spring-data-redis RedisRepositoryFactory 源码

spring-data-redis RedisRepositoryFactory 代码

文件路径：/src/main/java/org/springframework/data/redis/repository/support/RedisRepositoryFactory.java

/*
 * Copyright 2015-2022 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.redis.repository.support;

import org.springframework.data.keyvalue.core.KeyValueOperations;
import org.springframework.data.keyvalue.repository.query.KeyValuePartTreeQuery;
import org.springframework.data.keyvalue.repository.support.KeyValueRepositoryFactory;
import org.springframework.data.redis.core.mapping.RedisMappingContext;
import org.springframework.data.redis.core.mapping.RedisPersistentEntity;
import org.springframework.data.redis.repository.core.MappingRedisEntityInformation;
import org.springframework.data.redis.repository.query.RedisQueryCreator;
import org.springframework.data.repository.core.EntityInformation;
import org.springframework.data.repository.core.RepositoryMetadata;
import org.springframework.data.repository.core.support.RepositoryComposition.RepositoryFragments;
import org.springframework.data.repository.core.support.RepositoryFactorySupport;
import org.springframework.data.repository.core.support.RepositoryFragment;
import org.springframework.data.repository.query.QueryByExampleExecutor;
import org.springframework.data.repository.query.RepositoryQuery;
import org.springframework.data.repository.query.parser.AbstractQueryCreator;

/**
 * {@link RepositoryFactorySupport} specific of handing Redis
 * {@link org.springframework.data.keyvalue.repository.KeyValueRepository}.
 *
 * @author Christoph Strobl
 * @author Oliver Gierke
 * @author Mark Paluch
 * @since 1.7
 */
public class RedisRepositoryFactory extends KeyValueRepositoryFactory {

	private final KeyValueOperations operations;

	/**
	 * @param keyValueOperations
	 * @see KeyValueRepositoryFactory#KeyValueRepositoryFactory(KeyValueOperations)
	 */
	public RedisRepositoryFactory(KeyValueOperations keyValueOperations) {
		this(keyValueOperations, RedisQueryCreator.class);
	}

	/**
	 * @param keyValueOperations
	 * @param queryCreator
	 * @see KeyValueRepositoryFactory#KeyValueRepositoryFactory(KeyValueOperations, Class)
	 */
	public RedisRepositoryFactory(KeyValueOperations keyValueOperations,
			Class<? extends AbstractQueryCreator<?, ?>> queryCreator) {
		this(keyValueOperations, queryCreator, KeyValuePartTreeQuery.class);
	}

	/**
	 * @param keyValueOperations
	 * @param queryCreator
	 * @param repositoryQueryType
	 * @see KeyValueRepositoryFactory#KeyValueRepositoryFactory(KeyValueOperations, Class, Class)
	 */
	public RedisRepositoryFactory(KeyValueOperations keyValueOperations,
			Class<? extends AbstractQueryCreator<?, ?>> queryCreator, Class<? extends RepositoryQuery> repositoryQueryType) {
		super(keyValueOperations, queryCreator, repositoryQueryType);

		this.operations = keyValueOperations;
	}

	@Override
	protected RepositoryFragments getRepositoryFragments(RepositoryMetadata metadata) {

		RepositoryFragments fragments = RepositoryFragments.empty();

		if (QueryByExampleExecutor.class.isAssignableFrom(metadata.getRepositoryInterface())) {

			RedisMappingContext mappingContext = (RedisMappingContext) this.operations.getMappingContext();
			RedisPersistentEntity<?> persistentEntity = mappingContext.getRequiredPersistentEntity(metadata.getDomainType());
			MappingRedisEntityInformation<?, ?> entityInformation = new MappingRedisEntityInformation<>(persistentEntity);

			fragments = fragments.append(RepositoryFragment.implemented(QueryByExampleExecutor.class,
					getTargetRepositoryViaReflection(QueryByExampleRedisExecutor.class, entityInformation, operations)));
		}

		return fragments;
	}

	@Override
	@SuppressWarnings("unchecked")
	public <T, ID> EntityInformation<T, ID> getEntityInformation(Class<T> domainClass) {

		RedisPersistentEntity<T> entity = (RedisPersistentEntity<T>) operations.getMappingContext()
				.getRequiredPersistentEntity(domainClass);

		return new MappingRedisEntityInformation<>(entity);
	}
}

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