The class must provide suitable implementation of the equals

[butterflee]

When deploy some entity bean(BMP), it displays following messages:

Bean : SomeEntityBean
Section: 12.2.12
Warning: The class must provide suitable implementation of the equals(Object other) method.

what does this mean and its impact?
many thanks

[adrian.brock]

From the verifier...

cls = classloader.loadClass(entity.getPrimaryKeyClass());

Object one = cls.newInstance();
Object two = cls.newInstance();

try
{
if( !one.equals(two) )
{
if( cmp )
{
fireSpecViolationEvent( entity, new Section("10.6.13.c"));
}
else
{
fireSpecViolationEvent( entity, new Section("12.2.12.c"));
}
status = false;
}
}
catch(NullPointerException e)
{
// That's OK - the implementor expected the fields to
// have values
}

From the spec ...

The class must provide suitable implementation of the hashCode() and equals(Object
other) methods to simplify the management of the primary keys by client code.

Regards,
Adrian

[minamoto]

As section 12.2.12 of the ejb 2.0 spec says, it's about the primary key.
This message may mean that the verifier cannot find the primary key class in the ejb-jar.xml.

Miki