com.openteach.diamond.repository.client.Key.java Source code

Introduction

Here is the source code for com.openteach.diamond.repository.client.Key.java

Source

/**
 * Copyright 2013 openteach
 *
 *  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.openteach.diamond.repository.client;

import java.io.Serializable;

import org.apache.commons.lang.StringUtils;

/**
 * Key of data
 * @author sihai
 *
 */
public class Key implements Serializable {

    /**
     * 
     */
    private static final long serialVersionUID = -1171314496745268310L;

    public static final String NONE_SUB_KEY = "_#none_sub_key_#_";
    public static final long INIT_SEQUENCE = -1L;

    /**
     * 
     */
    private String namespace;

    /**
     * 
     */
    private String key;

    /**
     * 
     */
    private String subKey = NONE_SUB_KEY;

    /**
     * 
     */
    private long sequence = 0;

    public Key() {
    }

    public Key(String namespace, String key) {
        this(namespace, key, NONE_SUB_KEY);
    }

    public Key(String namespace, String key, String subKey) {
        this(namespace, key, NONE_SUB_KEY, INIT_SEQUENCE);
    }

    public Key(String namespace, String key, long sequence) {
        this(namespace, key, NONE_SUB_KEY, sequence);
    }

    public Key(String namespace, String key, String subKey, long sequence) {
        this.namespace = namespace;
        this.key = key;
        this.subKey = subKey;
        this.sequence = sequence;
    }

    public String getNamespace() {
        return namespace;
    }

    public void setNamespace(String namespace) {
        this.namespace = namespace;
    }

    public String getKey() {
        return key;
    }

    public void setKey(String key) {
        this.key = key;
    }

    public String getSubKey() {
        return subKey;
    }

    public void setSubKey(String subKey) {
        this.subKey = subKey;
    }

    public long getSequence() {
        return sequence;
    }

    public void setSequence(long sequence) {
        this.sequence = sequence;
    }

    public void incSequence() {
        this.sequence += 1;
    }

    @Override
    public int hashCode() {
        int code = 32 * namespace.hashCode() + 1;
        code += 32 * key.hashCode();
        if (null != subKey) {
            code += 32 * subKey.hashCode();
        }
        code += sequence;
        return code;
    }

    @Override
    public boolean equals(Object obj) {

        if (obj == this) {
            return true;
        }

        if (null == obj) {
            return false;
        }

        return StringUtils.equals(namespace, ((Key) obj).namespace) && StringUtils.equals(key, ((Key) obj).key)
                && StringUtils.equals(subKey, ((Key) obj).subKey) && sequence == ((Key) obj).sequence;
    }

    @Override
    public String toString() {
        return String.format("%s:%s:%s:%d", namespace, key, subKey, sequence);
    }
}