JSF 2.0: verify the equality of two inputsecret fields (confirm password) without writing code?

I am using JSF 2.0 and GlassFish to develop pure Java EE 6 applications

I want to verify whether the values of the two password fields in the JSF form are equal For seam, there is a neat component < s: validateequality for = "PW1" / > I want to do the same without seam, just use JSF (or maybe a component of the JSF Library) So far, I've only seen examples of using custom validators to validate forms But I want to compare these fields without writing java code or JavaScript code Is that possible?

This is the same as seam:

...
<h:inputSecret id="passwort" value="#{personHome.instance.password}" 
    redisplay="true" required="true">
  <f:validateLength minimum="8"/>
  <a:support event="onblur" reRender="passwortField" bypassUpdates="true" ajaxSingle="true" />
</h:inputSecret>
...    
<h:inputSecret id="passwort2" required="true" redisplay="true">
  <!-- find the JSF2.0-equivalent to this tag: -->
  <s:validateEquality for="passwort"/>
  <a:support event="onblur" reRender="passwort2Field" bypassUpdates="true" ajaxSingle="true" />
</h:inputSecret>
...

Solution

Seam3 faces module will support "cross domain form validation" in the upcoming alpha3 version For the smallest code solution, this is your best choice. Please refer to this blog for howto

Alternatively, I do this programmatically by passing the ClientID of another form field to the custom validator using the F: attribute tag, and then accessing another field through the ID using the UIComponent passed to the custom validator

This is the facelet file:

<h:outputLabel value="Enter your email address" rendered="#{!cc.attrs.registration.subRegistration}" />
<h:inputText label="Email" id="textEmail1" value="#{cc.attrs.registration.email}" rendered="#{!cc.attrs.registration.subRegistration}" required="true" maxlength="128" size="35"></h:inputText>
<h:message for="textEmail1" rendered="#{!cc.attrs.registration.subRegistration}"></h:message>

<h:outputLabel value="Re-enter your email address confirmation:" rendered="#{!cc.attrs.registration.subRegistration and cc.attrs.duplicateEmailrequired}" />
<h:inputText label="Email repeat" id="textEmail2" rendered="#{!cc.attrs.registration.subRegistration and cc.attrs.duplicateEmailrequired}" maxlength="64" size="35">
    <f:validator validatorId="duplicateFieldValidator" />
    <f:attribute name="field1Id" value="#{component.parent.parent.clientId}:textEmail1" />
</h:inputText>
<h:message for="textEmail2" rendered="#{!cc.attrs.registration.subRegistration and cc.attrs.duplicateEmailrequired}"></h:message>

This is the verifier class:

package ca.triumf.mis.trevents.jsf.validator;

import javax.faces.application.FacesMessage;
import javax.faces.component.UIComponent;
import javax.faces.component.UIInput;
import javax.faces.context.FacesContext;
import javax.faces.validator.FacesValidator;
import javax.faces.validator.Validator;
import javax.faces.validator.ValidatorException;

@FacesValidator(value="duplicateFieldValidator")
public class DuplicateFieldValidator implements Validator {

@Override
public void validate(FacesContext context,UIComponent component,Object value)
        throws ValidatorException {
    // Obtain the client ID of the first field from f:attribute.
    System.out.println(component.getFamily());
    String field1Id = (String) component.getAttributes().get("field1Id");

    // Find the actual JSF component for the client ID.
    UIInput textInput = (UIInput) context.getViewRoot().findComponent(field1Id);
    if (textInput == null)
        throw new IllegalArgumentException(String.format("Unable to find component with id %s",field1Id));
    // Get its value,the entered text of the first field.
    String field1 = (String) textInput.getValue();

    // Cast the value of the entered text of the second field back to String.
    String confirm = (String) value;

    // Check if the first text is actually entered and compare it with second text.
    if (field1 != null && field1.length() != 0 && !field1.equals(confirm)) {
        throw new ValidatorException(new FacesMessage("E-mail addresses are not equal."));
    }
}
}