/*
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* Copyright [2020-2030] [https://www.stylefeng.cn]
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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* Guns采用APACHE LICENSE 2.0开源协议，您在使用过程中，需要注意以下几点：
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*
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* 1.请不要删除和修改根目录下的LICENSE文件。
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* 2.请不要删除和修改Guns源码头部的版权声明。
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* 3.请保留源码和相关描述文件的项目出处，作者声明等。
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* 4.分发源码时候，请注明软件出处 https://gitee.com/stylefeng/guns
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* 5.在修改包名，模块名称，项目代码等时，请注明软件出处 https://gitee.com/stylefeng/guns
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* 6.若您的项目无法满足以上几点，可申请商业授权
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*/
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package cn.stylefeng.roses.kernel.dsctn;
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import org.springframework.jdbc.datasource.AbstractDataSource;
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import javax.sql.DataSource;
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import java.sql.Connection;
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import java.sql.SQLException;
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/**
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* 抽象动态获取数据源
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*
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* @author TaoYu
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* @since 2.2.0
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*/
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public abstract class AbstractRoutingDataSource extends AbstractDataSource {
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/**
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* 子类实现决定最终数据源
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*
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* @return 数据源
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*/
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protected abstract DataSource determineDataSource();
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@Override
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public Connection getConnection() throws SQLException {
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return determineDataSource().getConnection();
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}
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@Override
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public Connection getConnection(String username, String password) throws SQLException {
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return determineDataSource().getConnection(username, password);
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}
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@Override
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@SuppressWarnings("unchecked")
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public <T> T unwrap(Class<T> iface) throws SQLException {
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if (iface.isInstance(this)) {
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return (T) this;
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}
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return determineDataSource().unwrap(iface);
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}
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@Override
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public boolean isWrapperFor(Class<?> iface) throws SQLException {
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return (iface.isInstance(this) || determineDataSource().isWrapperFor(iface));
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}
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}
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