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Contents contributed and discussions participated by kuni katsuya

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kuni katsuya

JBoss Developer Framework - 0 views

www.jboss.org/...get-started

javaee6 examples

shared by kuni katsuya on 24 Jul 12 - No Cached
  • jta-crash-rec Crash Recovery, JTA Uses Java Transaction API and JBoss Transactions to demonstrate recovery of a crashed transaction
  • jts-distributed-crash-rec JTS Demonstrates recovery of distributed crashed components
  • cdi-injection CDI Demonstrates the use of CDI 1.0 Injection and Qualifiers with JSF as the front-end client.
  • ...13 more annotations...
  • bean-validation JPA, Bean Validation Shows how to use Arquillian to test Bean Validation
  • ejb-security Security, EJB Shows how to use Java EE Declarative Security to Control Access to EJB 3
  • payment-cdi-event CDI Demonstrates how to use CDI 1.0 Events
  • richfaces-validation RichFaces Demonstrates RichFaces and bean validation
  • ejb-in-war JSF, WAR, EJB Packages an EJB JAR in a WAR
  • greeter EJB, JPA, JSF, JTA, CDI Demonstrates the use of CDI 1.0, JPA 2.0, JTA 1.1, EJB 3.1 and JSF 2.0
  • helloworld-mdb EJB, MDB, JMS Demonstrates the use of JMS 1.1 and EJB 3.1 Message-Driven Bean
  • helloworld-rs JAX-RS, CDI Demonstrates the use of CDI 1.0 and JAX-RS
  • kitchensink BV, EJB, JAX-RS, JPA, JPA, JSF, CDI
  • servlet-async CDI, EJB, Servlet Demonstrates CDI, plus asynchronous Servlets and EJBs
  • servlet-security Security, Servlet Demonstrates how to use Java EE declarative security to control access to Servlet 3
  • shopping-cart EJB Demonstrates a stateful session bean
  • tasks Arquillian, JPA Demonstrates testing JPA using Arquillian
kuni katsuya

How evil are Data Transfer Objects (DTOs)? : Adam Bien's Weblog - 0 views

www.adam-bien.com/...how_evil_are_actually_data

dto pattern AdamBien

shared by kuni katsuya on 24 Jul 12 - Cached
  • How evil are Data Transfer Objects (DTOs)?
  • In certain situations, they become the necessary tool or workaround to solve a particular problem
  • Some relations are probably going to be collapsed, attributes renamed and even types changed
  • ...1 more annotation...
  • It is perfect valid to introduce a dedicated DTO to adapt an incompatible domain layer
kuni katsuya

Value Object vs. Data Transfer Object (VO vs. DTO) : Adam Bien's Weblog - 0 views

www.adam-bien.com/...value_object_vs_data_transfer

dto valueobject pattern AdamBien

shared by kuni katsuya on 24 Jul 12 - Cached
kuni katsuya

CDI With Or Without EJB 3.1 : Adam Bien's Weblog - 0 views

www.adam-bien.com/...cdi_with_or_without_ejb

AdamBien javaee6 CDI ejb3.1 architecture Boundary

shared by kuni katsuya on 24 Jul 12 - No Cached
  • deploy a EJB 3.1
  • boundary
    • kuni katsuya
      kuni katsuya on 13 Sep 12
       
      see 'WHY SERVICE ISN'T A SERVICEFACADE, BUT SERVICEFACADE IS SOMETIMES A SERVICE...' @  http://www.adam-bien.com/roller/abien/entry/why_service_isn_t_a
  • and use e.g. CDI behinds behind.
kuni katsuya

Mapping JPA Entities To SQL Views - It Works Even With Derby : Adam Bien's Weblog - 0 views

www.adam-bien.com/...mapping_jpa_entities_on_view

jpa views entity

shared by kuni katsuya on 24 Jul 12 - Cached
  • Mapping JPA Entities To SQL View
  • return a different “view” to the client
  • Especially in the context of pagination, where the data is mostly retrieved for read-only purposes, database views are the easier and more efficient alternative. Instead of implementing a lot of plumbing on the “Java-side” all the work could be easily done in the database
  • ...1 more annotation...
  • There is a drawback: not all views are updatable. Whether a view is updatable or not highly depends on the complexity and particular database
kuni katsuya

12 Tips On JPA Domain Modelling - With Existing Database - Thinking In Structs Not Obje... - 0 views

www.adam-bien.com/...11_tips_on_jpa_domain

jpa best practices DomainModeling

shared by kuni katsuya on 24 Jul 12 - No Cached
  • think in structs. Try to as frictionless as possible export/generate the JPA-entities from the existing database
  • Implement a very thin facade / transaction boundary
  • @Stateless Bean (EJB 3)
  • ...10 more annotations...
  • If the JPA entities still do not look right, try to apply some JPA tricks like mapping a JPA-entity to several tables, or even map JPA-entities to DB-views, to improve the situation
  • Rename the classes into some more meaningful. The attribute, class names are in general everything but not fluent
  • Junit. Purpose: JPA mapping verification
  • Thinking In Structs Not Objects
  • 12 Tips On JPA Domain Modelling
  • - With Existing Database -
    • kuni katsuya
      kuni katsuya on 12 Oct 12
       
      strategy when constrained by baggage of *legacy database* schema, NOT for a green fields project!
  • Execute the "Unit" tests after every change
  • even better get rid of them
  • domain objects are
  • semi-objectoriented
kuni katsuya

Java Persistence/Transactions - Wikibooks, open books for an open world - 0 views

en.wikibooks.org/...Transactions

jpa transactions

shared by kuni katsuya on 20 Jul 12 - No Cached
  • JTA transactions are
  • implicitly defined through SessionBean usage/methods. In a SessionBean normally each SessionBean method invocation defines a JTA transaction.
  • JTA Transactions
  • ...10 more annotations...
  • In JEE managed mode, such as an EntityManager injected into a SessionBean, the EntityManager reference, represents a new persistence context for each transaction. This means objects read in one transaction become detached after the end of the transaction, and should no longer be used, or need to be merged into the next transaction. In managed mode, you never create or close an EntityManager.
  • Transactions
  • operations that are committed or rolled back as a single unit
  • JPA provides two mechanisms for transactions
  • JTA (Java Transaction API
  • EntityTransaction
  • all changes made to all persistent objects in the persistence context are part of the transaction.
  • Nested Transactions
  • do not support nested transactions
  • JPA and JTA
kuni katsuya

JBoss AS7 Deployment Plugin - Deploy/Undeploy Examples - 0 views

docs.jboss.org/...deployment-example.html

jbossas7 maven plugin deployment examples

shared by kuni katsuya on 20 Jul 12 - No Cached
  • Deploying your application
  • plugin goals deploy, undeploy, and redeploy
  • <plugin> <groupId>org.jboss.as.plugins</groupId> <artifactId>jboss-as-maven-plugin</artifactId> <version>7.1.1.Final</version> </plugin>
  • ...15 more annotations...
  • file listed under the filename parameter can be deployed to the server using the deploy goal
  • deploy
  • redeploy
  • undeploy
  • <phase>install</phase>
  • <goal>deploy</goal>
  • Deploying other artifacts
  • possible to deploy other artifacts that are not related to your deployment, e.g. database drivers:
  • <phase>install</phase>
  • <goal>deploy-artifact</goal>
  • <configuration> <groupId>postgresql</groupId> <artifactId>postgresql</artifactId> <name>postgresql.jar</name> </configuration>
  • artifact must be already listed as a dependency in the projects pom.xml.
  • Deploying your application in domain mode.
  • add the domain tag as well as specify at least one server group.
  • <domain> <server-groups> <server-group>main-server-group</server-group> </server-groups> </domain>
kuni katsuya

15 Tips on JPA Rich Domain Modelling - Thinking In Objects - Not Mappings [For Greenfie... - 0 views

www.adam-bien.com/...10_tips_on_jpa_rich

jpa best practices DomainModeling

shared by kuni katsuya on 20 Jul 12 - No Cached
  • [For Greenfields]
  • Try to identify concepts and abstractions from the target domain. Use them as candidates for entities.
  • Do not obfuscate them with additional technical naming conventions like XYZEntity or "BOs".
  • ...10 more annotations...
  • Write unit tests
  • without involving the EntityManager
  • - Thinking In Objects
  • JPA Rich Domain Modelling
    • kuni katsuya
      kuni katsuya on 12 Oct 12
       
      strategy to use when less or unconstrained by legacy db schema baggage. ie. the *proper* and *ideal* way to model domain classes... using oo, not dumb structs!  :)
  • Build objects, not structs
  • Think about builders
  • Let the tool (JPA-provider) generate the DDL
    • kuni katsuya
      kuni katsuya on 12 Oct 12
       
      generated ddl can be optimized by hand if required
    • kuni katsuya
      kuni katsuya on 12 Oct 12
       
      eg. see step 12 below
  • Provide a lean facade/service layer
  • only contain crosscutting concerns
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