JSF 1.2動態添加自定義驗證程序

Question

如果我正確理解JSF生命週期，它會在應用請求階段註冊驗證程序。 這是否意味着我無法將addValidator調用到在Process Request Events階段被調用的decode（）方法內部的Component對象句柄中？如果是這樣，是否還有其他方式根據組件的屬性值動態添加自定義驗證器？

感謝

Answer 1

我希望應該工作類似於..

public class ValidatorWrapper implements Validator { 

private DoubleRangeValidator dbRangeValidator; 
private LongRangeValidator lRangeValidator; 
private String requiredValidatorType;/*An attribute to choose the type of validator*/ 

public ValidatorWrapper(){ 
    dbRangeValidator = new DoubleRangeValidator(10.01, 20.99);lRangeValidator = new LongRangeValidator(10, 20); 
} 

@Override 
public void validate(FacesContext context, UIComponent component, 
     Object value) throws ValidatorException { 
    if("LONG".equalsIgnoreCase(requiredValidatorType)) 
     lRangeValidator.validate(context, component, value); 
    else if("DBL".equalsIgnoreCase(requiredValidatorType)) 
     dbRangeValidator.validate(context, component, value); 
} }