/*
 *  Licensed to the Apache Software Foundation (ASF) under one
 *  or more contributor license agreements.  See the NOTICE file
 *  distributed with this work for additional information
 *  regarding copyright ownership.  The ASF licenses this file
 *  to you 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
 *
 *    https://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.grails.datastore.mapping.validation;

import org.springframework.beans.factory.BeanFactory;
import org.springframework.context.MessageSource;
import org.springframework.context.support.StaticMessageSource;
import org.springframework.validation.Validator;

import org.grails.datastore.mapping.model.PersistentEntity;

/**
 * Looks up validators from Spring
 *
 * @author Graeme Rocher
 * @since 6.0
 */
public class BeanFactoryValidatorRegistry implements ValidatorRegistry {
    private final BeanFactory beanFactory;

    public BeanFactoryValidatorRegistry(BeanFactory beanFactory) {
        this.beanFactory = beanFactory;
    }

    @Override
    public Validator getValidator(PersistentEntity entity) {
        String validatorName = entity.getName() + "Validator";
        if (beanFactory.containsBean(validatorName)) {
            return beanFactory.getBean(validatorName, Validator.class);
        }
        return null;
    }

    @Override
    public MessageSource getMessageSource() {
        if (beanFactory instanceof MessageSource) {
            return (MessageSource) beanFactory;
        } else {
            return new StaticMessageSource();
        }
    }
}
