edu.usu.sdl.openstorefront.validation.MaxValueRule.java Source code

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Here is the source code for edu.usu.sdl.openstorefront.validation.MaxValueRule.java

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/*
 * Copyright 2014 Space Dynamics Laboratory - Utah State University Research Foundation.
 *
 * 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 edu.usu.sdl.openstorefront.validation;

import edu.usu.sdl.openstorefront.common.exception.OpenStorefrontRuntimeException;
import java.lang.reflect.Field;
import java.lang.reflect.InvocationTargetException;
import java.math.BigDecimal;
import javax.validation.constraints.Max;
import org.apache.commons.beanutils.BeanUtils;

/**
 * Checks value; Allows null to be allowed.
 *
 * @author dshurtleff
 */
public class MaxValueRule extends BaseRule {

    @Override
    protected boolean validate(Field field, Object dataObject) {
        boolean valid = true;

        Max max = field.getAnnotation(Max.class);
        if (max != null) {
            try {
                String value = BeanUtils.getProperty(dataObject, field.getName());
                if (value != null) {
                    try {
                        BigDecimal numberValue = new BigDecimal(value);
                        if (numberValue.compareTo(BigDecimal.valueOf(max.value())) == 1) {
                            valid = false;
                        }
                    } catch (NumberFormatException e) {
                        throw new OpenStorefrontRuntimeException("This annotation is for numbers only",
                                "Programming error");
                    }
                }
            } catch (IllegalAccessException | InvocationTargetException | NoSuchMethodException ex) {
                throw new OpenStorefrontRuntimeException("Unexpected error occur trying to get value from object.",
                        ex);
            }
        }
        return valid;
    }

    @Override
    protected String getMessage() {
        return "Value exceeded MAX allowed";
    }

    @Override
    protected String getValidationRule(Field field) {
        StringBuilder sb = new StringBuilder();
        Max max = field.getAnnotation(Max.class);
        sb.append("Max value allowed: ").append(max.value());
        return sb.toString();
    }

}