Getting MappingException when reading TINYINT value from H2 database as boolean/Boolean

Bug Report

I am using R2DBC H2 for integration testing my reactive application (which is based on Spring Webflux , Java). Getting no issue when saving PrepTaskEntity but when trying to read, getting the following error. On debugging through the classes, it seems that the tiny int value is being read as Bytes and BooleanCodec of H2 is unable to decode it.

Versions

• Driver: io.r2dbc:r2dbc-h2:0.8.4.RELEASE (Spring boot 2.3.2.RELEASE)
• Database: H2
• Java: 11
• OS: Mac

Current Behavior

Stack trace

org.springframework.data.mapping.MappingException: Could not read property @org.springframework.data.relational.core.mapping.Column(value="is_active")private boolean com.example.demosvc.persistence.entities.PrepTaskEntity.isActive from result set!
	at org.springframework.data.r2dbc.convert.MappingR2dbcConverter.readFrom(MappingR2dbcConverter.java:172) ~[spring-data-r2dbc-1.1.2.RELEASE.jar:1.1.2.RELEASE]
	Suppressed: reactor.core.publisher.FluxOnAssembly$OnAssemblyException: 
Error has been observed at the following site(s):
	|_ checkpoint ⇢ Handler com.example.demosvc.controllers.PrepTaskController#getPrepTasksForGivenBU(String) [DispatcherHandler]
	|_ checkpoint ⇢ com.example.demosvc.filters.TenancyContextFilter [DefaultWebFilterChain]
	|_ checkpoint ⇢ HTTP GET "/sites/BU-002/prepTasks" [ExceptionHandlingWebHandler]
Stack trace:
		at org.springframework.data.r2dbc.convert.MappingR2dbcConverter.readFrom(MappingR2dbcConverter.java:172) ~[spring-data-r2dbc-1.1.2.RELEASE.jar:1.1.2.RELEASE]
		at org.springframework.data.r2dbc.convert.MappingR2dbcConverter.read(MappingR2dbcConverter.java:133) ~[spring-data-r2dbc-1.1.2.RELEASE.jar:1.1.2.RELEASE]
		at org.springframework.data.r2dbc.convert.MappingR2dbcConverter.read(MappingR2dbcConverter.java:116) ~[spring-data-r2dbc-1.1.2.RELEASE.jar:1.1.2.RELEASE]
		at org.springframework.data.r2dbc.convert.EntityRowMapper.apply(EntityRowMapper.java:46) ~[spring-data-r2dbc-1.1.2.RELEASE.jar:1.1.2.RELEASE]
		at org.springframework.data.r2dbc.convert.EntityRowMapper.apply(EntityRowMapper.java:29) ~[spring-data-r2dbc-1.1.2.RELEASE.jar:1.1.2.RELEASE]
		at io.r2dbc.h2.H2Result.lambda$map$0(H2Result.java:67) ~[r2dbc-h2-0.8.4.RELEASE.jar:0.8.4.RELEASE]
		at reactor.core.publisher.FluxMap$MapSubscriber.onNext(FluxMap.java:100) ~[reactor-core-3.3.8.RELEASE.jar:3.3.8.RELEASE]
		at reactor.core.publisher.FluxOnErrorResume$ResumeSubscriber.onNext(FluxOnErrorResume.java:73) ~[reactor-core-3.3.8.RELEASE.jar:3.3.8.RELEASE]
...
Caused by: org.springframework.core.convert.ConverterNotFoundException: No converter found capable of converting from type [java.lang.Byte] to type [boolean]
	at org.springframework.core.convert.support.GenericConversionService.handleConverterNotFound(GenericConversionService.java:321) ~[spring-core-5.2.8.RELEASE.jar:5.2.8.RELEASE]
	at org.springframework.core.convert.support.GenericConversionService.convert(GenericConversionService.java:194) ~[spring-core-5.2.8.RELEASE.jar:5.2.8.RELEASE]
	at org.springframework.core.convert.support.GenericConversionService.convert(GenericConversionService.java:174) ~[spring-core-5.2.8.RELEASE.jar:5.2.8.RELEASE]
	at org.springframework.data.r2dbc.convert.MappingR2dbcConverter.getPotentiallyConvertedSimpleRead(MappingR2dbcConverter.java:263) ~[spring-data-r2dbc-1.1.2.RELEASE.jar:1.1.2.RELEASE]
	at org.springframework.data.r2dbc.convert.MappingR2dbcConverter.readValue(MappingR2dbcConverter.java:187) ~[spring-data-r2dbc-1.1.2.RELEASE.jar:1.1.2.RELEASE]
	at org.springframework.data.r2dbc.convert.MappingR2dbcConverter.readFrom(MappingR2dbcConverter.java:169) ~[spring-data-r2dbc-1.1.2.RELEASE.jar:1.1.2.RELEASE]
	at org.springframework.data.r2dbc.convert.MappingR2dbcConverter.read(MappingR2dbcConverter.java:133) ~[spring-data-r2dbc-1.1.2.RELEASE.jar:1.1.2.RELEASE]
	at org.springframework.data.r2dbc.convert.MappingR2dbcConverter.read(MappingR2dbcConverter.java:116) ~[spring-data-r2dbc-1.1.2.RELEASE.jar:1.1.2.RELEASE]
	at org.springframework.data.r2dbc.convert.EntityRowMapper.apply(EntityRowMapper.java:46) ~[spring-data-r2dbc-1.1.2.RELEASE.jar:1.1.2.RELEASE]
	at org.springframework.data.r2dbc.convert.EntityRowMapper.apply(EntityRowMapper.java:29) ~[spring-data-r2dbc-1.1.2.RELEASE.jar:1.1.2.RELEASE]
	at io.r2dbc.h2.H2Result.lambda$map$0(H2Result.java:67) ~[r2dbc-h2-0.8.4.RELEASE.jar:0.8.4.RELEASE]
...

Table schema

Input Code

CREATE TABLE `prep_task` (
  `id` SERIAL,
  `external_id` VARCHAR(45) NOT NULL,
  `name` VARCHAR(45) NOT NULL,
  `description` VARCHAR(100) NULL,
  `is_active` TINYINT,
  PRIMARY KEY (`id`)
);

Steps to reproduce

Input Code

@Table("prep_task")
public class PrepTaskEntity implements Persistable<Long> {
  @Id
  @Column("id")
  private Long id;

  @Column("external_id")
  private String externalId;

  @Column("name")
  private String name;

  @Column("description")
  private String description;

  @Column("is_active")
  private boolean isActive;

  public Long getId() {
    return id;
  }

  public void setId(Long id) {
    this.id = id;
  }

  public String getExternalId() {
    return externalId;
  }

  public void setExternalId(String externalId) {
    this.externalId = externalId;
  }

  public String getName() {
    return name;
  }

  public void setName(String name) {
    this.name = name;
  }

  public String getDescription() {
    return description;
  }

  public void setDescription(String description) {
    this.description = description;
  }

  public boolean isActive() {
    return isActive;
  }

  public void setActive(boolean active) {
    isActive = active;
  }

  @Override
  public boolean isNew() {
    return id == null;
  }


}

Expected behavior/code

Should be able to read the is_active column value in the boolean isActive.

Additional context

H2 Connection Config (using Routing Connection Factory because of multi-tenancy)

@Configuration
@Profile(Application.Profiles.INTEGRATION_TEST)
public class H2ConnectionConfig extends AbstractR2dbcConfiguration {

  private final R2dbcConfigProperties r2dbcConfigProperties;

  @Autowired
  public H2ConnectionConfig(R2dbcConfigProperties r2dbcConfigProperties) {
    this.r2dbcConfigProperties = r2dbcConfigProperties;
  }

  @Override
  @Bean
  public ConnectionFactory connectionFactory() {
    RoutingConnectionFactory connectionFactory = new RoutingConnectionFactory();
    Map<String, ConnectionFactory> factories = new HashMap<>();
    H2ConnectionConfiguration.Builder configurationBuilder = H2ConnectionConfiguration.builder()
        .property(H2ConnectionOption.MODE, "MySQL")
        .property(H2ConnectionOption.DB_CLOSE_DELAY, "-1")
        .property(H2ConnectionOption.DB_CLOSE_ON_EXIT, "false");
    for (String tenant : r2dbcConfigProperties.getTenants()) {
      String databaseName = r2dbcConfigProperties.getDbPrefix() + tenant;
      factories.put(tenant, new H2ConnectionFactory(configurationBuilder.inMemory(databaseName).build()));
    }
    connectionFactory.setTargetConnectionFactories(factories);
    connectionFactory.setDefaultTargetConnectionFactory(factories.get("default"));
    return connectionFactory;
  }

}

[abhinaba-chakraborty-by]

@mp911de My bad. Missed that in the stacktrace. Thought to omit the unnecessary ones (which had the trace from Reactor classes). Adding that.

[abhinaba-chakraborty-by]

Thanks @mp911de for the guide.