spring-data-jpa QueryHints 源码
spring-data-jpa QueryHints 代码
文件路径：/spring-data-jpa/src/main/java/org/springframework/data/jpa/repository/QueryHints.java
/*
* Copyright 2008-2022 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.repository;
import java.lang.annotation.Documented;
import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;
import jakarta.persistence.QueryHint;
/**
* Wrapper annotation to allow {@link QueryHint} annotations to be bound to methods. It will be evaluated when using
* {@link Query} on a query method or if you derive the query from the method name. If you rely on named queries either
* use the XML or annotation based way to declare {@link QueryHint}s in combination with the actual named query
* declaration.
*
* @author Oliver Gierke
*/
@Target({ ElementType.METHOD, ElementType.ANNOTATION_TYPE })
@Retention(RetentionPolicy.RUNTIME)
@Documented
public @interface QueryHints {
/**
* The {@link QueryHint}s to apply when the query will be executed.
*
* @return
*/
QueryHint[] value() default {};
/**
* Defines whether the configured {@link QueryHint}s shall be applied for count queries during pagination as well.
* Defaults to {@literal true}.
*
* @return
*/
boolean forCounting() default true;
}
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