/* * Copyright (c) 2019-2020 "Neo4j," * Neo4j Sweden AB [https://neo4j.com] * * This file is part of Neo4j. * * 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.neo4j.springframework.data.repository.query; import java.util.List; import java.util.function.BiFunction; import org.neo4j.driver.Record; import org.neo4j.driver.types.TypeSystem; import org.neo4j.springframework.data.core.PreparedQuery; import org.neo4j.springframework.data.core.ReactiveNeo4jOperations; import org.neo4j.springframework.data.core.mapping.Neo4jMappingContext; import org.springframework.data.repository.query.QueryMethod; import org.springframework.data.repository.query.RepositoryQuery; import org.springframework.data.repository.query.ResultProcessor; import org.springframework.lang.Nullable; import org.springframework.util.Assert; /** * Base class for {@link RepositoryQuery} implementations for Neo4j. * * @author Gerrit Meier * @author Michael J. Simons * @since 1.0 */ abstract class AbstractReactiveNeo4jQuery extends Neo4jQuerySupport implements RepositoryQuery { protected final ReactiveNeo4jOperations neo4jOperations; AbstractReactiveNeo4jQuery(ReactiveNeo4jOperations neo4jOperations, Neo4jMappingContext mappingContext, Neo4jQueryMethod queryMethod, Neo4jQueryType queryType) { super(mappingContext, queryMethod, queryType); Assert.notNull(neo4jOperations, "The Neo4j operations are required."); this.neo4jOperations = neo4jOperations; } @Override public QueryMethod getQueryMethod() { return this.queryMethod; } @Override public final Object execute(Object[] parameters) { Neo4jParameterAccessor parameterAccessor = getParameterAccessor(parameters); ResultProcessor resultProcessor = queryMethod.getResultProcessor().withDynamicProjection(parameterAccessor); PreparedQuery<?> preparedQuery = prepareQuery(resultProcessor.getReturnedType().getReturnedType(), getInputProperties(resultProcessor), parameterAccessor, null, getMappingFunction(resultProcessor)); Object rawResult = new Neo4jQueryExecution.ReactiveQueryExecution(neo4jOperations).execute( preparedQuery, queryMethod.isCollectionLikeQuery()); return resultProcessor.processResult(rawResult, OptionalUnwrappingConverter.INSTANCE); } protected abstract <T extends Object> PreparedQuery<T> prepareQuery( Class<T> returnedType, List<String> includedProperties, Neo4jParameterAccessor parameterAccessor, @Nullable Neo4jQueryType queryType, @Nullable BiFunction<TypeSystem, Record, ?> mappingFunction); }