ClassCastException when using Slice<T> or Page<T> in SpannerRepository

[timopick]

Issue When using Slice or Page in the repository I get a ClassCastException.

java.lang.ClassCastException: class x.y.z.MyEntityClass cannot be cast to class org.springframework.data.domain.Page (x.y.z.MyEntityClass and org.springframework.data.domain.Page are in unnamed module of loader 'app')
    at jdk.proxy2/jdk.proxy2.$Proxy76.findByProcessingDateTimeLessThanEqual(Unknown Source)

Example:

public interface MyRepository extends SpannerRepository<MyEntityClass, byte[]> {
    Page<MyEntityClass> findAllByProcessingDateTimeLessThanEqual(final Timestamp processingDateLte, final Pageable pageable);
}

When I change it to List, I get a result without error.

Dependencies:

dependencyManagement {
    imports {
        mavenBom "com.google.cloud:spring-cloud-gcp-dependencies:2.0.4"
    }
}

dependencies {
...
    implementation "com.google.cloud:spring-cloud-gcp-starter-data-spanner"
}

[zhumin8]

Thanks for capturing this.

[amrnarvar]

Any ETA for this fix?

[elefeint]

@armandomiani You can control pagination by passing Pageable parameters to custom query methods, but Page or Slice return types are not supported (except in findAll() method, which does not suit your usecase). As you have found, List is the alternative.

We'll take this as a feature request.

[Alos]

I too have found this limitation:

https://github.com/Alos/SpringCloudGCPPageIssue