com.smoketurner.notification.application.riak.CursorObject.java Source code

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Here is the source code for com.smoketurner.notification.application.riak.CursorObject.java

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/**
 * Copyright 2016 Smoke Turner, LLC.
 *
 * Licensed 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 com.smoketurner.notification.application.riak;

import java.util.Objects;
import com.basho.riak.client.api.annotations.RiakBucketName;
import com.basho.riak.client.api.annotations.RiakContentType;
import com.basho.riak.client.api.annotations.RiakKey;
import com.basho.riak.client.api.annotations.RiakLastModified;
import com.basho.riak.client.api.annotations.RiakTombstone;
import com.basho.riak.client.api.annotations.RiakVClock;
import com.basho.riak.client.api.annotations.RiakVTag;
import com.basho.riak.client.api.cap.VClock;
import com.fasterxml.jackson.annotation.JsonCreator;
import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
import com.fasterxml.jackson.annotation.JsonInclude;
import com.fasterxml.jackson.annotation.JsonProperty;
import com.google.common.base.MoreObjects;
import com.google.common.collect.ComparisonChain;
import com.google.common.collect.Ordering;

@JsonIgnoreProperties(ignoreUnknown = true)
@JsonInclude(JsonInclude.Include.NON_NULL)
public final class CursorObject implements Comparable<CursorObject> {

    @RiakBucketName
    private final String bucketName = "cursors";

    @RiakKey
    private String key;

    @RiakVClock
    private VClock vclock;

    @RiakTombstone
    private boolean tombstone;

    @RiakContentType
    private String contentType;

    @RiakLastModified
    private Long lastModified;

    @RiakVTag
    private String vtag;

    private long value;

    /**
     * Constructor
     */
    public CursorObject() {
        // needed to handle tombstones
    }

    /**
     * Constructor
     *
     * @param key
     * @param value
     */
    @JsonCreator
    public CursorObject(@JsonProperty("key") final String key, @JsonProperty("value") final long value) {
        this.key = Objects.requireNonNull(key);
        this.value = value;
    }

    @JsonProperty
    public String getKey() {
        return key;
    }

    @JsonProperty
    public long getValue() {
        return value;
    }

    @JsonProperty
    public void setValue(final long value) {
        this.value = value;
    }

    @Override
    public boolean equals(final Object obj) {
        if (this == obj) {
            return true;
        }
        if ((obj == null) || (getClass() != obj.getClass())) {
            return false;
        }

        final CursorObject other = (CursorObject) obj;
        return Objects.equals(value, other.value);
    }

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

    @Override
    public String toString() {
        return MoreObjects.toStringHelper(this).add("key", key).add("value", value).toString();
    }

    @Override
    public int compareTo(final CursorObject that) {
        return ComparisonChain.start().compare(this.value, that.value, Ordering.natural().reverse()).result();
    }
}