example.springdata.mongodb.people.ReactivePersonRepository.java Source code

Introduction

Here is the source code for example.springdata.mongodb.people.ReactivePersonRepository.java

Source

/*
 * Copyright 2016 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 example.springdata.mongodb.people;

import reactor.core.publisher.Flux;
import reactor.core.publisher.Mono;

import org.springframework.data.mongodb.repository.Query;
import org.springframework.data.mongodb.repository.Tailable;
import org.springframework.data.repository.reactive.ReactiveCrudRepository;

/**
 * Repository interface to manage {@link Person} instances.
 *
 * @author Mark Paluch
 */
public interface ReactivePersonRepository extends ReactiveCrudRepository<Person, String> {

    /**
     * Derived query selecting by {@code lastname}.
     *
     * @param lastname
     * @return
     */
    Flux<Person> findByLastname(String lastname);

    /**
     * String query selecting one entity.
     *
     * @param lastname
     * @return
     */
    @Query("{ 'firstname': ?0, 'lastname': ?1}")
    Mono<Person> findByFirstnameAndLastname(String firstname, String lastname);

    /**
     * Derived query selecting by {@code lastname}. {@code lastname} uses deferred resolution that does not require
     * blocking to obtain the parameter value.
     *
     * @param lastname
     * @return
     */
    Flux<Person> findByLastname(Mono<String> lastname);

    /**
     * Derived query selecting by {@code firstname} and {@code lastname}. {@code firstname} uses deferred resolution that
     * does not require blocking to obtain the parameter value.
     *
     * @param firstname
     * @param lastname
     * @return
     */
    Mono<Person> findByFirstnameAndLastname(Mono<String> firstname, String lastname);

    /**
     * Use a tailable cursor to emit a stream of entities as new entities are written to the capped collection.
     * 
     * @return
     */
    @Tailable
    Flux<Person> findWithTailableCursorBy();
}