org.jclouds.openstack.marconi.v1.domain.Queue.java Source code

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Here is the source code for org.jclouds.openstack.marconi.v1.domain.Queue.java

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/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF 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.marconi.v1.domain;

import com.google.common.base.MoreObjects;
import com.google.common.base.Objects;
import com.google.common.base.Optional;
import org.jclouds.javax.annotation.Nullable;

import java.util.Map;

import static com.google.common.base.Preconditions.checkNotNull;

/**
 * A queue.
 */
public class Queue {

    private final String name;
    private final Map<String, String> metadata;

    protected Queue(String name, @Nullable Map<String, String> metadata) {
        this.name = checkNotNull(name, "name required");
        this.metadata = metadata;
    }

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

    /**
     * @return The key/value metadata for this queue.
     */
    public Optional<Map<String, String>> getMetadata() {
        return Optional.fromNullable(metadata);
    }

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

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

    protected MoreObjects.ToStringHelper string() {
        return MoreObjects.toStringHelper(this).omitNullValues().add("name", name).add("metadata", metadata);
    }

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

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

    public Builder toBuilder() {
        return new ConcreteBuilder().fromMessage(this);
    }

    public abstract static class Builder {
        protected abstract Builder self();

        protected String name;
        protected Map<String, String> metadata;

        /**
         * @param name The name of this queue.
         */
        public Builder name(String name) {
            this.name = name;
            return self();
        }

        /**
         * @param metadata The key/value metadata for this queue.
         */
        public Builder metadata(Map<String, String> metadata) {
            this.metadata = metadata;
            return self();
        }

        public Queue build() {
            return new Queue(name, metadata);
        }

        public Builder fromMessage(Queue in) {
            return this.name(in.getName()).metadata(in.getMetadata().orNull());
        }
    }

    private static class ConcreteBuilder extends Builder {
        @Override
        protected ConcreteBuilder self() {
            return this;
        }
    }

}