MaxValidatorForNumber.java

/*
 * Copyright (c) 2015. David Sowerby
 *
 * 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 uk.q3c.krail.core.validation;

import javax.validation.ConstraintValidator;
import javax.validation.ConstraintValidatorContext;
import java.math.BigDecimal;
import java.math.BigInteger;

/**
 * Created by David Sowerby on 05/02/15.
 */
public class MaxValidatorForNumber implements ConstraintValidator<Max, Number> {
    private long max;

    public MaxValidatorForNumber() {
    }

    public void initialize(Max annotation) {
        this.max = annotation.value();
    }

    public boolean isValid(Number value, ConstraintValidatorContext context) {
        return value == null ? true : (value instanceof BigDecimal ? ((BigDecimal) value).compareTo(BigDecimal
                .valueOf(this.max)) != 1 : (value instanceof BigInteger ? ((BigInteger) value).compareTo(BigInteger
                .valueOf(this.max)) != 1 : value.longValue() <= this.max));
    }
}