/*
 * Copyright (c) 2006-2011 Nuxeo SA (http://nuxeo.com/) and others.
 *
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *     bstefanescu
 */
package org.eclipse.ecr.core.event.impl;

import java.rmi.dgc.VMID;
import java.util.ArrayList;
import java.util.HashSet;
import java.util.Iterator;
import java.util.List;
import java.util.Set;

import org.eclipse.ecr.core.event.Event;
import org.eclipse.ecr.core.event.EventBundle;

/**
 * @author <a href="mailto:bs@nuxeo.com">Bogdan Stefanescu</a>
 */
public class EventBundleImpl implements EventBundle {

    private static final long serialVersionUID = 1L;

    // not final to allow modification derived classes
    protected VMID vmid;

    protected final List<Event> events;

    protected final Set<String> eventNames;

    public EventBundleImpl(VMID sourceVMID) {
        events = new ArrayList<Event>();
        eventNames = new HashSet<String>();
        vmid = sourceVMID;
    }

    public EventBundleImpl() {
        this(EventServiceImpl.VMID);
    }


    @Override
    public boolean hasRemoteSource() {
        return !vmid.equals(EventServiceImpl.VMID);
    }

    @Override
    public String getName() {
        if (events.isEmpty()) {
            return null;
        }
        return events.get(0).getContext().getRepositoryName();
    }

    @Override
    public boolean isEmpty() {
        return events.isEmpty();
    }

    @Override
    public Event peek() {
        return events.get(0);
    }

    @Override
    public void push(Event event) {
        events.add(event);
        String eventName = event.getName();
        if (eventName != null) {
            eventNames.add(eventName);
        }
    }

    @Override
    public int size() {
        return events.size();
    }

    @Override
    public Iterator<Event> iterator() {
        return events.iterator();
    }

    @Override
    public VMID getSourceVMID() {
        return vmid;
    }

    @Override
    public boolean containsEventName(String eventName) {
        if (eventName == null) {
            return false;
        }
        return eventNames.contains(eventName);
    }

}