spring-data-jpa HibernateUtils 源码
spring-data-jpa HibernateUtils 代码
文件路径：/spring-data-jpa/src/main/java/org/springframework/data/jpa/provider/HibernateUtils.java
/*
* Copyright 2016-2022 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.data.jpa.provider;
import org.hibernate.query.Query;
import org.hibernate.query.spi.SqmQuery;
import org.springframework.lang.Nullable;
/**
* Utility functions to work with Hibernate. Mostly using reflection to make sure common functionality can be executed
* against all the Hibernate version we support.
*
* @author Oliver Gierke
* @author Mark Paluch
* @author Jens Schauder
* @since 1.10.2
* @soundtrack Benny Greb - Soulfood (Live, https://www.youtube.com/watch?v=9_ErMa_CtSw)
*/
public abstract class HibernateUtils {
private HibernateUtils() {}
/**
* Return the query string of the underlying native Hibernate query.
*
* @param query
* @return
*/
@Nullable
public static String getHibernateQuery(Object query) {
try {
// Try the new Hibernate implementation first
if (query instanceof SqmQuery) {
return ((SqmQuery) query).getSqmStatement().toHqlString();
}
// Couple of cases in which this still breaks, see HHH-15389
} catch (RuntimeException o_O) {}
// Try the old way, as it still works in some cases (haven't investigated in which exactly)
if (query instanceof Query) {
return ((Query<?>) query).getQueryString();
} else {
throw new IllegalArgumentException("Don't know how to extract the query string from " + query);
}
}
}
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