#215 - Add reactive examples for MongoDB, Apache Cassandra and Redis.

cassandra/reactive/src/main/java/example/springdata/cassandra/people/ApplicationConfiguration.java

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+/*
+ * 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.cassandra.people;
+
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.data.cassandra.config.SchemaAction;
+import org.springframework.data.cassandra.config.java.AbstractReactiveCassandraConfiguration;
+import org.springframework.data.cassandra.repository.config.EnableReactiveCassandraRepositories;
+
+/**
+ * Simple configuration for reactive Cassandra support.
+ *
+ * @author Mark Paluch
+ */
+@SpringBootApplication
+@EnableReactiveCassandraRepositories
+class ApplicationConfiguration extends AbstractReactiveCassandraConfiguration {
+
+	@Override
+	protected String getKeyspaceName() {
+		return "example";
+	}
+
+	@Override
+	public SchemaAction getSchemaAction() {
+		return SchemaAction.RECREATE;
+	}
+}

cassandra/reactive/src/main/java/example/springdata/cassandra/people/Person.java

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+/*
+ * 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.cassandra.people;
+
+import lombok.AllArgsConstructor;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+
+import org.springframework.cassandra.core.PrimaryKeyType;
+import org.springframework.data.cassandra.mapping.PrimaryKeyColumn;
+import org.springframework.data.cassandra.mapping.Table;
+
+/**
+ * An entity to represent a Person.
+ *
+ * @author Mark Paluch
+ */
+@Data
+@AllArgsConstructor
+@NoArgsConstructor
+@Table
+public class Person {
+
+	@PrimaryKeyColumn(type = PrimaryKeyType.CLUSTERED, ordinal = 2) private String firstname;
+	@PrimaryKeyColumn(type = PrimaryKeyType.PARTITIONED, ordinal = 1) private String lastname;
+	private int age;
+}

cassandra/reactive/src/main/java/example/springdata/cassandra/people/ReactivePersonRepository.java

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+/*
+ * 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.cassandra.people;
+
+import reactor.core.publisher.Flux;
+import reactor.core.publisher.Mono;
+
+import org.springframework.data.cassandra.repository.Query;
+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("SELECT * FROM person WHERE firstname = ?0 and lastname  = ?1")
+	Mono<Person> findByFirstnameInAndLastname(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);
+}

cassandra/reactive/src/main/java/example/springdata/cassandra/people/RxJava1PersonRepository.java

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+/*
+ * 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.cassandra.people;
+
+import rx.Observable;
+import rx.Single;
+
+import org.springframework.data.cassandra.repository.Query;
+import org.springframework.data.repository.reactive.RxJava1CrudRepository;
+
+/**
+ * Repository interface to manage {@link Person} instances.
+ *
+ * @author Mark Paluch
+ */
+public interface RxJava1PersonRepository extends RxJava1CrudRepository<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);
+}