DetachedCriteria多条件查询or，disjunction

public class Disjunction extends Junction {

protected Disjunction() {
super("or");
}

}

public class Junction implements Criterion {
...
}

String[] diffFlagArray = finder.getDiffFlags().split(",");
Disjunction disjunction = Restrictions.disjunction();
for(String flag : diffFlagArray){
if(flag.equalsIgnoreCase("portName")){
disjunction.add(Restrictions.eq("portNameDiff", '1'));
}else if(flag.equalsIgnoreCase("trustor")){
disjunction.add(Restrictions.eq("trustorDiff", '1'));
}else if(flag.equalsIgnoreCase("trustee")){
disjunction.add(Restrictions.eq("trusteeDiff", '1'));
}else if(flag.equalsIgnoreCase("custodian")){
disjunction.add(Restrictions.eq("custodianDiff", '1'));
}else if(flag.equalsIgnoreCase("investManager")){
disjunction.add(Restrictions.eq("investManagerDiff", '1'));
}else if(flag.equalsIgnoreCase("acountManager")){
disjunction.add(Restrictions.eq("acountManagerDiff", '1'));
}
}
criteria.add(disjunction);

and (
this_.c_port_name_diff=?
or this_.c_trustor_diff=?
or this_.c_trustee_diff=?
or this_.c_custodian_diff=?
or this_.c_invest_manager_diff=?
or this_.c_acount_manager_diff=?
)