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/*
 * Copyright (c) MuleSoft, Inc.  All rights reserved.  http://www.mulesoft.com
 * The software in this package is published under the terms of the CPAL v1.0
 * license, a copy of which has been included with this distribution in the
 * LICENSE.txt file.
 */
package org.mule.config.spring.parsers.generic;

import org.mule.config.spring.parsers.AbstractMuleBeanDefinitionParser;
import org.mule.util.StringUtils;

import java.util.concurrent.atomic.AtomicInteger;

import org.w3c.dom.Element;

public class AutoIdUtils
{

    public static final String ATTRIBUTE_ID = AbstractMuleBeanDefinitionParser.ATTRIBUTE_ID;
    public static final String ATTRIBUTE_NAME = AbstractMuleBeanDefinitionParser.ATTRIBUTE_NAME;
    private static final AtomicInteger counter = new AtomicInteger(0);
    public static final String PREFIX = "org.mule.autogen.";

    public static boolean blankAttribute(Element element, String attribute)
    {
        return StringUtils.isBlank(element.getAttribute(attribute));
    }

    public static void ensureUniqueId(Element element, String type)
    {
        if (null != element && blankAttribute(element, ATTRIBUTE_ID))
        {
            if (blankAttribute(element, ATTRIBUTE_NAME))
            {
                element.setAttribute(ATTRIBUTE_ID, uniqueValue(PREFIX + type));
            }
            else
            {
                element.setAttribute(ATTRIBUTE_ID, element.getAttribute(ATTRIBUTE_NAME));
            }
        }
    }

    public static String getUniqueName(Element element, String type)
    {
        if (!blankAttribute(element, ATTRIBUTE_NAME))
        {
            return element.getAttribute(ATTRIBUTE_NAME);
        }
        else if (!blankAttribute(element, ATTRIBUTE_ID))
        {
            return element.getAttribute(ATTRIBUTE_ID);
        }
        else
        {
            return uniqueValue(PREFIX + type);
        }
    }

    public static String uniqueValue(String value)
    {
        return value + "." + counter.incrementAndGet();
    }

    public static void forceUniqueId(Element element, String type)
    {
        if (null != element)
        {
            String id = uniqueValue(PREFIX + type);
            element.setAttribute(ATTRIBUTE_ID, id);
            element.setAttribute(ATTRIBUTE_NAME, id);
        }
    }

}




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