ResourceAvailabilityFlyweight.java

/*
 * RHQ Management Platform
 * Copyright (C) 2005-2010 Red Hat, Inc.
 * All rights reserved.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License, version 2, as
 * published by the Free Software Foundation, and/or the GNU Lesser
 * General Public License, version 2.1, also as published by the Free
 * Software Foundation.
 *
 * This program 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 General Public License and the GNU Lesser General Public License
 * for more details.
 *
 * You should have received a copy of the GNU General Public License
 * and the GNU Lesser General Public License along with this program;
 * if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 */

package org.rhq.core.domain.resource.flyweight;

import java.io.Serializable;

import org.rhq.core.domain.measurement.AvailabilityType;
import org.rhq.core.domain.measurement.ResourceAvailability;

/**
 * This is basically a copy of {@link ResourceAvailability} class, but is linked to the
 * {@link ResourceFlyweight} instead of Resource. This enables us to retain the same API
 * for the flyweights as for the original domain entities.
 * 
 * @author Lukas Krejci
 */
public class ResourceAvailabilityFlyweight implements Serializable {

    private static final long serialVersionUID = 1L;

    private ResourceFlyweight resource;
    private int resourceId;
    private AvailabilityType availabilityType;
    
    public ResourceAvailabilityFlyweight(ResourceFlyweight resource, AvailabilityType type) {
        this.resource = resource;
        this.resourceId = resource.getId();
        this.availabilityType = type;
    }

    public ResourceFlyweight getResource() {
        return resource;
    }

    public void setResource(ResourceFlyweight resource) {
        this.resource = resource;
    }

    public int getResourceId() {
        return resourceId;
    }

    public void setResourceId(int resourceId) {
        this.resourceId = resourceId;
    }

    public AvailabilityType getAvailabilityType() {
        return availabilityType;
    }

    public void setAvailabilityType(AvailabilityType availabilityType) {
        this.availabilityType = availabilityType;
    }

    @Override
    public int hashCode() {
        final int prime = 31;
        int result = 1;
        result = (prime * result) + ((availabilityType == null) ? 0 : availabilityType.hashCode());
        result = (prime * result) + resourceId;
        return result;
    }

    @Override
    public boolean equals(Object obj) {
        if (this == obj) {
            return true;
        }

        if (obj == null || !(obj instanceof ResourceAvailabilityFlyweight)) {
            return false;
        }

        final ResourceAvailabilityFlyweight other = (ResourceAvailabilityFlyweight) obj;

        if (resourceId != other.resourceId) {
            return false;
        }

        if (availabilityType == null) {
            if (other.availabilityType != null) {
                return false;
            }
        } else if (!availabilityType.equals(other.availabilityType)) {
            return false;
        }

        return true;
    }
}