching, but allows me the flexibility is as follows
<?xml version="1.0" encoding="UTF-8" ?>
<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" xmlns="http://java.sun.com/xml/ns/persistence">
<persistence-unit name="localDB" transaction-type="RESOURCE_LOCAL">
<provider>org.hibernate.ejb.HibernatePersistence</provider>
<shared-cache-mode>ENABLE_SELECTIVE</shared-cache-mode>
<properties></properties>
</persistence-unit>
<persistence-unit name="production" transaction-type="RESOURCE_LOCAL">
<provider>org.hibernate.ejb.HibernatePersistence</provider>
<shared-cache-mode>ENABLE_SELECTIVE</shared-cache-mode>
<properties>
</properties>
</persistence-unit>
I am populating all the properties in a map and calling the function
javax.persistence.Persistence.createEntityManagerFactory(String persistenceUnitName, Map properties), but somehow it does not honours caching.

I don't get the link between validation and caching. If you do a facade to the entity manager tenant aware you just have caching per entity manager which means you will not check local cache for production persistence unit.
If you want a single entity manager - =you'll get a single JPA cache in this mode which will merge local and production - you can use dynamic routing: http://tomee.apache.org/examples-trunk/dynamic-datasource-routing/README.html instead of dynamic persistence units.

Hibernate entityManager not deleting object even after flush/refresh

I am using hibernates entityManager to delete an object. However the object is not getting deleted even after flushing the entityManager. It is getting returned if I do a find on it using is id.
Following is what my piece of code looks like:
#PersistenceContext(unitName = "registryPU")
private EntityManager em;
public <E> E delete(Class<E> clazz, String id) {
E en=(E) find(clazz, id);
if(en != null){
em.remove(en);
em.flush();
}
en=(E) find(clazz, id);
assert ( en == null);
return en;
}
public <E> E find(Class<E> clazz, String id) {
return em.find(clazz, id);
}
and the persistence.xml is as follows:
<persistence-unit name="registryPU"
transaction-type="JTA">
<provider>org.hibernate.ejb.HibernatePersistence</provider>
<validation-mode>CALLBACK</validation-mode>
<properties>
<property name="hibernate.dialect" value="org.hibernate.dialect.HSQLDialect" />
<property name="hibernate.hbm2ddl.auto" value="create-drop" />
<property name="hibernate.connection.charSet" value="UTF-8" />
<property name="hibernate.show_sql" value="true" />
<property name="hibernate.hbm2ddl.import_files" value="import.sql"/>
<property name="hibernate.temp.use_jdbc_metadata_defaults" value="false" />
<property name="hibernate.event.merge.entity_copy_observer" value="allow"/>
</properties>
</persistence-unit>
</persistence>
This should ideally work fine, but is throwing java.lang.AssertionError because of the assert statement. Can someone let me know what is wrong in this and how to avoid it ?

Try to use this after remove(), but before flush()
em.getTransaction().commit();

Can't see <jta-data-source> entry in your persistence.xml. Try adding it as below:
<persistence-unit name="registryPU"
transaction-type="JTA">
<jta-data-source>jdbc/sample</jta-data-source>
<provider>org.hibernate.ejb.HibernatePersistence</provider>
<validation-mode>CALLBACK</validation-mode>
<properties>
<property name="hibernate.dialect" value="org.hibernate.dialect.HSQLDialect" />
<property name="hibernate.hbm2ddl.auto" value="create-drop" />
<property name="hibernate.connection.charSet" value="UTF-8" />
<property name="hibernate.show_sql" value="true" />
<property name="hibernate.hbm2ddl.import_files" value="import.sql"/>
<property name="hibernate.temp.use_jdbc_metadata_defaults" value="false" />
<property name="hibernate.event.merge.entity_copy_observer" value="allow"/>
</properties>
</persistence-unit>
</persistence>