java - Hibernate criteria to have multiple restrictions on the child collection -

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i have write criteria query clause match both first & last names in child collection. both names in different rows

tried this, not return when matching data present, because it's trying match both restrictions on same row.

criteria criteria = getcurrentsession().createcriteria(form.class); criteria.createalias("responses", "r"); criteria.add(restrictions                 .conjunction()                 .add(restrictions.eq("r.id", "firstname"))                 .add(restrictions.eq("r.value", getfirstname()))); criteria.add(restrictions                 .conjunction()                 .add(restrictions.eq("r.id", "lastname"))                 .add(restrictions.eq("r.value", getlastname())));

tried , gives exception org.hibernate.queryexception: duplicate association path: responses

criteria criteria = getcurrentsession().createcriteria(form.class); criteria.createalias("responses", "r1"); criteria.createalias("responses", "r2");  criteria.add(restrictions                 .conjunction()                 .add(restrictions.eq("r1.id", "firstname"))                 .add(restrictions.eq("r1.value", getfirstname()))); criteria.add(restrictions                 .conjunction()                 .add(restrictions.eq("r2.id", "lastname"))                 .add(restrictions.eq("r2.value", getlastname())));

any help?

edit

it looks description question wasn't clear. here basic requirement:

query records form class have (a child response record id=firstname , value=somename1) , (a child response record id=lastname , value=somename2)

i adding solution worked me, using subqueries. not sure if best way, solved problem

to query or :

criteria criteria = getcurrentsession().createcriteria(form.class); criteria.createalias("responses", "r"); junction conditiongroup = restrictions.disjunction(); conditiongroup.add(restrictions                 .conjunction()                 .add(restrictions.eq("r.id", "firstname"))                 .add(restrictions.eq("r.value", getfirstname()))); conditiongroup.add(restrictions                 .conjunction()                 .add(restrictions.eq("r.id", "lastname"))                 .add(restrictions.eq("r.value", getlastname()))); criteria.add(conditiongroup);

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