EJB - What is the difference between ejbstore and ejbload?

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What is the difference between ejbstore and ejbload?

Total Answers and Comments: 4

Last Update: July 03, 2009 Asked by: jabi

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Submitted by: VenkitaKrishnan

These 2 callback methods are avaliable in the EntityBean Interface and will be used by the container to load the data from the Database into the Bean (ejbLoad) and from the bean to the Database (ejbStore).

We have to manually implemented these methods if we are using BMP (Bean Managed Persistence), although no one is using it in that fashion.

From EJB Specs 2.1, CMP (Container Managed Persistence) has become much easier and these 2 call back methods will be implemented by the container for you.

Above answer was rated as good by the following members:
geeky920

November 19, 2007 06:37:41

Amol Patil

RE: What is the difference between ejbstore and ejbloa...

ejbLoad is called to notify the entity bean that its state has just been refreshed from the database.

ejbStore is called to notify the entity bean that its state is about to be flushed to the database.

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April 17, 2009 07:49:31

satin40

Member Since: July 2007 Contribution: 3

RE: What is the difference between ejbstore and ejbload?

sjbStore update the persistent storate with the updated values of the bean while ejbLoad get the values from the database and set the properties of a bean. Container calls them intermediately to keep the database consistent.

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April 20, 2009 01:22:30

VenkitaKrishnan

Member Since: April 2007 Contribution: 7

RE: What is the difference between ejbstore and ejbload?

These 2 callback methods are avaliable in the EntityBean Interface and will be used by the container to load the data from the Database into the Bean (ejbLoad) and from the bean to the Database (ejbStore).

We have to manually implemented these methods if we are using BMP (Bean Managed Persistence) although no one is using it in that fashion.

From EJB Specs 2.1 CMP (Container Managed Persistence) has become much easier and these 2 call back methods will be implemented by the container for you.

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Overall Rating: +1

July 03, 2009 05:21:33

AkshataShriyan

Member Since: July 2009 Contribution: 4

RE: What is the difference between ejbstore and ejbload?

They are call back methods.

They are used to notify ejb beans of the state.

Called at the boundaries of the transaction.

Whenever tx.begin() ejbload() is called to notify beans of data being refreshed

Whenever tx.commit ejbstore() is called to notify beans that data is being persisted

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