休眠条件-从两个表中获取结果而没有任何关联

Question

I have been trying hard to implement a functionality of Search using Hibernate criteria. The requirement is bit vague. User could enter any text/word in the search field, the search has to be made through multiple tables which doesn't have any association between each other.

following are the two entity classes.

Table A (EntityClassA.java)
Table B (EntityClassB.java)

if a user enter "anycharecter" that should be searched in those two tables and should return fetched list(s) matching the entered character(s). Also I want to store results from table A to List and result from Table B to List .

I am not sure how this can achieved using hibernate criteria.

I could only manage to write this for one table.

public List<EntityClassAVo> search((string keywords){

List<EntityClassAVo> outputList = new ArrayList<EntityClassVo>();

Criteria criteria = etSessionFactory().getCurrentSession().createCriteria(EntityClassA.class);
//applying restriction - as I need to search entered string in all columns. 
criteria.add(Restrictions.ilike("id", keywords, MatchMode.ANYWHERE));
criteria.add(Restrictions.ilike("name", keywords, MatchMode.ANYWHERE));
criteria.add(Restrictions.ilike("age", keywords, MatchMode.ANYWHERE));
outputList = criteria.list();
return outputList;
}

Question

1) if its possible, How to write criteria for EntityClassB.java in the same "search" method?

2) if question 1 is possible, how to store results fetched from EntityClassA in one object and EntityClassB in another object?

3) If the above is not simple possible, i am probably going to ask to change the design ( only if, If i have a strong reason). - I am thinking of putting a intermediate table (Table X) between (Table A) and (Table B).

[EDITED] 4) There is a scenario, where user wants to search results from either of 1 table or both. How we are going to check this condition?

Please help me to crack this thing.

Answer 1

Why can't you simply write the same criteria for EntityClassB?

Criteria criteriaA = etSessionFactory().getCurrentSession().
            createCriteria(EntityClassA.class);
criteriaA.add(Restrictions.ilike("id", keywords, MatchMode.ANYWHERE));
criteriaA.add(Restrictions.ilike("name", keywords, MatchMode.ANYWHERE));
criteriaA.add(Restrictions.ilike("age", keywords, MatchMode.ANYWHERE));

Criteria criteriaB = etSessionFactory().getCurrentSession().
            createCriteria(EntityClassB.class);
criteriaB.add(Restrictions.ilike("smth", keywords, MatchMode.ANYWHERE));
criteriaB.add(Restrictions.ilike("rows", keywords, MatchMode.ANYWHERE));
criteriaB.add(Restrictions.ilike("here", keywords, MatchMode.ANYWHERE));

and then use, for example, Map: Entity -> List to return results

map.put(EntityClassA.class, criteriaA.list());
map.put(EntityClassB.class, criteriaB.list());
return map;