Examples with VisitorResult com.servoy.j2db.util.visitor.IVisitor.VisitorResult used on opensource projects

Example 1 with VisitorResult

use of com.servoy.j2db.util.visitor.IVisitor.VisitorResult in project servoy-client by Servoy.

the class AbstractBaseQuery method acceptVisitor.

public static <T> T acceptVisitor(T o, IVisitor visitor) {
    if (o == null) {
        return null;
    }
    Object v = visitor.visit(o);
    T o2;
    if (v instanceof VisitorResult) {
        o2 = (T) ((VisitorResult) v).object;
        if (!((VisitorResult) v).continueTraversal) {
            return o2;
        }
    } else {
        o2 = (T) v;
        if (o2 != o) {
            // the visitor returned something else then the input, visting stops.
            return o2;
        }
    }
    if (o2 instanceof List) {
        for (int i = 0; i < ((List) o2).size(); i++) {
            ((List<Object>) o2).set(i, acceptVisitor(((List) o2).get(i), visitor));
        }
    } else if (o2 instanceof Map) {
        Iterator<Map.Entry> it = ((Map) o2).entrySet().iterator();
        while (it.hasNext()) {
            Map.Entry entry = it.next();
            entry.setValue(acceptVisitor(entry.getValue(), visitor));
        }
    } else if (o2 instanceof Object[]) {
        for (int i = 0; i < ((Object[]) o2).length; i++) {
            ((Object[]) o2)[i] = acceptVisitor(((Object[]) o2)[i], visitor);
        }
    } else if (o2 instanceof Pair) {
        Pair pair = (Pair) o2;
        pair.setLeft(acceptVisitor(pair.getLeft(), visitor));
        pair.setRight(acceptVisitor(pair.getRight(), visitor));
    } else if (o2 instanceof IVisitable) {
        ((IVisitable) o2).acceptVisitor(visitor);
    }
    return o2;
}