Spring Integration JdbcMessageStore casting error - spring-integration

Question

I am trying to create service that will read some data from remote server and process them using Spring Integration.
I have class that extends ArrayList, because I need to keep pointer to other page, so I can read it in next remote call. I set up release strategy to collect all these pages, until there is no pointer for the next page.
Here is definition of class:
public class CustomList extends ArrayList<DataInfo>
{
private String nextCursor;
// Methods omitted for readability
}
Everything worked fine, until I setup JdbcMessageStore in Aggregator, so I can keep messages in case of service shutdown.
Problem on which I come across is that in my release strategy class I cast my list class to same class (because message group does not define type), this exceptions is raised:
java.lang.ClassCastException: com.example.CustomList cannot be cast to com.example.CustomList
This is my release strategy class:
#Component
public class CursorReleaseStrategy implements ReleaseStrategy
{
#Override
public boolean canRelease(MessageGroup group)
{
return group.getMessages().stream()
.anyMatch(message -> ((CustomList) message.getPayload()).getNextCursor() == null);
}
}
If I remove message store, everything works fine, but the problem is that I need message store.
I am using spring boot 2.1.6 and Spring Integration DSL for creating this flow.
From what I read, this error happens because of different class loaders, but this I do from the same application.
Is there anything more that I need to configure for this to work_

Answer 1

Almost certainly a class loader issue; you can find which class loader loads each component (message store, release strategy) by injecting them into a bean and calling getClass().getClassLoader().

Answer 2

When application has been packaged in jar, there was such error.
So to fix the problem I created two beans, depending on profile.
For example:
#Profile("!prod")
#Bean
public MessageGroupStore messageStore(DataSource dataSource)
{
JdbcMessageStore jdbcMessageStore = new JdbcMessageStore(dataSource);
jdbcMessageStore.setDeserializer(inputStream -> {
ConfigurableObjectInputStream objectInputStream = new ConfigurableObjectInputStream(inputStream, Thread.currentThread().getContextClassLoader());
try {
return (Message<?>) objectInputStream.readObject();
} catch (ClassNotFoundException var4) {
throw new NestedIOException("Failed to deserialize object type", var4);
}
});
return jdbcMessageStore;
}
#Profile("prod")
#Bean
public MessageGroupStore prodMessageStore(DataSource dataSource)
{
return new JdbcMessageStore(dataSource);
}