Java tutorial
/* * 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 example.springdata.cassandra.people; import io.reactivex.Observable; import io.reactivex.Single; import org.springframework.data.cassandra.repository.Query; import org.springframework.data.repository.reactive.RxJava2CrudRepository; /** * Repository interface to manage {@link Person} instances. * * @author Mark Paluch */ public interface RxJava2PersonRepository extends RxJava2CrudRepository<Person, String> { /** * Derived query selecting by {@code lastname}. * * @param lastname * @return */ Observable<Person> findByLastname(String lastname); /** * String query selecting one entity. * * @param lastname * @return */ @Query("SELECT * FROM person WHERE firstname = ?0 and lastname = ?1") Single<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 */ Observable<Person> findByLastname(Single<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 */ Single<Person> findByFirstnameAndLastname(Single<String> firstname, String lastname); }