i have a dropdown field named ContactTypeName which have the values like phone, email etc and an input field named Contact i want to validate the input field for valid email address if the dropdown value Email is selected...
i have the following bean
@FieldMatch.List({
@FieldMatch(first = "contactDetail", second = "contectTypeName", message = "Please Enter a valid email address")
})
public class Contact {
private int contactId = 0;
@NotNull(message="Please Select a Contact Type")
private Integer contectTypeId;
private String contectTypeName;
@NotNull(message="Please Specify Contact Details")
private String contactDetail;
}
im trying to create a custom constraint which will validate the contactDetail field against an email regex if the contactTypeName field will have the value Email
i have the following code for the custom constraint
@Target({TYPE, ANNOTATION_TYPE,METHOD, FIELD})
@Retention(RUNTIME)
@Constraint(validatedBy = FieldMatchValidator.class)
@Documented
public @interface FieldMatch
{
String message() default "{constraints.fieldmatch}";
Class<?>[] groups() default {};
Class<? extends Payload>[] payload() default {};
/**
* @return The first field
*/
String first();
/**
* @return The second field
*/
String second();
/**
* Defines several <code>@FieldMatch</code> annotations on the same element
*
* @see FieldMatch
*/
@Target({TYPE, ANNOTATION_TYPE})
@Retention(RUNTIME)
@Documented
@interface List
{
FieldMatch[] value();
}
}
and the validator like
public class FieldMatchValidator implements ConstraintValidator<FieldMatch, Object>
{
private String firstFieldName;
private String secondFieldName;
private Pattern pattern;
private Matcher matcher;
private static final String EMAIL_PATTERN =
"^[_A-Za-z0-9-\\+]+(\\.[_A-Za-z0-9-]+)*@"
+ "[A-Za-z0-9-]+(\\.[A-Za-z0-9]+)*(\\.[A-Za-z]{2,})$";
@Override
public void initialize(final FieldMatch constraintAnnotation)
{
firstFieldName = constraintAnnotation.first();
secondFieldName = constraintAnnotation.second();
pattern = Pattern.compile(EMAIL_PATTERN);
}
@Override
public boolean isValid(final Object value, final ConstraintValidatorContext context)
{
try
{
final Object firstObj = BeanUtils.getProperty(value, firstFieldName);//email address
final Object secondObj = BeanUtils.getProperty(value, secondFieldName);//value of the contactType
System.out.println((String) firstObj);
System.out.println((String) secondObj);
if(((String) firstObj == "" || (String) firstObj == null ) && (String) secondObj != "Email"){
return true;
}else{
matcher = pattern.matcher((String) firstObj);
return matcher.matches();
}
//return firstObj == null && secondObj == null || firstObj != null && firstObj.equals(secondObj);
}
catch (final Exception ignore)
{
// ignore
}
return true;
}
}
the problem is that its not firing on the form post... im using Prime Faces model dialog in which the bean to be validated is rendered
REF: Cross field validation with Hibernate Validator (JSR 303)
looking forward to your suggestions and guidance
