Thanks to your reply, this problem has been solved.
I was making a mistake which uses AbstractType of a version 1.2.9.
2013/9/6 Dave Brosius <dbros...@mebigfatguy.com>
> I think your class is missing a required
>
> public TypeSerializer<Void> getSerializer() {}
>
> method
>
>
> This is what you need to derive from
>
>
> https://git-wip-us.apache.org/repos/asf?p=cassandra.git;a=blob;f=src/java/org/apache/cassandra/db/marshal/AbstractType.java;h=74fe446319c199433b47d3ae60fc4d644e86b653;hb=03045ca22b11b0e5fc85c4fabd83ce6121b5709b
>
>
>
>
> On 09/04/2013 09:14 AM, Katsutoshi wrote:
>
> package my.marshal;
>
> import java.nio.ByteBuffer;
>
> import org.apache.cassandra.db.marshal.AbstractType;
> import org.apache.cassandra.db.marshal.MarshalException;
> import org.apache.cassandra.utils.ByteBufferUtil;
>
> public class DummyType extends AbstractType<Void> {
>
> public static final DummyType instance = new DummyType();
>
> private DummyType(){
> }
>
> public Void compose(ByteBuffer bytes){
> return null;
> }
>
> public ByteBuffer decompose(Void value){
> return ByteBufferUtil.EMPTY_BYTE_BUFFER;
> }
>
> public int compare(ByteBuffer o1, ByteBuffer o2){
> return 0;
> }
>
> public String getString(ByteBuffer bytes){
> return "";
> }
>
> public ByteBuffer fromString(String source) throws MarshalException{
> if(!source.isEmpty()) throw new
> MarshalException(String.format("'%s' is not empty", source));
> return ByteBufferUtil.EMPTY_BYTE_BUFFER;
> }
>
> public void validate(ByteBuffer bytes) throws MarshalException{
> }
> }
>
>
>
