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   * "License"); you may not use this file except in compliance
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   *
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   * Unless required by applicable law or agreed to in writing, software
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  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.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.Mapper;
  import com.datastax.oss.driver.api.mapper.annotations.Select;
  import com.datastax.oss.driver.api.mapper.annotations.Update;
  import com.datastax.oss.driver.api.mapper.entity.saving.NullSavingStrategy;
  import com.datastax.oss.driver.api.testinfra.ccm.CcmRule;
  import com.datastax.oss.driver.api.testinfra.requirement.BackendRequirement;
  import com.datastax.oss.driver.api.testinfra.requirement.BackendType;
  import com.datastax.oss.driver.api.testinfra.session.SessionRule;
  import com.datastax.oss.driver.categories.ParallelizableTests;
  import io.reactivex.Flowable;
  import io.reactivex.Single;
  import java.util.UUID;
  import org.junit.Before;
  import org.junit.BeforeClass;
  import org.junit.ClassRule;
  import org.junit.Test;
  import org.junit.experimental.categories.Category;
  import org.junit.rules.RuleChain;
  import org.junit.rules.TestRule;
  
  @Category(ParallelizableTests.class)
  @BackendRequirement(
      type = BackendType.CASSANDRA,
      minInclusive = "3.6",
      description = "Uses UDT fields in IF conditions (CASSANDRA-7423)")
  public class UpdateReactiveIT extends InventoryITBase {
  
    private static CcmRule ccmRule = CcmRule.getInstance();
  
    private static SessionRule<CqlSession> sessionRule = SessionRule.builder(ccmRule).build();
  
    @ClassRule public static TestRule chain = RuleChain.outerRule(ccmRule).around(sessionRule);
  
    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 dseInventoryMapper =
          new UpdateReactiveIT_DseInventoryMapperBuilder(session).build();
      dao = dseInventoryMapper.productDao(sessionRule.keyspace());
    }
  
    @Before
    public void clearProductData() {
      CqlSession session = sessionRule.session();
      session.execute(
          SimpleStatement.builder("TRUNCATE product")
              .setExecutionProfile(sessionRule.slowProfile())
              .build());
    }
  
    @Test
    public void should_update_entity_if_exists_reactive() {
      Flowable.fromPublisher(dao.updateReactive(FLAMETHROWER)).blockingSubscribe();
      assertThat(Flowable.fromPublisher(dao.findByIdReactive(FLAMETHROWER.getId())).blockingSingle())
          .isNotNull();
  
      Product otherProduct =
          new Product(FLAMETHROWER.getId(), "Other description", new Dimensions(1, 1, 1));
      ReactiveResultSet rs = dao.updateIfExistsReactive(otherProduct);
      assertThat(Flowable.fromPublisher(rs).count().blockingGet()).isOne();
      assertThat(
              Single.fromPublisher(rs.getColumnDefinitions()).blockingGet().contains("description"))
          .isFalse();
      assertThat(Single.fromPublisher(rs.wasApplied()).blockingGet()).isTrue();
    }
  
    @Test
    public void should_update_entity_if_condition_is_met_reactive() {
      Flowable.fromPublisher(
              dao.updateReactive(
                  new Product(
                      FLAMETHROWER.getId(), "Description for length 10", new Dimensions(10, 1, 1))))
          .blockingSubscribe();
      assertThat(Flowable.fromPublisher(dao.findByIdReactive(FLAMETHROWER.getId())).blockingSingle())
          .isNotNull();
      Product otherProduct =
          new Product(FLAMETHROWER.getId(), "Other description", new Dimensions(1, 1, 1));
      ReactiveResultSet rs = dao.updateIfLengthReactive(otherProduct, 10);
      ReactiveRow row = Flowable.fromPublisher(rs).blockingSingle();
      assertThat(row.wasApplied()).isTrue();
      assertThat(row.getColumnDefinitions().contains("dimensions")).isFalse();
      assertThat(Single.fromPublisher(rs.getColumnDefinitions()).blockingGet().contains("dimensions"))
          .isFalse();
      assertThat(Single.fromPublisher(rs.wasApplied()).blockingGet()).isTrue();
    }
  
    @Test
    public void should_not_update_entity_if_condition_is_not_met_reactive() {
      Flowable.fromPublisher(
              dao.updateReactive(
                  new Product(
                      FLAMETHROWER.getId(), "Description for length 10", new Dimensions(10, 1, 1))))
          .blockingSubscribe();
      assertThat(Flowable.fromPublisher(dao.findByIdReactive(FLAMETHROWER.getId())).blockingSingle())
          .isNotNull()
          .extracting("description")
          .isEqualTo("Description for length 10");
      ReactiveResultSet rs =
          dao.updateIfLengthReactive(
              new Product(FLAMETHROWER.getId(), "Other description", new Dimensions(1, 1, 1)), 20);
      ReactiveRow row = Flowable.fromPublisher(rs).blockingSingle();
      assertThat(row.wasApplied()).isFalse();
      assertThat(row.getColumnDefinitions().contains("dimensions")).isTrue();
      assertThat(Single.fromPublisher(rs.getColumnDefinitions()).blockingGet().contains("dimensions"))
          .isTrue();
      assertThat(Single.fromPublisher(rs.wasApplied()).blockingGet()).isFalse();
    }
  
    @Mapper
    public interface DseInventoryMapper {
  
      @DaoFactory
      DseProductDao productDao(@DaoKeyspace CqlIdentifier keyspace);
    }
  
    @Dao
    @DefaultNullSavingStrategy(NullSavingStrategy.SET_TO_NULL)
    public interface DseProductDao {
  
      @Update
      ReactiveResultSet updateReactive(Product product);
  
      @Update(ifExists = true)
      ReactiveResultSet updateIfExistsReactive(Product product);
  
      @Update(customIfClause = "dimensions.length = :length")
      ReactiveResultSet updateIfLengthReactive(Product product, int length);
  
      @Select
      MappedReactiveResultSet<Product> findByIdReactive(UUID productId);
    }
  }
  