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Groovy Project with Persistence JPA

This example is developed with Groovy Lang with JPA data persistence.

Example

In this example, a person is created and consulted later.

Code sample

Entity

Create a class Person with the annotation @Entity.

In the class create property name of type String. In the class create property id of type long.

The identifier of entity Person is property id with annotation @Id.

To automatically generate the sequential add the annotation @GeneratedValue.

Unresolved directive in <stdin> - include::src/main/groovy/org/superbiz/groovy/Person.groovy[]

Persistence

In the persistence is added the entity Person with <class>org.superbiz.groovy.Person</class>

Unresolved directive in <stdin> - include::src/main/resources/META-INF/persistence.xml[]

Running example

Running the example is fairly simple. In the /tomee/examples/groovy-jpa directory run:

$ mvn clean install

Which should create output like the following:

[INFO] Running org.superbiz.groovy.GroovyJPATest
INFO - ********************************************************************************
INFO - OpenEJB http://tomee.apache.org/
INFO - Startup: Sat Sep 07 18:29:58 ECT 2019
INFO - Copyright 1999-2024 (C) Apache OpenEJB Project, All Rights Reserved.
INFO - Version: 10.0.0-M1-SNAPSHOT
INFO - Build date: 20190907
INFO - Build time: 04:10
INFO - ********************************************************************************
INFO - openejb.home = /Users/sergio/workspace/git/tomee/examples/groovy-jpa
INFO - openejb.base = /Users/sergio/workspace/git/tomee/examples/groovy-jpa
INFO - Created new singletonService org.apache.openejb.cdi.ThreadSingletonServiceImpl@71c8becc
INFO - Succeeded in installing singleton service
INFO - Cannot find the configuration file [conf/openejb.xml].  Will attempt to create one for the beans deployed.
INFO - Configuring Service(id=Default Security Service, type=SecurityService, provider-id=Default Security Service)
INFO - Configuring Service(id=Default Transaction Manager, type=TransactionManager, provider-id=Default Transaction Manager)
INFO - Using 'openejb.deployments.classpath=false'
INFO - Creating TransactionManager(id=Default Transaction Manager)
INFO - Creating SecurityService(id=Default Security Service)
INFO - Configuring enterprise application: /Users/sergio/workspace/git/tomee/examples/groovy-jpa/0db140ef-9d71-4f1a-8ddb-1d0e3feae256.war
INFO - Configuring Service(id=Default Managed Container, type=Container, provider-id=Default Managed Container)
INFO - Auto-creating a container for bean 0db140ef-9d71-4f1a-8ddb-1d0e3feae256_org.superbiz.groovy.GroovyJPATest: Container(type=MANAGED, id=Default Managed Container)
INFO - Creating Container(id=Default Managed Container)
INFO - Using directory /var/folders/3j/qhs78rln3y9bl0c279f2j13m0000gn/T for stateful session passivation
INFO - Configuring PersistenceUnit(name=groovy)
INFO - Configuring Service(id=Default Unmanaged JDBC Database, type=Resource, provider-id=Default Unmanaged JDBC Database)
INFO - Auto-creating a Resource with id 'Default Unmanaged JDBC Database' of type 'DataSource for 'groovy'.
INFO - Creating Resource(id=Default Unmanaged JDBC Database)
INFO - Adjusting PersistenceUnit groovy <non-jta-data-source> to Resource ID 'Default Unmanaged JDBC Database' from 'jdbc/groovy'
INFO - Enterprise application "/Users/sergio/workspace/git/tomee/examples/groovy-jpa/0db140ef-9d71-4f1a-8ddb-1d0e3feae256.war" loaded.
INFO - Assembling app: /Users/sergio/workspace/git/tomee/examples/groovy-jpa/0db140ef-9d71-4f1a-8ddb-1d0e3feae256.war
INFO - JAVA AGENT NOT INSTALLED. The JPA Persistence Provider requested installation of a ClassFileTransformer which requires a JavaAgent.  See http://tomee.apache.org/javaagent.html
INFO - OpenJPA dynamically loaded a validation provider.
INFO - PersistenceUnit(name=groovy, provider=org.apache.openjpa.persistence.PersistenceProviderImpl) - provider time 1142ms
INFO - Existing thread singleton service in SystemInstance(): org.apache.openejb.cdi.ThreadSingletonServiceImpl@71c8becc
INFO - Some Principal APIs could not be loaded: org.eclipse.microprofile.jwt.JsonWebToken out of org.eclipse.microprofile.jwt.JsonWebToken not found
INFO - OpenWebBeans Container is starting...
INFO - Adding OpenWebBeansPlugin : [CdiPlugin]
INFO - All injection points were validated successfully.
INFO - OpenWebBeans Container has started, it took 574 ms.
INFO - Deployed Application(path=/Users/sergio/workspace/git/tomee/examples/groovy-jpa/0db140ef-9d71-4f1a-8ddb-1d0e3feae256.war)
INFO - Starting OpenJPA 3.1.0
INFO - Using dictionary class "org.apache.openjpa.jdbc.sql.HSQLDictionary" (HSQL Database Engine 2.3.2 ,HSQL Database Engine Driver 2.3.2).
INFO - Connected to HSQL Database Engine version 2.2 using JDBC driver HSQL Database Engine Driver version 2.3.2.
INFO - Creating subclass and redefining methods for "[class org.superbiz.groovy.Person]". This means that your application will be less efficient than it would if you ran the OpenJPA enhancer.
INFO - Undeploying app: /Users/sergio/workspace/git/tomee/examples/groovy-jpa/0db140ef-9d71-4f1a-8ddb-1d0e3feae256.war
[INFO] Tests run: 1, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 13.304 s - in org.superbiz.groovy.GroovyJPATest
INFO - Destroying container system
INFO - Closing DataSource: Default Unmanaged JDBC Database
[INFO]
[INFO] Results:
[INFO]
[INFO] Tests run: 1, Failures: 0, Errors: 0, Skipped: 0

APIs Used