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 * published by the Free Software Foundation.  Oracle designates this

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 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

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package com.sun.xml.internal.bind.v2.runtime;

import java.util.HashSet;

import java.util.Set;

import javax.xml.XMLConstants;

import org.w3c.dom.Attr;

import org.w3c.dom.NamedNodeMap;

import org.w3c.dom.Node;

/**

 * Post-init action for {@link MarshallerImpl} that incorporate the in-scope namespace bindings

 * from a DOM node.

 *

 * TODO: do we really need this? think about a better way to put this logic back into marshaller.

 *

 * @author Kohsuke Kawaguchi

 */

final class DomPostInitAction implements Runnable {

    private final Node node;

    private final XMLSerializer serializer;

    DomPostInitAction(Node node, XMLSerializer serializer) {

        this.node = node;

        this.serializer = serializer;

    }

    // declare the currently in-scope namespace bindings

    public void run() {

        Set<String> declaredPrefixes = new HashSet<String>();

        for( Node n=node; n!=null && n.getNodeType()==Node.ELEMENT_NODE; n=n.getParentNode() ) {

            NamedNodeMap atts = n.getAttributes();

            if(atts==null)      continue; // broken DOM. but be graceful.

            for( int i=0; i<atts.getLength(); i++ ) {

                Attr a = (Attr)atts.item(i);

                String nsUri = a.getNamespaceURI();

                if(nsUri==null || !nsUri.equals(XMLConstants.XMLNS_ATTRIBUTE_NS_URI))

                    continue;   // not a namespace declaration

                String prefix = a.getLocalName();

                if(prefix==null)

                    continue;   // broken DOM. skip to be safe

                if(prefix.equals("xmlns")) {

                    prefix = "";

                }

                String value = a.getValue();

                if(value==null)

                    continue;   // broken DOM. skip to be safe

                if(declaredPrefixes.add(prefix)) {

                    serializer.addInscopeBinding(value,prefix);

                }

            }

        }

    }

}