CronExpressionValidator.java

/*
 * Copyright 2024 Global Crop Diversity Trust
 *
 * 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 org.gringlobal.custom.validation.javax;

import org.springframework.scheduling.support.CronExpression;

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

public class CronExpressionValidator implements ConstraintValidator<CronExpressionValidation, String> {
    
    @Override
    public boolean isValid(String value, ConstraintValidatorContext context) {
        if (value == null) {
            return true;
        }
        return CronExpression.isValidExpression(value);
    }
}