public <E> Predicate byEntitySelectors(
Root<E> root, CriteriaBuilder builder, SearchParameters sp) {
List<EntitySelector<?, ?, ?>> selectors = sp.getEntities();
List<Predicate> predicates = newArrayList();
for (EntitySelector<?, ?, ?> s : selectors) {
@SuppressWarnings("unchecked")
EntitySelector<? super E, ? extends Identifiable<?>, ?> selector =
(EntitySelector<? super E, ? extends Identifiable<?>, ?>) s;
if (selector.isNotEmpty()) {
List<Predicate> selectorPredicates = newArrayList();
for (Identifiable<?> selection : selector.getSelected()) {
selectorPredicates.add(builder.equal(getExpression(root, selector), selection.getId()));
}
if (TRUE == selector.getIncludeNull()) {
selectorPredicates.add(builder.or(builder.isNull(getExpression(root, selector))));
}
predicates.add(JpaUtil.orPredicate(builder, selectorPredicates));
} else if (selector.isIncludeNullSet()) {
if (selector.getIncludeNull()) {
predicates.add(builder.isNull(getExpression(root, selector)));
} else {
predicates.add(builder.isNotNull(getExpression(root, selector)));
}
}
}
return JpaUtil.concatPredicate(sp, builder, predicates);
}
@Override
public int hashCode() {
final int prime = 31;
int result = super.hashCode();
result = prime * result + ((owner == null) ? 0 : owner.hashCode());
return result;
}
@Override
public boolean equals(Object obj) {
if (this == obj) return true;
if (!super.equals(obj)) return false;
if (getClass() != obj.getClass()) return false;
Ownership other = (Ownership) obj;
if (owner == null) {
if (other.owner != null) return false;
} else if (!owner.equals(other.owner)) return false;
return true;
}
@Override
public int compareTo(Identifiable i) {
if (i instanceof Group) {
Group j = (Group) i;
if (this.getID().compareTo(j.getID()) < 0) {
return -1;
} else if (this.getID().compareTo(j.getID()) > 0) {
return 1;
} else {
return 0;
}
} else {
return (this.getID().compareTo(i.getID()));
}
}
/**
* @param identifiables
* @return the string representations of the wrapped identifiers
*/
public static Collection<String> toString(
final Collection<? extends Identifiable<?>> identifiables) {
final Collection<String> result = new ArrayList<String>();
for (Identifiable<?> identifier : identifiables) result.add(identifier.getID().toString());
return result;
}
public static BigInteger calculateDistance(Identifiable x, Identifiable y) {
return calculateDistance(x.getIdentifier(), y.getIdentifier());
}