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package com.sun.tools.xjc.reader.dtd.bindinfo;

import org.w3c.dom.Element;
import org.xml.sax.Locator;

class DOMLocator {
    private static final String locationNamespace =
        "http://www.sun.com/xmlns/jaxb/dom-location";
    private static final String systemId    = "systemid";
    private static final String column      = "column";
    private static final String line        = "line";
    
    /** Sets the location information to a specified element. */
    public static void setLocationInfo( Element e, Locator loc ) {
        e.setAttributeNS(locationNamespace,"loc:"+systemId,loc.getSystemId());
        e.setAttributeNS(locationNamespace,"loc:"+column,Integer.toString(loc.getLineNumber()));
        e.setAttributeNS(locationNamespace,"loc:"+line,Integer.toString(loc.getColumnNumber()));
    }
    
    /**
     * Gets the location information from an element.
     * 
     * 

* For this method to work, the setLocationInfo method has to be * called before. */ public static Locator getLocationInfo( final Element e ) { if(DOMUtil.getAttribute(e,locationNamespace,systemId)==null) return null; // no location information return new Locator(){ public int getLineNumber() { return Integer.parseInt(DOMUtil.getAttribute(e,locationNamespace,line)); } public int getColumnNumber() { return Integer.parseInt(DOMUtil.getAttribute(e,locationNamespace,column)); } public String getSystemId() { return DOMUtil.getAttribute(e,locationNamespace,systemId); } // we are not interested in PUBLIC ID. public String getPublicId() { return null; } }; } }





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