EJB Question?

[Raja Mani]

Is ejbPassivate() invoked by the container when ejbRemove() is invoked?
� a. true
� b. false

Any of you please get me the right answer?

[Mat Williams]

Hi,

I do not believe that ejbPassivate is called prior to ejbRemove, or after it is called. I have not found anything in the spec that says ejbPassivate is called either, for any type of bean (Stateful, Statless, Entity, CMT, BMT, BMP, or CMP). I dont think it would make sense for the container to invoke ejbPassivate before or after ejbRemove either - certainly not after!! So I think the answer should be False (B).

Please feel free to correct me if I am wrong, as I am not an expert on EJB.

Mat

[Cameron Wallace McKenzie]

Write a BMP, like the following one, and test the remove method.

I actualy use this BMP in a BMP Tutorial to demonstrate how the various lifecylce methods work, but I don't think I called the ejbRemove method in the demo. Do it yourself, and prove the answer to yourself. Don't rely on someone else's opinion.

Cheers,

-Cameron McKenzie

package com.examscam.ejb;
/**
* Bean implementation class for Enterprise Bean: PersonBMP
*/
public class PersonBMPBean implements javax.ejb.EntityBean {
 
String name;
int age;
 

/**
* @return Returns the age.
*/
public int getAge() {
System.out.println("In getAge");
return age;
}
/**
* @param age The age to set.
*/
public void setAge(int age) {
System.out.println("In setAge");
this.age = age;
}
/**
* @return Returns the name.
*/
public String getName() {
System.out.println("In getName");
return name;
}
/**
* @param name The name to set.
*/
public void setName(String name) {
System.out.println("In setName");
this.name = name;
}
private javax.ejb.EntityContext myEntityCtx;
/**
* ejbActivate
*/
public void ejbActivate() {
System.out.println("In ejbActivate");
}
/**
* ejbLoad
*/
public void ejbLoad() {
System.out.println("In ejbLoad");
}
/**
* ejbPassivate
*/
public void ejbPassivate() {
System.out.println("In ejbPassivate");
}
/**
* ejbRemove
*/
public void ejbRemove() throws javax.ejb.RemoveException {
System.out.println("In ejbRemove");
}
/**
* ejbStore
*/
public void ejbStore() {
System.out.println("In ejbStore");
}
/**
* getEntityContext
*/
public javax.ejb.EntityContext getEntityContext() {
System.out.println("In getEntityContext");
return myEntityCtx;
}
/**
* setEntityContext
*/
public void setEntityContext(javax.ejb.EntityContext ctx) {
System.out.println("In setEntityContext");
myEntityCtx = ctx;
}
/**
* unsetEntityContext
*/
public void unsetEntityContext() {
System.out.println("In unsetEntityContext");
myEntityCtx = null;
}
/**
* ejbCreate
*/
public com.examscam.ejb.PersonBMPKey ejbCreate()
 
throws javax.ejb.CreateException {
System.out.println("In ejbCreate");
return null;
}
/**
* ejbPostCreate
*/
public void ejbPostCreate() throws javax.ejb.CreateException {
System.out.println("In ejbPostCreate");
}
/**
* ejbFindByPrimaryKey
*/
public com.examscam.ejb.PersonBMPKey ejbFindByPrimaryKey(
com.examscam.ejb.PersonBMPKey primaryKey)
throws javax.ejb.FinderException {
System.out.println("In findBy");
return null;
}
}    

[Lars Behnke]

The Method ejbPassivate() is *NOT* invoked by the container when ejbRemove() is invoked (At least this is how BEA Weblogic behaves).

Hence, answer b is correct.

[Eddy Lee Sin Ti]

Hi,

Check this out, it might be helpful.

JavaRanch