com.adobe.fontengine.SparseArray Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of aem-sdk-api Show documentation
The Adobe Experience Manager SDK
There is a newer version: 2024.11.18751.20241128T090041Z-241100
/*
*
*	File: SparseArray.java
*
*
*	ADOBE CONFIDENTIAL
*	___________________
*
*	Copyright 2005 Adobe Systems Incorporated
*	All Rights Reserved.
*
*	NOTICE: All information contained herein is, and remains the property of
*	Adobe Systems Incorporated and its suppliers, if any. The intellectual
*	and technical concepts contained herein are proprietary to Adobe Systems
*	Incorporated and its suppliers and may be covered by U.S. and Foreign
*	Patents, patents in process, and are protected by trade secret or
*	copyright law. Dissemination of this information or reproduction of this
*	material is strictly forbidden unless prior written permission is obtained
*	from Adobe Systems Incorporated.
*
*/

package com.adobe.fontengine;

import java.io.Serializable;
import java.util.AbstractList;
import java.util.HashMap;

/**
 * SparseArray
 */
// TODO_sgill - better implementation
final public class SparseArray extends AbstractList implements Serializable
{
    /* Serialization signature is explicitly set and should be 
     * incremented on each release to prevent compatibility.
     */
    static final long serialVersionUID = 1;
    
    HashMap entries;

    public SparseArray() {
        super();
        entries = new HashMap();
    }

    public Object get(int index)
    {
        Entry entry = (Entry) entries.get(new Integer(index));
        return entry == null ? null : entry.value;
    }

    public int size()
    {
        return entries.size();
    }

    public void add(int index, Object element)
    {
        entries.put(new Integer(index), new Entry(index, element));
    }

    public Object remove(int index)
    {
        return entries.remove(new Integer(index));
    }

    public Object set(int index, Object element)
    {
        Entry entry = (Entry) entries.get(new Integer(index));
        Object originalElement = entry.value;
        entry.value = element;
        return originalElement;
    }

    public boolean equals(Object obj)
    {
        if (obj == null)
        {
            return false;
        }
        if (obj == this)
        {
            return true;
        }
        if (!(obj instanceof SparseArray))
        {
            return false;
        }
        return entries.equals(((SparseArray) obj).entries);
    }

    public int hashCode()
    {
        return entries.hashCode();
    }
    
    
    static private class Entry implements Serializable
    {
        static final long serialVersionUID = 1;

        int index;
        Object value;
        
        Entry(int index, Object value)
        {
            this.index = index;
            this.value = value;
        }

        public boolean equals(Object obj)
        {
            if (obj == null)
            {
                return false;
            }
            if (obj == this)
            {
                return true;
            }
            if (!(obj instanceof Entry))
            {
                return false;
            }
            return value.equals(((Entry) obj).value);
        }

        public int hashCode()
        {
            return value.hashCode();
        }
    }
}