[jboss-user] [JBoss Seam] - Re: How to write a validator that compares two fields
I finally wrote my own findComponent method, which looks for recursively a component.
The method is like this :
public class JSFUtils {
|
| public static UIComponent findComponent(UIComponent component, String id) {
| if (component.getId().equals(id)) {
| return component;
| }
| else {
| List<UIComponent> children = component.getChildren();
| for (UIComponent myComponent : children) {
| UIComponent componentFound = findComponent(myComponent, id);
| if (componentFound != null) return componentFound;
| }
| return null;
| }
| }
|
| }
Then my validator class is like this :
public void validate(FacesContext context, UIComponent cmp, Object value)
| throws ValidatorException {
| String compareTo = (String) cmp.getAttributes().get("compareTo");
| String messageKey = (String) cmp.getAttributes().get("message");
| UIInput input = (UIInput) JSFUtils.findComponent(context.getViewRoot(), compareTo);
| String otherValue = (String) input.getValue();
| boolean error = false;
| if (value != null) {
| if (! value.equals(otherValue)) {
| error = true;
| }
| }
| else {
| if (otherValue != null) {
| error = true;
| }
| }
| if (error) {
| String msg = Messages.instance().get(messageKey);
| throw new ValidatorException(new FacesMessage(msg));
| }
| }
Hope it will help people who need this.
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