content: /*
   * Licensed to the Apache Software Foundation (ASF) under one
   * or more contributor license agreements.  See the NOTICE file
   * distributed with this work for additional information
   * regarding copyright ownership.  The ASF licenses this file
   * to you 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 com.datastax.oss.driver.mapper;
  
  import static org.assertj.core.api.Assertions.assertThat;
  
  import com.datastax.dse.driver.api.core.cql.reactive.ReactiveResultSet;
  import com.datastax.dse.driver.api.core.cql.reactive.ReactiveRow;
  import com.datastax.dse.driver.api.mapper.reactive.MappedReactiveResultSet;
  import com.datastax.oss.driver.api.core.CqlIdentifier;
  import com.datastax.oss.driver.api.core.CqlSession;
  import com.datastax.oss.driver.api.core.Version;
  import com.datastax.oss.driver.api.core.cql.SimpleStatement;
  import com.datastax.oss.driver.api.mapper.annotations.Dao;
  import com.datastax.oss.driver.api.mapper.annotations.DaoFactory;
  import com.datastax.oss.driver.api.mapper.annotations.DaoKeyspace;
  import com.datastax.oss.driver.api.mapper.annotations.DefaultNullSavingStrategy;
  import com.datastax.oss.driver.api.mapper.annotations.Delete;
  import com.datastax.oss.driver.api.mapper.annotations.Insert;
  import com.datastax.oss.driver.api.mapper.annotations.Mapper;
  import com.datastax.oss.driver.api.mapper.annotations.Select;
  import com.datastax.oss.driver.api.mapper.entity.saving.NullSavingStrategy;
  import com.datastax.oss.driver.api.testinfra.ccm.CcmBridge;
  import com.datastax.oss.driver.api.testinfra.ccm.CustomCcmRule;
  import com.datastax.oss.driver.api.testinfra.requirement.BackendType;
  import com.datastax.oss.driver.api.testinfra.session.SessionRule;
  import io.reactivex.Flowable;
  import java.util.UUID;
  import org.junit.Before;
  import org.junit.BeforeClass;
  import org.junit.ClassRule;
  import org.junit.Test;
  import org.junit.rules.RuleChain;
  import org.junit.rules.TestRule;
  
  // Do not run LWT tests in parallel because they may interfere. Tests operate on the same row.
  public class DeleteReactiveIT extends InventoryITBase {
  
    private static CustomCcmRule ccmRule = configureCcm(CustomCcmRule.builder()).build();
  
    private static SessionRule<CqlSession> sessionRule = SessionRule.builder(ccmRule).build();
  
    @ClassRule public static TestRule chain = RuleChain.outerRule(ccmRule).around(sessionRule);
  
    private static CustomCcmRule.Builder configureCcm(CustomCcmRule.Builder builder) {
      if (!CcmBridge.isDistributionOf(
          BackendType.DSE, (dist, cass) -> cass.nextStable().compareTo(Version.V4_0_0) >= 0)) {
        builder.withCassandraConfiguration("enable_sasi_indexes", true);
      }
      return builder;
    }
  
    private static DseProductDao dao;
  
    @BeforeClass
    public static void setup() {
      CqlSession session = sessionRule.session();
  
      for (String query : createStatements(ccmRule)) {
        session.execute(
            SimpleStatement.builder(query).setExecutionProfile(sessionRule.slowProfile()).build());
      }
  
      DseInventoryMapper inventoryMapper =
          new DeleteReactiveIT_DseInventoryMapperBuilder(session).build();
      dao = inventoryMapper.productDao(sessionRule.keyspace());
    }
  
    @Before
    public void insertFixtures() {
      Flowable.fromPublisher(dao.saveReactive(FLAMETHROWER)).blockingSubscribe();
    }
  
    @Test
    public void should_delete_entity_reactive() {
      UUID id = FLAMETHROWER.getId();
      assertThat(Flowable.fromPublisher(dao.findByIdReactive(id)).blockingSingle()).isNotNull();
  
      ReactiveResultSet rs = dao.deleteEntityReactive(FLAMETHROWER);
      ReactiveRow row = Flowable.fromPublisher(rs).singleElement().blockingGet();
  
      assertThat(row).isNull();
      assertThat(Flowable.fromPublisher(dao.findByIdReactive(id)).singleElement().blockingGet())
          .isNull();
    }
  
    @Test
    public void should_delete_by_id_reactive() {
      UUID id = FLAMETHROWER.getId();
      assertThat(Flowable.fromPublisher(dao.findByIdReactive(id)).blockingSingle()).isNotNull();
  
      ReactiveResultSet rs = dao.deleteByIdReactive(id);
      ReactiveRow row = Flowable.fromPublisher(rs).singleElement().blockingGet();
  
      assertThat(row).isNull();
      assertThat(Flowable.fromPublisher(dao.findByIdReactive(id)).singleElement().blockingGet())
          .isNull();
  
      // Non-existing id should be silently ignored
      rs = dao.deleteByIdReactive(id);
      row = Flowable.fromPublisher(rs).singleElement().blockingGet();
  
      assertThat(row).isNull();
    }
  
    @Test
    public void should_delete_if_exists_reactive() {
      UUID id = FLAMETHROWER.getId();
      assertThat(Flowable.fromPublisher(dao.findByIdReactive(id)).blockingSingle()).isNotNull();
      {
        ReactiveResultSet rs = dao.deleteIfExistsReactive(FLAMETHROWER);
        ReactiveRow row = Flowable.fromPublisher(rs).blockingSingle();
        assertThat(row.wasApplied()).isTrue();
        assertThat(Flowable.fromPublisher(rs.wasApplied()).blockingSingle()).isTrue();
      }
      assertThat(Flowable.fromPublisher(dao.findByIdReactive(id)).singleElement().blockingGet())
          .isNull();
      {
        ReactiveResultSet rs = dao.deleteIfExistsReactive(FLAMETHROWER);
        ReactiveRow row = Flowable.fromPublisher(rs).singleElement().blockingGet();
        assertThat(row.wasApplied()).isFalse();
        assertThat(Flowable.fromPublisher(rs.wasApplied()).blockingSingle()).isFalse();
      }
    }
  
    @Test
    public void should_delete_with_condition_reactive() {
      UUID id = FLAMETHROWER.getId();
      assertThat(Flowable.fromPublisher(dao.findByIdReactive(id)).blockingSingle()).isNotNull();
      {
        ReactiveResultSet rs = dao.deleteIfDescriptionMatchesReactive(id, "foo");
        ReactiveRow row = Flowable.fromPublisher(rs).blockingSingle();
        assertThat(row.wasApplied()).isFalse();
        assertThat(Flowable.fromPublisher(rs.wasApplied()).blockingSingle()).isFalse();
        assertThat(row.getString("description")).isEqualTo(FLAMETHROWER.getDescription());
      }
      {
        ReactiveResultSet rs =
            dao.deleteIfDescriptionMatchesReactive(id, FLAMETHROWER.getDescription());
        ReactiveRow row = Flowable.fromPublisher(rs).blockingSingle();
        assertThat(row.wasApplied()).isTrue();
        assertThat(Flowable.fromPublisher(rs.wasApplied()).blockingSingle()).isTrue();
      }
      assertThat(Flowable.fromPublisher(dao.findByIdReactive(id)).singleElement().blockingGet())
          .isNull();
    }
  
    @Mapper
    public interface DseInventoryMapper {
      @DaoFactory
      DseProductDao productDao(@DaoKeyspace CqlIdentifier keyspace);
    }
  
    @Dao
    @DefaultNullSavingStrategy(NullSavingStrategy.SET_TO_NULL)
    public interface DseProductDao {
  
      @Delete
      ReactiveResultSet deleteEntityReactive(Product product);
  
      @Delete(entityClass = Product.class)
      ReactiveResultSet deleteByIdReactive(UUID productId);
  
      @Delete(ifExists = true)
      ReactiveResultSet deleteIfExistsReactive(Product product);
  
      @Delete(entityClass = Product.class, customIfClause = "description = :expectedDescription")
      ReactiveResultSet deleteIfDescriptionMatchesReactive(
          UUID productId, String expectedDescription);
  
      @Select
      MappedReactiveResultSet<Product> findByIdReactive(UUID productId);
  
      @Insert
      ReactiveResultSet saveReactive(Product product);
    }
  }
  