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    • com.univocity.api.config.OrderedProperties Maven / Gradle / Ivy

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    /*
 * Copyright (c) 2013 Univocity Software Pty Ltd. All rights reserved.
 * This file is subject to the terms and conditions defined in file
 * 'LICENSE.txt', which is part of this source code package.
 */

package com.univocity.api.config;

import java.util.*;

/**
 * An override over {@link java.util.Properties} to return properties in the order they are defined in the file.
 *
 * @author Univocity Software Pty Ltd - [email protected]
 */
public class OrderedProperties extends Properties {

	private static final long serialVersionUID = 4335376309848461398L;

	private final ArrayList propertySequence;

	/**
	 * Creates a new instances of this ordered {@code Properties} object.
	 */
	public OrderedProperties() {
		propertySequence = new ArrayList();
	}

	@Override
	public Enumeration propertyNames() {
		return Collections.enumeration(propertySequence);
	}

	@Override
	public Object put(Object key, Object value) {
		propertySequence.remove(key);
		propertySequence.add(key);
		return super.put(key, value);
	}

	@Override
	public Object remove(Object key) {
		propertySequence.remove(key);
		return super.remove(key);
	}
}    
    
    
    

    




    
    
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