SerializableSubscription.java

/*
 * JBoss, Home of Professional Open Source.
 * Copyright 2012, Red Hat, Inc., and individual contributors
 * as indicated by the @author tags. See the copyright.txt file in the
 * distribution for a full listing of individual contributors.
 *
 * This is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation; either version 2.1 of
 * the License, or (at your option) any later version.
 *
 * This software is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this software; if not, write to the Free
 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
 */

package org.jboss.capedwarf.prospectivesearch;

import java.io.Externalizable;
import java.io.IOException;
import java.io.ObjectInput;
import java.io.ObjectOutput;

import com.google.appengine.api.prospectivesearch.Subscription;

/**
 * @author <a href="mailto:ales.justin@jboss.org">Ales Justin</a>
 */
public class SerializableSubscription implements Externalizable {
    private transient Subscription subscription;

    public SerializableSubscription() {
        //serialization only
    }

    public SerializableSubscription(Subscription subscription) {
        this.subscription = subscription;
    }

    public Subscription getSubscription() {
        return subscription;
    }

    public void writeExternal(ObjectOutput out) throws IOException {
        out.writeUTF(subscription.getId());
        out.writeUTF(subscription.getQuery());
        out.writeLong(subscription.getExpirationTime());
        final Subscription.State state = subscription.getState();
        out.writeInt(state != null ? state.ordinal() : -1);
        String errorMessage = subscription.getErrorMessage();
        out.writeBoolean(errorMessage != null);
        if (errorMessage != null) {
            out.writeUTF(errorMessage);
        }
    }

    public void readExternal(ObjectInput in) throws IOException, ClassNotFoundException {
        final String id = in.readUTF();
        final String query = in.readUTF();
        final long expirationTime = in.readLong();
        final int ordinal = in.readInt();
        final Subscription.State state = (ordinal >= 0) ? Subscription.State.values()[ordinal] : null;
        final boolean exists = in.readBoolean();
        final String errorMessage = (exists ? in.readUTF() : null);
        subscription = new Subscription(id, query, expirationTime, state, errorMessage);
    }
}