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Monthly Archives: March 2013

when to use ejb

March 29, 2013

links: – http://stackoverflow.com/questions/13487987/where-to-use-ejb-3-1-and-cdi summary: – ejb >= cdi – Default to POJOs, then CDI, then EJB – use CDI cases: …

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spring transaction, CMT

March 29, 2013

links: – https://docs.google.com/viewer?a=v&q=cache:pbI9dp4CB4wJ:java9s.com/wp-content/uploads/2012/06/Spring-Transactions.ppt+bmt+cmt+in+spring&hl=en&gl=us&pid=bl&srcid=ADGEESiWHmG93nXhIa12PdJor-s7HmVfCTEV8BKIW6mvWljy2kH-dxYock_0lKckhUg1TL2UKTkVKKTVx0aGu-BLrNjzOxBJC1505ToRB0T-5xqYBmmzoog63lEayd9Fvb9bAbggpObZ&sig=AHIEtbTq4Db4BtA4Bc2Tn4ADfBr-vfpFuw (Srinivas Reddy http://www.java9s.com) – http://mallikarjungunda.blogspot.com/2012/11/spring-interview-questions.html summary: – CMT needs an application server and tied to JTA, but …

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api vs spi

March 29, 2013

links: – http://stackoverflow.com/questions/2954372/difference-between-spi-and-api summary: – api is what application sees and calls – spi is the service interface for a …

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Hibernate, session, entitymanager

March 29, 2013

links: – http://www.coderanch.com/t/218543/ORM/databases/difference-session-entitymanager (mark splitzer) – http://en.wikipedia.org/wiki/Hibernate_(Java) – http://piotrnowicki.com/2012/11/types-of-entitymanagers-application-managed-entitymanager/ – http://docs.jboss.org/hibernate/entitymanager/3.6/reference/en/html/architecture.html summary: – 2010, hibe 3.5+ supports JPA 2.0 wrapping …

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Multiple wars in a ear

March 27, 2013

links: – http://www.coderanch.com/t/446575/EJB-JEE/java/Multiple-war-ear-file summary: – separate into wars primarily for managebiltiy – but need to keep application working and don’t …

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JTA, XA, non XA

March 27, 2013

links: – http://www.theserverside.com/discussions/thread.tss?thread_id=21385 – http://en.wikipedia.org/wiki/Java_Transaction_API summary: – JTA, java transaction api, JSR 907, enables distributed transactions across multiple X/Open XA …

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JSF f:view needed?

March 27, 2013

links: – https://forums.oracle.com/forums/thread.jspa?threadID=1717581 – http://stackoverflow.com/questions/8883476/when-to-use-fview-and-fsubview-in-jsf summary: – JSF1 yes, facelet no – JSF2 unless need to modify the following: f:view …

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JSF MVC intro

March 26, 2013

links: – http://www.ibm.com/developerworks/library/j-jsf1/ – http://netbeans.org/kb/docs/javaee/ecommerce/design.html#architecture summary: – old article but good resource on JSF and MVC – control is the …

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operator= vs copy constructor

March 25, 2013

links: – http://www.learncpp.com/cpp-tutorial/911-the-copy-constructor-and-overloading-the-assignment-operator/ summary: – ‘=’ could be operation= or copy constructor

Component base vs request base

March 21, 2013

links: – http://stackoverflow.com/questions/1247627/java-component-based-vs-request-based-frameworks summary: – JSF, wicket component base (feels like an abstract level on top of request) – Spring …

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