spring DatabasePopulatorUtils 源码
spring DatabasePopulatorUtils 代码
文件路径：/spring-jdbc/src/main/java/org/springframework/jdbc/datasource/init/DatabasePopulatorUtils.java
/*
* Copyright 2002-2021 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.jdbc.datasource.init;
import java.sql.Connection;
import javax.sql.DataSource;
import org.springframework.dao.DataAccessException;
import org.springframework.jdbc.datasource.DataSourceUtils;
import org.springframework.util.Assert;
/**
* Utility methods for executing a {@link DatabasePopulator}.
*
* @author Juergen Hoeller
* @author Oliver Gierke
* @author Sam Brannen
* @since 3.1
*/
public abstract class DatabasePopulatorUtils {
/**
* Execute the given {@link DatabasePopulator} against the given {@link DataSource}.
* <p>As of Spring Framework 5.3.11, the {@link Connection} for the supplied
* {@code DataSource} will be {@linkplain Connection#commit() committed} if
* it is not configured for {@link Connection#getAutoCommit() auto-commit} and
* is not {@linkplain DataSourceUtils#isConnectionTransactional transactional}.
* @param populator the {@code DatabasePopulator} to execute
* @param dataSource the {@code DataSource} to execute against
* @throws DataAccessException if an error occurs, specifically a {@link ScriptException}
* @see DataSourceUtils#isConnectionTransactional(Connection, DataSource)
*/
public static void execute(DatabasePopulator populator, DataSource dataSource) throws DataAccessException {
Assert.notNull(populator, "DatabasePopulator must not be null");
Assert.notNull(dataSource, "DataSource must not be null");
try {
Connection connection = DataSourceUtils.getConnection(dataSource);
try {
populator.populate(connection);
if (!connection.getAutoCommit() && !DataSourceUtils.isConnectionTransactional(connection, dataSource)) {
connection.commit();
}
}
finally {
DataSourceUtils.releaseConnection(connection, dataSource);
}
}
catch (ScriptException ex) {
throw ex;
}
catch (Throwable ex) {
throw new UncategorizedScriptException("Failed to execute database script", ex);
}
}
}
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