how implement a find by Example usefull also for id

dilembo · **Joined:** Thu Jan 20, 2005 1:45 pm **Posts:** 49

hi all
I noticed by hibernate reference that it's impossible getting pojo by example when in the example is specified just the id.
I implemented this (does not work of course by id):

public Collection findByExample(Object example) throws PersistenceException {
log.info("findByExample...");
Collection collection;
try {

Criteria crit = HibernateSessionFactory.getSession()
.createCriteria(mappedClass);
collection = crit.add(Example.create(example).enableLike(MatchMode.EXACT)).list();

} catch (HibernateException ex) {
throw new PersistenceException(ex);
}
return collection;
}

I need a function that does the find by example also when in the example is specified just the id!

emmanuel · **Posted:** Mon Jun 18, 2007 11:10 am

Code:

if(example.id != null) {
   //query by id
}
else {
  //your existing thing
}

dilembo · **Joined:** Thu Jan 20, 2005 1:45 pm **Posts:** 49

are u sure example.id exists?

dilembo · **Joined:** Thu Jan 20, 2005 1:45 pm **Posts:** 49

emmanuel wrote:

Code:

if(example.id != null) {
   //query by id
}
else {
  //your existing thing
}

does not exist Example.id !

emmanuel · **Posted:** Mon Jun 18, 2007 6:20 pm

example is your the object in your method signature

dilembo · **Joined:** Thu Jan 20, 2005 1:45 pm **Posts:** 49

emmanuel wrote:

example is your the object in your method signature

But i need a generic function for a generic object.
That's my problem.Did u see my function? I pass it a generic object and i need to recognize the id.
Any idea?
Regards

emmanuel · **Posted:** Tue Jun 19, 2007 5:26 pm

You can look for the class medatada API in the SessionFactory

irs86 · **Joined:** Fri May 14, 2010 5:51 pm **Posts:** 8

Hi all,

Plz just want to know if this is resolved in recent versions of Hibernate.

Irshad