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 javax.xml.namespace.NamespaceContext;
  29 import javax.xml.stream.XMLEventWriter;
  30 import javax.xml.stream.XMLStreamWriter;
  31 
  32 /**
  33  * Post-init action for {@link MarshallerImpl} that incorporate the in-scope namespace bindings
  34  * from a StAX writer.
  35  *
  36  * <p>
  37  * It's always used either with {@link XMLStreamWriter}, {@link XMLEventWriter}, or bare
  38  * {@link NamespaceContext},
  39  * but to reduce the # of classes in the runtime I wrote only one class that handles both.
  40  *
  41  * @author Kohsuke Kawaguchi
  42  */
  43 final class StAXPostInitAction implements Runnable {
  44     private final XMLStreamWriter xsw;
  45     private final XMLEventWriter xew;
  46     private final NamespaceContext nsc;
  47     private final XMLSerializer serializer;
  48 
  49     StAXPostInitAction(XMLStreamWriter xsw,XMLSerializer serializer) {
  50         this.xsw = xsw;
  51         this.xew = null;
  52         this.nsc = null;
  53         this.serializer = serializer;
  54     }
  55 
  56     StAXPostInitAction(XMLEventWriter xew,XMLSerializer serializer) {
  57         this.xsw = null;
  58         this.xew = xew;
  59         this.nsc = null;
  60         this.serializer = serializer;
  61     }
  62 
  63     StAXPostInitAction(NamespaceContext nsc,XMLSerializer serializer) {
  64         this.xsw = null;
  65         this.xew = null;
  66         this.nsc = nsc;
  67         this.serializer = serializer;
  68     }
  69 
  70     public void run() {
  71         NamespaceContext ns = nsc;
  72         if(xsw!=null)   ns = xsw.getNamespaceContext();
  73         if(xew!=null)   ns = xew.getNamespaceContext();
  74 
  75         // StAX javadoc isn't very clear on the behavior,
  76         // so work defensively in anticipation of broken implementations.
  77         if(ns==null)
  78             return;
  79 
  80         // we can't enumerate all the in-scope namespace bindings in StAX,
  81         // so we only look for the known static namespace URIs.
  82         // this is less than ideal, but better than nothing.
  83         for( String nsUri : serializer.grammar.nameList.namespaceURIs ) {
  84             String p = ns.getPrefix(nsUri);
  85             if(p!=null)
  86                 serializer.addInscopeBinding(nsUri,p);
  87         }
  88     }
  89 }