[infinispan-issues] [JBoss JIRA] (IPROTO-33) ClassCastException with Array of Enums

[Adrian Nistor (JIRA)]

     [ https://issues.jboss.org/browse/IPROTO-33?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Adrian Nistor updated IPROTO-33:
--------------------------------
    Fix Version/s: 4.1.1.Final


> ClassCastException with Array of Enums
> --------------------------------------
>
>                 Key: IPROTO-33
>                 URL: https://issues.jboss.org/browse/IPROTO-33
>             Project: Infinispan ProtoStream
>          Issue Type: Bug
>    Affects Versions: 4.0.0.Alpha5
>            Reporter: Gustavo Fernandes
>            Assignee: Adrian Nistor
>             Fix For: 4.1.1.Final
>
>
> The entity is defined as:
> {code:java}
> public class Account extends BaseMessage {
>    public enum Currency {
>       EUR, GBP, USD, BRL
>    }
>   ...
>    private Currency[] currencies;
>    ...
> }
> {code}
> Protofile:
> {code}
> message Account {
>   ... 
>   /* @TypeId(43) */
>    enum Currency {
>       EUR = 0;
>       GBP = 1;
>      ...
>    }
>    repeated Currency currencies = 6;
>    ...
> }
> {code}
> Marshaller:
> {code:java}
> public class AccountMarshaller implements MessageMarshaller<Account> {
>    ...
>  @Override
>    public Account readFrom(ProtoStreamReader reader) throws IOException {
>      ...
>       Account.Currency[] currencies = reader.readArray("currencies", Account.Currency.class);
>       Account account = new Account();
>       ...
>       account.setCurrencies(currencies);
>       return account;
>    }
>    @Override
>    public void writeTo(ProtoStreamWriter writer, Account account) throws IOException {
>       ...
>       writer.writeArray("currencies", account.getCurrencies(), Account.Currency.class);
>    }
> }
> {code}
> When trying to marshal and unmarshall a message:
> {code:java}
> Account account = ...
> SerializationContext context = ...
> byte[] bytes = ProtobufUtil.toWrappedByteArray(context, account);
> // Throws CCE
> Account acc = ProtobufUtil.fromWrappedByteArray(context, bytes);
> {code}
> {noformat}
> java.lang.ClassCastException: java.lang.Long cannot be cast to [B
> 	at org.infinispan.protostream.impl.ProtoStreamReaderImpl.readCollection(ProtoStreamReaderImpl.java:374)
> 	at org.infinispan.protostream.impl.ProtoStreamReaderImpl.readArray(ProtoStreamReaderImpl.java:470)
> 	at org.infinispan.protostream.domain.marshallers.AccountMarshaller.readFrom(AccountMarshaller.java:33)
> 	at org.infinispan.protostream.domain.marshallers.AccountMarshaller.readFrom(AccountMarshaller.java:14)
> 	at org.infinispan.protostream.impl.MessageMarshallerDelegate.unmarshall(MessageMarshallerDelegate.java:113)
> 	at org.infinispan.protostream.WrappedMessage.readMessage(WrappedMessage.java:306)
> 	at org.infinispan.protostream.ProtobufUtil.fromWrappedByteArray(ProtobufUtil.java:154)
> 	at org.infinispan.protostream.ProtobufUtil.fromWrappedByteArray(ProtobufUtil.java:149)
> {noformat}



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