If mine persistence.xml file like this:
<?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="jpa">
<mapping-file>jpaOrm/*.xml</mapping-file>
</persistence-unit>
</persistence>
Can spring-data-jpa load all the XML-terminated files in the jpaOrm folder?
I don't think so, but I guess you tried and already found out that it doesn't work? The reason is that the mapping files are looked up by using ClassLoader#getResource() where the mapping file path is passed in. It does that because the class path is not scannable by default i.e. you can ask for elements on the class path that match a pattern. It can be done of course, but that would hurt performance as class path scanning is one of the most expensive operations.
Related
I've tried to declare converter in my orm.xml file:
orm-pg.xml:
<?xml version="1.0" encoding="UTF-8"?>
<entity-mappings xmlns="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/orm
http://java.sun.com/xml/ns/persistence/orm_2_1.xsd"
version="2.1">
<converter class="com.example.PgUuidConverter" auto-apply="true"/>
</entity-mappings>
persistence.xml :
<?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="jpa" transaction-type="JTA">
<provider>org.eclipse.persistence.jpa.PersistenceProvider</provider>
<jta-data-source>osgi:service/javax.sql.DataSource/(osgi.jndi.service.name=postgres-ds)</jta-data-source>
<mapping-file>META-INF/orm-pg.xml</mapping-file>
</persistence-unit>
</persistence>
Because the converter was not registered, I've added for debug another mapping-file:
<mapping-file>META-INF/orm-pg2.xml</mapping-file>
This file doesn't exist. To my surprise, the persistence unit has started without even the slightest warning in logs.
Now I'm confused because I have no idea if my converter was not registered because the orm.xml is wrong or because it was simply not loaded.
How can I debug if the mapping-file was loaded succesfully or not? Why the missing files that are referenced are ignored?
I'm deploying in Karaf Container using Aries JPA 2.5.0
I'm trying to create a layered web proyect with an EAR. I divided the Entities from the DataAccess in order to only allow DataAccess to be called by BusinessLogic.
I'm actually getting this exception:
Object: co.edu.icesi.i2trading.entities.Statetype#21397ba0 is not a known entity type.
And I found here that I need to create a persistence.xml in the EAR, but I can't really understand how.
Sharing a persistence unit across components in a .ear file
I tried placing the XML file in the Configuration Files:
And referencing the jar with <jar-files> in the persistence.xml;
<?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="I2TradingDataAccessPU" transaction-type="JTA">
<provider>org.eclipse.persistence.jpa.PersistenceProvider</provider>
<jta-data-source>jdbc/I2DataSource</jta-data-source>
<jar-file>../I2TradingEntities.jar</jar-file>
<jar-file>../../I2TradingEntities.jar</jar-file>
<shared-cache-mode>NONE</shared-cache-mode>
<properties>
<property name="eclipselink.target-server" value="None"/>
<!-- <property name="eclipselink.logging.level" value="ALL"/> -->
<property name="eclipselink.logging.level" value="WARNING"/>
</properties>
</persistence-unit>
</persistence>
With no success. Any idea why? I'm very new to Web Developing and this is getting to my nerves.
I'm also getting this WARNING in the persistence.xml's DESIGN tab:
I believe that the instruction jar-file interprets any path from the file that holds the persistence.xml... So, your configuration specifies that the Entities JAR are siblings of your EAR file.
The best (and easy) solution for your problem is to put the given persistence.xmlat the META-INF folder of your I2TradingEntities.jar and remove the <jar-file> instructions from it ... This will instruct the Application Server to create a PersistenceContext called "I2TradingDataAccessPU" and to detect any #Entity Class contained in that JAR.
I have created a Hibernate / JPA project and I'd like to create entities from tables.
While the tool works like a charm selecting a pure Hibernate configuration, in the JPA mode it does not work, claiming the absence of the persistence unit
As shown in the following photo, the persistence unit is located in the folder /src/main/resources/META-INF
This is the code of persistence.xml file:
<?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="socialsports" transaction-type="JTA">
<provider>org.hibernate.ejb.HibernatePersistenceProvider</provider>
<jta-data-source>jdbc/LiveDataSource</jta-data-source>
</persistence-unit>
</persistence>
This is the result of my attempt to run Hibernate tools to generate entities:
Since it only doesn't work in JPA mode, the use of the deprecated org.hibernate.ejb.HibernatePersistenceProvider could be a problem. Try org.hibernate.jpa.HibernatePersistenceProvider instead.
I am getting an error when I try to do a clean/compile/install for one of my modules.
[ERROR] Failed to execute goal org.codehaus.mojo:hibernate3-maven-plugin:3.0:run
(generate-drop-ddl) on project baseImpl: There was an error creating the AntRun task.
An Ant BuildException has occured: Problems in creating a configuration for JPA.
Have you remembered to add hibernate EntityManager jars to the classpath ?:
InvocationTargetException: Invalid persistence.xml.
[ERROR] Error parsing XML (line-1 : column -1): cvc-complex-type.2.4.d:
Invalid content was found starting with element 'class'.
No child element is expected at this point.
I have another module that compiles/installs fine, and the only difference is that it references different classes, so I can't figure out what's wrong with my persistence.xml, or if that is even the problem.
<?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="appPersistenceUnit">
<provider>org.hibernate.ejb.HibernatePersistence</provider>
<class>base.bo.Address</class>
<class>base.bo.Club</class>
<class>base.bo.Team</class>
<exclude-unlisted-classes>true</exclude-unlisted-classes>
</persistence-unit>
</persistence>
Apparently it wasn't the persistence.xml. I started my pom file from scratch, redid the clean/compile/install and it works. Go figure.
I have a question regarding the class integration in the persistence xml.
Is something like this possible?
<?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="ranea">
<class>com.dal.pojo.*</class>
</persistence-unit>
</persistence>
I know that this does not work....but I have a rather big database structure and I would appreciate an answere how to include my pojo classes in the persistence unit easily.
If you're using Eclipse, you can right click on persistence and use "synchronize class list".