com.jaxio.celerio.configuration.validation.NotReservedJavaValidator Maven / Gradle / Ivy

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/*
 * Copyright 2015 JAXIO http://www.jaxio.com
 *
 * 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.jaxio.celerio.configuration.validation;

import com.jaxio.celerio.util.JavaKeywords;
import org.apache.commons.lang.StringUtils;

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

public class NotReservedJavaValidator implements ConstraintValidator {
    boolean allowEmpty;

    @Override
    public void initialize(NotReservedJava constraintAnnotation) {
        allowEmpty = constraintAnnotation.allowEmpty();
    }

    @Override
    public boolean isValid(String value, ConstraintValidatorContext context) {
        if (allowEmpty && (value == null || StringUtils.isEmpty(value))) {
            return true;
        }
        return !JavaKeywords.isReserved(value);
    }
}