com.expedia.weather.model.validator.ForecastFormValidator.java Source code

Introduction

Here is the source code for com.expedia.weather.model.validator.ForecastFormValidator.java

Source

/*
 * Copyright 2002-2013 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.expedia.weather.model.validator;

import java.util.regex.Pattern;

import org.springframework.validation.Errors;
import org.springframework.validation.ValidationUtils;
import org.springframework.validation.Validator;

import com.expedia.weather.model.ForecastForm;

/**
 * {@code Validator} for {@code ForecastForm}.
 *
 * @author Fabien Lauf
 */
public class ForecastFormValidator implements Validator {

    public static final String US_ZIPCODE_REGEXP = "[0-9]{5}";

    public static final String ERR_CODE_ZIP_NOTFOUND = "zip.notfound";
    public static final String ERR_CODE_ZIP_INVALID = "zip.invalid";

    @Override
    public boolean supports(Class<?> clazz) {
        return ForecastForm.class.isAssignableFrom(clazz);
    }

    @Override
    public void validate(Object target, Errors errors) {
        ValidationUtils.rejectIfEmptyOrWhitespace(errors, "zip", ForecastFormValidator.ERR_CODE_ZIP_INVALID,
                ForecastFormValidator.ERR_CODE_ZIP_NOTFOUND);
        if (!errors.hasErrors()) {
            ForecastForm form = (ForecastForm) target;
            if (!Pattern.matches(ForecastFormValidator.US_ZIPCODE_REGEXP, form.getZip())) {
                errors.rejectValue("zip", ForecastFormValidator.ERR_CODE_ZIP_INVALID,
                        ForecastFormValidator.ERR_CODE_ZIP_INVALID);
            }
        }
    }

}