ListItemMarshaller.java

package org.aplikator.client.shared.rpc.marshaller;

import java.io.Serializable;

import org.aplikator.client.shared.data.ListItem;
import org.aplikator.client.shared.rpc.marshaller.DataMarshallingUtils.DataType;
import org.jboss.errai.marshalling.client.api.MarshallingSession;
import org.jboss.errai.marshalling.client.api.annotations.ClientMarshaller;
import org.jboss.errai.marshalling.client.api.annotations.ImplementationAliases;
import org.jboss.errai.marshalling.client.api.annotations.ServerMarshaller;
import org.jboss.errai.marshalling.client.api.json.EJObject;
import org.jboss.errai.marshalling.client.api.json.EJValue;
import org.jboss.errai.marshalling.client.marshallers.AbstractNullableMarshaller;

@ClientMarshaller(ListItem.class)
@ServerMarshaller(ListItem.class)
@ImplementationAliases({ListItem.Default.class})
public class ListItemMarshaller extends AbstractNullableMarshaller<ListItem> {

	/*@Override
    public Class<ListItem> getTypeHandled() {
		return ListItem.class;
	}*/

    @Override
    public ListItem[] getEmptyArray() {
        return new ListItem[0];
    }

    @Override
    public ListItem doNotNullDemarshall(EJValue o, MarshallingSession ctx) {
        if (o.isObject() != null) {
            EJObject ejObject = o.isObject();
            String name = ejObject.get("name").isString().stringValue();
            if (ejObject.containsKey("value")) {
                DataType dt = DataMarshallingUtils.DataType.lookup(ejObject.get("value"));
                if (dt != null) {
                    Serializable serialized = dt.demarshall(ejObject.get("value"), ctx);
                    return new ListItem.Default(serialized, name);
                } else
                    throw new UnsupportedOperationException("unsupported type '" + dt + "'");
            } else
                throw new IllegalStateException("expected value key ");
        } else
            return null;
    }

    @Override
    public String doNotNullMarshall(ListItem o, MarshallingSession ctx) {
        StringBuilder builder = new StringBuilder().append('{');
        DataType dt = DataMarshallingUtils.DataType.lookup(o.getValue());
        if (dt != null) {
            MarshallingUtils.key("value", builder).append(':');
            dt.marshall(builder, o.getValue(), ctx);
        } else {
            throw new UnsupportedOperationException("unsupported type '" + dt + "'");
        }
        builder.append(',');
        MarshallingUtils.string("name", o.getName(), builder);
        builder.append('}');
        return builder.toString();
    }
}