public class PrefixCustomSequence extends TableSequence implements SessionCustomizer {
    private String prefix;

    public PrefixCustomSequence(String name, String prefix) {
        super(name);
        this.prefix=prefix;
    }

    @Override
    public Object getGeneratedValue(Accessor accessor,
                                    AbstractSession writeSession, String seqName) {
        Object value=super.getGeneratedValue(accessor,writeSession,seqName)
        return prefix+"_"+value.toString();
    }

....
    public void customize(Session session) throws Exception {
        String idPrefix= (String) session.getProperty("com.property.idPrefix");
        PrefixCustomSequence sequence = new PrefixCustomSequence("prefix-custom",idPrefix);
        session.getLogin().addSequence(sequence);
    }
}