1 /*
   2  * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 package com.sun.xml.internal.bind.v2.runtime;
  27 
  28 import java.util.HashSet;
  29 import java.util.Set;
  30 
  31 import javax.xml.XMLConstants;
  32 
  33 import org.w3c.dom.Attr;
  34 import org.w3c.dom.NamedNodeMap;
  35 import org.w3c.dom.Node;
  36 
  37 /**
  38  * Post-init action for {@link MarshallerImpl} that incorporate the in-scope namespace bindings
  39  * from a DOM node.
  40  *
  41  * TODO: do we really need this? think about a better way to put this logic back into marshaller.
  42  *
  43  * @author Kohsuke Kawaguchi
  44  */
  45 final class DomPostInitAction implements Runnable {
  46 
  47     private final Node node;
  48     private final XMLSerializer serializer;
  49 
  50     DomPostInitAction(Node node, XMLSerializer serializer) {
  51         this.node = node;
  52         this.serializer = serializer;
  53     }
  54 
  55     // declare the currently in-scope namespace bindings
  56     public void run() {
  57         Set<String> declaredPrefixes = new HashSet<String>();
  58         for( Node n=node; n!=null && n.getNodeType()==Node.ELEMENT_NODE; n=n.getParentNode() ) {
  59             NamedNodeMap atts = n.getAttributes();
  60             if(atts==null)      continue; // broken DOM. but be graceful.
  61             for( int i=0; i<atts.getLength(); i++ ) {
  62                 Attr a = (Attr)atts.item(i);
  63                 String nsUri = a.getNamespaceURI();
  64                 if(nsUri==null || !nsUri.equals(XMLConstants.XMLNS_ATTRIBUTE_NS_URI))
  65                     continue;   // not a namespace declaration
  66                 String prefix = a.getLocalName();
  67                 if(prefix==null)
  68                     continue;   // broken DOM. skip to be safe
  69                 if(prefix.equals("xmlns")) {
  70                     prefix = "";
  71                 }
  72                 String value = a.getValue();
  73                 if(value==null)
  74                     continue;   // broken DOM. skip to be safe
  75                 if(declaredPrefixes.add(prefix)) {
  76                     serializer.addInscopeBinding(value,prefix);
  77                 }
  78             }
  79         }
  80     }
  81 }