I got a simple java project created with maven (quickstart archetype)
I am trying to configure JPA persistence for drools sessions (the code comes from drools documentation)
I added drools-persistence-jpa, Bitronix Transaction Manager and com.h2database dependencies to my pom.xml
I created a META-INF folder as Source-Folder in my Eclipse Project in "src/META-INF"
I added the persistence.xml and jndi.properties file there.
In my TestCase I have following code:
[...]
EntityManagerFactory emf = Persistence.createEntityManagerFactory("org.drools.persistence.jpa");
[...]
When running the test, I get the following Exception:
javax.persistence.PersistenceException: No Persistence provider for
EntityManager named org.drools.persistence.jpa at
javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:69)
at
javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:47)
at com.sample.MyTest.testJPA(MyTest.java:112)
I am relatively sure, that there's just something wrong with the way I created the META-INF or persistence.xml (see below). Any suggestions?
<?xml version="1.0" encoding="UTF-8"?>
<persistence version="1.0"
xmlns="http://java.sun.com/xml/ns/persistence" xmlns:orm="http://java.sun.com/xml/ns/persistence/orm"
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
http://java.sun.com/xml/ns/persistence/orm
http://java.sun.com/xml/ns/persistence/orm_1_0.xsd">
<persistence-unit name="org.drools.persistence.jpa" transaction-type="JTA">
<provider>org.hibernate.ejb.HibernatePersistence</provider>
<jta-data-source>jdbc/testDatasource</jta-data-source>
<class>org.drools.persistence.info.SessionInfo</class>
<class>org.drools.persistence.processinstance.ProcessInstanceInfo</class>
<class>org.drools.persistence.processinstance.ProcessInstanceEventInfo</class>
<properties>
<property name="hibernate.dialect" value="org.hibernate.dialect.H2Dialect" />
<property name="hibernate.max_fetch_depth" value="3" />
<property name="hibernate.hbm2ddl.auto" value="create" />
<property name="hibernate.show_sql" value="true" />
<property name="hibernate.connection.autocommit" value="true" />
<property name="hibernate.transaction.manager_lookup_class" value="org.hibernate.transaction.BTMTransactionManagerLookup" />
</properties>
</persistence-unit>
</persistence>
I think the problem is related to the place where you put your persistence.xml file. Instead of src/META-INF you must place is either in src/main/resources/META-INF or src/test/resources/META-INF
Edited:
In your persistence.xml file you are stating that you want to use org.hibernate.ejb.HibernatePersistence as a provider. According to your comments, you are not including hibernate-entitymanager as a dependency [source]. Try to add that dependency.
Hope it helps,
Related
I am creating a small JPA project.
But I am receiving the below error, when I run the main class.
Exception in thread "main" javax.persistence.PersistenceException: No Persistence provider for EntityManager named ClientAccount
at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:56)
at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:34)
at com.infinite.ClientAccountMain.main(ClientAccountMain.java:12)
the name in the persistence unit is the same used in the entity manager factory
EntityManagerFactory entityManagerFactory = Persistence.createEntityManagerFactory("ClientAccount");
<?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="ClientAccount">
<description>My Persistence Unit</description>
<provider>org.eclipse.persistence.jpa.PersistenceProvider</provider>
<class>com.infinite.Order</class>
<class>com.infinite.Account</class>
<class>com.infinite.Client</class>
<exclude-unlisted-classes>false</exclude-unlisted-classes>
<properties>
<property name="javax.persistence.jdbc.driver" value="com.microsoft.sqlserver.jdbc.SQLServerDriver" />
<property name="javax.persistence.jdbc.url" value="jdbc:sqlserver://localhost:3306;databaseName=testdatabase" />
<property name="javax.persistence.jdbc.user" value="test"/>
<property name="javax.persistence.jdbc.password" value="test"/>
</properties>
</persistence-unit>
I think that Neil Stockton is right and if you search a bit you will find your answer. Although I think that must be something in relation with your provider information.
Try to put something like this.
For OpenJPA
<provider>org.apache.openjpa.persistence.PersistenceProviderImpl</provider>
Source information ---> http://openjpa.apache.org/builds/1.0.3/apache-openjpa-
1.0.3/docs/manual/jpa_overview_persistence.html
For Hibernate
<provider>org.hibernate.ejb.HibernatePersistence</provider>
There are multiple causes for this error:
You do not have the specified JPA provider on your classpath (check the JARs).
You did not define the persistence unit in your persistence.xml file.
Your persistence provider did not find your persistence.xml file (usually it is in META-INF/persistence.xml). Check that it is on the right place.
I'm trying to integrate Batoo JPA in one of my projects using gradle and Jetty as a server.
What libraries do I have to integrate? Is there a sample available?
Currently I have these:
'org.batoo.jpa:persistence-api:2.0',
'javax.validation:validation-api:1.0.0.GA',
'com.jolbox:bonecp:0.8.0-rc1'
But these appear not to be enough. Before going further with "trial and error" I'd wanted to ask here at stackoverflow first, what libraries I need to get started with Batoo Jpa (together with gradle and Jetty).
Thanks
In one basic project i made, i had to configure these libraries:
-batoo-annotations-2.0.1.0-RTM.jar
-batoo-annotations-2.0.1.0-RTM-sources.jar
-batoo-jdbc-2.0.1.0-RTM.jar
-batoo-jpa-2.0.1.0-RTM.jar
-batoo-jpa-spi-2.0.1.0-RTM.jar
-jpql-0.1.6.jar
-parser-2.0.1.0-RTM.jar
-persistence-api-2.0.jar
-guava-14.0.1.jar
-commons-lang-2.6.jar
-validation-api-1.0.0.GA.jar
-bonecp-0.7.1.RELEASE.jar
-commons-dbutils-1.5.jar
-commons-io-2.4.jar
-asm-3.3.1.jar
-h2-1.3.171.jar <-- I add this one as database driver it could be changed.
If you have problem with transactions (if i remember correctly Batoo raise exceptions if you don't have a transaction control, but you can test it) i configured these libraries in order to have a CDI transaction control, but you can omit these if you want to use spring or Batoo does works well without a transaction control :-)
-deltaspike-cdictrl-api-0.3-incubating.jar
-deltaspike-cdictrl-weld-0.3-incubating.jar
-deltaspike-core-api-0.3-incubating.jar
-deltaspike-core-impl-0.3-incubating.jar
-deltaspike-jpa-module-api-0.3-incubating.jar
-deltaspike-jpa-module-impl-0.3-incubating.jar
-weld-api-2.0.0.jar
-weld-spi-2.0.0.jar
-weld-se-2.0.0.jar
Now, remember that Batoo uses standard properties in the persistence.xml file, 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="your PU name" transaction-type="RESOURCE_LOCAL">
<provider>org.batoo.jpa.core.BatooPersistenceProvider</provider>
<class>here.you.add.your.Entities</class>
<properties>
<!-- here your driver-->
<property name="javax.persistence.jdbc.driver" value="org.h2.Driver" />
<!-- here the URL of your database-->
<property name="javax.persistence.jdbc.url" value="jdbc:h2:tcp://localhost/~/test" />
<!-- here your username-->
<property name="javax.persistence.jdbc.user" value="sa" />
<!-- here your password-->
<property name="javax.persistence.jdbc.password" value="" />
</properties>
</persistence-unit>
Hope this helps, cheers :-)
I'm using Eclipse Juno, Glassfish 3.1.2, and MySQL 5.1.
I'm building a simple EJB & JSF application. I created the following eclipse projects:
appEAR <-- the EAR file
appEJB <-- contains UserService.java EJB
appJPA <-- contains UserDAO.java EJB, and User.java object
appWeb <-- contains index.jsp
It's just a skeleton right now, but I can deploy the app and see the index.jsp
Next, I tried to add the following to the UserDAO ...
#PersistenceContext
EntityManager em;
But then when the app tries to republish, it gives me the error:
'Publishing to GlassFish 3.1.2 at localhost...' has encountered a problem. cannot Deploy appEar
There are no other details.
When I remove the two lines of #PersistenceContent code, the app deploys again.
Also, the persistence.xml file n the appJPA project is as follows:
<?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="appJPA">
<class>app.model.User</class>
</persistence-unit>
</persistence>
Please help ... what am I missing? I'm rather stuck.
Your persistence.xml is incomplete , you need to provide Connection properties to specify the provider ,which DB to connect etc
Heres an example using hibernate as the JPA provided
<persistence-unit name="educationPU"
transaction-type="JTA">
<provider>org.hibernate.ejb.HibernatePersistence</provider>
<class>com.coe.jpa.StudentProfile</class>
<properties>
<property name="hibernate.connection.driver_class"
value="com.mysql.jdbc.Driver" />
<property name="hibernate.connection.url"
value="jdbc:mysql://localhost:3306/COE" />
<property name="hibernate.connection.username" value="root" />
<property name="show_sql" value="true" />
<property name="dialect" value="org.hibernate.dialect.MySQLDialect" />
</properties>
</persistence-unit>
and heres a more Generic one
I am very new to glassfish, JPA and so on and I have really problems with setting that up. What I am planning to do is a simple RESTful service with a persistent backend. I am using glassfish3 as application server and already deployed a simple REST service with the jersey-library. Now I want to provide access to a database via JPA. Glassfish is shipped with JavaDB/derby and EclipseLink, is that right? So, I want to use that :-)
I created a persistence.xml in META-INF:
<?xml version="1.0" encoding="UTF-8"?>
<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="myPU" transaction-type="JTA">
<provider>org.eclipse.persistence.jpa.PersistenceProvider</provider>
<exclude-unlisted-classes>false</exclude-unlisted-classes>
<properties>
<property name="javax.persistence.jdbc.driver" value="org.apache.derby.jdbc.ClientDataSource" /> <!-- org.apache.derby.jdbc.EmbeddedDriver -->
<property name="javax.persistence.jdbc.url" value="jdbc:derby://localhost:1527/sample;create=true" />
<property name="javax.persistence.jdbc.user" value="APP" />
<property name="javax.persistence.jdbc.password" value="APP" />
<property name="eclipselink.ddl-generation" value="create-tables" />
</properties>
</persistence-unit>
</persistence>
I don't use glassfish. But I think the reason is that you didn't specify any datasource in the persistence.xml. you should do this in it, which you can use jndi or other way. and second, you should define the entityManagerFactory bean in spring context xml file.
Did you add the datasource in glasfish ? You will need to add the mysql jdbc drivers too. In Java EE, it's the persistence container (inside the server) which will create and manage the datasource for you.
See http://www.albeesonline.com/blog/2008/08/06/creating-and-configuring-a-mysql-datasource-in-glassfish-application-server/
I am using JPA and I tried to put my configuration data in the persistence.xml file.
But when I run the app, the error is as follows:
[hibernatetool] org.hibernate.MappingException: invalid configuration
[hibernatetool] org.xml.sax.SAXParseException: Document is invalid: no grammar found.
And I googled it. It seems to say I have missed the DOCTYPE part. Like:
<!DOCTYPE hibernate-configuration PUBLIC
"-//Hibernate/Hibernate Configuration DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">
So I tried to add the missing DOCTYPE part. But new question comes. WHAT should I add?
<?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="helloworld">
<property name="hibernate.connection.driver_class" value="com.mysql.jdbc.Driver" />
<property name="hibernate.connection.url" value="jdbc:mysql://localhost:3306/db" />
<property name="hibernate.connection.username" value="*****" />
<property name="hibernate.connection.password" value="*****" />
<property name="hibernate.dialect" value="org.hibernate.dialect.MySQLInnoDBDialect" />
</persistence-unit>
</persistence>
PS:
I have downdloaded several jpa sample projects and checked the associated persistence.xml files but found that they are all absent of the DOCTYPE part.
Is the DOCTYPE part necessary, I have to ask, because so many code samples are absent from it.
The solution for my problem seems to be:
what should I put for the DOCTYPE part.
You miss the properties-element, which is child of persistence-unit and parent for property-elements.
<persistence-unit name="helloworld">
<properties>
<property name="hibernate.connection.driver_class" value="com.mysql.jdbc.Driver" />
<property name="hibernate.connection.url" value="jdbc:mysql://localhost:3306/db" />
...
</properties>
</persistence-unit>
My IDE is eclipse -Helios and I am using mojarra jsf, mysql, eclipselink for jpa.
In my project, if I create the tables manually in mysql, I can see those tables in the "JPA Details" view. And if I don't create any table, the eclipse IDE shows an error, "Table "trainingsession" cannot be resolved".
I am not sure what's wrong. When would JPA create these tables ? and how ?
my persistence.xml is as follows,
<?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="wompower2" transaction-type="RESOURCE_LOCAL">
<provider>org.eclipse.persistence.jpa.PersistenceProvider</provider>
<jta-data-source>trainer</jta-data-source>
<class>com.jsfcompref.trainer.entity.User</class>
<class>com.jsfcompref.trainer.entity.TrainingSession</class>
<class>com.jsfcompref.trainer.entity.Event</class>
<class>com.jsfcompref.trainer.entity.AbstractEntity</class>
<validation-mode>NONE</validation-mode>
<properties>
<property name="eclipselink.target-database" value="MySQL"/>
<property name="eclipselink.ddl-generation" value="create-tables"/>
<property name="eclipselink.ddl-generation.output-mode" value="both"/>
<property name="eclipselink.application-location" value="C:\wompower2\DDL"/>
<property name="eclipselink.create-ddl-jdbc-file-name" value="create.sql"/>
<property name="javax.persistence.jdbc.url" value="jdbc:mysql://localhost:3306/demo"></property>
<property name="javax.persistence.jdbc.user" value="user"></property>
<property name="javax.persistence.jdbc.password" value="pwd"></property>
<property name="javax.persistence.jdbc.driver" value="com.mysql.jdbc.Driver"></property>
</properties>
</persistence-unit>
</persistence>
Thank you,
Arindam.
First let me clarify that JPA is a standard spec for ORM and EclipseLink is one of the implementor of the spec (Hibernate is another example). The spec doesn't mandate the creation of the schema or tables though EclipseLink provides a mechanism to create the tables for you through configuration. Below are the two config properties controlling that
<property name="eclipselink.ddl-generation" value="create-tables" />
<property name="eclipselink.ddl-generation.output-mode" value="database" />
Go through this tutorial for more information (specifically 3.2 section)
GlassFish reads the property eclipselink.ddl-generation to decide whether it will use its own table generation functionality -- java2db. This only works during deployment and if the target is the DAS.
It doesn't matter the value of eclipselink.ddl-generation.output-mode you give, GlassFish will set it to "sql-script" if java2db is to be used (so that it can then run the scripts) or "none" if it is disabled. See glassfish3/persistence/jpa-connector/src/main/java/org/glassfish/persistence/jpa/PersistenceUnitLoader.java.
I saw "Table 'nnn' cannot be resolved" being reported after a couple of tests I made with JPA, MySQL, Eclipse.
My issue was caused by myself. I switched the data connection during my tests. But the tool - I assume I was the JPA plugin - was continuing to validate the table names against the first data connection i defined.
So, my solution was:
Open the project specific JPA properties (right click project -> JPA) and ensure that the connection settings refer to the correct database. Rebuild... that's it.
This is a bit late, but just in case anybody comes across this. You just need to run a query like an INSERT or a SELECT against the database and the tables will be created. It has worked for me before. I hope this help anybody with the same issue.
Just a persistence.xml example using eclipselink and mysql for others looking for a working solution:
<?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="java2curs" transaction-type="RESOURCE_LOCAL">
<provider>org.eclipse.persistence.jpa.PersistenceProvider</provider>
<class>db.YourClasses</class>
<properties>
<property name="javax.persistence.jdbc.url"
value="jdbc:mysql://localhost:3306/dbname"/>
<property name="javax.persistence.jdbc.user" value="dbuser"/>
<property name="javax.persistence.jdbc.password" value="dbpassword"/>
<property name="eclipselink.ddl-generation" value="create-tables" />
<property name="eclipselink.ddl-generation.output-mode" value="database" />
<property name="javax.persistence.schema-generation.database.action" value="drop-and-create"/>
</properties>
</persistence-unit>
</persistence>