WSO2 Carbon Component Web Service

WSO2 Carbon Component Web Service

package org.wso2.carbon.testService;

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.util.ArrayList;
import java.util.List;

import org.wso2.carbon.context.CarbonContext;
import org.wso2.carbon.context.RegistryType;
import org.wso2.carbon.registry.api.Registry;
import org.wso2.carbon.registry.api.RegistryException;
import org.wso2.carbon.registry.api.Resource;
import org.wso2.carbon.testService.data.User;

public class MyService {
    Registry registry;
    List<User> userList = new ArrayList<User>();
    private static final String ORDER_PATH = "order_location";

    public MyService() {
        registry = CarbonContext.getThreadLocalCarbonContext().getRegistry(
                RegistryType.valueOf(RegistryType.LOCAL_REPOSITORY.toString()));
    }

    public User addUser(String aName, int anAge) {
        User temp = new User(aName, anAge);
        userList.add(temp);

        Resource tempRes;
        try {
            tempRes = registry.newResource();
            tempRes.setContent(serialize(userList));
            registry.put(ORDER_PATH, tempRes);
        } catch (Exception e) {
            System.out.println(e.getMessage());
        }
        System.out.println("Completed");

        return temp;
    }

    public List<User> displayUsers() {

        Resource getUserRes;
        try {
            getUserRes = registry.get(ORDER_PATH);
            userList = (List<User>) deserialize((byte[]) getUserRes.getContent());
        } catch (RegistryException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (ClassNotFoundException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }

        return userList;
    }

    private static byte[] serialize(Object obj) throws IOException {
        ByteArrayOutputStream b = new ByteArrayOutputStream();
        ObjectOutputStream o = new ObjectOutputStream(b);
        o.writeObject(obj);
        return b.toByteArray();
    }

    private static Object deserialize(byte[] bytes) throws IOException, ClassNotFoundException {
        ByteArrayInputStream b = new ByteArrayInputStream(bytes);
        ObjectInputStream o = new ObjectInputStream(b);
        return o.readObject();
    }

}