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Apache Aries Blog Sample
- 4. Community
- 5. Content
- 6. Consumers
- 7. Future
- 11. JPA integration
- 12. JTA integration
- 13. JMX
- 14. JNDI integration
- 15. Application assembly and deployment
- 20. The Samples illustrate how to run Aries applications on a standard OSGi f/w (e.g. Equinox) + Aries + dependencies (Derby DB, PaxWeb servlet container).
- 23. Run the Blog Sample EBA
- 29. </bean>
- 30. <bean id="bloggingServiceComponent" class="org.apache.aries.samples.blog.biz.BloggingServiceImpl">
- 33. </bean>
- 43. </bean>
- 46. </service>
- 49. JDBC vs JPA comparison JDBC persistence JPA persistence Number of ';' in Java source 238 86 Number of bundles used by platform 18 34
- 50. public void createAuthor(String email, Date dob, String name, String displayName, String bio) { try { Connection connection = dataSource.getConnection(); String sql = "INSERT INTO AUTHOR VALUES (?,?,?,?,?)"; PreparedStatement ppsm = connection.prepareStatement(sql); ppsm.setString(1, email); ppsm.setString(2, bio); ppsm.setString(3, displayName); if (dob != null) ppsm.setDate(4, new java.sql.Date(dob.getTime())); else ppsm.setDate(4, null); ppsm.setString(5, name); int insertRows = ppsm.executeUpdate(); ppsm.close(); connection.close(); if (insertRows != 1) throw new IllegalArgumentException("The Author " + email + " cannot be inserted."); } catch (SQLException e) { e.printStackTrace(); throw new IllegalArgumentException(e.getMessage()); } } createAuthor() method in JDBC persistence service implementation
- 51. public void createAuthor(String email, Date dob, String name, String displayName, String bio) { AuthorImpl a = new AuthorImpl(); a.setEmail(email); a.setName(name); a.setDisplayName(displayName); a.setBio(bio); a.setDob(dob); em.persist(a); } Example: createAuthor() method in JPA persistence service implementation
- 53. Aries 0.1 Release will be available soon.
- 56. JBossOSGi
- 59. declarative role-based security for blueprint components
- 60. annotation-based alternative to XML configuration
- 64. …
Notas do Editor
- Aries is one of 36 Apache Incubator projects
- The Aries JPA container context bundle provides a blueprint namespace for dependency injection of managed JPA resources. Managed persistence units (EntityManagerFactory objects) can be injected with or without a JTA Transaction Services implementation. Managed persistence contexts (EntityManager objects) are only available with a JTA Transaction Services implementation. Both managed persistence units and managed persistence contexts behave as per the JPA specification.
- NamespaceHandlers registered with a property whose value is the target nameapce: props.put(&quot;osgi.service.blueprint.namespace&quot;, &quot;http://aries.apache.org/xmlns/transactions/v1.0.0&quot;); A DI container standardizing established Spring conventions XML Blueprint definition describes component configuration and scope Optionally publish and consume components to/from OSGi service registry. Simplifies unit test outside either Java EE or OSGi r/t. The Aries BP container implementation is highly extensible: Namespace handlers supported to extend the Blueprint definitions Bean interceptors can be registered by handlers Other Aries components contribute handlers – “jpa” and “jta” handlers. Some other Aries components are implemented as Blueprint bundles themselves e.g. JPA container
- jndi-url bundle registers a JNDI ObjectFactory for “osgi:services” Contexts in the service registry (“OsgiURLContextFactory“) jndi-core bundle registers an InitialContextFactoryBuilder and ObjectFactoryBuilder with JVM. The ICFB creates a Context which looks in the SR for an ObjectFactories which can process the URI scheme. If it delegates to the osgi:services ObjectFactory then this returns the service in the SR.
- The Aries JPA container context bundle provides a blueprint namespace for dependency injection of managed JPA resources. Managed persistence units (EntityManagerFactory objects) can be injected with or without a JTA Transaction Services implementation. Managed persistence contexts (EntityManager objects) are only available with a JTA Transaction Services implementation. Both managed persistence units and managed persistence contexts behave as per the JPA specification.
- The Aries JPA container context bundle provides a blueprint namespace for dependency injection of managed JPA resources. Managed persistence units (EntityManagerFactory objects) can be injected with or without a JTA Transaction Services implementation. Managed persistence contexts (EntityManager objects) are only available with a JTA Transaction Services implementation. Both managed persistence units and managed persistence contexts behave as per the JPA specification.
- Application managed JPA Need Java code to look up the EMF service From that, create EM object Surround with try...finally, need to close. Container managed BP container – uses JPA context NS handler Injects EM object into Bean, all the Programmer does is call em.persist JTA – again BP container understands the Tx and ensures that changes to the DB are Managed as transactions
- Application managed JPA Need Java code to look up the EMF service From that, create EM object Surround with try...finally, need to close. Container managed BP container – uses JPA context NS handler Injects EM object into Bean, all the Programmer does is call em.persist JTA – again BP container understands the Tx and ensures that changes to the DB are Managed as transactions
- Provides support for “Application managed” JPA . Each persistence bundle has its standard JPA metadata located through the Meta-Persistence bundle header. JPA Container locates a JPA Provider which can service the PU and registers a Provider-created EntityManagerFactory service for each PU in each persistence bundle EMF service lifecyce follows the persistence bundle lifecycle JPA Provider gets persistence bundle classloader from PUInfo.
- Provides support for “Application managed” JPA . Each persistence bundle has its standard JPA metadata located through the Meta-Persistence bundle header. JPA Container locates a JPA Provider which can service the PU and registers a Provider-created EntityManagerFactory service for each PU in each persistence bundle EMF service lifecyce follows the persistence bundle lifecycle JPA Provider gets persistence bundle classloader from PUInfo.
- Provides support for “Application managed” JPA . Each persistence bundle has its standard JPA metadata located through the Meta-Persistence bundle header. JPA Container locates a JPA Provider which can service the PU and registers a Provider-created EntityManagerFactory service for each PU in each persistence bundle EMF service lifecyce follows the persistence bundle lifecycle JPA Provider gets persistence bundle classloader from PUInfo.