/**
* Returns a String representation of this SubQueryConstraint object, suitable for forming part of
* an SQL Query.
*
* @return the String representation
*/
@Override
public String getSQLString() {
if (right.getSelect().size() != 1) {
throw (new IllegalStateException("Right must have one result column only"));
}
return left.getSQLString() + " IN (" + right.getSQLString() + ")";
}
public Any next() {
Object o = enumeration_.nextElement();
if (o == null) return null;
if (o instanceof Any) return (Any) o;
return AbstractValue.flyweightString(o.toString());
}
/**
* Compare this SubQueryConstraint with another AbstractConstraint, ignoring aliases in member
* fields and tables.
*
* <p>{@inheritDoc}
*/
@Override
public int compare(
AbstractConstraint obj,
Map<AbstractTable, AbstractTable> tableMap,
Map<AbstractTable, AbstractTable> reverseTableMap) {
if (obj instanceof SubQueryConstraint) {
SubQueryConstraint objC = (SubQueryConstraint) obj;
return (left.valueEquals(objC.left, tableMap, reverseTableMap) && right.equals(objC.right)
? EQUAL
: INDEPENDENT);
// TODO: Implement this a bit better maybe? Two unequal queries may actually have the
// same set of results. Also, a Query with less Constraints should result in a
// SubQueryConstraint that is less restrictive. Complicated.
} else if (obj instanceof NotConstraint) {
NotConstraint objNC = (NotConstraint) obj;
return alterComparisonNotObj(compare(objNC.con, tableMap, reverseTableMap));
}
return INDEPENDENT;
}
@Override
public AbstractValue sub(AbstractValue value) {
return value.subMoney(this);
}
@Override
public AbstractValue mul(AbstractValue value) {
return value.mulMoney(this);
}
@Override
public AbstractValue div(AbstractValue value) {
return value.divMoney(this);
}
@Override
public AbstractValue add(AbstractValue value) {
return value.addMoney(this);
}
@Override
public AbstractValue lt(AbstractValue value) {
return value.ltMoney(this);
}
@Override
public AbstractValue geq(AbstractValue value) {
return value.geqMoney(this);
}
/**
* Overrides Object.hashCode().
*
* @return an arbitrary integer based on the contents of the Constraint
*/
@Override
public int hashCode() {
return (3 * left.hashCode()) + (5 * right.hashCode());
}