private void setEvaluatableRecursive(TableFilter f) {
for (; f != null; f = f.getJoin()) {
f.setEvaluatable(f, true);
if (condition != null) {
condition.setEvaluatable(f, true);
}
TableFilter n = f.getNestedJoin();
if (n != null) {
setEvaluatableRecursive(n);
}
Expression on = f.getJoinCondition();
if (on != null) {
if (!on.isEverything(ExpressionVisitor.EVALUATABLE_VISITOR)) {
if (session.getDatabase().getSettings().nestedJoins) {
// need to check that all added are bound to a table
on = on.optimize(session);
if (!f.isJoinOuter() && !f.isJoinOuterIndirect()) {
f.removeJoinCondition();
addCondition(on);
}
} else {
if (f.isJoinOuter()) {
// this will check if all columns exist - it may or may not throw an exception
on = on.optimize(session);
// it is not supported even if the columns exist
throw DbException.get(ErrorCode.UNSUPPORTED_OUTER_JOIN_CONDITION_1, on.getSQL());
}
f.removeJoinCondition();
// need to check that all added are bound to a table
on = on.optimize(session);
addCondition(on);
}
}
}
on = f.getFilterCondition();
if (on != null) {
if (!on.isEverything(ExpressionVisitor.EVALUATABLE_VISITOR)) {
f.removeFilterCondition();
addCondition(on);
}
}
// this is only important for subqueries, so they know
// the result columns are evaluatable
for (Expression e : expressions) {
e.setEvaluatable(f, true);
}
}
}
