openstack-reddwarf/src/main/java/org/jclouds/openstack/reddwarf/v1/domain/Flavor.java

/*
 * Licensed to jclouds, Inc. (jclouds) under one or more
 * contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  jclouds licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
package org.jclouds.openstack.reddwarf.v1.domain;

import static com.google.common.base.Preconditions.checkNotNull;
import java.beans.ConstructorProperties;
import java.util.List;
import org.jclouds.openstack.v2_0.domain.Link;
import com.google.common.base.Objects;
import com.google.common.base.Objects.ToStringHelper;
import com.google.common.collect.ImmutableList;

/**
 * An Openstack Reddwarf Flavor.
 * 
 * @author Zack Shoylev
 */
public class Flavor implements Comparable<Flavor>{

    private final int id;
    private final String name;
    private final int ram;
    private final List<Link> links;

    @ConstructorProperties({
        "id", "name", "ram", "links"
    })
    protected Flavor(int id, String name, int ram, List<Link> links) {
        this.id = id;
        this.name = checkNotNull(name, "name required");
        this.ram = ram;
        this.links = links;
    }

    /**
     * @return the id of this flavor
     */
    public int getId() {
        return this.id;
    }

    /**
     * @return the name of this flavor
     */
    public String getName() {
        return this.name;
    }

    /**
     * @return the RAM amount for this flavor
     */
    public int getRam() {
        return this.ram;
    }

    /**
     * @return the flavor links for this flavor. These are used during database instance creation.
     */
    public List<Link> getLinks() {
        return this.links;
    }

    @Override
    public int hashCode() {
        return Objects.hashCode(id);
    }

    @Override
    public boolean equals(Object obj) {
        if (this == obj) return true;
        if (obj == null || getClass() != obj.getClass()) return false;
        Flavor that = Flavor.class.cast(obj);
        return Objects.equal(this.id, that.id);
    }

    protected ToStringHelper string() {
        return Objects.toStringHelper(this)
                .add("id", id).add("name", name).add("ram", ram);
    }

    @Override
    public String toString() {
        return string().toString();
    }

    @Override
    public int compareTo(Flavor that) {
        if (that == null)
            return 1;
        if (this == that)
            return 0;
        return this.getId() > that.getId() ? +1 : this.getId() < this.getId() ? -1 : 0;
    }

    public static Builder builder() { 
        return new Builder();
    }

    public Builder toBuilder() { 
        return new Builder().fromFlavor(this);
    }    
    
    public static class Builder {
        protected int id;
        protected String name;
        protected int ram;
        protected List<Link> links;

        /** 
         * @see Flavor#getId()
         */
        public Builder id(int id) {
            this.id = id;
            return this;
        }

        /** 
         * @see Flavor#getName()
         */
        public Builder name(String name) {
            this.name = name;
            return this;
        }

        /** 
         * @see Flavor#getRam()
         */
        public Builder ram(int ram) {
            this.ram = ram;
            return this;
        }

        /** 
         * @see Flavor#getLinks()
         */
        public Builder links(List<Link> links) {
            this.links = ImmutableList.copyOf(links);
            return this;
        }

        public Flavor build() {
            return new Flavor(id, name, ram, links);
        }

        public Builder fromFlavor(Flavor in) {
            return this
                    .id(in.getId())
                    .name(in.getName())
                    .ram(in.getRam())
                    .links(in.getLinks());
        }
    }    
}