TwoFieldsEqualsValidator.java

/**
 * Most of the code in the Qalingo project is copyrighted Hoteia and licensed
 * under the Apache License Version 2.0 (release version 0.8.0)
 *         http://www.apache.org/licenses/LICENSE-2.0
 *
 *                   Copyright (c) Hoteia, 2012-2014
 * http://www.hoteia.com - http://twitter.com/hoteia - contact@hoteia.com
 *
 */
package org.hoteia.qalingo.core.web.validation.contraint;

import javax.validation.ConstraintValidator;
import javax.validation.ConstraintValidatorContext;

import org.hoteia.qalingo.core.web.validation.annotation.TwoFieldsEquals;
import org.hoteia.qalingo.core.web.validation.annotation.TwoFieldsLink;

public class TwoFieldsEqualsValidator implements ConstraintValidator<TwoFieldsEquals, TwoFieldsLink<? extends Object>> {
    
    private String[] highlightFieldNames;

    @Override
    public void initialize(TwoFieldsEquals constraintAnnotation) {
        this.highlightFieldNames = constraintAnnotation.highlightFieldNames();
    }

    @Override
    public boolean isValid(TwoFieldsLink<? extends Object> value, ConstraintValidatorContext ctx) {
        if (value.getField() == null && value.getField2() == null)
            return true;
        if (value.getField() == null)
            return false;
        boolean isValid = value.getField().equals(value.getField2());
        if (!isValid) {
            ctx.disableDefaultConstraintViolation();
            String template = ctx.getDefaultConstraintMessageTemplate();
            for (String highlightFieldName : highlightFieldNames) {
                ctx.buildConstraintViolationWithTemplate(template).addNode(highlightFieldName).addConstraintViolation();
            }
        }
        return isValid;
    }

}