spring EmbeddedDatabaseConfigurerFactory 源码
spring EmbeddedDatabaseConfigurerFactory 代码
文件路径：/spring-jdbc/src/main/java/org/springframework/jdbc/datasource/embedded/EmbeddedDatabaseConfigurerFactory.java
/*
* Copyright 2002-2022 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 org.springframework.util.Assert;
/**
* Maps well-known {@linkplain EmbeddedDatabaseType embedded database types}
* to {@link EmbeddedDatabaseConfigurer} strategies.
*
* @author Keith Donald
* @author Oliver Gierke
* @author Sam Brannen
* @since 3.0
*/
final class EmbeddedDatabaseConfigurerFactory {
private EmbeddedDatabaseConfigurerFactory() {
}
/**
* Return a configurer instance for the given embedded database type.
* @param type the embedded database type (HSQL, H2 or Derby)
* @return the configurer instance
* @throws IllegalStateException if the driver for the specified database type is not available
*/
public static EmbeddedDatabaseConfigurer getConfigurer(EmbeddedDatabaseType type) throws IllegalStateException {
Assert.notNull(type, "EmbeddedDatabaseType is required");
try {
return switch (type) {
case HSQL -> HsqlEmbeddedDatabaseConfigurer.getInstance();
case H2 -> H2EmbeddedDatabaseConfigurer.getInstance();
case DERBY -> DerbyEmbeddedDatabaseConfigurer.getInstance();
default -> throw new UnsupportedOperationException("Embedded database type [" + type + "] is not supported");
};
}
catch (ClassNotFoundException | NoClassDefFoundError ex) {
throw new IllegalStateException("Driver for test database type [" + type + "] is not available", ex);
}
}
}
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