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

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

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/*
 * Copyright 2015 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 edu.usu.sdl.openstorefront.core.annotation.Unique;
import java.lang.reflect.Field;
import java.lang.reflect.InvocationTargetException;
import org.apache.commons.beanutils.BeanUtils;

/**
 * Field valid need to be unique
 *
 * @author dshurtleff
 */
public class UniqueRule extends BaseRule {

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

        if (dataObject != null) {
            Unique unique = field.getAnnotation(Unique.class);
            if (unique != null) {
                try {
                    String value = BeanUtils.getProperty(dataObject, field.getName());
                    if (value != null) {
                        UniqueHandler handler = unique.value().newInstance();
                        valid = handler.isUnique(field, value);
                    }
                } catch (InstantiationException | IllegalAccessException | InvocationTargetException
                        | NoSuchMethodException ex) {
                    throw new OpenStorefrontRuntimeException("Unexpected error occur trying open the handler.", ex);
                }
            }
        }

        return valid;
    }

    @Override
    protected String getMessage() {
        return "Value is not unique";
    }

    @Override
    protected String getValidationRule(Field field) {
        Unique unique = field.getAnnotation(Unique.class);
        if (unique != null) {
            return "Field is required to be unique accord to handler: " + unique.value().getSimpleName();
        }
        return "Field is required to be unique accord to handler.";
    }

}