spring BeanFactoryConnectionFactoryLookup 源码
spring BeanFactoryConnectionFactoryLookup 代码
文件路径：/spring-r2dbc/src/main/java/org/springframework/r2dbc/connection/lookup/BeanFactoryConnectionFactoryLookup.java
/*
* Copyright 2002-2020 the original author or authors.
*
* 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
*
* 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.springframework.r2dbc.connection.lookup;
import io.r2dbc.spi.ConnectionFactory;
import org.springframework.beans.BeansException;
import org.springframework.beans.factory.BeanFactory;
import org.springframework.beans.factory.BeanFactoryAware;
import org.springframework.lang.Nullable;
import org.springframework.util.Assert;
/**
* {@link ConnectionFactoryLookup} implementation based on a
* Spring {@link BeanFactory}.
*
* <p>Will lookup Spring managed beans identified by bean name,
* expecting them to be of type {@link ConnectionFactory}.
*
* @author Mark Paluch
* @since 5.3
* @see BeanFactory
*/
public class BeanFactoryConnectionFactoryLookup implements ConnectionFactoryLookup, BeanFactoryAware {
@Nullable
private BeanFactory beanFactory;
/**
* Create a new instance of the {@link BeanFactoryConnectionFactoryLookup} class.
* <p>The BeanFactory to access must be set via {@code setBeanFactory}.
* @see #setBeanFactory
*/
public BeanFactoryConnectionFactoryLookup() {}
/**
* Create a new instance of the {@link BeanFactoryConnectionFactoryLookup} class.
* <p>Use of this constructor is redundant if this object is being created
* by a Spring IoC container, as the supplied {@link BeanFactory} will be
* replaced by the {@link BeanFactory} that creates it (c.f. the
* {@link BeanFactoryAware} contract). So only use this constructor if you
* are using this class outside the context of a Spring IoC container.
* @param beanFactory the bean factory to be used to lookup {@link ConnectionFactory
* ConnectionFactories}
*/
public BeanFactoryConnectionFactoryLookup(BeanFactory beanFactory) {
Assert.notNull(beanFactory, "BeanFactory must not be null");
this.beanFactory = beanFactory;
}
@Override
public void setBeanFactory(BeanFactory beanFactory) {
this.beanFactory = beanFactory;
}
@Override
public ConnectionFactory getConnectionFactory(String connectionFactoryName)
throws ConnectionFactoryLookupFailureException {
Assert.state(this.beanFactory != null, "BeanFactory is required");
try {
return this.beanFactory.getBean(connectionFactoryName, ConnectionFactory.class);
}
catch (BeansException ex) {
throw new ConnectionFactoryLookupFailureException(
String.format("Failed to look up ConnectionFactory bean with name '%s'", connectionFactoryName), ex);
}
}
}
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