/*
* Copyright 2016-2017 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
*
* http://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.mongodb.repository.support;
import static org.springframework.data.mongodb.core.query.Criteria.*;
import lombok.NonNull;
import lombok.RequiredArgsConstructor;
import reactor.core.publisher.Flux;
import reactor.core.publisher.Mono;
import java.io.Serializable;
import java.util.List;
import java.util.stream.Collectors;
import org.reactivestreams.Publisher;
import org.springframework.data.domain.Example;
import org.springframework.data.domain.Sort;
import org.springframework.data.mongodb.core.ReactiveMongoOperations;
import org.springframework.data.mongodb.core.query.Criteria;
import org.springframework.data.mongodb.core.query.Query;
import org.springframework.data.mongodb.repository.ReactiveMongoRepository;
import org.springframework.data.mongodb.repository.query.MongoEntityInformation;
import org.springframework.data.util.StreamUtils;
import org.springframework.data.util.Streamable;
import org.springframework.util.Assert;
/**
* Reactive repository base implementation for Mongo.
*
* @author Mark Paluch
* @author Oliver Gierke
* @since 2.0
*/
@RequiredArgsConstructor
public class SimpleReactiveMongoRepository<T, ID extends Serializable> implements ReactiveMongoRepository<T, ID> {
private final @NonNull MongoEntityInformation<T, ID> entityInformation;
private final @NonNull ReactiveMongoOperations mongoOperations;
/*
* (non-Javadoc)
* @see org.springframework.data.repository.reactive.ReactiveCrudRepository#findById(java.lang.Object)
*/
@Override
public Mono<T> findById(ID id) {
Assert.notNull(id, "The given id must not be null!");
return mongoOperations.findById(id, entityInformation.getJavaType(), entityInformation.getCollectionName());
}
/*
* (non-Javadoc)
* @see org.springframework.data.repository.reactive.ReactiveCrudRepository#findById(reactor.core.publisher.Mono)
*/
@Override
public Mono<T> findById(Mono<ID> mono) {
Assert.notNull(mono, "The given id must not be null!");
return mono.flatMap(
id -> mongoOperations.findById(id, entityInformation.getJavaType(), entityInformation.getCollectionName()));
}
/*
* (non-Javadoc)
* @see org.springframework.data.repository.reactive.ReactiveCrudRepository#existsById(java.lang.Object)
*/
@Override
public Mono<Boolean> existsById(ID id) {
Assert.notNull(id, "The given id must not be null!");
return mongoOperations.exists(getIdQuery(id), entityInformation.getJavaType(),
entityInformation.getCollectionName());
}
/*
* (non-Javadoc)
* @see org.springframework.data.repository.reactive.ReactiveCrudRepository#existsById(reactor.core.publisher.Mono)
*/
@Override
public Mono<Boolean> existsById(Mono<ID> mono) {
Assert.notNull(mono, "The given id must not be null!");
return mono.flatMap(id -> mongoOperations.exists(getIdQuery(id), entityInformation.getJavaType(),
entityInformation.getCollectionName()));
}
@Override
public Flux<T> findAll() {
return findAll(new Query());
}
/*
* (non-Javadoc)
* @see org.springframework.data.repository.reactive.ReactiveCrudRepository#findAllById(java.lang.Iterable)
*/
@Override
public Flux<T> findAllById(Iterable<ID> ids) {
Assert.notNull(ids, "The given Iterable of Id's must not be null!");
return findAll(new Query(new Criteria(entityInformation.getIdAttribute())
.in(Streamable.of(ids).stream().collect(StreamUtils.toUnmodifiableList()))));
}
/*
* (non-Javadoc)
* @see org.springframework.data.repository.reactive.ReactiveCrudRepository#findAllById(org.reactivestreams.Publisher)
*/
@Override
public Flux<T> findAllById(Publisher<ID> ids) {
Assert.notNull(ids, "The given Publisher of Id's must not be null!");
return Flux.from(ids).buffer().flatMap(this::findAllById);
}
/*
* (non-Javadoc)
* @see org.springframework.data.repository.reactive.ReactiveSortingRepository#findAll(org.springframework.data.domain.Sort)
*/
@Override
public Flux<T> findAll(Sort sort) {
return findAll(new Query().with(sort));
}
/*
* (non-Javadoc)
* @see org.springframework.data.mongodb.repository.ReactiveMongoRepository#findAll(org.springframework.data.domain.Example, org.springframework.data.domain.Sort)
*/
@Override
public <S extends T> Flux<S> findAll(Example<S> example, Sort sort) {
Assert.notNull(example, "Sample must not be null!");
Assert.notNull(sort, "Sort must not be null!");
Query query = new Query(new Criteria().alike(example)).with(sort);
return mongoOperations.find(query, example.getProbeType(), entityInformation.getCollectionName());
}
/*
* (non-Javadoc)
* @see org.springframework.data.mongodb.repository.ReactiveMongoRepository#findAll(org.springframework.data.domain.Example)
*/
@Override
public <S extends T> Flux<S> findAll(Example<S> example) {
return findAll(example, Sort.unsorted());
}
/*
* (non-Javadoc)
* @see org.springframework.data.repository.reactive.ReactiveCrudRepository#count()
*/
public Mono<Long> count() {
return mongoOperations.count(new Query(), entityInformation.getCollectionName());
}
/*
* (non-Javadoc)
* @see org.springframework.data.mongodb.repository.ReactiveMongoRepository#insert(java.lang.Object)
*/
@Override
public <S extends T> Mono<S> insert(S entity) {
Assert.notNull(entity, "Entity must not be null!");
return mongoOperations.insert(entity, entityInformation.getCollectionName());
}
/*
* (non-Javadoc)
* @see org.springframework.data.mongodb.repository.ReactiveMongoRepository#insert(java.lang.Iterable)
*/
@Override
public <S extends T> Flux<S> insert(Iterable<S> entities) {
Assert.notNull(entities, "The given Iterable of entities must not be null!");
List<S> source = Streamable.of(entities).stream().collect(StreamUtils.toUnmodifiableList());
return source.isEmpty() ? Flux.empty() : Flux.from(mongoOperations.insertAll(source));
}
/*
* (non-Javadoc)
* @see org.springframework.data.mongodb.repository.ReactiveMongoRepository#insert(org.reactivestreams.Publisher)
*/
@Override
public <S extends T> Flux<S> insert(Publisher<S> entities) {
Assert.notNull(entities, "The given Publisher of entities must not be null!");
return Flux.from(entities).flatMap(entity -> mongoOperations.insert(entity, entityInformation.getCollectionName()));
}
/*
* (non-Javadoc)
* @see org.springframework.data.repository.reactive.ReactiveCrudRepository#save(java.lang.Object)
*/
@Override
public <S extends T> Mono<S> save(S entity) {
Assert.notNull(entity, "Entity must not be null!");
if (entityInformation.isNew(entity)) {
return mongoOperations.insert(entity, entityInformation.getCollectionName());
}
return mongoOperations.save(entity, entityInformation.getCollectionName());
}
/*
* (non-Javadoc)
* @see org.springframework.data.repository.reactive.ReactiveCrudRepository#saveAll(java.lang.Iterable)
*/
@Override
public <S extends T> Flux<S> saveAll(Iterable<S> entities) {
Assert.notNull(entities, "The given Iterable of entities must not be null!");
Streamable<S> source = Streamable.of(entities);
return source.stream().allMatch(it -> entityInformation.isNew(it)) ? //
mongoOperations.insertAll(source.stream().collect(Collectors.toList())) : //
Flux.fromIterable(entities).flatMap(this::save);
}
/*
* (non-Javadoc)
* @see org.springframework.data.repository.reactive.ReactiveCrudRepository#saveAll(org.reactivestreams.Publisher)
*/
@Override
public <S extends T> Flux<S> saveAll(Publisher<S> entityStream) {
Assert.notNull(entityStream, "The given Publisher of entities must not be null!");
return Flux.from(entityStream)
.flatMap(entity -> entityInformation.isNew(entity) ? //
mongoOperations.insert(entity, entityInformation.getCollectionName()).then(Mono.just(entity)) : //
mongoOperations.save(entity, entityInformation.getCollectionName()).then(Mono.just(entity)));
}
/*
* (non-Javadoc)
* @see org.springframework.data.repository.reactive.ReactiveCrudRepository#deleteById(java.lang.Object)
*/
@Override
public Mono<Void> deleteById(ID id) {
Assert.notNull(id, "The given id must not be null!");
return mongoOperations
.remove(getIdQuery(id), entityInformation.getJavaType(), entityInformation.getCollectionName()).then();
}
/*
* (non-Javadoc)
* @see org.springframework.data.repository.reactive.ReactiveCrudRepository#delete(java.lang.Object)
*/
@Override
public Mono<Void> delete(T entity) {
Assert.notNull(entity, "The given entity must not be null!");
return deleteById(entityInformation.getRequiredId(entity));
}
/*
* (non-Javadoc)
* @see org.springframework.data.repository.reactive.ReactiveCrudRepository#deleteAll(java.lang.Iterable)
*/
@Override
public Mono<Void> deleteAll(Iterable<? extends T> entities) {
Assert.notNull(entities, "The given Iterable of entities must not be null!");
return Flux.fromIterable(entities).flatMap(entity -> deleteById(entityInformation.getRequiredId(entity))).then();
}
/*
* (non-Javadoc)
* @see org.springframework.data.repository.reactive.ReactiveCrudRepository#deleteAll(org.reactivestreams.Publisher)
*/
@Override
public Mono<Void> deleteAll(Publisher<? extends T> entityStream) {
Assert.notNull(entityStream, "The given Publisher of entities must not be null!");
return Flux.from(entityStream)//
.map(it -> entityInformation.getRequiredId(it))//
.flatMap(this::deleteById)//
.then();
}
/*
* (non-Javadoc)
* @see org.springframework.data.repository.reactive.ReactiveCrudRepository#deleteAll()
*/
public Mono<Void> deleteAll() {
return mongoOperations.remove(new Query(), entityInformation.getCollectionName()).then(Mono.empty());
}
public <S extends T> Mono<Boolean> exists(Example<S> example) {
Assert.notNull(example, "Sample must not be null!");
Query q = new Query(new Criteria().alike(example));
return mongoOperations.exists(q, example.getProbeType(), entityInformation.getCollectionName());
}
public <S extends T> Mono<S> findOne(Example<S> example) {
Assert.notNull(example, "Sample must not be null!");
Query q = new Query(new Criteria().alike(example));
return mongoOperations.findOne(q, example.getProbeType(), entityInformation.getCollectionName());
}
public <S extends T> Mono<Long> count(Example<S> example) {
Assert.notNull(example, "Sample must not be null!");
Query q = new Query(new Criteria().alike(example));
return mongoOperations.count(q, example.getProbeType(), entityInformation.getCollectionName());
}
private Query getIdQuery(Object id) {
return new Query(getIdCriteria(id));
}
private Criteria getIdCriteria(Object id) {
return where(entityInformation.getIdAttribute()).is(id);
}
private Flux<T> findAll(Query query) {
if (query == null) {
return Flux.empty();
}
return mongoOperations.find(query, entityInformation.getJavaType(), entityInformation.getCollectionName());
}
}