spring-data-jpa JpaQueryFactory 源码
spring-data-jpa JpaQueryFactory 代码
文件路径：/spring-data-jpa/src/main/java/org/springframework/data/jpa/repository/query/JpaQueryFactory.java
/*
* Copyright 2013-2022 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.query;
import jakarta.persistence.EntityManager;
import org.springframework.data.jpa.repository.QueryRewriter;
import org.springframework.data.repository.query.QueryMethodEvaluationContextProvider;
import org.springframework.data.repository.query.RepositoryQuery;
import org.springframework.expression.spel.standard.SpelExpressionParser;
import org.springframework.lang.Nullable;
/**
* Factory to create the appropriate {@link RepositoryQuery} for a {@link JpaQueryMethod}.
*
* @author Thomas Darimont
* @author Mark Paluch
*/
enum JpaQueryFactory {
INSTANCE;
private static final SpelExpressionParser PARSER = new SpelExpressionParser();
/**
* Creates a {@link RepositoryQuery} from the given {@link String} query.
*
* @param method must not be {@literal null}.
* @param em must not be {@literal null}.
* @param countQueryString
* @param queryString must not be {@literal null}.
* @param evaluationContextProvider
* @return
*/
AbstractJpaQuery fromMethodWithQueryString(JpaQueryMethod method, EntityManager em, String queryString,
@Nullable String countQueryString, QueryRewriter queryRewriter,
QueryMethodEvaluationContextProvider evaluationContextProvider) {
return method.isNativeQuery()
? new NativeJpaQuery(method, em, queryString, countQueryString, queryRewriter, evaluationContextProvider,
PARSER)
: new SimpleJpaQuery(method, em, queryString, countQueryString, queryRewriter, evaluationContextProvider,
PARSER);
}
/**
* Creates a {@link StoredProcedureJpaQuery} from the given {@link JpaQueryMethod} query.
*
* @param method must not be {@literal null}.
* @param em must not be {@literal null}.
* @return
*/
public StoredProcedureJpaQuery fromProcedureAnnotation(JpaQueryMethod method, EntityManager em) {
return new StoredProcedureJpaQuery(method, em);
}
}
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