com.indusborn.ui.validators.ConfirmValidator.java Source code

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Here is the source code for com.indusborn.ui.validators.ConfirmValidator.java

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/*
 * Copyright 2010 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.indusborn.ui.validators;

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

import org.springframework.beans.BeanWrapper;
import org.springframework.beans.BeanWrapperImpl;
import org.springframework.util.ObjectUtils;
import org.springframework.util.StringUtils;

/**
 * Validates @Confirm fields.
 * @author Keith Donald
 */
public final class ConfirmValidator implements ConstraintValidator<Confirm, Object> {

    private String field;

    private String matches;

    private String message;

    public void initialize(Confirm constraintAnnotation) {
        field = constraintAnnotation.field();
        matches = constraintAnnotation.matches();
        if (matches == null || matches.length() == 0) {
            matches = "confirm" + StringUtils.capitalize(field);
        }
        message = constraintAnnotation.message();
    }

    public boolean isValid(Object value, ConstraintValidatorContext context) {
        BeanWrapper beanWrapper = new BeanWrapperImpl(value);
        Object fieldValue = beanWrapper.getPropertyValue(field);
        Object matchesValue = beanWrapper.getPropertyValue(matches);
        boolean matched = ObjectUtils.nullSafeEquals(fieldValue, matchesValue);
        if (matched) {
            return true;
        } else {
            context.disableDefaultConstraintViolation();
            context.buildConstraintViolationWithTemplate(message).addNode(field).addConstraintViolation();
            return false;
        }
    }

}