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

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Here is the source code for edu.usu.sdl.openstorefront.validation.PatternRule.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 javax.validation.constraints.Pattern;
import org.apache.commons.beanutils.BeanUtils;

/**
 *
 * @author dshurtleff
 */
public class PatternRule extends BaseRule {

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

        Pattern pattern = field.getAnnotation(Pattern.class);
        if (pattern != null) {
            try {
                String value = BeanUtils.getProperty(dataObject, field.getName());
                //null values are concerned a match that way optional field should work.
                if (value != null) {
                    valid = value.matches(pattern.regexp());
                }
            } 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 must follow pattern";
    }

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

}