sample.propertyvalidation.SamplePropertiesValidator.java Source code

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Here is the source code for sample.propertyvalidation.SamplePropertiesValidator.java

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/*
 * Copyright 2012-2015 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 sample.propertyvalidation;

import java.util.regex.Pattern;

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

public class SamplePropertiesValidator implements Validator {

    final Pattern pattern = Pattern.compile("^(?:[0-9]{1,3}\\.){3}[0-9]{1,3}$");

    @Override
    public boolean supports(Class<?> type) {
        return type == SampleProperties.class;
    }

    @Override
    public void validate(Object o, Errors errors) {
        ValidationUtils.rejectIfEmpty(errors, "host", "host.empty");
        ValidationUtils.rejectIfEmpty(errors, "port", "port.empty");
        SampleProperties properties = (SampleProperties) o;
        if (properties.getHost() != null && !this.pattern.matcher(properties.getHost()).matches()) {
            errors.rejectValue("host", "Invalid host");
        }
    }

}