spring OptionsCapableConnectionFactory 源码
springboot OptionsCapableConnectionFactory 代码
文件路径:/spring-boot-project/spring-boot/src/main/java/org/springframework/boot/r2dbc/OptionsCapableConnectionFactory.java
/*
* Copyright 2012-2021 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.boot.r2dbc;
import io.r2dbc.spi.Connection;
import io.r2dbc.spi.ConnectionFactory;
import io.r2dbc.spi.ConnectionFactoryMetadata;
import io.r2dbc.spi.ConnectionFactoryOptions;
import io.r2dbc.spi.Wrapped;
import org.reactivestreams.Publisher;
/**
* {@link ConnectionFactory} capable of providing access to the
* {@link ConnectionFactoryOptions} from which it was built.
*
* @author Andy Wilkinson
* @since 2.5.0
*/
public class OptionsCapableConnectionFactory implements Wrapped<ConnectionFactory>, ConnectionFactory {
private final ConnectionFactoryOptions options;
private final ConnectionFactory delegate;
/**
* Create a new {@code OptionsCapableConnectionFactory} that will provide access to
* the given {@code options} that were used to build the given {@code delegate}
* {@link ConnectionFactory}.
* @param options the options from which the connection factory was built
* @param delegate the delegate connection factory that was built with options
*/
public OptionsCapableConnectionFactory(ConnectionFactoryOptions options, ConnectionFactory delegate) {
this.options = options;
this.delegate = delegate;
}
public ConnectionFactoryOptions getOptions() {
return this.options;
}
@Override
public Publisher<? extends Connection> create() {
return this.delegate.create();
}
@Override
public ConnectionFactoryMetadata getMetadata() {
return this.delegate.getMetadata();
}
@Override
public ConnectionFactory unwrap() {
return this.delegate;
}
/**
* Returns, if possible, an {@code OptionsCapableConnectionFactory} by unwrapping the
* given {@code connectionFactory} as necessary. If the given
* {@code connectionFactory} does not wrap an {@code OptionsCapableConnectionFactory}
* and is not itself an {@code OptionsCapableConnectionFactory}, {@code null} is
* returned.
* @param connectionFactory the connection factory to unwrap
* @return the {@code OptionsCapableConnectionFactory} or {@code null}
* @since 2.5.1
*/
public static OptionsCapableConnectionFactory unwrapFrom(ConnectionFactory connectionFactory) {
if (connectionFactory instanceof OptionsCapableConnectionFactory) {
return (OptionsCapableConnectionFactory) connectionFactory;
}
if (connectionFactory instanceof Wrapped) {
Object unwrapped = ((Wrapped<?>) connectionFactory).unwrap();
if (unwrapped instanceof ConnectionFactory) {
return unwrapFrom((ConnectionFactory) unwrapped);
}
}
return null;
}
}
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- 本文标签: Spring Boot Spring Java
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