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Showing posts from June, 2011

Why I bought iPad1 after buying iPad2 ?

I needed a new Touch device for my 2yr old girl, though she already has an iPod Touch but she likes playing games and YouTube on my iPad 2 (bigger screen), so I thought of buying her a new touch device like an iPad. Following were my requirements and options. Requirements Touch device (bigger than iPod) with Toddler games and YouTube. Liter (Ultra Portable) and Durable (should last an year with ruff usage). Don't care for - Camera, Multitasking, Big CPU, RAM. Options Device                    Price  Weight     Pros  /  Cons                             iPad1                       349      680 g       Less expensive then others                                                                                     Transfer purchased apps from iTunes                                                           Same OS of iPad2                                                             Slower CPU, RAM iPad2                       499      601 g      Transfer purchased apps

Why companies don't launch Mobile/Touch products at same time in Asia ?

This question came recently in our daily meeting and my colleagues were explaining all the benefits of launching Mobile/Touch Products same time in US and in Asia (China, India, Middle East). These are the few points/advantages of introducing products same time in Asia. Huge Consumer market ( 600 Millions) and is as mature as US. People love/admire for great products (Apple, Android, Samsung etc) Duty/Tax free destinations (Dubai etc) Seems a very potential market for launching products same time. So why biggies hold off their product for atleast 6 months before they really enter these markets and some people might argue its because of import/export regulations and shipment on the contrary all these products are assembled in Asia and these companies have bigger footprint in these markets. People directly involved in these decisions are the right person the give us inside but here is my opinion.   Brand Building        Silicon Valley/USA is the best place to Build Brand cheaply

How to use Jpa Hibernate Lifecycle Events Feature

Consider two possibilities to understand a typical usage and its not about Validation its all about Integration.          1. You wrote a Bug Tracking Application and deployed it at your client, client has a new requirement that when a new bug is created it wants to send its information to other internal System via Web Service.    2. You wrote an Enterprise Application and a new features requires that when a new Product is added to database via JPA Hibernate its details should be sent to other departments via Web Service call. And this is where the feature kick-ins.   We need to design and implement the capability with these features Scalable (should be able to use separate threat to do its job). Simple Design and Usable. Extendable i.e. No procedural junk code. Consider following design and Code snippet where Manufacturer and Product are JPA Entities and PartnerXNotifier and PartnerYNotifier are Web Service Clients.     @EntityListeners({ EventListener. class}) @Entity publ

JPA Hibernate Lifecycle Callback Events Simple Explanation

Typical Entity Life-cycle Persist   - Creating Entity for the first time. Merge    - Saving detached Entity Load      - Loading Entity from Database Delete    - Deleting Entity from Database JPA provides total of 6 Annotations for Life-Cycle Callback events. @PrePersist @PostPersist @PreUpdate @PostUpdate @PreRemove @PostLoad This is how we can use the above annotations. Solution 1 : Defining inside Entity class Any method can be annotated with one or all annotations, though they should follow these rules.  Method can have any name  No parameters  Return type of void  Method should not be final or static  No Checked exceptions should be thrown  Any annotation can be only used on one method Example Code Snippet - 1 @Entity public class Employee implements Serializable { ... @PrePersist @PostPersist @PreUpdate @PostUpdate @PreRemove @PostLoad public void updateDate() {     // this method will executed on all the lifecycle events. } } Soluti