spring H2EmbeddedDatabaseConfigurer 源码
spring H2EmbeddedDatabaseConfigurer 代码
文件路径：/spring-jdbc/src/main/java/org/springframework/jdbc/datasource/embedded/H2EmbeddedDatabaseConfigurer.java
/*
* Copyright 2002-2018 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.embedded;
import java.sql.Driver;
import org.springframework.lang.Nullable;
import org.springframework.util.ClassUtils;
/**
* {@link EmbeddedDatabaseConfigurer} for an H2 embedded database instance.
*
* <p>Call {@link #getInstance()} to get the singleton instance of this class.
*
* @author Oliver Gierke
* @author Juergen Hoeller
* @author Sam Brannen
* @since 3.0
*/
final class H2EmbeddedDatabaseConfigurer extends AbstractEmbeddedDatabaseConfigurer {
@Nullable
private static H2EmbeddedDatabaseConfigurer instance;
private final Class<? extends Driver> driverClass;
/**
* Get the singleton {@code H2EmbeddedDatabaseConfigurer} instance.
* @return the configurer instance
* @throws ClassNotFoundException if H2 is not on the classpath
*/
@SuppressWarnings("unchecked")
public static synchronized H2EmbeddedDatabaseConfigurer getInstance() throws ClassNotFoundException {
if (instance == null) {
instance = new H2EmbeddedDatabaseConfigurer( (Class<? extends Driver>)
ClassUtils.forName("org.h2.Driver", H2EmbeddedDatabaseConfigurer.class.getClassLoader()));
}
return instance;
}
private H2EmbeddedDatabaseConfigurer(Class<? extends Driver> driverClass) {
this.driverClass = driverClass;
}
@Override
public void configureConnectionProperties(ConnectionProperties properties, String databaseName) {
properties.setDriverClass(this.driverClass);
properties.setUrl(String.format("jdbc:h2:mem:%s;DB_CLOSE_DELAY=-1;DB_CLOSE_ON_EXIT=false", databaseName));
properties.setUsername("sa");
properties.setPassword("");
}
}
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